- //===- OpenMPClause.h - Classes for OpenMP clauses --------------*- C++ -*-===// 
- // 
- // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 
- // See https://llvm.org/LICENSE.txt for license information. 
- // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 
- // 
- //===----------------------------------------------------------------------===// 
- // 
- /// \file 
- /// This file defines OpenMP AST classes for clauses. 
- /// There are clauses for executable directives, clauses for declarative 
- /// directives and clauses which can be used in both kinds of directives. 
- // 
- //===----------------------------------------------------------------------===// 
-   
- #ifndef LLVM_CLANG_AST_OPENMPCLAUSE_H 
- #define LLVM_CLANG_AST_OPENMPCLAUSE_H 
-   
- #include "clang/AST/ASTFwd.h" 
- #include "clang/AST/Decl.h" 
- #include "clang/AST/DeclarationName.h" 
- #include "clang/AST/Expr.h" 
- #include "clang/AST/NestedNameSpecifier.h" 
- #include "clang/AST/Stmt.h" 
- #include "clang/AST/StmtIterator.h" 
- #include "clang/Basic/LLVM.h" 
- #include "clang/Basic/OpenMPKinds.h" 
- #include "clang/Basic/SourceLocation.h" 
- #include "llvm/ADT/ArrayRef.h" 
- #include "llvm/ADT/MapVector.h" 
- #include "llvm/ADT/PointerIntPair.h" 
- #include "llvm/ADT/SmallVector.h" 
- #include "llvm/ADT/iterator.h" 
- #include "llvm/ADT/iterator_range.h" 
- #include "llvm/Frontend/OpenMP/OMPAssume.h" 
- #include "llvm/Frontend/OpenMP/OMPConstants.h" 
- #include "llvm/Frontend/OpenMP/OMPContext.h" 
- #include "llvm/Support/Casting.h" 
- #include "llvm/Support/Compiler.h" 
- #include "llvm/Support/TrailingObjects.h" 
- #include <cassert> 
- #include <cstddef> 
- #include <iterator> 
- #include <utility> 
-   
- namespace clang { 
-   
- class ASTContext; 
-   
- //===----------------------------------------------------------------------===// 
- // AST classes for clauses. 
- //===----------------------------------------------------------------------===// 
-   
- /// This is a basic class for representing single OpenMP clause. 
- class OMPClause { 
-   /// Starting location of the clause (the clause keyword). 
-   SourceLocation StartLoc; 
-   
-   /// Ending location of the clause. 
-   SourceLocation EndLoc; 
-   
-   /// Kind of the clause. 
-   OpenMPClauseKind Kind; 
-   
- protected: 
-   OMPClause(OpenMPClauseKind K, SourceLocation StartLoc, SourceLocation EndLoc) 
-       : StartLoc(StartLoc), EndLoc(EndLoc), Kind(K) {} 
-   
- public: 
-   /// Returns the starting location of the clause. 
-   SourceLocation getBeginLoc() const { return StartLoc; } 
-   
-   /// Returns the ending location of the clause. 
-   SourceLocation getEndLoc() const { return EndLoc; } 
-   
-   /// Sets the starting location of the clause. 
-   void setLocStart(SourceLocation Loc) { StartLoc = Loc; } 
-   
-   /// Sets the ending location of the clause. 
-   void setLocEnd(SourceLocation Loc) { EndLoc = Loc; } 
-   
-   /// Returns kind of OpenMP clause (private, shared, reduction, etc.). 
-   OpenMPClauseKind getClauseKind() const { return Kind; } 
-   
-   bool isImplicit() const { return StartLoc.isInvalid(); } 
-   
-   using child_iterator = StmtIterator; 
-   using const_child_iterator = ConstStmtIterator; 
-   using child_range = llvm::iterator_range<child_iterator>; 
-   using const_child_range = llvm::iterator_range<const_child_iterator>; 
-   
-   child_range children(); 
-   const_child_range children() const { 
-     auto Children = const_cast<OMPClause *>(this)->children(); 
-     return const_child_range(Children.begin(), Children.end()); 
-   } 
-   
-   /// Get the iterator range for the expressions used in the clauses. Used 
-   /// expressions include only the children that must be evaluated at the 
-   /// runtime before entering the construct. 
-   child_range used_children(); 
-   const_child_range used_children() const { 
-     auto Children = const_cast<OMPClause *>(this)->children(); 
-     return const_child_range(Children.begin(), Children.end()); 
-   } 
-   
-   static bool classof(const OMPClause *) { return true; } 
- }; 
-   
- template <OpenMPClauseKind ClauseKind> 
- struct OMPNoChildClause : public OMPClause { 
-   /// Build '\p ClauseKind' clause. 
-   /// 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param EndLoc Ending location of the clause. 
-   OMPNoChildClause(SourceLocation StartLoc, SourceLocation EndLoc) 
-       : OMPClause(ClauseKind, StartLoc, EndLoc) {} 
-   
-   /// Build an empty clause. 
-   OMPNoChildClause() 
-       : OMPClause(ClauseKind, SourceLocation(), SourceLocation()) {} 
-   
-   child_range children() { 
-     return child_range(child_iterator(), child_iterator()); 
-   } 
-   
-   const_child_range children() const { 
-     return const_child_range(const_child_iterator(), const_child_iterator()); 
-   } 
-   
-   child_range used_children() { 
-     return child_range(child_iterator(), child_iterator()); 
-   } 
-   const_child_range used_children() const { 
-     return const_child_range(const_child_iterator(), const_child_iterator()); 
-   } 
-   
-   static bool classof(const OMPClause *T) { 
-     return T->getClauseKind() == ClauseKind; 
-   } 
- }; 
-   
- template <OpenMPClauseKind ClauseKind, class Base> 
- class OMPOneStmtClause : public Base { 
-   
-   /// Location of '('. 
-   SourceLocation LParenLoc; 
-   
-   /// Sub-expression. 
-   Stmt *S = nullptr; 
-   
- protected: 
-   void setStmt(Stmt *S) { this->S = S; } 
-   
- public: 
-   OMPOneStmtClause(Stmt *S, SourceLocation StartLoc, SourceLocation LParenLoc, 
-                    SourceLocation EndLoc) 
-       : Base(ClauseKind, StartLoc, EndLoc), LParenLoc(LParenLoc), S(S) {} 
-   
-   OMPOneStmtClause() : Base(ClauseKind, SourceLocation(), SourceLocation()) {} 
-   
-   /// Return the associated statement, potentially casted to \p T. 
-   template <typename T> T *getStmtAs() const { return cast_or_null<T>(S); } 
-   
-   /// Sets the location of '('. 
-   void setLParenLoc(SourceLocation Loc) { LParenLoc = Loc; } 
-   
-   /// Returns the location of '('. 
-   SourceLocation getLParenLoc() const { return LParenLoc; } 
-   
-   using child_iterator = StmtIterator; 
-   using const_child_iterator = ConstStmtIterator; 
-   using child_range = llvm::iterator_range<child_iterator>; 
-   using const_child_range = llvm::iterator_range<const_child_iterator>; 
-   
-   child_range children() { return child_range(&S, &S + 1); } 
-   
-   const_child_range children() const { return const_child_range(&S, &S + 1); } 
-   
-   // TODO: Consider making the getAddrOfExprAsWritten version the default. 
-   child_range used_children() { 
-     return child_range(child_iterator(), child_iterator()); 
-   } 
-   const_child_range used_children() const { 
-     return const_child_range(const_child_iterator(), const_child_iterator()); 
-   } 
-   
-   static bool classof(const OMPClause *T) { 
-     return T->getClauseKind() == ClauseKind; 
-   } 
- }; 
-   
- /// Class that handles pre-initialization statement for some clauses, like 
- /// 'shedule', 'firstprivate' etc. 
- class OMPClauseWithPreInit { 
-   friend class OMPClauseReader; 
-   
-   /// Pre-initialization statement for the clause. 
-   Stmt *PreInit = nullptr; 
-   
-   /// Region that captures the associated stmt. 
-   OpenMPDirectiveKind CaptureRegion = llvm::omp::OMPD_unknown; 
-   
- protected: 
-   OMPClauseWithPreInit(const OMPClause *This) { 
-     assert(get(This) && "get is not tuned for pre-init."); 
-   } 
-   
-   /// Set pre-initialization statement for the clause. 
-   void 
-   setPreInitStmt(Stmt *S, 
-                  OpenMPDirectiveKind ThisRegion = llvm::omp::OMPD_unknown) { 
-     PreInit = S; 
-     CaptureRegion = ThisRegion; 
-   } 
-   
- public: 
-   /// Get pre-initialization statement for the clause. 
-   const Stmt *getPreInitStmt() const { return PreInit; } 
-   
-   /// Get pre-initialization statement for the clause. 
-   Stmt *getPreInitStmt() { return PreInit; } 
-   
-   /// Get capture region for the stmt in the clause. 
-   OpenMPDirectiveKind getCaptureRegion() const { return CaptureRegion; } 
-   
-   static OMPClauseWithPreInit *get(OMPClause *C); 
-   static const OMPClauseWithPreInit *get(const OMPClause *C); 
- }; 
-   
- /// Class that handles post-update expression for some clauses, like 
- /// 'lastprivate', 'reduction' etc. 
- class OMPClauseWithPostUpdate : public OMPClauseWithPreInit { 
-   friend class OMPClauseReader; 
-   
-   /// Post-update expression for the clause. 
-   Expr *PostUpdate = nullptr; 
-   
- protected: 
-   OMPClauseWithPostUpdate(const OMPClause *This) : OMPClauseWithPreInit(This) { 
-     assert(get(This) && "get is not tuned for post-update."); 
-   } 
-   
-   /// Set pre-initialization statement for the clause. 
-   void setPostUpdateExpr(Expr *S) { PostUpdate = S; } 
-   
- public: 
-   /// Get post-update expression for the clause. 
-   const Expr *getPostUpdateExpr() const { return PostUpdate; } 
-   
-   /// Get post-update expression for the clause. 
-   Expr *getPostUpdateExpr() { return PostUpdate; } 
-   
-   static OMPClauseWithPostUpdate *get(OMPClause *C); 
-   static const OMPClauseWithPostUpdate *get(const OMPClause *C); 
- }; 
-   
- /// This structure contains most locations needed for by an OMPVarListClause. 
- struct OMPVarListLocTy { 
-   /// Starting location of the clause (the clause keyword). 
-   SourceLocation StartLoc; 
-   /// Location of '('. 
-   SourceLocation LParenLoc; 
-   /// Ending location of the clause. 
-   SourceLocation EndLoc; 
-   OMPVarListLocTy() = default; 
-   OMPVarListLocTy(SourceLocation StartLoc, SourceLocation LParenLoc, 
-                   SourceLocation EndLoc) 
-       : StartLoc(StartLoc), LParenLoc(LParenLoc), EndLoc(EndLoc) {} 
- }; 
-   
- /// This represents clauses with the list of variables like 'private', 
- /// 'firstprivate', 'copyin', 'shared', or 'reduction' clauses in the 
- /// '#pragma omp ...' directives. 
- template <class T> class OMPVarListClause : public OMPClause { 
-   friend class OMPClauseReader; 
-   
-   /// Location of '('. 
-   SourceLocation LParenLoc; 
-   
-   /// Number of variables in the list. 
-   unsigned NumVars; 
-   
- protected: 
-   /// Build a clause with \a N variables 
-   /// 
-   /// \param K Kind of the clause. 
-   /// \param StartLoc Starting location of the clause (the clause keyword). 
-   /// \param LParenLoc Location of '('. 
-   /// \param EndLoc Ending location of the clause. 
-   /// \param N Number of the variables in the clause. 
-   OMPVarListClause(OpenMPClauseKind K, SourceLocation StartLoc, 
-                    SourceLocation LParenLoc, SourceLocation EndLoc, unsigned N) 
-       : OMPClause(K, StartLoc, EndLoc), LParenLoc(LParenLoc), NumVars(N) {} 
-   
-   /// Fetches list of variables associated with this clause. 
-   MutableArrayRef<Expr *> getVarRefs() { 
-     return MutableArrayRef<Expr *>( 
-         static_cast<T *>(this)->template getTrailingObjects<Expr *>(), NumVars); 
-   } 
-   
-   /// Sets the list of variables for this clause. 
-   void setVarRefs(ArrayRef<Expr *> VL) { 
-     assert(VL.size() == NumVars && 
-            "Number of variables is not the same as the preallocated buffer"); 
-     std::copy(VL.begin(), VL.end(), 
-               static_cast<T *>(this)->template getTrailingObjects<Expr *>()); 
-   } 
-   
- public: 
-   using varlist_iterator = MutableArrayRef<Expr *>::iterator; 
-   using varlist_const_iterator = ArrayRef<const Expr *>::iterator; 
-   using varlist_range = llvm::iterator_range<varlist_iterator>; 
-   using varlist_const_range = llvm::iterator_range<varlist_const_iterator>; 
-   
-   unsigned varlist_size() const { return NumVars; } 
-   bool varlist_empty() const { return NumVars == 0; } 
-   
-   varlist_range varlists() { 
-     return varlist_range(varlist_begin(), varlist_end()); 
-   } 
-   varlist_const_range varlists() const { 
-     return varlist_const_range(varlist_begin(), varlist_end()); 
-   } 
-   
-   varlist_iterator varlist_begin() { return getVarRefs().begin(); } 
-   varlist_iterator varlist_end() { return getVarRefs().end(); } 
-   varlist_const_iterator varlist_begin() const { return getVarRefs().begin(); } 
-   varlist_const_iterator varlist_end() const { return getVarRefs().end(); } 
-   
-   /// Sets the location of '('. 
-   void setLParenLoc(SourceLocation Loc) { LParenLoc = Loc; } 
-   
-   /// Returns the location of '('. 
-   SourceLocation getLParenLoc() const { return LParenLoc; } 
-   
-   /// Fetches list of all variables in the clause. 
-   ArrayRef<const Expr *> getVarRefs() const { 
-     return llvm::ArrayRef( 
-         static_cast<const T *>(this)->template getTrailingObjects<Expr *>(), 
-         NumVars); 
-   } 
- }; 
-   
- /// This represents 'allocator' clause in the '#pragma omp ...' 
- /// directive. 
- /// 
- /// \code 
- /// #pragma omp allocate(a) allocator(omp_default_mem_alloc) 
- /// \endcode 
- /// In this example directive '#pragma omp allocate' has simple 'allocator' 
- /// clause with the allocator 'omp_default_mem_alloc'. 
- class OMPAllocatorClause final 
-     : public OMPOneStmtClause<llvm::omp::OMPC_allocator, OMPClause> { 
-   friend class OMPClauseReader; 
-   
-   /// Set allocator. 
-   void setAllocator(Expr *A) { setStmt(A); } 
-   
- public: 
-   /// Build 'allocator' clause with the given allocator. 
-   /// 
-   /// \param A Allocator. 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param LParenLoc Location of '('. 
-   /// \param EndLoc Ending location of the clause. 
-   OMPAllocatorClause(Expr *A, SourceLocation StartLoc, SourceLocation LParenLoc, 
-                      SourceLocation EndLoc) 
-       : OMPOneStmtClause(A, StartLoc, LParenLoc, EndLoc) {} 
-   
-   /// Build an empty clause. 
-   OMPAllocatorClause() : OMPOneStmtClause() {} 
-   
-   /// Returns allocator. 
-   Expr *getAllocator() const { return getStmtAs<Expr>(); } 
- }; 
-   
- /// This represents the 'align' clause in the '#pragma omp allocate' 
- /// directive. 
- /// 
- /// \code 
- /// #pragma omp allocate(a) allocator(omp_default_mem_alloc) align(8) 
- /// \endcode 
- /// In this example directive '#pragma omp allocate' has simple 'allocator' 
- /// clause with the allocator 'omp_default_mem_alloc' and align clause with 
- /// value of 8. 
- class OMPAlignClause final 
-     : public OMPOneStmtClause<llvm::omp::OMPC_align, OMPClause> { 
-   friend class OMPClauseReader; 
-   
-   /// Set alignment value. 
-   void setAlignment(Expr *A) { setStmt(A); } 
-   
-   /// Build 'align' clause with the given alignment 
-   /// 
-   /// \param A Alignment value. 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param LParenLoc Location of '('. 
-   /// \param EndLoc Ending location of the clause. 
-   OMPAlignClause(Expr *A, SourceLocation StartLoc, SourceLocation LParenLoc, 
-                  SourceLocation EndLoc) 
-       : OMPOneStmtClause(A, StartLoc, LParenLoc, EndLoc) {} 
-   
-   /// Build an empty clause. 
-   OMPAlignClause() : OMPOneStmtClause() {} 
-   
- public: 
-   /// Build 'align' clause with the given alignment 
-   /// 
-   /// \param A Alignment value. 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param LParenLoc Location of '('. 
-   /// \param EndLoc Ending location of the clause. 
-   static OMPAlignClause *Create(const ASTContext &C, Expr *A, 
-                                 SourceLocation StartLoc, 
-                                 SourceLocation LParenLoc, 
-                                 SourceLocation EndLoc); 
-   
-   /// Returns alignment 
-   Expr *getAlignment() const { return getStmtAs<Expr>(); } 
- }; 
-   
- /// This represents clause 'allocate' in the '#pragma omp ...' directives. 
- /// 
- /// \code 
- /// #pragma omp parallel private(a) allocate(omp_default_mem_alloc :a) 
- /// \endcode 
- /// In this example directive '#pragma omp parallel' has clause 'private' 
- /// and clause 'allocate' for the variable 'a'. 
- class OMPAllocateClause final 
-     : public OMPVarListClause<OMPAllocateClause>, 
-       private llvm::TrailingObjects<OMPAllocateClause, Expr *> { 
-   friend class OMPClauseReader; 
-   friend OMPVarListClause; 
-   friend TrailingObjects; 
-   
-   /// Allocator specified in the clause, or 'nullptr' if the default one is 
-   /// used. 
-   Expr *Allocator = nullptr; 
-   /// Position of the ':' delimiter in the clause; 
-   SourceLocation ColonLoc; 
-   
-   /// Build clause with number of variables \a N. 
-   /// 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param LParenLoc Location of '('. 
-   /// \param Allocator Allocator expression. 
-   /// \param ColonLoc Location of ':' delimiter. 
-   /// \param EndLoc Ending location of the clause. 
-   /// \param N Number of the variables in the clause. 
-   OMPAllocateClause(SourceLocation StartLoc, SourceLocation LParenLoc, 
-                     Expr *Allocator, SourceLocation ColonLoc, 
-                     SourceLocation EndLoc, unsigned N) 
-       : OMPVarListClause<OMPAllocateClause>(llvm::omp::OMPC_allocate, StartLoc, 
-                                             LParenLoc, EndLoc, N), 
-         Allocator(Allocator), ColonLoc(ColonLoc) {} 
-   
-   /// Build an empty clause. 
-   /// 
-   /// \param N Number of variables. 
-   explicit OMPAllocateClause(unsigned N) 
-       : OMPVarListClause<OMPAllocateClause>(llvm::omp::OMPC_allocate, 
-                                             SourceLocation(), SourceLocation(), 
-                                             SourceLocation(), N) {} 
-   
-   /// Sets location of ':' symbol in clause. 
-   void setColonLoc(SourceLocation CL) { ColonLoc = CL; } 
-   
-   void setAllocator(Expr *A) { Allocator = A; } 
-   
- public: 
-   /// Creates clause with a list of variables \a VL. 
-   /// 
-   /// \param C AST context. 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param LParenLoc Location of '('. 
-   /// \param Allocator Allocator expression. 
-   /// \param ColonLoc Location of ':' delimiter. 
-   /// \param EndLoc Ending location of the clause. 
-   /// \param VL List of references to the variables. 
-   static OMPAllocateClause *Create(const ASTContext &C, SourceLocation StartLoc, 
-                                    SourceLocation LParenLoc, Expr *Allocator, 
-                                    SourceLocation ColonLoc, 
-                                    SourceLocation EndLoc, ArrayRef<Expr *> VL); 
-   
-   /// Returns the allocator expression or nullptr, if no allocator is specified. 
-   Expr *getAllocator() const { return Allocator; } 
-   
-   /// Returns the location of the ':' delimiter. 
-   SourceLocation getColonLoc() const { return ColonLoc; } 
-   
-   /// Creates an empty clause with the place for \a N variables. 
-   /// 
-   /// \param C AST context. 
-   /// \param N The number of variables. 
-   static OMPAllocateClause *CreateEmpty(const ASTContext &C, unsigned N); 
-   
-   child_range children() { 
-     return child_range(reinterpret_cast<Stmt **>(varlist_begin()), 
-                        reinterpret_cast<Stmt **>(varlist_end())); 
-   } 
-   
-   const_child_range children() const { 
-     auto Children = const_cast<OMPAllocateClause *>(this)->children(); 
-     return const_child_range(Children.begin(), Children.end()); 
-   } 
-   
-   child_range used_children() { 
-     return child_range(child_iterator(), child_iterator()); 
-   } 
-   const_child_range used_children() const { 
-     return const_child_range(const_child_iterator(), const_child_iterator()); 
-   } 
-   
-   static bool classof(const OMPClause *T) { 
-     return T->getClauseKind() == llvm::omp::OMPC_allocate; 
-   } 
- }; 
-   
- /// This represents 'if' clause in the '#pragma omp ...' directive. 
- /// 
- /// \code 
- /// #pragma omp parallel if(parallel:a > 5) 
- /// \endcode 
- /// In this example directive '#pragma omp parallel' has simple 'if' clause with 
- /// condition 'a > 5' and directive name modifier 'parallel'. 
- class OMPIfClause : public OMPClause, public OMPClauseWithPreInit { 
-   friend class OMPClauseReader; 
-   
-   /// Location of '('. 
-   SourceLocation LParenLoc; 
-   
-   /// Condition of the 'if' clause. 
-   Stmt *Condition = nullptr; 
-   
-   /// Location of ':' (if any). 
-   SourceLocation ColonLoc; 
-   
-   /// Directive name modifier for the clause. 
-   OpenMPDirectiveKind NameModifier = llvm::omp::OMPD_unknown; 
-   
-   /// Name modifier location. 
-   SourceLocation NameModifierLoc; 
-   
-   /// Set condition. 
-   void setCondition(Expr *Cond) { Condition = Cond; } 
-   
-   /// Set directive name modifier for the clause. 
-   void setNameModifier(OpenMPDirectiveKind NM) { NameModifier = NM; } 
-   
-   /// Set location of directive name modifier for the clause. 
-   void setNameModifierLoc(SourceLocation Loc) { NameModifierLoc = Loc; } 
-   
-   /// Set location of ':'. 
-   void setColonLoc(SourceLocation Loc) { ColonLoc = Loc; } 
-   
- public: 
-   /// Build 'if' clause with condition \a Cond. 
-   /// 
-   /// \param NameModifier [OpenMP 4.1] Directive name modifier of clause. 
-   /// \param Cond Condition of the clause. 
-   /// \param HelperCond Helper condition for the clause. 
-   /// \param CaptureRegion Innermost OpenMP region where expressions in this 
-   /// clause must be captured. 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param LParenLoc Location of '('. 
-   /// \param NameModifierLoc Location of directive name modifier. 
-   /// \param ColonLoc [OpenMP 4.1] Location of ':'. 
-   /// \param EndLoc Ending location of the clause. 
-   OMPIfClause(OpenMPDirectiveKind NameModifier, Expr *Cond, Stmt *HelperCond, 
-               OpenMPDirectiveKind CaptureRegion, SourceLocation StartLoc, 
-               SourceLocation LParenLoc, SourceLocation NameModifierLoc, 
-               SourceLocation ColonLoc, SourceLocation EndLoc) 
-       : OMPClause(llvm::omp::OMPC_if, StartLoc, EndLoc), 
-         OMPClauseWithPreInit(this), LParenLoc(LParenLoc), Condition(Cond), 
-         ColonLoc(ColonLoc), NameModifier(NameModifier), 
-         NameModifierLoc(NameModifierLoc) { 
-     setPreInitStmt(HelperCond, CaptureRegion); 
-   } 
-   
-   /// Build an empty clause. 
-   OMPIfClause() 
-       : OMPClause(llvm::omp::OMPC_if, SourceLocation(), SourceLocation()), 
-         OMPClauseWithPreInit(this) {} 
-   
-   /// Sets the location of '('. 
-   void setLParenLoc(SourceLocation Loc) { LParenLoc = Loc; } 
-   
-   /// Returns the location of '('. 
-   SourceLocation getLParenLoc() const { return LParenLoc; } 
-   
-   /// Return the location of ':'. 
-   SourceLocation getColonLoc() const { return ColonLoc; } 
-   
-   /// Returns condition. 
-   Expr *getCondition() const { return cast_or_null<Expr>(Condition); } 
-   
-   /// Return directive name modifier associated with the clause. 
-   OpenMPDirectiveKind getNameModifier() const { return NameModifier; } 
-   
-   /// Return the location of directive name modifier. 
-   SourceLocation getNameModifierLoc() const { return NameModifierLoc; } 
-   
-   child_range children() { return child_range(&Condition, &Condition + 1); } 
-   
-   const_child_range children() const { 
-     return const_child_range(&Condition, &Condition + 1); 
-   } 
-   
-   child_range used_children(); 
-   const_child_range used_children() const { 
-     auto Children = const_cast<OMPIfClause *>(this)->used_children(); 
-     return const_child_range(Children.begin(), Children.end()); 
-   } 
-   
-   static bool classof(const OMPClause *T) { 
-     return T->getClauseKind() == llvm::omp::OMPC_if; 
-   } 
- }; 
-   
- /// This represents 'final' clause in the '#pragma omp ...' directive. 
- /// 
- /// \code 
- /// #pragma omp task final(a > 5) 
- /// \endcode 
- /// In this example directive '#pragma omp task' has simple 'final' 
- /// clause with condition 'a > 5'. 
- class OMPFinalClause final 
-     : public OMPOneStmtClause<llvm::omp::OMPC_final, OMPClause>, 
-       public OMPClauseWithPreInit { 
-   friend class OMPClauseReader; 
-   
-   /// Set condition. 
-   void setCondition(Expr *Cond) { setStmt(Cond); } 
-   
- public: 
-   /// Build 'final' clause with condition \a Cond. 
-   /// 
-   /// \param Cond Condition of the clause. 
-   /// \param HelperCond Helper condition for the construct. 
-   /// \param CaptureRegion Innermost OpenMP region where expressions in this 
-   /// clause must be captured. 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param LParenLoc Location of '('. 
-   /// \param EndLoc Ending location of the clause. 
-   OMPFinalClause(Expr *Cond, Stmt *HelperCond, 
-                  OpenMPDirectiveKind CaptureRegion, SourceLocation StartLoc, 
-                  SourceLocation LParenLoc, SourceLocation EndLoc) 
-       : OMPOneStmtClause(Cond, StartLoc, LParenLoc, EndLoc), 
-         OMPClauseWithPreInit(this) { 
-     setPreInitStmt(HelperCond, CaptureRegion); 
-   } 
-   
-   /// Build an empty clause. 
-   OMPFinalClause() : OMPOneStmtClause(), OMPClauseWithPreInit(this) {} 
-   
-   /// Returns condition. 
-   Expr *getCondition() const { return getStmtAs<Expr>(); } 
-   
-   child_range used_children(); 
-   const_child_range used_children() const { 
-     auto Children = const_cast<OMPFinalClause *>(this)->used_children(); 
-     return const_child_range(Children.begin(), Children.end()); 
-   } 
- }; 
- /// This represents 'num_threads' clause in the '#pragma omp ...' 
- /// directive. 
- /// 
- /// \code 
- /// #pragma omp parallel num_threads(6) 
- /// \endcode 
- /// In this example directive '#pragma omp parallel' has simple 'num_threads' 
- /// clause with number of threads '6'. 
- class OMPNumThreadsClause final 
-     : public OMPOneStmtClause<llvm::omp::OMPC_num_threads, OMPClause>, 
-       public OMPClauseWithPreInit { 
-   friend class OMPClauseReader; 
-   
-   /// Set condition. 
-   void setNumThreads(Expr *NThreads) { setStmt(NThreads); } 
-   
- public: 
-   /// Build 'num_threads' clause with condition \a NumThreads. 
-   /// 
-   /// \param NumThreads Number of threads for the construct. 
-   /// \param HelperNumThreads Helper Number of threads for the construct. 
-   /// \param CaptureRegion Innermost OpenMP region where expressions in this 
-   /// clause must be captured. 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param LParenLoc Location of '('. 
-   /// \param EndLoc Ending location of the clause. 
-   OMPNumThreadsClause(Expr *NumThreads, Stmt *HelperNumThreads, 
-                       OpenMPDirectiveKind CaptureRegion, 
-                       SourceLocation StartLoc, SourceLocation LParenLoc, 
-                       SourceLocation EndLoc) 
-       : OMPOneStmtClause(NumThreads, StartLoc, LParenLoc, EndLoc), 
-         OMPClauseWithPreInit(this) { 
-     setPreInitStmt(HelperNumThreads, CaptureRegion); 
-   } 
-   
-   /// Build an empty clause. 
-   OMPNumThreadsClause() : OMPOneStmtClause(), OMPClauseWithPreInit(this) {} 
-   
-   /// Returns number of threads. 
-   Expr *getNumThreads() const { return getStmtAs<Expr>(); } 
- }; 
-   
- /// This represents 'safelen' clause in the '#pragma omp ...' 
- /// directive. 
- /// 
- /// \code 
- /// #pragma omp simd safelen(4) 
- /// \endcode 
- /// In this example directive '#pragma omp simd' has clause 'safelen' 
- /// with single expression '4'. 
- /// If the safelen clause is used then no two iterations executed 
- /// concurrently with SIMD instructions can have a greater distance 
- /// in the logical iteration space than its value. The parameter of 
- /// the safelen clause must be a constant positive integer expression. 
- class OMPSafelenClause final 
-     : public OMPOneStmtClause<llvm::omp::OMPC_safelen, OMPClause> { 
-   friend class OMPClauseReader; 
-   
-   /// Set safelen. 
-   void setSafelen(Expr *Len) { setStmt(Len); } 
-   
- public: 
-   /// Build 'safelen' clause. 
-   /// 
-   /// \param Len Expression associated with this clause. 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param EndLoc Ending location of the clause. 
-   OMPSafelenClause(Expr *Len, SourceLocation StartLoc, SourceLocation LParenLoc, 
-                    SourceLocation EndLoc) 
-       : OMPOneStmtClause(Len, StartLoc, LParenLoc, EndLoc) {} 
-   
-   /// Build an empty clause. 
-   explicit OMPSafelenClause() : OMPOneStmtClause() {} 
-   
-   /// Return safe iteration space distance. 
-   Expr *getSafelen() const { return getStmtAs<Expr>(); } 
- }; 
-   
- /// This represents 'simdlen' clause in the '#pragma omp ...' 
- /// directive. 
- /// 
- /// \code 
- /// #pragma omp simd simdlen(4) 
- /// \endcode 
- /// In this example directive '#pragma omp simd' has clause 'simdlen' 
- /// with single expression '4'. 
- /// If the 'simdlen' clause is used then it specifies the preferred number of 
- /// iterations to be executed concurrently. The parameter of the 'simdlen' 
- /// clause must be a constant positive integer expression. 
- class OMPSimdlenClause final 
-     : public OMPOneStmtClause<llvm::omp::OMPC_simdlen, OMPClause> { 
-   friend class OMPClauseReader; 
-   
-   /// Set simdlen. 
-   void setSimdlen(Expr *Len) { setStmt(Len); } 
-   
- public: 
-   /// Build 'simdlen' clause. 
-   /// 
-   /// \param Len Expression associated with this clause. 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param EndLoc Ending location of the clause. 
-   OMPSimdlenClause(Expr *Len, SourceLocation StartLoc, SourceLocation LParenLoc, 
-                    SourceLocation EndLoc) 
-       : OMPOneStmtClause(Len, StartLoc, LParenLoc, EndLoc) {} 
-   
-   /// Build an empty clause. 
-   explicit OMPSimdlenClause() : OMPOneStmtClause() {} 
-   
-   /// Return safe iteration space distance. 
-   Expr *getSimdlen() const { return getStmtAs<Expr>(); } 
- }; 
-   
- /// This represents the 'sizes' clause in the '#pragma omp tile' directive. 
- /// 
- /// \code 
- /// #pragma omp tile sizes(5,5) 
- /// for (int i = 0; i < 64; ++i) 
- ///   for (int j = 0; j < 64; ++j) 
- /// \endcode 
- class OMPSizesClause final 
-     : public OMPClause, 
-       private llvm::TrailingObjects<OMPSizesClause, Expr *> { 
-   friend class OMPClauseReader; 
-   friend class llvm::TrailingObjects<OMPSizesClause, Expr *>; 
-   
-   /// Location of '('. 
-   SourceLocation LParenLoc; 
-   
-   /// Number of tile sizes in the clause. 
-   unsigned NumSizes; 
-   
-   /// Build an empty clause. 
-   explicit OMPSizesClause(int NumSizes) 
-       : OMPClause(llvm::omp::OMPC_sizes, SourceLocation(), SourceLocation()), 
-         NumSizes(NumSizes) {} 
-   
- public: 
-   /// Build a 'sizes' AST node. 
-   /// 
-   /// \param C         Context of the AST. 
-   /// \param StartLoc  Location of the 'sizes' identifier. 
-   /// \param LParenLoc Location of '('. 
-   /// \param EndLoc    Location of ')'. 
-   /// \param Sizes     Content of the clause. 
-   static OMPSizesClause *Create(const ASTContext &C, SourceLocation StartLoc, 
-                                 SourceLocation LParenLoc, SourceLocation EndLoc, 
-                                 ArrayRef<Expr *> Sizes); 
-   
-   /// Build an empty 'sizes' AST node for deserialization. 
-   /// 
-   /// \param C     Context of the AST. 
-   /// \param NumSizes Number of items in the clause. 
-   static OMPSizesClause *CreateEmpty(const ASTContext &C, unsigned NumSizes); 
-   
-   /// Sets the location of '('. 
-   void setLParenLoc(SourceLocation Loc) { LParenLoc = Loc; } 
-   
-   /// Returns the location of '('. 
-   SourceLocation getLParenLoc() const { return LParenLoc; } 
-   
-   /// Returns the number of list items. 
-   unsigned getNumSizes() const { return NumSizes; } 
-   
-   /// Returns the tile size expressions. 
-   MutableArrayRef<Expr *> getSizesRefs() { 
-     return MutableArrayRef<Expr *>(static_cast<OMPSizesClause *>(this) 
-                                        ->template getTrailingObjects<Expr *>(), 
-                                    NumSizes); 
-   } 
-   ArrayRef<Expr *> getSizesRefs() const { 
-     return ArrayRef<Expr *>(static_cast<const OMPSizesClause *>(this) 
-                                 ->template getTrailingObjects<Expr *>(), 
-                             NumSizes); 
-   } 
-   
-   /// Sets the tile size expressions. 
-   void setSizesRefs(ArrayRef<Expr *> VL) { 
-     assert(VL.size() == NumSizes); 
-     std::copy(VL.begin(), VL.end(), 
-               static_cast<OMPSizesClause *>(this) 
-                   ->template getTrailingObjects<Expr *>()); 
-   } 
-   
-   child_range children() { 
-     MutableArrayRef<Expr *> Sizes = getSizesRefs(); 
-     return child_range(reinterpret_cast<Stmt **>(Sizes.begin()), 
-                        reinterpret_cast<Stmt **>(Sizes.end())); 
-   } 
-   const_child_range children() const { 
-     ArrayRef<Expr *> Sizes = getSizesRefs(); 
-     return const_child_range(reinterpret_cast<Stmt *const *>(Sizes.begin()), 
-                              reinterpret_cast<Stmt *const *>(Sizes.end())); 
-   } 
-   
-   child_range used_children() { 
-     return child_range(child_iterator(), child_iterator()); 
-   } 
-   const_child_range used_children() const { 
-     return const_child_range(const_child_iterator(), const_child_iterator()); 
-   } 
-   
-   static bool classof(const OMPClause *T) { 
-     return T->getClauseKind() == llvm::omp::OMPC_sizes; 
-   } 
- }; 
-   
- /// Representation of the 'full' clause of the '#pragma omp unroll' directive. 
- /// 
- /// \code 
- /// #pragma omp unroll full 
- /// for (int i = 0; i < 64; ++i) 
- /// \endcode 
- class OMPFullClause final : public OMPNoChildClause<llvm::omp::OMPC_full> { 
-   friend class OMPClauseReader; 
-   
-   /// Build an empty clause. 
-   explicit OMPFullClause() : OMPNoChildClause() {} 
-   
- public: 
-   /// Build an AST node for a 'full' clause. 
-   /// 
-   /// \param C        Context of the AST. 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param EndLoc   Ending location of the clause. 
-   static OMPFullClause *Create(const ASTContext &C, SourceLocation StartLoc, 
-                                SourceLocation EndLoc); 
-   
-   /// Build an empty 'full' AST node for deserialization. 
-   /// 
-   /// \param C Context of the AST. 
-   static OMPFullClause *CreateEmpty(const ASTContext &C); 
- }; 
-   
- /// Representation of the 'partial' clause of the '#pragma omp unroll' 
- /// directive. 
- /// 
- /// \code 
- /// #pragma omp unroll partial(4) 
- /// for (int i = start; i < end; ++i) 
- /// \endcode 
- class OMPPartialClause final : public OMPClause { 
-   friend class OMPClauseReader; 
-   
-   /// Location of '('. 
-   SourceLocation LParenLoc; 
-   
-   /// Optional argument to the clause (unroll factor). 
-   Stmt *Factor; 
-   
-   /// Build an empty clause. 
-   explicit OMPPartialClause() : OMPClause(llvm::omp::OMPC_partial, {}, {}) {} 
-   
-   /// Set the unroll factor. 
-   void setFactor(Expr *E) { Factor = E; } 
-   
-   /// Sets the location of '('. 
-   void setLParenLoc(SourceLocation Loc) { LParenLoc = Loc; } 
-   
- public: 
-   /// Build an AST node for a 'partial' clause. 
-   /// 
-   /// \param C         Context of the AST. 
-   /// \param StartLoc  Location of the 'partial' identifier. 
-   /// \param LParenLoc Location of '('. 
-   /// \param EndLoc    Location of ')'. 
-   /// \param Factor    Clause argument. 
-   static OMPPartialClause *Create(const ASTContext &C, SourceLocation StartLoc, 
-                                   SourceLocation LParenLoc, 
-                                   SourceLocation EndLoc, Expr *Factor); 
-   
-   /// Build an empty 'partial' AST node for deserialization. 
-   /// 
-   /// \param C     Context of the AST. 
-   static OMPPartialClause *CreateEmpty(const ASTContext &C); 
-   
-   /// Returns the location of '('. 
-   SourceLocation getLParenLoc() const { return LParenLoc; } 
-   
-   /// Returns the argument of the clause or nullptr if not set. 
-   Expr *getFactor() const { return cast_or_null<Expr>(Factor); } 
-   
-   child_range children() { return child_range(&Factor, &Factor + 1); } 
-   const_child_range children() const { 
-     return const_child_range(&Factor, &Factor + 1); 
-   } 
-   
-   child_range used_children() { 
-     return child_range(child_iterator(), child_iterator()); 
-   } 
-   const_child_range used_children() const { 
-     return const_child_range(const_child_iterator(), const_child_iterator()); 
-   } 
-   
-   static bool classof(const OMPClause *T) { 
-     return T->getClauseKind() == llvm::omp::OMPC_partial; 
-   } 
- }; 
-   
- /// This represents 'collapse' clause in the '#pragma omp ...' 
- /// directive. 
- /// 
- /// \code 
- /// #pragma omp simd collapse(3) 
- /// \endcode 
- /// In this example directive '#pragma omp simd' has clause 'collapse' 
- /// with single expression '3'. 
- /// The parameter must be a constant positive integer expression, it specifies 
- /// the number of nested loops that should be collapsed into a single iteration 
- /// space. 
- class OMPCollapseClause final 
-     : public OMPOneStmtClause<llvm::omp::OMPC_collapse, OMPClause> { 
-   friend class OMPClauseReader; 
-   
-   /// Set the number of associated for-loops. 
-   void setNumForLoops(Expr *Num) { setStmt(Num); } 
-   
- public: 
-   /// Build 'collapse' clause. 
-   /// 
-   /// \param Num Expression associated with this clause. 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param LParenLoc Location of '('. 
-   /// \param EndLoc Ending location of the clause. 
-   OMPCollapseClause(Expr *Num, SourceLocation StartLoc, 
-                     SourceLocation LParenLoc, SourceLocation EndLoc) 
-       : OMPOneStmtClause(Num, StartLoc, LParenLoc, EndLoc) {} 
-   
-   /// Build an empty clause. 
-   explicit OMPCollapseClause() : OMPOneStmtClause() {} 
-   
-   /// Return the number of associated for-loops. 
-   Expr *getNumForLoops() const { return getStmtAs<Expr>(); } 
- }; 
-   
- /// This represents 'default' clause in the '#pragma omp ...' directive. 
- /// 
- /// \code 
- /// #pragma omp parallel default(shared) 
- /// \endcode 
- /// In this example directive '#pragma omp parallel' has simple 'default' 
- /// clause with kind 'shared'. 
- class OMPDefaultClause : public OMPClause { 
-   friend class OMPClauseReader; 
-   
-   /// Location of '('. 
-   SourceLocation LParenLoc; 
-   
-   /// A kind of the 'default' clause. 
-   llvm::omp::DefaultKind Kind = llvm::omp::OMP_DEFAULT_unknown; 
-   
-   /// Start location of the kind in source code. 
-   SourceLocation KindKwLoc; 
-   
-   /// Set kind of the clauses. 
-   /// 
-   /// \param K Argument of clause. 
-   void setDefaultKind(llvm::omp::DefaultKind K) { Kind = K; } 
-   
-   /// Set argument location. 
-   /// 
-   /// \param KLoc Argument location. 
-   void setDefaultKindKwLoc(SourceLocation KLoc) { KindKwLoc = KLoc; } 
-   
- public: 
-   /// Build 'default' clause with argument \a A ('none' or 'shared'). 
-   /// 
-   /// \param A Argument of the clause ('none' or 'shared'). 
-   /// \param ALoc Starting location of the argument. 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param LParenLoc Location of '('. 
-   /// \param EndLoc Ending location of the clause. 
-   OMPDefaultClause(llvm::omp::DefaultKind A, SourceLocation ALoc, 
-                    SourceLocation StartLoc, SourceLocation LParenLoc, 
-                    SourceLocation EndLoc) 
-       : OMPClause(llvm::omp::OMPC_default, StartLoc, EndLoc), 
-         LParenLoc(LParenLoc), Kind(A), KindKwLoc(ALoc) {} 
-   
-   /// Build an empty clause. 
-   OMPDefaultClause() 
-       : OMPClause(llvm::omp::OMPC_default, SourceLocation(), SourceLocation()) { 
-   } 
-   
-   /// Sets the location of '('. 
-   void setLParenLoc(SourceLocation Loc) { LParenLoc = Loc; } 
-   
-   /// Returns the location of '('. 
-   SourceLocation getLParenLoc() const { return LParenLoc; } 
-   
-   /// Returns kind of the clause. 
-   llvm::omp::DefaultKind getDefaultKind() const { return Kind; } 
-   
-   /// Returns location of clause kind. 
-   SourceLocation getDefaultKindKwLoc() const { return KindKwLoc; } 
-   
-   child_range children() { 
-     return child_range(child_iterator(), child_iterator()); 
-   } 
-   
-   const_child_range children() const { 
-     return const_child_range(const_child_iterator(), const_child_iterator()); 
-   } 
-   
-   child_range used_children() { 
-     return child_range(child_iterator(), child_iterator()); 
-   } 
-   const_child_range used_children() const { 
-     return const_child_range(const_child_iterator(), const_child_iterator()); 
-   } 
-   
-   static bool classof(const OMPClause *T) { 
-     return T->getClauseKind() == llvm::omp::OMPC_default; 
-   } 
- }; 
-   
- /// This represents 'proc_bind' clause in the '#pragma omp ...' 
- /// directive. 
- /// 
- /// \code 
- /// #pragma omp parallel proc_bind(master) 
- /// \endcode 
- /// In this example directive '#pragma omp parallel' has simple 'proc_bind' 
- /// clause with kind 'master'. 
- class OMPProcBindClause : public OMPClause { 
-   friend class OMPClauseReader; 
-   
-   /// Location of '('. 
-   SourceLocation LParenLoc; 
-   
-   /// A kind of the 'proc_bind' clause. 
-   llvm::omp::ProcBindKind Kind = llvm::omp::OMP_PROC_BIND_unknown; 
-   
-   /// Start location of the kind in source code. 
-   SourceLocation KindKwLoc; 
-   
-   /// Set kind of the clause. 
-   /// 
-   /// \param K Kind of clause. 
-   void setProcBindKind(llvm::omp::ProcBindKind K) { Kind = K; } 
-   
-   /// Set clause kind location. 
-   /// 
-   /// \param KLoc Kind location. 
-   void setProcBindKindKwLoc(SourceLocation KLoc) { KindKwLoc = KLoc; } 
-   
- public: 
-   /// Build 'proc_bind' clause with argument \a A ('master', 'close' or 
-   ///        'spread'). 
-   /// 
-   /// \param A Argument of the clause ('master', 'close' or 'spread'). 
-   /// \param ALoc Starting location of the argument. 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param LParenLoc Location of '('. 
-   /// \param EndLoc Ending location of the clause. 
-   OMPProcBindClause(llvm::omp::ProcBindKind A, SourceLocation ALoc, 
-                     SourceLocation StartLoc, SourceLocation LParenLoc, 
-                     SourceLocation EndLoc) 
-       : OMPClause(llvm::omp::OMPC_proc_bind, StartLoc, EndLoc), 
-         LParenLoc(LParenLoc), Kind(A), KindKwLoc(ALoc) {} 
-   
-   /// Build an empty clause. 
-   OMPProcBindClause() 
-       : OMPClause(llvm::omp::OMPC_proc_bind, SourceLocation(), 
-                   SourceLocation()) {} 
-   
-   /// Sets the location of '('. 
-   void setLParenLoc(SourceLocation Loc) { LParenLoc = Loc; } 
-   
-   /// Returns the location of '('. 
-   SourceLocation getLParenLoc() const { return LParenLoc; } 
-   
-   /// Returns kind of the clause. 
-   llvm::omp::ProcBindKind getProcBindKind() const { return Kind; } 
-   
-   /// Returns location of clause kind. 
-   SourceLocation getProcBindKindKwLoc() const { return KindKwLoc; } 
-   
-   child_range children() { 
-     return child_range(child_iterator(), child_iterator()); 
-   } 
-   
-   const_child_range children() const { 
-     return const_child_range(const_child_iterator(), const_child_iterator()); 
-   } 
-   
-   child_range used_children() { 
-     return child_range(child_iterator(), child_iterator()); 
-   } 
-   const_child_range used_children() const { 
-     return const_child_range(const_child_iterator(), const_child_iterator()); 
-   } 
-   
-   static bool classof(const OMPClause *T) { 
-     return T->getClauseKind() == llvm::omp::OMPC_proc_bind; 
-   } 
- }; 
-   
- /// This represents 'unified_address' clause in the '#pragma omp requires' 
- /// directive. 
- /// 
- /// \code 
- /// #pragma omp requires unified_address 
- /// \endcode 
- /// In this example directive '#pragma omp requires' has 'unified_address' 
- /// clause. 
- class OMPUnifiedAddressClause final 
-     : public OMPNoChildClause<llvm::omp::OMPC_unified_address> { 
- public: 
-   friend class OMPClauseReader; 
-   /// Build 'unified_address' clause. 
-   /// 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param EndLoc Ending location of the clause. 
-   OMPUnifiedAddressClause(SourceLocation StartLoc, SourceLocation EndLoc) 
-       : OMPNoChildClause(StartLoc, EndLoc) {} 
-   
-   /// Build an empty clause. 
-   OMPUnifiedAddressClause() : OMPNoChildClause() {} 
- }; 
-   
- /// This represents 'unified_shared_memory' clause in the '#pragma omp requires' 
- /// directive. 
- /// 
- /// \code 
- /// #pragma omp requires unified_shared_memory 
- /// \endcode 
- /// In this example directive '#pragma omp requires' has 'unified_shared_memory' 
- /// clause. 
- class OMPUnifiedSharedMemoryClause final : public OMPClause { 
- public: 
-   friend class OMPClauseReader; 
-   /// Build 'unified_shared_memory' clause. 
-   /// 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param EndLoc Ending location of the clause. 
-   OMPUnifiedSharedMemoryClause(SourceLocation StartLoc, SourceLocation EndLoc) 
-       : OMPClause(llvm::omp::OMPC_unified_shared_memory, StartLoc, EndLoc) {} 
-   
-   /// Build an empty clause. 
-   OMPUnifiedSharedMemoryClause() 
-       : OMPClause(llvm::omp::OMPC_unified_shared_memory, SourceLocation(), 
-                   SourceLocation()) {} 
-   
-   child_range children() { 
-     return child_range(child_iterator(), child_iterator()); 
-   } 
-   
-   const_child_range children() const { 
-     return const_child_range(const_child_iterator(), const_child_iterator()); 
-   } 
-   
-   child_range used_children() { 
-     return child_range(child_iterator(), child_iterator()); 
-   } 
-   const_child_range used_children() const { 
-     return const_child_range(const_child_iterator(), const_child_iterator()); 
-   } 
-   
-   static bool classof(const OMPClause *T) { 
-     return T->getClauseKind() == llvm::omp::OMPC_unified_shared_memory; 
-   } 
- }; 
-   
- /// This represents 'reverse_offload' clause in the '#pragma omp requires' 
- /// directive. 
- /// 
- /// \code 
- /// #pragma omp requires reverse_offload 
- /// \endcode 
- /// In this example directive '#pragma omp requires' has 'reverse_offload' 
- /// clause. 
- class OMPReverseOffloadClause final : public OMPClause { 
- public: 
-   friend class OMPClauseReader; 
-   /// Build 'reverse_offload' clause. 
-   /// 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param EndLoc Ending location of the clause. 
-   OMPReverseOffloadClause(SourceLocation StartLoc, SourceLocation EndLoc) 
-       : OMPClause(llvm::omp::OMPC_reverse_offload, StartLoc, EndLoc) {} 
-   
-   /// Build an empty clause. 
-   OMPReverseOffloadClause() 
-       : OMPClause(llvm::omp::OMPC_reverse_offload, SourceLocation(), 
-                   SourceLocation()) {} 
-   
-   child_range children() { 
-     return child_range(child_iterator(), child_iterator()); 
-   } 
-   
-   const_child_range children() const { 
-     return const_child_range(const_child_iterator(), const_child_iterator()); 
-   } 
-   
-   child_range used_children() { 
-     return child_range(child_iterator(), child_iterator()); 
-   } 
-   const_child_range used_children() const { 
-     return const_child_range(const_child_iterator(), const_child_iterator()); 
-   } 
-   
-   static bool classof(const OMPClause *T) { 
-     return T->getClauseKind() == llvm::omp::OMPC_reverse_offload; 
-   } 
- }; 
-   
- /// This represents 'dynamic_allocators' clause in the '#pragma omp requires' 
- /// directive. 
- /// 
- /// \code 
- /// #pragma omp requires dynamic_allocators 
- /// \endcode 
- /// In this example directive '#pragma omp requires' has 'dynamic_allocators' 
- /// clause. 
- class OMPDynamicAllocatorsClause final : public OMPClause { 
- public: 
-   friend class OMPClauseReader; 
-   /// Build 'dynamic_allocators' clause. 
-   /// 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param EndLoc Ending location of the clause. 
-   OMPDynamicAllocatorsClause(SourceLocation StartLoc, SourceLocation EndLoc) 
-       : OMPClause(llvm::omp::OMPC_dynamic_allocators, StartLoc, EndLoc) {} 
-   
-   /// Build an empty clause. 
-   OMPDynamicAllocatorsClause() 
-       : OMPClause(llvm::omp::OMPC_dynamic_allocators, SourceLocation(), 
-                   SourceLocation()) {} 
-   
-   child_range children() { 
-     return child_range(child_iterator(), child_iterator()); 
-   } 
-   
-   const_child_range children() const { 
-     return const_child_range(const_child_iterator(), const_child_iterator()); 
-   } 
-   
-   child_range used_children() { 
-     return child_range(child_iterator(), child_iterator()); 
-   } 
-   const_child_range used_children() const { 
-     return const_child_range(const_child_iterator(), const_child_iterator()); 
-   } 
-   
-   static bool classof(const OMPClause *T) { 
-     return T->getClauseKind() == llvm::omp::OMPC_dynamic_allocators; 
-   } 
- }; 
-   
- /// This represents 'atomic_default_mem_order' clause in the '#pragma omp 
- /// requires'  directive. 
- /// 
- /// \code 
- /// #pragma omp requires atomic_default_mem_order(seq_cst) 
- /// \endcode 
- /// In this example directive '#pragma omp requires' has simple 
- /// atomic_default_mem_order' clause with kind 'seq_cst'. 
- class OMPAtomicDefaultMemOrderClause final : public OMPClause { 
-   friend class OMPClauseReader; 
-   
-   /// Location of '(' 
-   SourceLocation LParenLoc; 
-   
-   /// A kind of the 'atomic_default_mem_order' clause. 
-   OpenMPAtomicDefaultMemOrderClauseKind Kind = 
-       OMPC_ATOMIC_DEFAULT_MEM_ORDER_unknown; 
-   
-   /// Start location of the kind in source code. 
-   SourceLocation KindKwLoc; 
-   
-   /// Set kind of the clause. 
-   /// 
-   /// \param K Kind of clause. 
-   void setAtomicDefaultMemOrderKind(OpenMPAtomicDefaultMemOrderClauseKind K) { 
-     Kind = K; 
-   } 
-   
-   /// Set clause kind location. 
-   /// 
-   /// \param KLoc Kind location. 
-   void setAtomicDefaultMemOrderKindKwLoc(SourceLocation KLoc) { 
-     KindKwLoc = KLoc; 
-   } 
-   
- public: 
-   /// Build 'atomic_default_mem_order' clause with argument \a A ('seq_cst', 
-   /// 'acq_rel' or 'relaxed'). 
-   /// 
-   /// \param A Argument of the clause ('seq_cst', 'acq_rel' or 'relaxed'). 
-   /// \param ALoc Starting location of the argument. 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param LParenLoc Location of '('. 
-   /// \param EndLoc Ending location of the clause. 
-   OMPAtomicDefaultMemOrderClause(OpenMPAtomicDefaultMemOrderClauseKind A, 
-                                  SourceLocation ALoc, SourceLocation StartLoc, 
-                                  SourceLocation LParenLoc, 
-                                  SourceLocation EndLoc) 
-       : OMPClause(llvm::omp::OMPC_atomic_default_mem_order, StartLoc, EndLoc), 
-         LParenLoc(LParenLoc), Kind(A), KindKwLoc(ALoc) {} 
-   
-   /// Build an empty clause. 
-   OMPAtomicDefaultMemOrderClause() 
-       : OMPClause(llvm::omp::OMPC_atomic_default_mem_order, SourceLocation(), 
-                   SourceLocation()) {} 
-   
-   /// Sets the location of '('. 
-   void setLParenLoc(SourceLocation Loc) { LParenLoc = Loc; } 
-   
-   /// Returns the locaiton of '('. 
-   SourceLocation getLParenLoc() const { return LParenLoc; } 
-   
-   /// Returns kind of the clause. 
-   OpenMPAtomicDefaultMemOrderClauseKind getAtomicDefaultMemOrderKind() const { 
-     return Kind; 
-   } 
-   
-   /// Returns location of clause kind. 
-   SourceLocation getAtomicDefaultMemOrderKindKwLoc() const { return KindKwLoc; } 
-   
-   child_range children() { 
-     return child_range(child_iterator(), child_iterator()); 
-   } 
-   
-   const_child_range children() const { 
-     return const_child_range(const_child_iterator(), const_child_iterator()); 
-   } 
-   
-   child_range used_children() { 
-     return child_range(child_iterator(), child_iterator()); 
-   } 
-   const_child_range used_children() const { 
-     return const_child_range(const_child_iterator(), const_child_iterator()); 
-   } 
-   
-   static bool classof(const OMPClause *T) { 
-     return T->getClauseKind() == llvm::omp::OMPC_atomic_default_mem_order; 
-   } 
- }; 
-   
- /// This represents 'at' clause in the '#pragma omp error' directive 
- /// 
- /// \code 
- /// #pragma omp error at(compilation) 
- /// \endcode 
- /// In this example directive '#pragma omp error' has simple 
- /// 'at' clause with kind 'complilation'. 
- class OMPAtClause final : public OMPClause { 
-   friend class OMPClauseReader; 
-   
-   /// Location of '(' 
-   SourceLocation LParenLoc; 
-   
-   /// A kind of the 'at' clause. 
-   OpenMPAtClauseKind Kind = OMPC_AT_unknown; 
-   
-   /// Start location of the kind in source code. 
-   SourceLocation KindKwLoc; 
-   
-   /// Set kind of the clause. 
-   /// 
-   /// \param K Kind of clause. 
-   void setAtKind(OpenMPAtClauseKind K) { Kind = K; } 
-   
-   /// Set clause kind location. 
-   /// 
-   /// \param KLoc Kind location. 
-   void setAtKindKwLoc(SourceLocation KLoc) { KindKwLoc = KLoc; } 
-   
-   /// Sets the location of '('. 
-   void setLParenLoc(SourceLocation Loc) { LParenLoc = Loc; } 
-   
- public: 
-   /// Build 'at' clause with argument \a A ('compilation' or 'execution'). 
-   /// 
-   /// \param A Argument of the clause ('compilation' or 'execution'). 
-   /// \param ALoc Starting location of the argument. 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param LParenLoc Location of '('. 
-   /// \param EndLoc Ending location of the clause. 
-   OMPAtClause(OpenMPAtClauseKind A, SourceLocation ALoc, 
-               SourceLocation StartLoc, SourceLocation LParenLoc, 
-               SourceLocation EndLoc) 
-       : OMPClause(llvm::omp::OMPC_at, StartLoc, EndLoc), LParenLoc(LParenLoc), 
-         Kind(A), KindKwLoc(ALoc) {} 
-   
-   /// Build an empty clause. 
-   OMPAtClause() 
-       : OMPClause(llvm::omp::OMPC_at, SourceLocation(), SourceLocation()) {} 
-   
-   /// Returns the locaiton of '('. 
-   SourceLocation getLParenLoc() const { return LParenLoc; } 
-   
-   /// Returns kind of the clause. 
-   OpenMPAtClauseKind getAtKind() const { return Kind; } 
-   
-   /// Returns location of clause kind. 
-   SourceLocation getAtKindKwLoc() const { return KindKwLoc; } 
-   
-   child_range children() { 
-     return child_range(child_iterator(), child_iterator()); 
-   } 
-   
-   const_child_range children() const { 
-     return const_child_range(const_child_iterator(), const_child_iterator()); 
-   } 
-   
-   child_range used_children() { 
-     return child_range(child_iterator(), child_iterator()); 
-   } 
-   const_child_range used_children() const { 
-     return const_child_range(const_child_iterator(), const_child_iterator()); 
-   } 
-   
-   static bool classof(const OMPClause *T) { 
-     return T->getClauseKind() == llvm::omp::OMPC_at; 
-   } 
- }; 
-   
- /// This represents 'severity' clause in the '#pragma omp error' directive 
- /// 
- /// \code 
- /// #pragma omp error severity(fatal) 
- /// \endcode 
- /// In this example directive '#pragma omp error' has simple 
- /// 'severity' clause with kind 'fatal'. 
- class OMPSeverityClause final : public OMPClause { 
-   friend class OMPClauseReader; 
-   
-   /// Location of '(' 
-   SourceLocation LParenLoc; 
-   
-   /// A kind of the 'severity' clause. 
-   OpenMPSeverityClauseKind Kind = OMPC_SEVERITY_unknown; 
-   
-   /// Start location of the kind in source code. 
-   SourceLocation KindKwLoc; 
-   
-   /// Set kind of the clause. 
-   /// 
-   /// \param K Kind of clause. 
-   void setSeverityKind(OpenMPSeverityClauseKind K) { Kind = K; } 
-   
-   /// Set clause kind location. 
-   /// 
-   /// \param KLoc Kind location. 
-   void setSeverityKindKwLoc(SourceLocation KLoc) { KindKwLoc = KLoc; } 
-   
-   /// Sets the location of '('. 
-   void setLParenLoc(SourceLocation Loc) { LParenLoc = Loc; } 
-   
- public: 
-   /// Build 'severity' clause with argument \a A ('fatal' or 'warning'). 
-   /// 
-   /// \param A Argument of the clause ('fatal' or 'warning'). 
-   /// \param ALoc Starting location of the argument. 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param LParenLoc Location of '('. 
-   /// \param EndLoc Ending location of the clause. 
-   OMPSeverityClause(OpenMPSeverityClauseKind A, SourceLocation ALoc, 
-                     SourceLocation StartLoc, SourceLocation LParenLoc, 
-                     SourceLocation EndLoc) 
-       : OMPClause(llvm::omp::OMPC_severity, StartLoc, EndLoc), 
-         LParenLoc(LParenLoc), Kind(A), KindKwLoc(ALoc) {} 
-   
-   /// Build an empty clause. 
-   OMPSeverityClause() 
-       : OMPClause(llvm::omp::OMPC_severity, SourceLocation(), 
-                   SourceLocation()) {} 
-   
-   /// Returns the locaiton of '('. 
-   SourceLocation getLParenLoc() const { return LParenLoc; } 
-   
-   /// Returns kind of the clause. 
-   OpenMPSeverityClauseKind getSeverityKind() const { return Kind; } 
-   
-   /// Returns location of clause kind. 
-   SourceLocation getSeverityKindKwLoc() const { return KindKwLoc; } 
-   
-   child_range children() { 
-     return child_range(child_iterator(), child_iterator()); 
-   } 
-   
-   const_child_range children() const { 
-     return const_child_range(const_child_iterator(), const_child_iterator()); 
-   } 
-   
-   child_range used_children() { 
-     return child_range(child_iterator(), child_iterator()); 
-   } 
-   const_child_range used_children() const { 
-     return const_child_range(const_child_iterator(), const_child_iterator()); 
-   } 
-   
-   static bool classof(const OMPClause *T) { 
-     return T->getClauseKind() == llvm::omp::OMPC_severity; 
-   } 
- }; 
-   
- /// This represents 'message' clause in the '#pragma omp error' directive 
- /// 
- /// \code 
- /// #pragma omp error message("GNU compiler required.") 
- /// \endcode 
- /// In this example directive '#pragma omp error' has simple 
- /// 'message' clause with user error message of "GNU compiler required.". 
- class OMPMessageClause final : public OMPClause { 
-   friend class OMPClauseReader; 
-   
-   /// Location of '(' 
-   SourceLocation LParenLoc; 
-   
-   // Expression of the 'message' clause. 
-   Stmt *MessageString = nullptr; 
-   
-   /// Set message string of the clause. 
-   void setMessageString(Expr *MS) { MessageString = MS; } 
-   
-   /// Sets the location of '('. 
-   void setLParenLoc(SourceLocation Loc) { LParenLoc = Loc; } 
-   
- public: 
-   /// Build 'message' clause with message string argument 
-   /// 
-   /// \param MS Argument of the clause (message string). 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param LParenLoc Location of '('. 
-   /// \param EndLoc Ending location of the clause. 
-   OMPMessageClause(Expr *MS, SourceLocation StartLoc, SourceLocation LParenLoc, 
-                    SourceLocation EndLoc) 
-       : OMPClause(llvm::omp::OMPC_message, StartLoc, EndLoc), 
-         LParenLoc(LParenLoc), MessageString(MS) {} 
-   
-   /// Build an empty clause. 
-   OMPMessageClause() 
-       : OMPClause(llvm::omp::OMPC_message, SourceLocation(), SourceLocation()) { 
-   } 
-   
-   /// Returns the locaiton of '('. 
-   SourceLocation getLParenLoc() const { return LParenLoc; } 
-   
-   /// Returns message string of the clause. 
-   Expr *getMessageString() const { return cast_or_null<Expr>(MessageString); } 
-   
-   child_range children() { 
-     return child_range(&MessageString, &MessageString + 1); 
-   } 
-   
-   const_child_range children() const { 
-     return const_child_range(&MessageString, &MessageString + 1); 
-   } 
-   
-   child_range used_children() { 
-     return child_range(child_iterator(), child_iterator()); 
-   } 
-   
-   const_child_range used_children() const { 
-     return const_child_range(const_child_iterator(), const_child_iterator()); 
-   } 
-   
-   static bool classof(const OMPClause *T) { 
-     return T->getClauseKind() == llvm::omp::OMPC_message; 
-   } 
- }; 
-   
- /// This represents 'schedule' clause in the '#pragma omp ...' directive. 
- /// 
- /// \code 
- /// #pragma omp for schedule(static, 3) 
- /// \endcode 
- /// In this example directive '#pragma omp for' has 'schedule' clause with 
- /// arguments 'static' and '3'. 
- class OMPScheduleClause : public OMPClause, public OMPClauseWithPreInit { 
-   friend class OMPClauseReader; 
-   
-   /// Location of '('. 
-   SourceLocation LParenLoc; 
-   
-   /// A kind of the 'schedule' clause. 
-   OpenMPScheduleClauseKind Kind = OMPC_SCHEDULE_unknown; 
-   
-   /// Modifiers for 'schedule' clause. 
-   enum {FIRST, SECOND, NUM_MODIFIERS}; 
-   OpenMPScheduleClauseModifier Modifiers[NUM_MODIFIERS]; 
-   
-   /// Locations of modifiers. 
-   SourceLocation ModifiersLoc[NUM_MODIFIERS]; 
-   
-   /// Start location of the schedule ind in source code. 
-   SourceLocation KindLoc; 
-   
-   /// Location of ',' (if any). 
-   SourceLocation CommaLoc; 
-   
-   /// Chunk size. 
-   Expr *ChunkSize = nullptr; 
-   
-   /// Set schedule kind. 
-   /// 
-   /// \param K Schedule kind. 
-   void setScheduleKind(OpenMPScheduleClauseKind K) { Kind = K; } 
-   
-   /// Set the first schedule modifier. 
-   /// 
-   /// \param M Schedule modifier. 
-   void setFirstScheduleModifier(OpenMPScheduleClauseModifier M) { 
-     Modifiers[FIRST] = M; 
-   } 
-   
-   /// Set the second schedule modifier. 
-   /// 
-   /// \param M Schedule modifier. 
-   void setSecondScheduleModifier(OpenMPScheduleClauseModifier M) { 
-     Modifiers[SECOND] = M; 
-   } 
-   
-   /// Set location of the first schedule modifier. 
-   void setFirstScheduleModifierLoc(SourceLocation Loc) { 
-     ModifiersLoc[FIRST] = Loc; 
-   } 
-   
-   /// Set location of the second schedule modifier. 
-   void setSecondScheduleModifierLoc(SourceLocation Loc) { 
-     ModifiersLoc[SECOND] = Loc; 
-   } 
-   
-   /// Set schedule modifier location. 
-   /// 
-   /// \param M Schedule modifier location. 
-   void setScheduleModifer(OpenMPScheduleClauseModifier M) { 
-     if (Modifiers[FIRST] == OMPC_SCHEDULE_MODIFIER_unknown) 
-       Modifiers[FIRST] = M; 
-     else { 
-       assert(Modifiers[SECOND] == OMPC_SCHEDULE_MODIFIER_unknown); 
-       Modifiers[SECOND] = M; 
-     } 
-   } 
-   
-   /// Sets the location of '('. 
-   /// 
-   /// \param Loc Location of '('. 
-   void setLParenLoc(SourceLocation Loc) { LParenLoc = Loc; } 
-   
-   /// Set schedule kind start location. 
-   /// 
-   /// \param KLoc Schedule kind location. 
-   void setScheduleKindLoc(SourceLocation KLoc) { KindLoc = KLoc; } 
-   
-   /// Set location of ','. 
-   /// 
-   /// \param Loc Location of ','. 
-   void setCommaLoc(SourceLocation Loc) { CommaLoc = Loc; } 
-   
-   /// Set chunk size. 
-   /// 
-   /// \param E Chunk size. 
-   void setChunkSize(Expr *E) { ChunkSize = E; } 
-   
- public: 
-   /// Build 'schedule' clause with schedule kind \a Kind and chunk size 
-   /// expression \a ChunkSize. 
-   /// 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param LParenLoc Location of '('. 
-   /// \param KLoc Starting location of the argument. 
-   /// \param CommaLoc Location of ','. 
-   /// \param EndLoc Ending location of the clause. 
-   /// \param Kind Schedule kind. 
-   /// \param ChunkSize Chunk size. 
-   /// \param HelperChunkSize Helper chunk size for combined directives. 
-   /// \param M1 The first modifier applied to 'schedule' clause. 
-   /// \param M1Loc Location of the first modifier 
-   /// \param M2 The second modifier applied to 'schedule' clause. 
-   /// \param M2Loc Location of the second modifier 
-   OMPScheduleClause(SourceLocation StartLoc, SourceLocation LParenLoc, 
-                     SourceLocation KLoc, SourceLocation CommaLoc, 
-                     SourceLocation EndLoc, OpenMPScheduleClauseKind Kind, 
-                     Expr *ChunkSize, Stmt *HelperChunkSize, 
-                     OpenMPScheduleClauseModifier M1, SourceLocation M1Loc, 
-                     OpenMPScheduleClauseModifier M2, SourceLocation M2Loc) 
-       : OMPClause(llvm::omp::OMPC_schedule, StartLoc, EndLoc), 
-         OMPClauseWithPreInit(this), LParenLoc(LParenLoc), Kind(Kind), 
-         KindLoc(KLoc), CommaLoc(CommaLoc), ChunkSize(ChunkSize) { 
-     setPreInitStmt(HelperChunkSize); 
-     Modifiers[FIRST] = M1; 
-     Modifiers[SECOND] = M2; 
-     ModifiersLoc[FIRST] = M1Loc; 
-     ModifiersLoc[SECOND] = M2Loc; 
-   } 
-   
-   /// Build an empty clause. 
-   explicit OMPScheduleClause() 
-       : OMPClause(llvm::omp::OMPC_schedule, SourceLocation(), SourceLocation()), 
-         OMPClauseWithPreInit(this) { 
-     Modifiers[FIRST] = OMPC_SCHEDULE_MODIFIER_unknown; 
-     Modifiers[SECOND] = OMPC_SCHEDULE_MODIFIER_unknown; 
-   } 
-   
-   /// Get kind of the clause. 
-   OpenMPScheduleClauseKind getScheduleKind() const { return Kind; } 
-   
-   /// Get the first modifier of the clause. 
-   OpenMPScheduleClauseModifier getFirstScheduleModifier() const { 
-     return Modifiers[FIRST]; 
-   } 
-   
-   /// Get the second modifier of the clause. 
-   OpenMPScheduleClauseModifier getSecondScheduleModifier() const { 
-     return Modifiers[SECOND]; 
-   } 
-   
-   /// Get location of '('. 
-   SourceLocation getLParenLoc() { return LParenLoc; } 
-   
-   /// Get kind location. 
-   SourceLocation getScheduleKindLoc() { return KindLoc; } 
-   
-   /// Get the first modifier location. 
-   SourceLocation getFirstScheduleModifierLoc() const { 
-     return ModifiersLoc[FIRST]; 
-   } 
-   
-   /// Get the second modifier location. 
-   SourceLocation getSecondScheduleModifierLoc() const { 
-     return ModifiersLoc[SECOND]; 
-   } 
-   
-   /// Get location of ','. 
-   SourceLocation getCommaLoc() { return CommaLoc; } 
-   
-   /// Get chunk size. 
-   Expr *getChunkSize() { return ChunkSize; } 
-   
-   /// Get chunk size. 
-   const Expr *getChunkSize() const { return ChunkSize; } 
-   
-   child_range children() { 
-     return child_range(reinterpret_cast<Stmt **>(&ChunkSize), 
-                        reinterpret_cast<Stmt **>(&ChunkSize) + 1); 
-   } 
-   
-   const_child_range children() const { 
-     auto Children = const_cast<OMPScheduleClause *>(this)->children(); 
-     return const_child_range(Children.begin(), Children.end()); 
-   } 
-   
-   child_range used_children() { 
-     return child_range(child_iterator(), child_iterator()); 
-   } 
-   const_child_range used_children() const { 
-     return const_child_range(const_child_iterator(), const_child_iterator()); 
-   } 
-   
-   static bool classof(const OMPClause *T) { 
-     return T->getClauseKind() == llvm::omp::OMPC_schedule; 
-   } 
- }; 
-   
- /// This represents 'ordered' clause in the '#pragma omp ...' directive. 
- /// 
- /// \code 
- /// #pragma omp for ordered (2) 
- /// \endcode 
- /// In this example directive '#pragma omp for' has 'ordered' clause with 
- /// parameter 2. 
- class OMPOrderedClause final 
-     : public OMPClause, 
-       private llvm::TrailingObjects<OMPOrderedClause, Expr *> { 
-   friend class OMPClauseReader; 
-   friend TrailingObjects; 
-   
-   /// Location of '('. 
-   SourceLocation LParenLoc; 
-   
-   /// Number of for-loops. 
-   Stmt *NumForLoops = nullptr; 
-   
-   /// Real number of loops. 
-   unsigned NumberOfLoops = 0; 
-   
-   /// Build 'ordered' clause. 
-   /// 
-   /// \param Num Expression, possibly associated with this clause. 
-   /// \param NumLoops Number of loops, associated with this clause. 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param LParenLoc Location of '('. 
-   /// \param EndLoc Ending location of the clause. 
-   OMPOrderedClause(Expr *Num, unsigned NumLoops, SourceLocation StartLoc, 
-                    SourceLocation LParenLoc, SourceLocation EndLoc) 
-       : OMPClause(llvm::omp::OMPC_ordered, StartLoc, EndLoc), 
-         LParenLoc(LParenLoc), NumForLoops(Num), NumberOfLoops(NumLoops) {} 
-   
-   /// Build an empty clause. 
-   explicit OMPOrderedClause(unsigned NumLoops) 
-       : OMPClause(llvm::omp::OMPC_ordered, SourceLocation(), SourceLocation()), 
-         NumberOfLoops(NumLoops) {} 
-   
-   /// Set the number of associated for-loops. 
-   void setNumForLoops(Expr *Num) { NumForLoops = Num; } 
-   
- public: 
-   /// Build 'ordered' clause. 
-   /// 
-   /// \param Num Expression, possibly associated with this clause. 
-   /// \param NumLoops Number of loops, associated with this clause. 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param LParenLoc Location of '('. 
-   /// \param EndLoc Ending location of the clause. 
-   static OMPOrderedClause *Create(const ASTContext &C, Expr *Num, 
-                                   unsigned NumLoops, SourceLocation StartLoc, 
-                                   SourceLocation LParenLoc, 
-                                   SourceLocation EndLoc); 
-   
-   /// Build an empty clause. 
-   static OMPOrderedClause* CreateEmpty(const ASTContext &C, unsigned NumLoops); 
-   
-   /// Sets the location of '('. 
-   void setLParenLoc(SourceLocation Loc) { LParenLoc = Loc; } 
-   
-   /// Returns the location of '('. 
-   SourceLocation getLParenLoc() const { return LParenLoc; } 
-   
-   /// Return the number of associated for-loops. 
-   Expr *getNumForLoops() const { return cast_or_null<Expr>(NumForLoops); } 
-   
-   /// Set number of iterations for the specified loop. 
-   void setLoopNumIterations(unsigned NumLoop, Expr *NumIterations); 
-   /// Get number of iterations for all the loops. 
-   ArrayRef<Expr *> getLoopNumIterations() const; 
-   
-   /// Set loop counter for the specified loop. 
-   void setLoopCounter(unsigned NumLoop, Expr *Counter); 
-   /// Get loops counter for the specified loop. 
-   Expr *getLoopCounter(unsigned NumLoop); 
-   const Expr *getLoopCounter(unsigned NumLoop) const; 
-   
-   child_range children() { return child_range(&NumForLoops, &NumForLoops + 1); } 
-   
-   const_child_range children() const { 
-     return const_child_range(&NumForLoops, &NumForLoops + 1); 
-   } 
-   
-   child_range used_children() { 
-     return child_range(child_iterator(), child_iterator()); 
-   } 
-   const_child_range used_children() const { 
-     return const_child_range(const_child_iterator(), const_child_iterator()); 
-   } 
-   
-   static bool classof(const OMPClause *T) { 
-     return T->getClauseKind() == llvm::omp::OMPC_ordered; 
-   } 
- }; 
-   
- /// This represents 'nowait' clause in the '#pragma omp ...' directive. 
- /// 
- /// \code 
- /// #pragma omp for nowait 
- /// \endcode 
- /// In this example directive '#pragma omp for' has 'nowait' clause. 
- class OMPNowaitClause final : public OMPNoChildClause<llvm::omp::OMPC_nowait> { 
- public: 
-   /// Build 'nowait' clause. 
-   /// 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param EndLoc Ending location of the clause. 
-   OMPNowaitClause(SourceLocation StartLoc = SourceLocation(), 
-                   SourceLocation EndLoc = SourceLocation()) 
-       : OMPNoChildClause(StartLoc, EndLoc) {} 
- }; 
-   
- /// This represents 'untied' clause in the '#pragma omp ...' directive. 
- /// 
- /// \code 
- /// #pragma omp task untied 
- /// \endcode 
- /// In this example directive '#pragma omp task' has 'untied' clause. 
- class OMPUntiedClause : public OMPClause { 
- public: 
-   /// Build 'untied' clause. 
-   /// 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param EndLoc Ending location of the clause. 
-   OMPUntiedClause(SourceLocation StartLoc, SourceLocation EndLoc) 
-       : OMPClause(llvm::omp::OMPC_untied, StartLoc, EndLoc) {} 
-   
-   /// Build an empty clause. 
-   OMPUntiedClause() 
-       : OMPClause(llvm::omp::OMPC_untied, SourceLocation(), SourceLocation()) {} 
-   
-   child_range children() { 
-     return child_range(child_iterator(), child_iterator()); 
-   } 
-   
-   const_child_range children() const { 
-     return const_child_range(const_child_iterator(), const_child_iterator()); 
-   } 
-   
-   child_range used_children() { 
-     return child_range(child_iterator(), child_iterator()); 
-   } 
-   const_child_range used_children() const { 
-     return const_child_range(const_child_iterator(), const_child_iterator()); 
-   } 
-   
-   static bool classof(const OMPClause *T) { 
-     return T->getClauseKind() == llvm::omp::OMPC_untied; 
-   } 
- }; 
-   
- /// This represents 'mergeable' clause in the '#pragma omp ...' 
- /// directive. 
- /// 
- /// \code 
- /// #pragma omp task mergeable 
- /// \endcode 
- /// In this example directive '#pragma omp task' has 'mergeable' clause. 
- class OMPMergeableClause : public OMPClause { 
- public: 
-   /// Build 'mergeable' clause. 
-   /// 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param EndLoc Ending location of the clause. 
-   OMPMergeableClause(SourceLocation StartLoc, SourceLocation EndLoc) 
-       : OMPClause(llvm::omp::OMPC_mergeable, StartLoc, EndLoc) {} 
-   
-   /// Build an empty clause. 
-   OMPMergeableClause() 
-       : OMPClause(llvm::omp::OMPC_mergeable, SourceLocation(), 
-                   SourceLocation()) {} 
-   
-   child_range children() { 
-     return child_range(child_iterator(), child_iterator()); 
-   } 
-   
-   const_child_range children() const { 
-     return const_child_range(const_child_iterator(), const_child_iterator()); 
-   } 
-   
-   child_range used_children() { 
-     return child_range(child_iterator(), child_iterator()); 
-   } 
-   const_child_range used_children() const { 
-     return const_child_range(const_child_iterator(), const_child_iterator()); 
-   } 
-   
-   static bool classof(const OMPClause *T) { 
-     return T->getClauseKind() == llvm::omp::OMPC_mergeable; 
-   } 
- }; 
-   
- /// This represents 'read' clause in the '#pragma omp atomic' directive. 
- /// 
- /// \code 
- /// #pragma omp atomic read 
- /// \endcode 
- /// In this example directive '#pragma omp atomic' has 'read' clause. 
- class OMPReadClause : public OMPClause { 
- public: 
-   /// Build 'read' clause. 
-   /// 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param EndLoc Ending location of the clause. 
-   OMPReadClause(SourceLocation StartLoc, SourceLocation EndLoc) 
-       : OMPClause(llvm::omp::OMPC_read, StartLoc, EndLoc) {} 
-   
-   /// Build an empty clause. 
-   OMPReadClause() 
-       : OMPClause(llvm::omp::OMPC_read, SourceLocation(), SourceLocation()) {} 
-   
-   child_range children() { 
-     return child_range(child_iterator(), child_iterator()); 
-   } 
-   
-   const_child_range children() const { 
-     return const_child_range(const_child_iterator(), const_child_iterator()); 
-   } 
-   
-   child_range used_children() { 
-     return child_range(child_iterator(), child_iterator()); 
-   } 
-   const_child_range used_children() const { 
-     return const_child_range(const_child_iterator(), const_child_iterator()); 
-   } 
-   
-   static bool classof(const OMPClause *T) { 
-     return T->getClauseKind() == llvm::omp::OMPC_read; 
-   } 
- }; 
-   
- /// This represents 'write' clause in the '#pragma omp atomic' directive. 
- /// 
- /// \code 
- /// #pragma omp atomic write 
- /// \endcode 
- /// In this example directive '#pragma omp atomic' has 'write' clause. 
- class OMPWriteClause : public OMPClause { 
- public: 
-   /// Build 'write' clause. 
-   /// 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param EndLoc Ending location of the clause. 
-   OMPWriteClause(SourceLocation StartLoc, SourceLocation EndLoc) 
-       : OMPClause(llvm::omp::OMPC_write, StartLoc, EndLoc) {} 
-   
-   /// Build an empty clause. 
-   OMPWriteClause() 
-       : OMPClause(llvm::omp::OMPC_write, SourceLocation(), SourceLocation()) {} 
-   
-   child_range children() { 
-     return child_range(child_iterator(), child_iterator()); 
-   } 
-   
-   const_child_range children() const { 
-     return const_child_range(const_child_iterator(), const_child_iterator()); 
-   } 
-   
-   child_range used_children() { 
-     return child_range(child_iterator(), child_iterator()); 
-   } 
-   const_child_range used_children() const { 
-     return const_child_range(const_child_iterator(), const_child_iterator()); 
-   } 
-   
-   static bool classof(const OMPClause *T) { 
-     return T->getClauseKind() == llvm::omp::OMPC_write; 
-   } 
- }; 
-   
- /// This represents 'update' clause in the '#pragma omp atomic' 
- /// directive. 
- /// 
- /// \code 
- /// #pragma omp atomic update 
- /// \endcode 
- /// In this example directive '#pragma omp atomic' has 'update' clause. 
- /// Also, this class represents 'update' clause in  '#pragma omp depobj' 
- /// directive. 
- /// 
- /// \code 
- /// #pragma omp depobj(a) update(in) 
- /// \endcode 
- /// In this example directive '#pragma omp depobj' has 'update' clause with 'in' 
- /// dependence kind. 
- class OMPUpdateClause final 
-     : public OMPClause, 
-       private llvm::TrailingObjects<OMPUpdateClause, SourceLocation, 
-                                     OpenMPDependClauseKind> { 
-   friend class OMPClauseReader; 
-   friend TrailingObjects; 
-   
-   /// true if extended version of the clause for 'depobj' directive. 
-   bool IsExtended = false; 
-   
-   /// Define the sizes of each trailing object array except the last one. This 
-   /// is required for TrailingObjects to work properly. 
-   size_t numTrailingObjects(OverloadToken<SourceLocation>) const { 
-     // 2 locations: for '(' and argument location. 
-     return IsExtended ? 2 : 0; 
-   } 
-   
-   /// Sets the location of '(' in clause for 'depobj' directive. 
-   void setLParenLoc(SourceLocation Loc) { 
-     assert(IsExtended && "Expected extended clause."); 
-     *getTrailingObjects<SourceLocation>() = Loc; 
-   } 
-   
-   /// Sets the location of '(' in clause for 'depobj' directive. 
-   void setArgumentLoc(SourceLocation Loc) { 
-     assert(IsExtended && "Expected extended clause."); 
-     *std::next(getTrailingObjects<SourceLocation>(), 1) = Loc; 
-   } 
-   
-   /// Sets the dependence kind for the clause for 'depobj' directive. 
-   void setDependencyKind(OpenMPDependClauseKind DK) { 
-     assert(IsExtended && "Expected extended clause."); 
-     *getTrailingObjects<OpenMPDependClauseKind>() = DK; 
-   } 
-   
-   /// Build 'update' clause. 
-   /// 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param EndLoc Ending location of the clause. 
-   OMPUpdateClause(SourceLocation StartLoc, SourceLocation EndLoc, 
-                   bool IsExtended) 
-       : OMPClause(llvm::omp::OMPC_update, StartLoc, EndLoc), 
-         IsExtended(IsExtended) {} 
-   
-   /// Build an empty clause. 
-   OMPUpdateClause(bool IsExtended) 
-       : OMPClause(llvm::omp::OMPC_update, SourceLocation(), SourceLocation()), 
-         IsExtended(IsExtended) {} 
-   
- public: 
-   /// Creates clause for 'atomic' directive. 
-   /// 
-   /// \param C AST context. 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param EndLoc Ending location of the clause. 
-   static OMPUpdateClause *Create(const ASTContext &C, SourceLocation StartLoc, 
-                                  SourceLocation EndLoc); 
-   
-   /// Creates clause for 'depobj' directive. 
-   /// 
-   /// \param C AST context. 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param LParenLoc Location of '('. 
-   /// \param ArgumentLoc Location of the argument. 
-   /// \param DK Dependence kind. 
-   /// \param EndLoc Ending location of the clause. 
-   static OMPUpdateClause *Create(const ASTContext &C, SourceLocation StartLoc, 
-                                  SourceLocation LParenLoc, 
-                                  SourceLocation ArgumentLoc, 
-                                  OpenMPDependClauseKind DK, 
-                                  SourceLocation EndLoc); 
-   
-   /// Creates an empty clause with the place for \a N variables. 
-   /// 
-   /// \param C AST context. 
-   /// \param IsExtended true if extended clause for 'depobj' directive must be 
-   /// created. 
-   static OMPUpdateClause *CreateEmpty(const ASTContext &C, bool IsExtended); 
-   
-   /// Checks if the clause is the extended clauses for 'depobj' directive. 
-   bool isExtended() const { return IsExtended; } 
-   
-   child_range children() { 
-     return child_range(child_iterator(), child_iterator()); 
-   } 
-   
-   const_child_range children() const { 
-     return const_child_range(const_child_iterator(), const_child_iterator()); 
-   } 
-   
-   child_range used_children() { 
-     return child_range(child_iterator(), child_iterator()); 
-   } 
-   const_child_range used_children() const { 
-     return const_child_range(const_child_iterator(), const_child_iterator()); 
-   } 
-   
-   /// Gets the location of '(' in clause for 'depobj' directive. 
-   SourceLocation getLParenLoc() const { 
-     assert(IsExtended && "Expected extended clause."); 
-     return *getTrailingObjects<SourceLocation>(); 
-   } 
-   
-   /// Gets the location of argument in clause for 'depobj' directive. 
-   SourceLocation getArgumentLoc() const { 
-     assert(IsExtended && "Expected extended clause."); 
-     return *std::next(getTrailingObjects<SourceLocation>(), 1); 
-   } 
-   
-   /// Gets the dependence kind in clause for 'depobj' directive. 
-   OpenMPDependClauseKind getDependencyKind() const { 
-     assert(IsExtended && "Expected extended clause."); 
-     return *getTrailingObjects<OpenMPDependClauseKind>(); 
-   } 
-   
-   static bool classof(const OMPClause *T) { 
-     return T->getClauseKind() == llvm::omp::OMPC_update; 
-   } 
- }; 
-   
- /// This represents 'capture' clause in the '#pragma omp atomic' 
- /// directive. 
- /// 
- /// \code 
- /// #pragma omp atomic capture 
- /// \endcode 
- /// In this example directive '#pragma omp atomic' has 'capture' clause. 
- class OMPCaptureClause : public OMPClause { 
- public: 
-   /// Build 'capture' clause. 
-   /// 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param EndLoc Ending location of the clause. 
-   OMPCaptureClause(SourceLocation StartLoc, SourceLocation EndLoc) 
-       : OMPClause(llvm::omp::OMPC_capture, StartLoc, EndLoc) {} 
-   
-   /// Build an empty clause. 
-   OMPCaptureClause() 
-       : OMPClause(llvm::omp::OMPC_capture, SourceLocation(), SourceLocation()) { 
-   } 
-   
-   child_range children() { 
-     return child_range(child_iterator(), child_iterator()); 
-   } 
-   
-   const_child_range children() const { 
-     return const_child_range(const_child_iterator(), const_child_iterator()); 
-   } 
-   
-   child_range used_children() { 
-     return child_range(child_iterator(), child_iterator()); 
-   } 
-   const_child_range used_children() const { 
-     return const_child_range(const_child_iterator(), const_child_iterator()); 
-   } 
-   
-   static bool classof(const OMPClause *T) { 
-     return T->getClauseKind() == llvm::omp::OMPC_capture; 
-   } 
- }; 
-   
- /// This represents 'compare' clause in the '#pragma omp atomic' 
- /// directive. 
- /// 
- /// \code 
- /// #pragma omp atomic compare 
- /// \endcode 
- /// In this example directive '#pragma omp atomic' has 'compare' clause. 
- class OMPCompareClause final : public OMPClause { 
- public: 
-   /// Build 'compare' clause. 
-   /// 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param EndLoc Ending location of the clause. 
-   OMPCompareClause(SourceLocation StartLoc, SourceLocation EndLoc) 
-       : OMPClause(llvm::omp::OMPC_compare, StartLoc, EndLoc) {} 
-   
-   /// Build an empty clause. 
-   OMPCompareClause() 
-       : OMPClause(llvm::omp::OMPC_compare, SourceLocation(), SourceLocation()) { 
-   } 
-   
-   child_range children() { 
-     return child_range(child_iterator(), child_iterator()); 
-   } 
-   
-   const_child_range children() const { 
-     return const_child_range(const_child_iterator(), const_child_iterator()); 
-   } 
-   
-   child_range used_children() { 
-     return child_range(child_iterator(), child_iterator()); 
-   } 
-   const_child_range used_children() const { 
-     return const_child_range(const_child_iterator(), const_child_iterator()); 
-   } 
-   
-   static bool classof(const OMPClause *T) { 
-     return T->getClauseKind() == llvm::omp::OMPC_compare; 
-   } 
- }; 
-   
- /// This represents 'seq_cst' clause in the '#pragma omp atomic' 
- /// directive. 
- /// 
- /// \code 
- /// #pragma omp atomic seq_cst 
- /// \endcode 
- /// In this example directive '#pragma omp atomic' has 'seq_cst' clause. 
- class OMPSeqCstClause : public OMPClause { 
- public: 
-   /// Build 'seq_cst' clause. 
-   /// 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param EndLoc Ending location of the clause. 
-   OMPSeqCstClause(SourceLocation StartLoc, SourceLocation EndLoc) 
-       : OMPClause(llvm::omp::OMPC_seq_cst, StartLoc, EndLoc) {} 
-   
-   /// Build an empty clause. 
-   OMPSeqCstClause() 
-       : OMPClause(llvm::omp::OMPC_seq_cst, SourceLocation(), SourceLocation()) { 
-   } 
-   
-   child_range children() { 
-     return child_range(child_iterator(), child_iterator()); 
-   } 
-   
-   const_child_range children() const { 
-     return const_child_range(const_child_iterator(), const_child_iterator()); 
-   } 
-   
-   child_range used_children() { 
-     return child_range(child_iterator(), child_iterator()); 
-   } 
-   const_child_range used_children() const { 
-     return const_child_range(const_child_iterator(), const_child_iterator()); 
-   } 
-   
-   static bool classof(const OMPClause *T) { 
-     return T->getClauseKind() == llvm::omp::OMPC_seq_cst; 
-   } 
- }; 
-   
- /// This represents 'acq_rel' clause in the '#pragma omp atomic|flush' 
- /// directives. 
- /// 
- /// \code 
- /// #pragma omp flush acq_rel 
- /// \endcode 
- /// In this example directive '#pragma omp flush' has 'acq_rel' clause. 
- class OMPAcqRelClause final : public OMPClause { 
- public: 
-   /// Build 'ack_rel' clause. 
-   /// 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param EndLoc Ending location of the clause. 
-   OMPAcqRelClause(SourceLocation StartLoc, SourceLocation EndLoc) 
-       : OMPClause(llvm::omp::OMPC_acq_rel, StartLoc, EndLoc) {} 
-   
-   /// Build an empty clause. 
-   OMPAcqRelClause() 
-       : OMPClause(llvm::omp::OMPC_acq_rel, SourceLocation(), SourceLocation()) { 
-   } 
-   
-   child_range children() { 
-     return child_range(child_iterator(), child_iterator()); 
-   } 
-   
-   const_child_range children() const { 
-     return const_child_range(const_child_iterator(), const_child_iterator()); 
-   } 
-   
-   child_range used_children() { 
-     return child_range(child_iterator(), child_iterator()); 
-   } 
-   const_child_range used_children() const { 
-     return const_child_range(const_child_iterator(), const_child_iterator()); 
-   } 
-   
-   static bool classof(const OMPClause *T) { 
-     return T->getClauseKind() == llvm::omp::OMPC_acq_rel; 
-   } 
- }; 
-   
- /// This represents 'acquire' clause in the '#pragma omp atomic|flush' 
- /// directives. 
- /// 
- /// \code 
- /// #pragma omp flush acquire 
- /// \endcode 
- /// In this example directive '#pragma omp flush' has 'acquire' clause. 
- class OMPAcquireClause final : public OMPClause { 
- public: 
-   /// Build 'acquire' clause. 
-   /// 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param EndLoc Ending location of the clause. 
-   OMPAcquireClause(SourceLocation StartLoc, SourceLocation EndLoc) 
-       : OMPClause(llvm::omp::OMPC_acquire, StartLoc, EndLoc) {} 
-   
-   /// Build an empty clause. 
-   OMPAcquireClause() 
-       : OMPClause(llvm::omp::OMPC_acquire, SourceLocation(), SourceLocation()) { 
-   } 
-   
-   child_range children() { 
-     return child_range(child_iterator(), child_iterator()); 
-   } 
-   
-   const_child_range children() const { 
-     return const_child_range(const_child_iterator(), const_child_iterator()); 
-   } 
-   
-   child_range used_children() { 
-     return child_range(child_iterator(), child_iterator()); 
-   } 
-   const_child_range used_children() const { 
-     return const_child_range(const_child_iterator(), const_child_iterator()); 
-   } 
-   
-   static bool classof(const OMPClause *T) { 
-     return T->getClauseKind() == llvm::omp::OMPC_acquire; 
-   } 
- }; 
-   
- /// This represents 'release' clause in the '#pragma omp atomic|flush' 
- /// directives. 
- /// 
- /// \code 
- /// #pragma omp flush release 
- /// \endcode 
- /// In this example directive '#pragma omp flush' has 'release' clause. 
- class OMPReleaseClause final : public OMPClause { 
- public: 
-   /// Build 'release' clause. 
-   /// 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param EndLoc Ending location of the clause. 
-   OMPReleaseClause(SourceLocation StartLoc, SourceLocation EndLoc) 
-       : OMPClause(llvm::omp::OMPC_release, StartLoc, EndLoc) {} 
-   
-   /// Build an empty clause. 
-   OMPReleaseClause() 
-       : OMPClause(llvm::omp::OMPC_release, SourceLocation(), SourceLocation()) { 
-   } 
-   
-   child_range children() { 
-     return child_range(child_iterator(), child_iterator()); 
-   } 
-   
-   const_child_range children() const { 
-     return const_child_range(const_child_iterator(), const_child_iterator()); 
-   } 
-   
-   child_range used_children() { 
-     return child_range(child_iterator(), child_iterator()); 
-   } 
-   const_child_range used_children() const { 
-     return const_child_range(const_child_iterator(), const_child_iterator()); 
-   } 
-   
-   static bool classof(const OMPClause *T) { 
-     return T->getClauseKind() == llvm::omp::OMPC_release; 
-   } 
- }; 
-   
- /// This represents 'relaxed' clause in the '#pragma omp atomic' 
- /// directives. 
- /// 
- /// \code 
- /// #pragma omp atomic relaxed 
- /// \endcode 
- /// In this example directive '#pragma omp atomic' has 'relaxed' clause. 
- class OMPRelaxedClause final : public OMPClause { 
- public: 
-   /// Build 'relaxed' clause. 
-   /// 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param EndLoc Ending location of the clause. 
-   OMPRelaxedClause(SourceLocation StartLoc, SourceLocation EndLoc) 
-       : OMPClause(llvm::omp::OMPC_relaxed, StartLoc, EndLoc) {} 
-   
-   /// Build an empty clause. 
-   OMPRelaxedClause() 
-       : OMPClause(llvm::omp::OMPC_relaxed, SourceLocation(), SourceLocation()) { 
-   } 
-   
-   child_range children() { 
-     return child_range(child_iterator(), child_iterator()); 
-   } 
-   
-   const_child_range children() const { 
-     return const_child_range(const_child_iterator(), const_child_iterator()); 
-   } 
-   
-   child_range used_children() { 
-     return child_range(child_iterator(), child_iterator()); 
-   } 
-   const_child_range used_children() const { 
-     return const_child_range(const_child_iterator(), const_child_iterator()); 
-   } 
-   
-   static bool classof(const OMPClause *T) { 
-     return T->getClauseKind() == llvm::omp::OMPC_relaxed; 
-   } 
- }; 
-   
- /// This represents clause 'private' in the '#pragma omp ...' directives. 
- /// 
- /// \code 
- /// #pragma omp parallel private(a,b) 
- /// \endcode 
- /// In this example directive '#pragma omp parallel' has clause 'private' 
- /// with the variables 'a' and 'b'. 
- class OMPPrivateClause final 
-     : public OMPVarListClause<OMPPrivateClause>, 
-       private llvm::TrailingObjects<OMPPrivateClause, Expr *> { 
-   friend class OMPClauseReader; 
-   friend OMPVarListClause; 
-   friend TrailingObjects; 
-   
-   /// Build clause with number of variables \a N. 
-   /// 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param LParenLoc Location of '('. 
-   /// \param EndLoc Ending location of the clause. 
-   /// \param N Number of the variables in the clause. 
-   OMPPrivateClause(SourceLocation StartLoc, SourceLocation LParenLoc, 
-                    SourceLocation EndLoc, unsigned N) 
-       : OMPVarListClause<OMPPrivateClause>(llvm::omp::OMPC_private, StartLoc, 
-                                            LParenLoc, EndLoc, N) {} 
-   
-   /// Build an empty clause. 
-   /// 
-   /// \param N Number of variables. 
-   explicit OMPPrivateClause(unsigned N) 
-       : OMPVarListClause<OMPPrivateClause>(llvm::omp::OMPC_private, 
-                                            SourceLocation(), SourceLocation(), 
-                                            SourceLocation(), N) {} 
-   
-   /// Sets the list of references to private copies with initializers for 
-   /// new private variables. 
-   /// \param VL List of references. 
-   void setPrivateCopies(ArrayRef<Expr *> VL); 
-   
-   /// Gets the list of references to private copies with initializers for 
-   /// new private variables. 
-   MutableArrayRef<Expr *> getPrivateCopies() { 
-     return MutableArrayRef<Expr *>(varlist_end(), varlist_size()); 
-   } 
-   ArrayRef<const Expr *> getPrivateCopies() const { 
-     return llvm::ArrayRef(varlist_end(), varlist_size()); 
-   } 
-   
- public: 
-   /// Creates clause with a list of variables \a VL. 
-   /// 
-   /// \param C AST context. 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param LParenLoc Location of '('. 
-   /// \param EndLoc Ending location of the clause. 
-   /// \param VL List of references to the variables. 
-   /// \param PrivateVL List of references to private copies with initializers. 
-   static OMPPrivateClause *Create(const ASTContext &C, SourceLocation StartLoc, 
-                                   SourceLocation LParenLoc, 
-                                   SourceLocation EndLoc, ArrayRef<Expr *> VL, 
-                                   ArrayRef<Expr *> PrivateVL); 
-   
-   /// Creates an empty clause with the place for \a N variables. 
-   /// 
-   /// \param C AST context. 
-   /// \param N The number of variables. 
-   static OMPPrivateClause *CreateEmpty(const ASTContext &C, unsigned N); 
-   
-   using private_copies_iterator = MutableArrayRef<Expr *>::iterator; 
-   using private_copies_const_iterator = ArrayRef<const Expr *>::iterator; 
-   using private_copies_range = llvm::iterator_range<private_copies_iterator>; 
-   using private_copies_const_range = 
-       llvm::iterator_range<private_copies_const_iterator>; 
-   
-   private_copies_range private_copies() { 
-     return private_copies_range(getPrivateCopies().begin(), 
-                                 getPrivateCopies().end()); 
-   } 
-   
-   private_copies_const_range private_copies() const { 
-     return private_copies_const_range(getPrivateCopies().begin(), 
-                                       getPrivateCopies().end()); 
-   } 
-   
-   child_range children() { 
-     return child_range(reinterpret_cast<Stmt **>(varlist_begin()), 
-                        reinterpret_cast<Stmt **>(varlist_end())); 
-   } 
-   
-   const_child_range children() const { 
-     auto Children = const_cast<OMPPrivateClause *>(this)->children(); 
-     return const_child_range(Children.begin(), Children.end()); 
-   } 
-   
-   child_range used_children() { 
-     return child_range(child_iterator(), child_iterator()); 
-   } 
-   const_child_range used_children() const { 
-     return const_child_range(const_child_iterator(), const_child_iterator()); 
-   } 
-   
-   static bool classof(const OMPClause *T) { 
-     return T->getClauseKind() == llvm::omp::OMPC_private; 
-   } 
- }; 
-   
- /// This represents clause 'firstprivate' in the '#pragma omp ...' 
- /// directives. 
- /// 
- /// \code 
- /// #pragma omp parallel firstprivate(a,b) 
- /// \endcode 
- /// In this example directive '#pragma omp parallel' has clause 'firstprivate' 
- /// with the variables 'a' and 'b'. 
- class OMPFirstprivateClause final 
-     : public OMPVarListClause<OMPFirstprivateClause>, 
-       public OMPClauseWithPreInit, 
-       private llvm::TrailingObjects<OMPFirstprivateClause, Expr *> { 
-   friend class OMPClauseReader; 
-   friend OMPVarListClause; 
-   friend TrailingObjects; 
-   
-   /// Build clause with number of variables \a N. 
-   /// 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param LParenLoc Location of '('. 
-   /// \param EndLoc Ending location of the clause. 
-   /// \param N Number of the variables in the clause. 
-   OMPFirstprivateClause(SourceLocation StartLoc, SourceLocation LParenLoc, 
-                         SourceLocation EndLoc, unsigned N) 
-       : OMPVarListClause<OMPFirstprivateClause>(llvm::omp::OMPC_firstprivate, 
-                                                 StartLoc, LParenLoc, EndLoc, N), 
-         OMPClauseWithPreInit(this) {} 
-   
-   /// Build an empty clause. 
-   /// 
-   /// \param N Number of variables. 
-   explicit OMPFirstprivateClause(unsigned N) 
-       : OMPVarListClause<OMPFirstprivateClause>( 
-             llvm::omp::OMPC_firstprivate, SourceLocation(), SourceLocation(), 
-             SourceLocation(), N), 
-         OMPClauseWithPreInit(this) {} 
-   
-   /// Sets the list of references to private copies with initializers for 
-   /// new private variables. 
-   /// \param VL List of references. 
-   void setPrivateCopies(ArrayRef<Expr *> VL); 
-   
-   /// Gets the list of references to private copies with initializers for 
-   /// new private variables. 
-   MutableArrayRef<Expr *> getPrivateCopies() { 
-     return MutableArrayRef<Expr *>(varlist_end(), varlist_size()); 
-   } 
-   ArrayRef<const Expr *> getPrivateCopies() const { 
-     return llvm::ArrayRef(varlist_end(), varlist_size()); 
-   } 
-   
-   /// Sets the list of references to initializer variables for new 
-   /// private variables. 
-   /// \param VL List of references. 
-   void setInits(ArrayRef<Expr *> VL); 
-   
-   /// Gets the list of references to initializer variables for new 
-   /// private variables. 
-   MutableArrayRef<Expr *> getInits() { 
-     return MutableArrayRef<Expr *>(getPrivateCopies().end(), varlist_size()); 
-   } 
-   ArrayRef<const Expr *> getInits() const { 
-     return llvm::ArrayRef(getPrivateCopies().end(), varlist_size()); 
-   } 
-   
- public: 
-   /// Creates clause with a list of variables \a VL. 
-   /// 
-   /// \param C AST context. 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param LParenLoc Location of '('. 
-   /// \param EndLoc Ending location of the clause. 
-   /// \param VL List of references to the original variables. 
-   /// \param PrivateVL List of references to private copies with initializers. 
-   /// \param InitVL List of references to auto generated variables used for 
-   /// initialization of a single array element. Used if firstprivate variable is 
-   /// of array type. 
-   /// \param PreInit Statement that must be executed before entering the OpenMP 
-   /// region with this clause. 
-   static OMPFirstprivateClause * 
-   Create(const ASTContext &C, SourceLocation StartLoc, SourceLocation LParenLoc, 
-          SourceLocation EndLoc, ArrayRef<Expr *> VL, ArrayRef<Expr *> PrivateVL, 
-          ArrayRef<Expr *> InitVL, Stmt *PreInit); 
-   
-   /// Creates an empty clause with the place for \a N variables. 
-   /// 
-   /// \param C AST context. 
-   /// \param N The number of variables. 
-   static OMPFirstprivateClause *CreateEmpty(const ASTContext &C, unsigned N); 
-   
-   using private_copies_iterator = MutableArrayRef<Expr *>::iterator; 
-   using private_copies_const_iterator = ArrayRef<const Expr *>::iterator; 
-   using private_copies_range = llvm::iterator_range<private_copies_iterator>; 
-   using private_copies_const_range = 
-       llvm::iterator_range<private_copies_const_iterator>; 
-   
-   private_copies_range private_copies() { 
-     return private_copies_range(getPrivateCopies().begin(), 
-                                 getPrivateCopies().end()); 
-   } 
-   private_copies_const_range private_copies() const { 
-     return private_copies_const_range(getPrivateCopies().begin(), 
-                                       getPrivateCopies().end()); 
-   } 
-   
-   using inits_iterator = MutableArrayRef<Expr *>::iterator; 
-   using inits_const_iterator = ArrayRef<const Expr *>::iterator; 
-   using inits_range = llvm::iterator_range<inits_iterator>; 
-   using inits_const_range = llvm::iterator_range<inits_const_iterator>; 
-   
-   inits_range inits() { 
-     return inits_range(getInits().begin(), getInits().end()); 
-   } 
-   inits_const_range inits() const { 
-     return inits_const_range(getInits().begin(), getInits().end()); 
-   } 
-   
-   child_range children() { 
-     return child_range(reinterpret_cast<Stmt **>(varlist_begin()), 
-                        reinterpret_cast<Stmt **>(varlist_end())); 
-   } 
-   
-   const_child_range children() const { 
-     auto Children = const_cast<OMPFirstprivateClause *>(this)->children(); 
-     return const_child_range(Children.begin(), Children.end()); 
-   } 
-   
-   child_range used_children() { 
-     return child_range(reinterpret_cast<Stmt **>(varlist_begin()), 
-                        reinterpret_cast<Stmt **>(varlist_end())); 
-   } 
-   const_child_range used_children() const { 
-     auto Children = const_cast<OMPFirstprivateClause *>(this)->used_children(); 
-     return const_child_range(Children.begin(), Children.end()); 
-   } 
-   
-   static bool classof(const OMPClause *T) { 
-     return T->getClauseKind() == llvm::omp::OMPC_firstprivate; 
-   } 
- }; 
-   
- /// This represents clause 'lastprivate' in the '#pragma omp ...' 
- /// directives. 
- /// 
- /// \code 
- /// #pragma omp simd lastprivate(a,b) 
- /// \endcode 
- /// In this example directive '#pragma omp simd' has clause 'lastprivate' 
- /// with the variables 'a' and 'b'. 
- class OMPLastprivateClause final 
-     : public OMPVarListClause<OMPLastprivateClause>, 
-       public OMPClauseWithPostUpdate, 
-       private llvm::TrailingObjects<OMPLastprivateClause, Expr *> { 
-   // There are 4 additional tail-allocated arrays at the end of the class: 
-   // 1. Contains list of pseudo variables with the default initialization for 
-   // each non-firstprivate variables. Used in codegen for initialization of 
-   // lastprivate copies. 
-   // 2. List of helper expressions for proper generation of assignment operation 
-   // required for lastprivate clause. This list represents private variables 
-   // (for arrays, single array element). 
-   // 3. List of helper expressions for proper generation of assignment operation 
-   // required for lastprivate clause. This list represents original variables 
-   // (for arrays, single array element). 
-   // 4. List of helper expressions that represents assignment operation: 
-   // \code 
-   // DstExprs = SrcExprs; 
-   // \endcode 
-   // Required for proper codegen of final assignment performed by the 
-   // lastprivate clause. 
-   friend class OMPClauseReader; 
-   friend OMPVarListClause; 
-   friend TrailingObjects; 
-   
-   /// Optional lastprivate kind, e.g. 'conditional', if specified by user. 
-   OpenMPLastprivateModifier LPKind; 
-   /// Optional location of the lasptrivate kind, if specified by user. 
-   SourceLocation LPKindLoc; 
-   /// Optional colon location, if specified by user. 
-   SourceLocation ColonLoc; 
-   
-   /// Build clause with number of variables \a N. 
-   /// 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param LParenLoc Location of '('. 
-   /// \param EndLoc Ending location of the clause. 
-   /// \param N Number of the variables in the clause. 
-   OMPLastprivateClause(SourceLocation StartLoc, SourceLocation LParenLoc, 
-                        SourceLocation EndLoc, OpenMPLastprivateModifier LPKind, 
-                        SourceLocation LPKindLoc, SourceLocation ColonLoc, 
-                        unsigned N) 
-       : OMPVarListClause<OMPLastprivateClause>(llvm::omp::OMPC_lastprivate, 
-                                                StartLoc, LParenLoc, EndLoc, N), 
-         OMPClauseWithPostUpdate(this), LPKind(LPKind), LPKindLoc(LPKindLoc), 
-         ColonLoc(ColonLoc) {} 
-   
-   /// Build an empty clause. 
-   /// 
-   /// \param N Number of variables. 
-   explicit OMPLastprivateClause(unsigned N) 
-       : OMPVarListClause<OMPLastprivateClause>( 
-             llvm::omp::OMPC_lastprivate, SourceLocation(), SourceLocation(), 
-             SourceLocation(), N), 
-         OMPClauseWithPostUpdate(this) {} 
-   
-   /// Get the list of helper expressions for initialization of private 
-   /// copies for lastprivate variables. 
-   MutableArrayRef<Expr *> getPrivateCopies() { 
-     return MutableArrayRef<Expr *>(varlist_end(), varlist_size()); 
-   } 
-   ArrayRef<const Expr *> getPrivateCopies() const { 
-     return llvm::ArrayRef(varlist_end(), varlist_size()); 
-   } 
-   
-   /// Set list of helper expressions, required for proper codegen of the 
-   /// clause. These expressions represent private variables (for arrays, single 
-   /// array element) in the final assignment statement performed by the 
-   /// lastprivate clause. 
-   void setSourceExprs(ArrayRef<Expr *> SrcExprs); 
-   
-   /// Get the list of helper source expressions. 
-   MutableArrayRef<Expr *> getSourceExprs() { 
-     return MutableArrayRef<Expr *>(getPrivateCopies().end(), varlist_size()); 
-   } 
-   ArrayRef<const Expr *> getSourceExprs() const { 
-     return llvm::ArrayRef(getPrivateCopies().end(), varlist_size()); 
-   } 
-   
-   /// Set list of helper expressions, required for proper codegen of the 
-   /// clause. These expressions represent original variables (for arrays, single 
-   /// array element) in the final assignment statement performed by the 
-   /// lastprivate clause. 
-   void setDestinationExprs(ArrayRef<Expr *> DstExprs); 
-   
-   /// Get the list of helper destination expressions. 
-   MutableArrayRef<Expr *> getDestinationExprs() { 
-     return MutableArrayRef<Expr *>(getSourceExprs().end(), varlist_size()); 
-   } 
-   ArrayRef<const Expr *> getDestinationExprs() const { 
-     return llvm::ArrayRef(getSourceExprs().end(), varlist_size()); 
-   } 
-   
-   /// Set list of helper assignment expressions, required for proper 
-   /// codegen of the clause. These expressions are assignment expressions that 
-   /// assign private copy of the variable to original variable. 
-   void setAssignmentOps(ArrayRef<Expr *> AssignmentOps); 
-   
-   /// Get the list of helper assignment expressions. 
-   MutableArrayRef<Expr *> getAssignmentOps() { 
-     return MutableArrayRef<Expr *>(getDestinationExprs().end(), varlist_size()); 
-   } 
-   ArrayRef<const Expr *> getAssignmentOps() const { 
-     return llvm::ArrayRef(getDestinationExprs().end(), varlist_size()); 
-   } 
-   
-   /// Sets lastprivate kind. 
-   void setKind(OpenMPLastprivateModifier Kind) { LPKind = Kind; } 
-   /// Sets location of the lastprivate kind. 
-   void setKindLoc(SourceLocation Loc) { LPKindLoc = Loc; } 
-   /// Sets colon symbol location. 
-   void setColonLoc(SourceLocation Loc) { ColonLoc = Loc; } 
-   
- public: 
-   /// Creates clause with a list of variables \a VL. 
-   /// 
-   /// \param C AST context. 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param LParenLoc Location of '('. 
-   /// \param EndLoc Ending location of the clause. 
-   /// \param VL List of references to the variables. 
-   /// \param SrcExprs List of helper expressions for proper generation of 
-   /// assignment operation required for lastprivate clause. This list represents 
-   /// private variables (for arrays, single array element). 
-   /// \param DstExprs List of helper expressions for proper generation of 
-   /// assignment operation required for lastprivate clause. This list represents 
-   /// original variables (for arrays, single array element). 
-   /// \param AssignmentOps List of helper expressions that represents assignment 
-   /// operation: 
-   /// \code 
-   /// DstExprs = SrcExprs; 
-   /// \endcode 
-   /// Required for proper codegen of final assignment performed by the 
-   /// lastprivate clause. 
-   /// \param LPKind Lastprivate kind, e.g. 'conditional'. 
-   /// \param LPKindLoc Location of the lastprivate kind. 
-   /// \param ColonLoc Location of the ':' symbol if lastprivate kind is used. 
-   /// \param PreInit Statement that must be executed before entering the OpenMP 
-   /// region with this clause. 
-   /// \param PostUpdate Expression that must be executed after exit from the 
-   /// OpenMP region with this clause. 
-   static OMPLastprivateClause * 
-   Create(const ASTContext &C, SourceLocation StartLoc, SourceLocation LParenLoc, 
-          SourceLocation EndLoc, ArrayRef<Expr *> VL, ArrayRef<Expr *> SrcExprs, 
-          ArrayRef<Expr *> DstExprs, ArrayRef<Expr *> AssignmentOps, 
-          OpenMPLastprivateModifier LPKind, SourceLocation LPKindLoc, 
-          SourceLocation ColonLoc, Stmt *PreInit, Expr *PostUpdate); 
-   
-   /// Creates an empty clause with the place for \a N variables. 
-   /// 
-   /// \param C AST context. 
-   /// \param N The number of variables. 
-   static OMPLastprivateClause *CreateEmpty(const ASTContext &C, unsigned N); 
-   
-   /// Lastprivate kind. 
-   OpenMPLastprivateModifier getKind() const { return LPKind; } 
-   /// Returns the location of the lastprivate kind. 
-   SourceLocation getKindLoc() const { return LPKindLoc; } 
-   /// Returns the location of the ':' symbol, if any. 
-   SourceLocation getColonLoc() const { return ColonLoc; } 
-   
-   using helper_expr_iterator = MutableArrayRef<Expr *>::iterator; 
-   using helper_expr_const_iterator = ArrayRef<const Expr *>::iterator; 
-   using helper_expr_range = llvm::iterator_range<helper_expr_iterator>; 
-   using helper_expr_const_range = 
-       llvm::iterator_range<helper_expr_const_iterator>; 
-   
-   /// Set list of helper expressions, required for generation of private 
-   /// copies of original lastprivate variables. 
-   void setPrivateCopies(ArrayRef<Expr *> PrivateCopies); 
-   
-   helper_expr_const_range private_copies() const { 
-     return helper_expr_const_range(getPrivateCopies().begin(), 
-                                    getPrivateCopies().end()); 
-   } 
-   
-   helper_expr_range private_copies() { 
-     return helper_expr_range(getPrivateCopies().begin(), 
-                              getPrivateCopies().end()); 
-   } 
-   
-   helper_expr_const_range source_exprs() const { 
-     return helper_expr_const_range(getSourceExprs().begin(), 
-                                    getSourceExprs().end()); 
-   } 
-   
-   helper_expr_range source_exprs() { 
-     return helper_expr_range(getSourceExprs().begin(), getSourceExprs().end()); 
-   } 
-   
-   helper_expr_const_range destination_exprs() const { 
-     return helper_expr_const_range(getDestinationExprs().begin(), 
-                                    getDestinationExprs().end()); 
-   } 
-   
-   helper_expr_range destination_exprs() { 
-     return helper_expr_range(getDestinationExprs().begin(), 
-                              getDestinationExprs().end()); 
-   } 
-   
-   helper_expr_const_range assignment_ops() const { 
-     return helper_expr_const_range(getAssignmentOps().begin(), 
-                                    getAssignmentOps().end()); 
-   } 
-   
-   helper_expr_range assignment_ops() { 
-     return helper_expr_range(getAssignmentOps().begin(), 
-                              getAssignmentOps().end()); 
-   } 
-   
-   child_range children() { 
-     return child_range(reinterpret_cast<Stmt **>(varlist_begin()), 
-                        reinterpret_cast<Stmt **>(varlist_end())); 
-   } 
-   
-   const_child_range children() const { 
-     auto Children = const_cast<OMPLastprivateClause *>(this)->children(); 
-     return const_child_range(Children.begin(), Children.end()); 
-   } 
-   
-   child_range used_children() { 
-     return child_range(child_iterator(), child_iterator()); 
-   } 
-   const_child_range used_children() const { 
-     return const_child_range(const_child_iterator(), const_child_iterator()); 
-   } 
-   
-   static bool classof(const OMPClause *T) { 
-     return T->getClauseKind() == llvm::omp::OMPC_lastprivate; 
-   } 
- }; 
-   
- /// This represents clause 'shared' in the '#pragma omp ...' directives. 
- /// 
- /// \code 
- /// #pragma omp parallel shared(a,b) 
- /// \endcode 
- /// In this example directive '#pragma omp parallel' has clause 'shared' 
- /// with the variables 'a' and 'b'. 
- class OMPSharedClause final 
-     : public OMPVarListClause<OMPSharedClause>, 
-       private llvm::TrailingObjects<OMPSharedClause, Expr *> { 
-   friend OMPVarListClause; 
-   friend TrailingObjects; 
-   
-   /// Build clause with number of variables \a N. 
-   /// 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param LParenLoc Location of '('. 
-   /// \param EndLoc Ending location of the clause. 
-   /// \param N Number of the variables in the clause. 
-   OMPSharedClause(SourceLocation StartLoc, SourceLocation LParenLoc, 
-                   SourceLocation EndLoc, unsigned N) 
-       : OMPVarListClause<OMPSharedClause>(llvm::omp::OMPC_shared, StartLoc, 
-                                           LParenLoc, EndLoc, N) {} 
-   
-   /// Build an empty clause. 
-   /// 
-   /// \param N Number of variables. 
-   explicit OMPSharedClause(unsigned N) 
-       : OMPVarListClause<OMPSharedClause>(llvm::omp::OMPC_shared, 
-                                           SourceLocation(), SourceLocation(), 
-                                           SourceLocation(), N) {} 
-   
- public: 
-   /// Creates clause with a list of variables \a VL. 
-   /// 
-   /// \param C AST context. 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param LParenLoc Location of '('. 
-   /// \param EndLoc Ending location of the clause. 
-   /// \param VL List of references to the variables. 
-   static OMPSharedClause *Create(const ASTContext &C, SourceLocation StartLoc, 
-                                  SourceLocation LParenLoc, 
-                                  SourceLocation EndLoc, ArrayRef<Expr *> VL); 
-   
-   /// Creates an empty clause with \a N variables. 
-   /// 
-   /// \param C AST context. 
-   /// \param N The number of variables. 
-   static OMPSharedClause *CreateEmpty(const ASTContext &C, unsigned N); 
-   
-   child_range children() { 
-     return child_range(reinterpret_cast<Stmt **>(varlist_begin()), 
-                        reinterpret_cast<Stmt **>(varlist_end())); 
-   } 
-   
-   const_child_range children() const { 
-     auto Children = const_cast<OMPSharedClause *>(this)->children(); 
-     return const_child_range(Children.begin(), Children.end()); 
-   } 
-   
-   child_range used_children() { 
-     return child_range(child_iterator(), child_iterator()); 
-   } 
-   const_child_range used_children() const { 
-     return const_child_range(const_child_iterator(), const_child_iterator()); 
-   } 
-   
-   static bool classof(const OMPClause *T) { 
-     return T->getClauseKind() == llvm::omp::OMPC_shared; 
-   } 
- }; 
-   
- /// This represents clause 'reduction' in the '#pragma omp ...' 
- /// directives. 
- /// 
- /// \code 
- /// #pragma omp parallel reduction(+:a,b) 
- /// \endcode 
- /// In this example directive '#pragma omp parallel' has clause 'reduction' 
- /// with operator '+' and the variables 'a' and 'b'. 
- class OMPReductionClause final 
-     : public OMPVarListClause<OMPReductionClause>, 
-       public OMPClauseWithPostUpdate, 
-       private llvm::TrailingObjects<OMPReductionClause, Expr *> { 
-   friend class OMPClauseReader; 
-   friend OMPVarListClause; 
-   friend TrailingObjects; 
-   
-   /// Reduction modifier. 
-   OpenMPReductionClauseModifier Modifier = OMPC_REDUCTION_unknown; 
-   
-   /// Reduction modifier location. 
-   SourceLocation ModifierLoc; 
-   
-   /// Location of ':'. 
-   SourceLocation ColonLoc; 
-   
-   /// Nested name specifier for C++. 
-   NestedNameSpecifierLoc QualifierLoc; 
-   
-   /// Name of custom operator. 
-   DeclarationNameInfo NameInfo; 
-   
-   /// Build clause with number of variables \a N. 
-   /// 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param LParenLoc Location of '('. 
-   /// \param ModifierLoc Modifier location. 
-   /// \param ColonLoc Location of ':'. 
-   /// \param EndLoc Ending location of the clause. 
-   /// \param N Number of the variables in the clause. 
-   /// \param QualifierLoc The nested-name qualifier with location information 
-   /// \param NameInfo The full name info for reduction identifier. 
-   OMPReductionClause(SourceLocation StartLoc, SourceLocation LParenLoc, 
-                      SourceLocation ModifierLoc, SourceLocation ColonLoc, 
-                      SourceLocation EndLoc, 
-                      OpenMPReductionClauseModifier Modifier, unsigned N, 
-                      NestedNameSpecifierLoc QualifierLoc, 
-                      const DeclarationNameInfo &NameInfo) 
-       : OMPVarListClause<OMPReductionClause>(llvm::omp::OMPC_reduction, 
-                                              StartLoc, LParenLoc, EndLoc, N), 
-         OMPClauseWithPostUpdate(this), Modifier(Modifier), 
-         ModifierLoc(ModifierLoc), ColonLoc(ColonLoc), 
-         QualifierLoc(QualifierLoc), NameInfo(NameInfo) {} 
-   
-   /// Build an empty clause. 
-   /// 
-   /// \param N Number of variables. 
-   explicit OMPReductionClause(unsigned N) 
-       : OMPVarListClause<OMPReductionClause>(llvm::omp::OMPC_reduction, 
-                                              SourceLocation(), SourceLocation(), 
-                                              SourceLocation(), N), 
-         OMPClauseWithPostUpdate(this) {} 
-   
-   /// Sets reduction modifier. 
-   void setModifier(OpenMPReductionClauseModifier M) { Modifier = M; } 
-   
-   /// Sets location of the modifier. 
-   void setModifierLoc(SourceLocation Loc) { ModifierLoc = Loc; } 
-   
-   /// Sets location of ':' symbol in clause. 
-   void setColonLoc(SourceLocation CL) { ColonLoc = CL; } 
-   
-   /// Sets the name info for specified reduction identifier. 
-   void setNameInfo(DeclarationNameInfo DNI) { NameInfo = DNI; } 
-   
-   /// Sets the nested name specifier. 
-   void setQualifierLoc(NestedNameSpecifierLoc NSL) { QualifierLoc = NSL; } 
-   
-   /// Set list of helper expressions, required for proper codegen of the 
-   /// clause. These expressions represent private copy of the reduction 
-   /// variable. 
-   void setPrivates(ArrayRef<Expr *> Privates); 
-   
-   /// Get the list of helper privates. 
-   MutableArrayRef<Expr *> getPrivates() { 
-     return MutableArrayRef<Expr *>(varlist_end(), varlist_size()); 
-   } 
-   ArrayRef<const Expr *> getPrivates() const { 
-     return llvm::ArrayRef(varlist_end(), varlist_size()); 
-   } 
-   
-   /// Set list of helper expressions, required for proper codegen of the 
-   /// clause. These expressions represent LHS expression in the final 
-   /// reduction expression performed by the reduction clause. 
-   void setLHSExprs(ArrayRef<Expr *> LHSExprs); 
-   
-   /// Get the list of helper LHS expressions. 
-   MutableArrayRef<Expr *> getLHSExprs() { 
-     return MutableArrayRef<Expr *>(getPrivates().end(), varlist_size()); 
-   } 
-   ArrayRef<const Expr *> getLHSExprs() const { 
-     return llvm::ArrayRef(getPrivates().end(), varlist_size()); 
-   } 
-   
-   /// Set list of helper expressions, required for proper codegen of the 
-   /// clause. These expressions represent RHS expression in the final 
-   /// reduction expression performed by the reduction clause. 
-   /// Also, variables in these expressions are used for proper initialization of 
-   /// reduction copies. 
-   void setRHSExprs(ArrayRef<Expr *> RHSExprs); 
-   
-   /// Get the list of helper destination expressions. 
-   MutableArrayRef<Expr *> getRHSExprs() { 
-     return MutableArrayRef<Expr *>(getLHSExprs().end(), varlist_size()); 
-   } 
-   ArrayRef<const Expr *> getRHSExprs() const { 
-     return llvm::ArrayRef(getLHSExprs().end(), varlist_size()); 
-   } 
-   
-   /// Set list of helper reduction expressions, required for proper 
-   /// codegen of the clause. These expressions are binary expressions or 
-   /// operator/custom reduction call that calculates new value from source 
-   /// helper expressions to destination helper expressions. 
-   void setReductionOps(ArrayRef<Expr *> ReductionOps); 
-   
-   /// Get the list of helper reduction expressions. 
-   MutableArrayRef<Expr *> getReductionOps() { 
-     return MutableArrayRef<Expr *>(getRHSExprs().end(), varlist_size()); 
-   } 
-   ArrayRef<const Expr *> getReductionOps() const { 
-     return llvm::ArrayRef(getRHSExprs().end(), varlist_size()); 
-   } 
-   
-   /// Set list of helper copy operations for inscan reductions. 
-   /// The form is: Temps[i] = LHS[i]; 
-   void setInscanCopyOps(ArrayRef<Expr *> Ops); 
-   
-   /// Get the list of helper inscan copy operations. 
-   MutableArrayRef<Expr *> getInscanCopyOps() { 
-     return MutableArrayRef<Expr *>(getReductionOps().end(), varlist_size()); 
-   } 
-   ArrayRef<const Expr *> getInscanCopyOps() const { 
-     return llvm::ArrayRef(getReductionOps().end(), varlist_size()); 
-   } 
-   
-   /// Set list of helper temp vars for inscan copy array operations. 
-   void setInscanCopyArrayTemps(ArrayRef<Expr *> CopyArrayTemps); 
-   
-   /// Get the list of helper inscan copy temps. 
-   MutableArrayRef<Expr *> getInscanCopyArrayTemps() { 
-     return MutableArrayRef<Expr *>(getInscanCopyOps().end(), varlist_size()); 
-   } 
-   ArrayRef<const Expr *> getInscanCopyArrayTemps() const { 
-     return llvm::ArrayRef(getInscanCopyOps().end(), varlist_size()); 
-   } 
-   
-   /// Set list of helper temp elements vars for inscan copy array operations. 
-   void setInscanCopyArrayElems(ArrayRef<Expr *> CopyArrayElems); 
-   
-   /// Get the list of helper inscan copy temps. 
-   MutableArrayRef<Expr *> getInscanCopyArrayElems() { 
-     return MutableArrayRef<Expr *>(getInscanCopyArrayTemps().end(), 
-                                    varlist_size()); 
-   } 
-   ArrayRef<const Expr *> getInscanCopyArrayElems() const { 
-     return llvm::ArrayRef(getInscanCopyArrayTemps().end(), varlist_size()); 
-   } 
-   
- public: 
-   /// Creates clause with a list of variables \a VL. 
-   /// 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param LParenLoc Location of '('. 
-   /// \param ModifierLoc Modifier location. 
-   /// \param ColonLoc Location of ':'. 
-   /// \param EndLoc Ending location of the clause. 
-   /// \param VL The variables in the clause. 
-   /// \param QualifierLoc The nested-name qualifier with location information 
-   /// \param NameInfo The full name info for reduction identifier. 
-   /// \param Privates List of helper expressions for proper generation of 
-   /// private copies. 
-   /// \param LHSExprs List of helper expressions for proper generation of 
-   /// assignment operation required for copyprivate clause. This list represents 
-   /// LHSs of the reduction expressions. 
-   /// \param RHSExprs List of helper expressions for proper generation of 
-   /// assignment operation required for copyprivate clause. This list represents 
-   /// RHSs of the reduction expressions. 
-   /// Also, variables in these expressions are used for proper initialization of 
-   /// reduction copies. 
-   /// \param ReductionOps List of helper expressions that represents reduction 
-   /// expressions: 
-   /// \code 
-   /// LHSExprs binop RHSExprs; 
-   /// operator binop(LHSExpr, RHSExpr); 
-   /// <CutomReduction>(LHSExpr, RHSExpr); 
-   /// \endcode 
-   /// Required for proper codegen of final reduction operation performed by the 
-   /// reduction clause. 
-   /// \param CopyOps List of copy operations for inscan reductions: 
-   /// \code 
-   /// TempExprs = LHSExprs; 
-   /// \endcode 
-   /// \param CopyArrayTemps Temp arrays for prefix sums. 
-   /// \param CopyArrayElems Temp arrays for prefix sums. 
-   /// \param PreInit Statement that must be executed before entering the OpenMP 
-   /// region with this clause. 
-   /// \param PostUpdate Expression that must be executed after exit from the 
-   /// OpenMP region with this clause. 
-   static OMPReductionClause * 
-   Create(const ASTContext &C, SourceLocation StartLoc, SourceLocation LParenLoc, 
-          SourceLocation ModifierLoc, SourceLocation ColonLoc, 
-          SourceLocation EndLoc, OpenMPReductionClauseModifier Modifier, 
-          ArrayRef<Expr *> VL, NestedNameSpecifierLoc QualifierLoc, 
-          const DeclarationNameInfo &NameInfo, ArrayRef<Expr *> Privates, 
-          ArrayRef<Expr *> LHSExprs, ArrayRef<Expr *> RHSExprs, 
-          ArrayRef<Expr *> ReductionOps, ArrayRef<Expr *> CopyOps, 
-          ArrayRef<Expr *> CopyArrayTemps, ArrayRef<Expr *> CopyArrayElems, 
-          Stmt *PreInit, Expr *PostUpdate); 
-   
-   /// Creates an empty clause with the place for \a N variables. 
-   /// 
-   /// \param C AST context. 
-   /// \param N The number of variables. 
-   /// \param Modifier Reduction modifier. 
-   static OMPReductionClause * 
-   CreateEmpty(const ASTContext &C, unsigned N, 
-               OpenMPReductionClauseModifier Modifier); 
-   
-   /// Returns modifier. 
-   OpenMPReductionClauseModifier getModifier() const { return Modifier; } 
-   
-   /// Returns modifier location. 
-   SourceLocation getModifierLoc() const { return ModifierLoc; } 
-   
-   /// Gets location of ':' symbol in clause. 
-   SourceLocation getColonLoc() const { return ColonLoc; } 
-   
-   /// Gets the name info for specified reduction identifier. 
-   const DeclarationNameInfo &getNameInfo() const { return NameInfo; } 
-   
-   /// Gets the nested name specifier. 
-   NestedNameSpecifierLoc getQualifierLoc() const { return QualifierLoc; } 
-   
-   using helper_expr_iterator = MutableArrayRef<Expr *>::iterator; 
-   using helper_expr_const_iterator = ArrayRef<const Expr *>::iterator; 
-   using helper_expr_range = llvm::iterator_range<helper_expr_iterator>; 
-   using helper_expr_const_range = 
-       llvm::iterator_range<helper_expr_const_iterator>; 
-   
-   helper_expr_const_range privates() const { 
-     return helper_expr_const_range(getPrivates().begin(), getPrivates().end()); 
-   } 
-   
-   helper_expr_range privates() { 
-     return helper_expr_range(getPrivates().begin(), getPrivates().end()); 
-   } 
-   
-   helper_expr_const_range lhs_exprs() const { 
-     return helper_expr_const_range(getLHSExprs().begin(), getLHSExprs().end()); 
-   } 
-   
-   helper_expr_range lhs_exprs() { 
-     return helper_expr_range(getLHSExprs().begin(), getLHSExprs().end()); 
-   } 
-   
-   helper_expr_const_range rhs_exprs() const { 
-     return helper_expr_const_range(getRHSExprs().begin(), getRHSExprs().end()); 
-   } 
-   
-   helper_expr_range rhs_exprs() { 
-     return helper_expr_range(getRHSExprs().begin(), getRHSExprs().end()); 
-   } 
-   
-   helper_expr_const_range reduction_ops() const { 
-     return helper_expr_const_range(getReductionOps().begin(), 
-                                    getReductionOps().end()); 
-   } 
-   
-   helper_expr_range reduction_ops() { 
-     return helper_expr_range(getReductionOps().begin(), 
-                              getReductionOps().end()); 
-   } 
-   
-   helper_expr_const_range copy_ops() const { 
-     return helper_expr_const_range(getInscanCopyOps().begin(), 
-                                    getInscanCopyOps().end()); 
-   } 
-   
-   helper_expr_range copy_ops() { 
-     return helper_expr_range(getInscanCopyOps().begin(), 
-                              getInscanCopyOps().end()); 
-   } 
-   
-   helper_expr_const_range copy_array_temps() const { 
-     return helper_expr_const_range(getInscanCopyArrayTemps().begin(), 
-                                    getInscanCopyArrayTemps().end()); 
-   } 
-   
-   helper_expr_range copy_array_temps() { 
-     return helper_expr_range(getInscanCopyArrayTemps().begin(), 
-                              getInscanCopyArrayTemps().end()); 
-   } 
-   
-   helper_expr_const_range copy_array_elems() const { 
-     return helper_expr_const_range(getInscanCopyArrayElems().begin(), 
-                                    getInscanCopyArrayElems().end()); 
-   } 
-   
-   helper_expr_range copy_array_elems() { 
-     return helper_expr_range(getInscanCopyArrayElems().begin(), 
-                              getInscanCopyArrayElems().end()); 
-   } 
-   
-   child_range children() { 
-     return child_range(reinterpret_cast<Stmt **>(varlist_begin()), 
-                        reinterpret_cast<Stmt **>(varlist_end())); 
-   } 
-   
-   const_child_range children() const { 
-     auto Children = const_cast<OMPReductionClause *>(this)->children(); 
-     return const_child_range(Children.begin(), Children.end()); 
-   } 
-   
-   child_range used_children() { 
-     return child_range(reinterpret_cast<Stmt **>(varlist_begin()), 
-                        reinterpret_cast<Stmt **>(varlist_end())); 
-   } 
-   const_child_range used_children() const { 
-     auto Children = const_cast<OMPReductionClause *>(this)->used_children(); 
-     return const_child_range(Children.begin(), Children.end()); 
-   } 
-   
-   static bool classof(const OMPClause *T) { 
-     return T->getClauseKind() == llvm::omp::OMPC_reduction; 
-   } 
- }; 
-   
- /// This represents clause 'task_reduction' in the '#pragma omp taskgroup' 
- /// directives. 
- /// 
- /// \code 
- /// #pragma omp taskgroup task_reduction(+:a,b) 
- /// \endcode 
- /// In this example directive '#pragma omp taskgroup' has clause 
- /// 'task_reduction' with operator '+' and the variables 'a' and 'b'. 
- class OMPTaskReductionClause final 
-     : public OMPVarListClause<OMPTaskReductionClause>, 
-       public OMPClauseWithPostUpdate, 
-       private llvm::TrailingObjects<OMPTaskReductionClause, Expr *> { 
-   friend class OMPClauseReader; 
-   friend OMPVarListClause; 
-   friend TrailingObjects; 
-   
-   /// Location of ':'. 
-   SourceLocation ColonLoc; 
-   
-   /// Nested name specifier for C++. 
-   NestedNameSpecifierLoc QualifierLoc; 
-   
-   /// Name of custom operator. 
-   DeclarationNameInfo NameInfo; 
-   
-   /// Build clause with number of variables \a N. 
-   /// 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param LParenLoc Location of '('. 
-   /// \param EndLoc Ending location of the clause. 
-   /// \param ColonLoc Location of ':'. 
-   /// \param N Number of the variables in the clause. 
-   /// \param QualifierLoc The nested-name qualifier with location information 
-   /// \param NameInfo The full name info for reduction identifier. 
-   OMPTaskReductionClause(SourceLocation StartLoc, SourceLocation LParenLoc, 
-                          SourceLocation ColonLoc, SourceLocation EndLoc, 
-                          unsigned N, NestedNameSpecifierLoc QualifierLoc, 
-                          const DeclarationNameInfo &NameInfo) 
-       : OMPVarListClause<OMPTaskReductionClause>( 
-             llvm::omp::OMPC_task_reduction, StartLoc, LParenLoc, EndLoc, N), 
-         OMPClauseWithPostUpdate(this), ColonLoc(ColonLoc), 
-         QualifierLoc(QualifierLoc), NameInfo(NameInfo) {} 
-   
-   /// Build an empty clause. 
-   /// 
-   /// \param N Number of variables. 
-   explicit OMPTaskReductionClause(unsigned N) 
-       : OMPVarListClause<OMPTaskReductionClause>( 
-             llvm::omp::OMPC_task_reduction, SourceLocation(), SourceLocation(), 
-             SourceLocation(), N), 
-         OMPClauseWithPostUpdate(this) {} 
-   
-   /// Sets location of ':' symbol in clause. 
-   void setColonLoc(SourceLocation CL) { ColonLoc = CL; } 
-   
-   /// Sets the name info for specified reduction identifier. 
-   void setNameInfo(DeclarationNameInfo DNI) { NameInfo = DNI; } 
-   
-   /// Sets the nested name specifier. 
-   void setQualifierLoc(NestedNameSpecifierLoc NSL) { QualifierLoc = NSL; } 
-   
-   /// Set list of helper expressions, required for proper codegen of the clause. 
-   /// These expressions represent private copy of the reduction variable. 
-   void setPrivates(ArrayRef<Expr *> Privates); 
-   
-   /// Get the list of helper privates. 
-   MutableArrayRef<Expr *> getPrivates() { 
-     return MutableArrayRef<Expr *>(varlist_end(), varlist_size()); 
-   } 
-   ArrayRef<const Expr *> getPrivates() const { 
-     return llvm::ArrayRef(varlist_end(), varlist_size()); 
-   } 
-   
-   /// Set list of helper expressions, required for proper codegen of the clause. 
-   /// These expressions represent LHS expression in the final reduction 
-   /// expression performed by the reduction clause. 
-   void setLHSExprs(ArrayRef<Expr *> LHSExprs); 
-   
-   /// Get the list of helper LHS expressions. 
-   MutableArrayRef<Expr *> getLHSExprs() { 
-     return MutableArrayRef<Expr *>(getPrivates().end(), varlist_size()); 
-   } 
-   ArrayRef<const Expr *> getLHSExprs() const { 
-     return llvm::ArrayRef(getPrivates().end(), varlist_size()); 
-   } 
-   
-   /// Set list of helper expressions, required for proper codegen of the clause. 
-   /// These expressions represent RHS expression in the final reduction 
-   /// expression performed by the reduction clause. Also, variables in these 
-   /// expressions are used for proper initialization of reduction copies. 
-   void setRHSExprs(ArrayRef<Expr *> RHSExprs); 
-   
-   ///  Get the list of helper destination expressions. 
-   MutableArrayRef<Expr *> getRHSExprs() { 
-     return MutableArrayRef<Expr *>(getLHSExprs().end(), varlist_size()); 
-   } 
-   ArrayRef<const Expr *> getRHSExprs() const { 
-     return llvm::ArrayRef(getLHSExprs().end(), varlist_size()); 
-   } 
-   
-   /// Set list of helper reduction expressions, required for proper 
-   /// codegen of the clause. These expressions are binary expressions or 
-   /// operator/custom reduction call that calculates new value from source 
-   /// helper expressions to destination helper expressions. 
-   void setReductionOps(ArrayRef<Expr *> ReductionOps); 
-   
-   ///  Get the list of helper reduction expressions. 
-   MutableArrayRef<Expr *> getReductionOps() { 
-     return MutableArrayRef<Expr *>(getRHSExprs().end(), varlist_size()); 
-   } 
-   ArrayRef<const Expr *> getReductionOps() const { 
-     return llvm::ArrayRef(getRHSExprs().end(), varlist_size()); 
-   } 
-   
- public: 
-   /// Creates clause with a list of variables \a VL. 
-   /// 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param LParenLoc Location of '('. 
-   /// \param ColonLoc Location of ':'. 
-   /// \param EndLoc Ending location of the clause. 
-   /// \param VL The variables in the clause. 
-   /// \param QualifierLoc The nested-name qualifier with location information 
-   /// \param NameInfo The full name info for reduction identifier. 
-   /// \param Privates List of helper expressions for proper generation of 
-   /// private copies. 
-   /// \param LHSExprs List of helper expressions for proper generation of 
-   /// assignment operation required for copyprivate clause. This list represents 
-   /// LHSs of the reduction expressions. 
-   /// \param RHSExprs List of helper expressions for proper generation of 
-   /// assignment operation required for copyprivate clause. This list represents 
-   /// RHSs of the reduction expressions. 
-   /// Also, variables in these expressions are used for proper initialization of 
-   /// reduction copies. 
-   /// \param ReductionOps List of helper expressions that represents reduction 
-   /// expressions: 
-   /// \code 
-   /// LHSExprs binop RHSExprs; 
-   /// operator binop(LHSExpr, RHSExpr); 
-   /// <CutomReduction>(LHSExpr, RHSExpr); 
-   /// \endcode 
-   /// Required for proper codegen of final reduction operation performed by the 
-   /// reduction clause. 
-   /// \param PreInit Statement that must be executed before entering the OpenMP 
-   /// region with this clause. 
-   /// \param PostUpdate Expression that must be executed after exit from the 
-   /// OpenMP region with this clause. 
-   static OMPTaskReductionClause * 
-   Create(const ASTContext &C, SourceLocation StartLoc, SourceLocation LParenLoc, 
-          SourceLocation ColonLoc, SourceLocation EndLoc, ArrayRef<Expr *> VL, 
-          NestedNameSpecifierLoc QualifierLoc, 
-          const DeclarationNameInfo &NameInfo, ArrayRef<Expr *> Privates, 
-          ArrayRef<Expr *> LHSExprs, ArrayRef<Expr *> RHSExprs, 
-          ArrayRef<Expr *> ReductionOps, Stmt *PreInit, Expr *PostUpdate); 
-   
-   /// Creates an empty clause with the place for \a N variables. 
-   /// 
-   /// \param C AST context. 
-   /// \param N The number of variables. 
-   static OMPTaskReductionClause *CreateEmpty(const ASTContext &C, unsigned N); 
-   
-   /// Gets location of ':' symbol in clause. 
-   SourceLocation getColonLoc() const { return ColonLoc; } 
-   
-   /// Gets the name info for specified reduction identifier. 
-   const DeclarationNameInfo &getNameInfo() const { return NameInfo; } 
-   
-   /// Gets the nested name specifier. 
-   NestedNameSpecifierLoc getQualifierLoc() const { return QualifierLoc; } 
-   
-   using helper_expr_iterator = MutableArrayRef<Expr *>::iterator; 
-   using helper_expr_const_iterator = ArrayRef<const Expr *>::iterator; 
-   using helper_expr_range = llvm::iterator_range<helper_expr_iterator>; 
-   using helper_expr_const_range = 
-       llvm::iterator_range<helper_expr_const_iterator>; 
-   
-   helper_expr_const_range privates() const { 
-     return helper_expr_const_range(getPrivates().begin(), getPrivates().end()); 
-   } 
-   
-   helper_expr_range privates() { 
-     return helper_expr_range(getPrivates().begin(), getPrivates().end()); 
-   } 
-   
-   helper_expr_const_range lhs_exprs() const { 
-     return helper_expr_const_range(getLHSExprs().begin(), getLHSExprs().end()); 
-   } 
-   
-   helper_expr_range lhs_exprs() { 
-     return helper_expr_range(getLHSExprs().begin(), getLHSExprs().end()); 
-   } 
-   
-   helper_expr_const_range rhs_exprs() const { 
-     return helper_expr_const_range(getRHSExprs().begin(), getRHSExprs().end()); 
-   } 
-   
-   helper_expr_range rhs_exprs() { 
-     return helper_expr_range(getRHSExprs().begin(), getRHSExprs().end()); 
-   } 
-   
-   helper_expr_const_range reduction_ops() const { 
-     return helper_expr_const_range(getReductionOps().begin(), 
-                                    getReductionOps().end()); 
-   } 
-   
-   helper_expr_range reduction_ops() { 
-     return helper_expr_range(getReductionOps().begin(), 
-                              getReductionOps().end()); 
-   } 
-   
-   child_range children() { 
-     return child_range(reinterpret_cast<Stmt **>(varlist_begin()), 
-                        reinterpret_cast<Stmt **>(varlist_end())); 
-   } 
-   
-   const_child_range children() const { 
-     auto Children = const_cast<OMPTaskReductionClause *>(this)->children(); 
-     return const_child_range(Children.begin(), Children.end()); 
-   } 
-   
-   child_range used_children() { 
-     return child_range(child_iterator(), child_iterator()); 
-   } 
-   const_child_range used_children() const { 
-     return const_child_range(const_child_iterator(), const_child_iterator()); 
-   } 
-   
-   static bool classof(const OMPClause *T) { 
-     return T->getClauseKind() == llvm::omp::OMPC_task_reduction; 
-   } 
- }; 
-   
- /// This represents clause 'in_reduction' in the '#pragma omp task' directives. 
- /// 
- /// \code 
- /// #pragma omp task in_reduction(+:a,b) 
- /// \endcode 
- /// In this example directive '#pragma omp task' has clause 'in_reduction' with 
- /// operator '+' and the variables 'a' and 'b'. 
- class OMPInReductionClause final 
-     : public OMPVarListClause<OMPInReductionClause>, 
-       public OMPClauseWithPostUpdate, 
-       private llvm::TrailingObjects<OMPInReductionClause, Expr *> { 
-   friend class OMPClauseReader; 
-   friend OMPVarListClause; 
-   friend TrailingObjects; 
-   
-   /// Location of ':'. 
-   SourceLocation ColonLoc; 
-   
-   /// Nested name specifier for C++. 
-   NestedNameSpecifierLoc QualifierLoc; 
-   
-   /// Name of custom operator. 
-   DeclarationNameInfo NameInfo; 
-   
-   /// Build clause with number of variables \a N. 
-   /// 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param LParenLoc Location of '('. 
-   /// \param EndLoc Ending location of the clause. 
-   /// \param ColonLoc Location of ':'. 
-   /// \param N Number of the variables in the clause. 
-   /// \param QualifierLoc The nested-name qualifier with location information 
-   /// \param NameInfo The full name info for reduction identifier. 
-   OMPInReductionClause(SourceLocation StartLoc, SourceLocation LParenLoc, 
-                        SourceLocation ColonLoc, SourceLocation EndLoc, 
-                        unsigned N, NestedNameSpecifierLoc QualifierLoc, 
-                        const DeclarationNameInfo &NameInfo) 
-       : OMPVarListClause<OMPInReductionClause>(llvm::omp::OMPC_in_reduction, 
-                                                StartLoc, LParenLoc, EndLoc, N), 
-         OMPClauseWithPostUpdate(this), ColonLoc(ColonLoc), 
-         QualifierLoc(QualifierLoc), NameInfo(NameInfo) {} 
-   
-   /// Build an empty clause. 
-   /// 
-   /// \param N Number of variables. 
-   explicit OMPInReductionClause(unsigned N) 
-       : OMPVarListClause<OMPInReductionClause>( 
-             llvm::omp::OMPC_in_reduction, SourceLocation(), SourceLocation(), 
-             SourceLocation(), N), 
-         OMPClauseWithPostUpdate(this) {} 
-   
-   /// Sets location of ':' symbol in clause. 
-   void setColonLoc(SourceLocation CL) { ColonLoc = CL; } 
-   
-   /// Sets the name info for specified reduction identifier. 
-   void setNameInfo(DeclarationNameInfo DNI) { NameInfo = DNI; } 
-   
-   /// Sets the nested name specifier. 
-   void setQualifierLoc(NestedNameSpecifierLoc NSL) { QualifierLoc = NSL; } 
-   
-   /// Set list of helper expressions, required for proper codegen of the clause. 
-   /// These expressions represent private copy of the reduction variable. 
-   void setPrivates(ArrayRef<Expr *> Privates); 
-   
-   /// Get the list of helper privates. 
-   MutableArrayRef<Expr *> getPrivates() { 
-     return MutableArrayRef<Expr *>(varlist_end(), varlist_size()); 
-   } 
-   ArrayRef<const Expr *> getPrivates() const { 
-     return llvm::ArrayRef(varlist_end(), varlist_size()); 
-   } 
-   
-   /// Set list of helper expressions, required for proper codegen of the clause. 
-   /// These expressions represent LHS expression in the final reduction 
-   /// expression performed by the reduction clause. 
-   void setLHSExprs(ArrayRef<Expr *> LHSExprs); 
-   
-   /// Get the list of helper LHS expressions. 
-   MutableArrayRef<Expr *> getLHSExprs() { 
-     return MutableArrayRef<Expr *>(getPrivates().end(), varlist_size()); 
-   } 
-   ArrayRef<const Expr *> getLHSExprs() const { 
-     return llvm::ArrayRef(getPrivates().end(), varlist_size()); 
-   } 
-   
-   /// Set list of helper expressions, required for proper codegen of the clause. 
-   /// These expressions represent RHS expression in the final reduction 
-   /// expression performed by the reduction clause. Also, variables in these 
-   /// expressions are used for proper initialization of reduction copies. 
-   void setRHSExprs(ArrayRef<Expr *> RHSExprs); 
-   
-   ///  Get the list of helper destination expressions. 
-   MutableArrayRef<Expr *> getRHSExprs() { 
-     return MutableArrayRef<Expr *>(getLHSExprs().end(), varlist_size()); 
-   } 
-   ArrayRef<const Expr *> getRHSExprs() const { 
-     return llvm::ArrayRef(getLHSExprs().end(), varlist_size()); 
-   } 
-   
-   /// Set list of helper reduction expressions, required for proper 
-   /// codegen of the clause. These expressions are binary expressions or 
-   /// operator/custom reduction call that calculates new value from source 
-   /// helper expressions to destination helper expressions. 
-   void setReductionOps(ArrayRef<Expr *> ReductionOps); 
-   
-   ///  Get the list of helper reduction expressions. 
-   MutableArrayRef<Expr *> getReductionOps() { 
-     return MutableArrayRef<Expr *>(getRHSExprs().end(), varlist_size()); 
-   } 
-   ArrayRef<const Expr *> getReductionOps() const { 
-     return llvm::ArrayRef(getRHSExprs().end(), varlist_size()); 
-   } 
-   
-   /// Set list of helper reduction taskgroup descriptors. 
-   void setTaskgroupDescriptors(ArrayRef<Expr *> ReductionOps); 
-   
-   ///  Get the list of helper reduction taskgroup descriptors. 
-   MutableArrayRef<Expr *> getTaskgroupDescriptors() { 
-     return MutableArrayRef<Expr *>(getReductionOps().end(), varlist_size()); 
-   } 
-   ArrayRef<const Expr *> getTaskgroupDescriptors() const { 
-     return llvm::ArrayRef(getReductionOps().end(), varlist_size()); 
-   } 
-   
- public: 
-   /// Creates clause with a list of variables \a VL. 
-   /// 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param LParenLoc Location of '('. 
-   /// \param ColonLoc Location of ':'. 
-   /// \param EndLoc Ending location of the clause. 
-   /// \param VL The variables in the clause. 
-   /// \param QualifierLoc The nested-name qualifier with location information 
-   /// \param NameInfo The full name info for reduction identifier. 
-   /// \param Privates List of helper expressions for proper generation of 
-   /// private copies. 
-   /// \param LHSExprs List of helper expressions for proper generation of 
-   /// assignment operation required for copyprivate clause. This list represents 
-   /// LHSs of the reduction expressions. 
-   /// \param RHSExprs List of helper expressions for proper generation of 
-   /// assignment operation required for copyprivate clause. This list represents 
-   /// RHSs of the reduction expressions. 
-   /// Also, variables in these expressions are used for proper initialization of 
-   /// reduction copies. 
-   /// \param ReductionOps List of helper expressions that represents reduction 
-   /// expressions: 
-   /// \code 
-   /// LHSExprs binop RHSExprs; 
-   /// operator binop(LHSExpr, RHSExpr); 
-   /// <CutomReduction>(LHSExpr, RHSExpr); 
-   /// \endcode 
-   /// Required for proper codegen of final reduction operation performed by the 
-   /// reduction clause. 
-   /// \param TaskgroupDescriptors List of helper taskgroup descriptors for 
-   /// corresponding items in parent taskgroup task_reduction clause. 
-   /// \param PreInit Statement that must be executed before entering the OpenMP 
-   /// region with this clause. 
-   /// \param PostUpdate Expression that must be executed after exit from the 
-   /// OpenMP region with this clause. 
-   static OMPInReductionClause * 
-   Create(const ASTContext &C, SourceLocation StartLoc, SourceLocation LParenLoc, 
-          SourceLocation ColonLoc, SourceLocation EndLoc, ArrayRef<Expr *> VL, 
-          NestedNameSpecifierLoc QualifierLoc, 
-          const DeclarationNameInfo &NameInfo, ArrayRef<Expr *> Privates, 
-          ArrayRef<Expr *> LHSExprs, ArrayRef<Expr *> RHSExprs, 
-          ArrayRef<Expr *> ReductionOps, ArrayRef<Expr *> TaskgroupDescriptors, 
-          Stmt *PreInit, Expr *PostUpdate); 
-   
-   /// Creates an empty clause with the place for \a N variables. 
-   /// 
-   /// \param C AST context. 
-   /// \param N The number of variables. 
-   static OMPInReductionClause *CreateEmpty(const ASTContext &C, unsigned N); 
-   
-   /// Gets location of ':' symbol in clause. 
-   SourceLocation getColonLoc() const { return ColonLoc; } 
-   
-   /// Gets the name info for specified reduction identifier. 
-   const DeclarationNameInfo &getNameInfo() const { return NameInfo; } 
-   
-   /// Gets the nested name specifier. 
-   NestedNameSpecifierLoc getQualifierLoc() const { return QualifierLoc; } 
-   
-   using helper_expr_iterator = MutableArrayRef<Expr *>::iterator; 
-   using helper_expr_const_iterator = ArrayRef<const Expr *>::iterator; 
-   using helper_expr_range = llvm::iterator_range<helper_expr_iterator>; 
-   using helper_expr_const_range = 
-       llvm::iterator_range<helper_expr_const_iterator>; 
-   
-   helper_expr_const_range privates() const { 
-     return helper_expr_const_range(getPrivates().begin(), getPrivates().end()); 
-   } 
-   
-   helper_expr_range privates() { 
-     return helper_expr_range(getPrivates().begin(), getPrivates().end()); 
-   } 
-   
-   helper_expr_const_range lhs_exprs() const { 
-     return helper_expr_const_range(getLHSExprs().begin(), getLHSExprs().end()); 
-   } 
-   
-   helper_expr_range lhs_exprs() { 
-     return helper_expr_range(getLHSExprs().begin(), getLHSExprs().end()); 
-   } 
-   
-   helper_expr_const_range rhs_exprs() const { 
-     return helper_expr_const_range(getRHSExprs().begin(), getRHSExprs().end()); 
-   } 
-   
-   helper_expr_range rhs_exprs() { 
-     return helper_expr_range(getRHSExprs().begin(), getRHSExprs().end()); 
-   } 
-   
-   helper_expr_const_range reduction_ops() const { 
-     return helper_expr_const_range(getReductionOps().begin(), 
-                                    getReductionOps().end()); 
-   } 
-   
-   helper_expr_range reduction_ops() { 
-     return helper_expr_range(getReductionOps().begin(), 
-                              getReductionOps().end()); 
-   } 
-   
-   helper_expr_const_range taskgroup_descriptors() const { 
-     return helper_expr_const_range(getTaskgroupDescriptors().begin(), 
-                                    getTaskgroupDescriptors().end()); 
-   } 
-   
-   helper_expr_range taskgroup_descriptors() { 
-     return helper_expr_range(getTaskgroupDescriptors().begin(), 
-                              getTaskgroupDescriptors().end()); 
-   } 
-   
-   child_range children() { 
-     return child_range(reinterpret_cast<Stmt **>(varlist_begin()), 
-                        reinterpret_cast<Stmt **>(varlist_end())); 
-   } 
-   
-   const_child_range children() const { 
-     auto Children = const_cast<OMPInReductionClause *>(this)->children(); 
-     return const_child_range(Children.begin(), Children.end()); 
-   } 
-   
-   child_range used_children() { 
-     return child_range(child_iterator(), child_iterator()); 
-   } 
-   const_child_range used_children() const { 
-     return const_child_range(const_child_iterator(), const_child_iterator()); 
-   } 
-   
-   static bool classof(const OMPClause *T) { 
-     return T->getClauseKind() == llvm::omp::OMPC_in_reduction; 
-   } 
- }; 
-   
- /// This represents clause 'linear' in the '#pragma omp ...' 
- /// directives. 
- /// 
- /// \code 
- /// #pragma omp simd linear(a,b : 2) 
- /// \endcode 
- /// In this example directive '#pragma omp simd' has clause 'linear' 
- /// with variables 'a', 'b' and linear step '2'. 
- class OMPLinearClause final 
-     : public OMPVarListClause<OMPLinearClause>, 
-       public OMPClauseWithPostUpdate, 
-       private llvm::TrailingObjects<OMPLinearClause, Expr *> { 
-   friend class OMPClauseReader; 
-   friend OMPVarListClause; 
-   friend TrailingObjects; 
-   
-   /// Modifier of 'linear' clause. 
-   OpenMPLinearClauseKind Modifier = OMPC_LINEAR_val; 
-   
-   /// Location of linear modifier if any. 
-   SourceLocation ModifierLoc; 
-   
-   /// Location of ':'. 
-   SourceLocation ColonLoc; 
-   
-   /// Sets the linear step for clause. 
-   void setStep(Expr *Step) { *(getFinals().end()) = Step; } 
-   
-   /// Sets the expression to calculate linear step for clause. 
-   void setCalcStep(Expr *CalcStep) { *(getFinals().end() + 1) = CalcStep; } 
-   
-   /// Build 'linear' clause with given number of variables \a NumVars. 
-   /// 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param LParenLoc Location of '('. 
-   /// \param ColonLoc Location of ':'. 
-   /// \param EndLoc Ending location of the clause. 
-   /// \param NumVars Number of variables. 
-   OMPLinearClause(SourceLocation StartLoc, SourceLocation LParenLoc, 
-                   OpenMPLinearClauseKind Modifier, SourceLocation ModifierLoc, 
-                   SourceLocation ColonLoc, SourceLocation EndLoc, 
-                   unsigned NumVars) 
-       : OMPVarListClause<OMPLinearClause>(llvm::omp::OMPC_linear, StartLoc, 
-                                           LParenLoc, EndLoc, NumVars), 
-         OMPClauseWithPostUpdate(this), Modifier(Modifier), 
-         ModifierLoc(ModifierLoc), ColonLoc(ColonLoc) {} 
-   
-   /// Build an empty clause. 
-   /// 
-   /// \param NumVars Number of variables. 
-   explicit OMPLinearClause(unsigned NumVars) 
-       : OMPVarListClause<OMPLinearClause>(llvm::omp::OMPC_linear, 
-                                           SourceLocation(), SourceLocation(), 
-                                           SourceLocation(), NumVars), 
-         OMPClauseWithPostUpdate(this) {} 
-   
-   /// Gets the list of initial values for linear variables. 
-   /// 
-   /// There are NumVars expressions with initial values allocated after the 
-   /// varlist, they are followed by NumVars update expressions (used to update 
-   /// the linear variable's value on current iteration) and they are followed by 
-   /// NumVars final expressions (used to calculate the linear variable's 
-   /// value after the loop body). After these lists, there are 2 helper 
-   /// expressions - linear step and a helper to calculate it before the 
-   /// loop body (used when the linear step is not constant): 
-   /// 
-   /// { Vars[] /* in OMPVarListClause */; Privates[]; Inits[]; Updates[]; 
-   /// Finals[]; Step; CalcStep; } 
-   MutableArrayRef<Expr *> getPrivates() { 
-     return MutableArrayRef<Expr *>(varlist_end(), varlist_size()); 
-   } 
-   ArrayRef<const Expr *> getPrivates() const { 
-     return llvm::ArrayRef(varlist_end(), varlist_size()); 
-   } 
-   
-   MutableArrayRef<Expr *> getInits() { 
-     return MutableArrayRef<Expr *>(getPrivates().end(), varlist_size()); 
-   } 
-   ArrayRef<const Expr *> getInits() const { 
-     return llvm::ArrayRef(getPrivates().end(), varlist_size()); 
-   } 
-   
-   /// Sets the list of update expressions for linear variables. 
-   MutableArrayRef<Expr *> getUpdates() { 
-     return MutableArrayRef<Expr *>(getInits().end(), varlist_size()); 
-   } 
-   ArrayRef<const Expr *> getUpdates() const { 
-     return llvm::ArrayRef(getInits().end(), varlist_size()); 
-   } 
-   
-   /// Sets the list of final update expressions for linear variables. 
-   MutableArrayRef<Expr *> getFinals() { 
-     return MutableArrayRef<Expr *>(getUpdates().end(), varlist_size()); 
-   } 
-   ArrayRef<const Expr *> getFinals() const { 
-     return llvm::ArrayRef(getUpdates().end(), varlist_size()); 
-   } 
-   
-   /// Gets the list of used expressions for linear variables. 
-   MutableArrayRef<Expr *> getUsedExprs() { 
-     return MutableArrayRef<Expr *>(getFinals().end() + 2, varlist_size() + 1); 
-   } 
-   ArrayRef<const Expr *> getUsedExprs() const { 
-     return llvm::ArrayRef(getFinals().end() + 2, varlist_size() + 1); 
-   } 
-   
-   /// Sets the list of the copies of original linear variables. 
-   /// \param PL List of expressions. 
-   void setPrivates(ArrayRef<Expr *> PL); 
-   
-   /// Sets the list of the initial values for linear variables. 
-   /// \param IL List of expressions. 
-   void setInits(ArrayRef<Expr *> IL); 
-   
- public: 
-   /// Creates clause with a list of variables \a VL and a linear step 
-   /// \a Step. 
-   /// 
-   /// \param C AST Context. 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param LParenLoc Location of '('. 
-   /// \param Modifier Modifier of 'linear' clause. 
-   /// \param ModifierLoc Modifier location. 
-   /// \param ColonLoc Location of ':'. 
-   /// \param EndLoc Ending location of the clause. 
-   /// \param VL List of references to the variables. 
-   /// \param PL List of private copies of original variables. 
-   /// \param IL List of initial values for the variables. 
-   /// \param Step Linear step. 
-   /// \param CalcStep Calculation of the linear step. 
-   /// \param PreInit Statement that must be executed before entering the OpenMP 
-   /// region with this clause. 
-   /// \param PostUpdate Expression that must be executed after exit from the 
-   /// OpenMP region with this clause. 
-   static OMPLinearClause * 
-   Create(const ASTContext &C, SourceLocation StartLoc, SourceLocation LParenLoc, 
-          OpenMPLinearClauseKind Modifier, SourceLocation ModifierLoc, 
-          SourceLocation ColonLoc, SourceLocation EndLoc, ArrayRef<Expr *> VL, 
-          ArrayRef<Expr *> PL, ArrayRef<Expr *> IL, Expr *Step, Expr *CalcStep, 
-          Stmt *PreInit, Expr *PostUpdate); 
-   
-   /// Creates an empty clause with the place for \a NumVars variables. 
-   /// 
-   /// \param C AST context. 
-   /// \param NumVars Number of variables. 
-   static OMPLinearClause *CreateEmpty(const ASTContext &C, unsigned NumVars); 
-   
-   /// Set modifier. 
-   void setModifier(OpenMPLinearClauseKind Kind) { Modifier = Kind; } 
-   
-   /// Return modifier. 
-   OpenMPLinearClauseKind getModifier() const { return Modifier; } 
-   
-   /// Set modifier location. 
-   void setModifierLoc(SourceLocation Loc) { ModifierLoc = Loc; } 
-   
-   /// Return modifier location. 
-   SourceLocation getModifierLoc() const { return ModifierLoc; } 
-   
-   /// Sets the location of ':'. 
-   void setColonLoc(SourceLocation Loc) { ColonLoc = Loc; } 
-   
-   /// Returns the location of ':'. 
-   SourceLocation getColonLoc() const { return ColonLoc; } 
-   
-   /// Returns linear step. 
-   Expr *getStep() { return *(getFinals().end()); } 
-   
-   /// Returns linear step. 
-   const Expr *getStep() const { return *(getFinals().end()); } 
-   
-   /// Returns expression to calculate linear step. 
-   Expr *getCalcStep() { return *(getFinals().end() + 1); } 
-   
-   /// Returns expression to calculate linear step. 
-   const Expr *getCalcStep() const { return *(getFinals().end() + 1); } 
-   
-   /// Sets the list of update expressions for linear variables. 
-   /// \param UL List of expressions. 
-   void setUpdates(ArrayRef<Expr *> UL); 
-   
-   /// Sets the list of final update expressions for linear variables. 
-   /// \param FL List of expressions. 
-   void setFinals(ArrayRef<Expr *> FL); 
-   
-   /// Sets the list of used expressions for the linear clause. 
-   void setUsedExprs(ArrayRef<Expr *> UE); 
-   
-   using privates_iterator = MutableArrayRef<Expr *>::iterator; 
-   using privates_const_iterator = ArrayRef<const Expr *>::iterator; 
-   using privates_range = llvm::iterator_range<privates_iterator>; 
-   using privates_const_range = llvm::iterator_range<privates_const_iterator>; 
-   
-   privates_range privates() { 
-     return privates_range(getPrivates().begin(), getPrivates().end()); 
-   } 
-   
-   privates_const_range privates() const { 
-     return privates_const_range(getPrivates().begin(), getPrivates().end()); 
-   } 
-   
-   using inits_iterator = MutableArrayRef<Expr *>::iterator; 
-   using inits_const_iterator = ArrayRef<const Expr *>::iterator; 
-   using inits_range = llvm::iterator_range<inits_iterator>; 
-   using inits_const_range = llvm::iterator_range<inits_const_iterator>; 
-   
-   inits_range inits() { 
-     return inits_range(getInits().begin(), getInits().end()); 
-   } 
-   
-   inits_const_range inits() const { 
-     return inits_const_range(getInits().begin(), getInits().end()); 
-   } 
-   
-   using updates_iterator = MutableArrayRef<Expr *>::iterator; 
-   using updates_const_iterator = ArrayRef<const Expr *>::iterator; 
-   using updates_range = llvm::iterator_range<updates_iterator>; 
-   using updates_const_range = llvm::iterator_range<updates_const_iterator>; 
-   
-   updates_range updates() { 
-     return updates_range(getUpdates().begin(), getUpdates().end()); 
-   } 
-   
-   updates_const_range updates() const { 
-     return updates_const_range(getUpdates().begin(), getUpdates().end()); 
-   } 
-   
-   using finals_iterator = MutableArrayRef<Expr *>::iterator; 
-   using finals_const_iterator = ArrayRef<const Expr *>::iterator; 
-   using finals_range = llvm::iterator_range<finals_iterator>; 
-   using finals_const_range = llvm::iterator_range<finals_const_iterator>; 
-   
-   finals_range finals() { 
-     return finals_range(getFinals().begin(), getFinals().end()); 
-   } 
-   
-   finals_const_range finals() const { 
-     return finals_const_range(getFinals().begin(), getFinals().end()); 
-   } 
-   
-   using used_expressions_iterator = MutableArrayRef<Expr *>::iterator; 
-   using used_expressions_const_iterator = ArrayRef<const Expr *>::iterator; 
-   using used_expressions_range = 
-       llvm::iterator_range<used_expressions_iterator>; 
-   using used_expressions_const_range = 
-       llvm::iterator_range<used_expressions_const_iterator>; 
-   
-   used_expressions_range used_expressions() { 
-     return finals_range(getUsedExprs().begin(), getUsedExprs().end()); 
-   } 
-   
-   used_expressions_const_range used_expressions() const { 
-     return finals_const_range(getUsedExprs().begin(), getUsedExprs().end()); 
-   } 
-   
-   child_range children() { 
-     return child_range(reinterpret_cast<Stmt **>(varlist_begin()), 
-                        reinterpret_cast<Stmt **>(varlist_end())); 
-   } 
-   
-   const_child_range children() const { 
-     auto Children = const_cast<OMPLinearClause *>(this)->children(); 
-     return const_child_range(Children.begin(), Children.end()); 
-   } 
-   
-   child_range used_children(); 
-   
-   const_child_range used_children() const { 
-     auto Children = const_cast<OMPLinearClause *>(this)->used_children(); 
-     return const_child_range(Children.begin(), Children.end()); 
-   } 
-   
-   static bool classof(const OMPClause *T) { 
-     return T->getClauseKind() == llvm::omp::OMPC_linear; 
-   } 
- }; 
-   
- /// This represents clause 'aligned' in the '#pragma omp ...' 
- /// directives. 
- /// 
- /// \code 
- /// #pragma omp simd aligned(a,b : 8) 
- /// \endcode 
- /// In this example directive '#pragma omp simd' has clause 'aligned' 
- /// with variables 'a', 'b' and alignment '8'. 
- class OMPAlignedClause final 
-     : public OMPVarListClause<OMPAlignedClause>, 
-       private llvm::TrailingObjects<OMPAlignedClause, Expr *> { 
-   friend class OMPClauseReader; 
-   friend OMPVarListClause; 
-   friend TrailingObjects; 
-   
-   /// Location of ':'. 
-   SourceLocation ColonLoc; 
-   
-   /// Sets the alignment for clause. 
-   void setAlignment(Expr *A) { *varlist_end() = A; } 
-   
-   /// Build 'aligned' clause with given number of variables \a NumVars. 
-   /// 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param LParenLoc Location of '('. 
-   /// \param ColonLoc Location of ':'. 
-   /// \param EndLoc Ending location of the clause. 
-   /// \param NumVars Number of variables. 
-   OMPAlignedClause(SourceLocation StartLoc, SourceLocation LParenLoc, 
-                    SourceLocation ColonLoc, SourceLocation EndLoc, 
-                    unsigned NumVars) 
-       : OMPVarListClause<OMPAlignedClause>(llvm::omp::OMPC_aligned, StartLoc, 
-                                            LParenLoc, EndLoc, NumVars), 
-         ColonLoc(ColonLoc) {} 
-   
-   /// Build an empty clause. 
-   /// 
-   /// \param NumVars Number of variables. 
-   explicit OMPAlignedClause(unsigned NumVars) 
-       : OMPVarListClause<OMPAlignedClause>(llvm::omp::OMPC_aligned, 
-                                            SourceLocation(), SourceLocation(), 
-                                            SourceLocation(), NumVars) {} 
-   
- public: 
-   /// Creates clause with a list of variables \a VL and alignment \a A. 
-   /// 
-   /// \param C AST Context. 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param LParenLoc Location of '('. 
-   /// \param ColonLoc Location of ':'. 
-   /// \param EndLoc Ending location of the clause. 
-   /// \param VL List of references to the variables. 
-   /// \param A Alignment. 
-   static OMPAlignedClause *Create(const ASTContext &C, SourceLocation StartLoc, 
-                                   SourceLocation LParenLoc, 
-                                   SourceLocation ColonLoc, 
-                                   SourceLocation EndLoc, ArrayRef<Expr *> VL, 
-                                   Expr *A); 
-   
-   /// Creates an empty clause with the place for \a NumVars variables. 
-   /// 
-   /// \param C AST context. 
-   /// \param NumVars Number of variables. 
-   static OMPAlignedClause *CreateEmpty(const ASTContext &C, unsigned NumVars); 
-   
-   /// Sets the location of ':'. 
-   void setColonLoc(SourceLocation Loc) { ColonLoc = Loc; } 
-   
-   /// Returns the location of ':'. 
-   SourceLocation getColonLoc() const { return ColonLoc; } 
-   
-   /// Returns alignment. 
-   Expr *getAlignment() { return *varlist_end(); } 
-   
-   /// Returns alignment. 
-   const Expr *getAlignment() const { return *varlist_end(); } 
-   
-   child_range children() { 
-     return child_range(reinterpret_cast<Stmt **>(varlist_begin()), 
-                        reinterpret_cast<Stmt **>(varlist_end())); 
-   } 
-   
-   const_child_range children() const { 
-     auto Children = const_cast<OMPAlignedClause *>(this)->children(); 
-     return const_child_range(Children.begin(), Children.end()); 
-   } 
-   
-   child_range used_children() { 
-     return child_range(child_iterator(), child_iterator()); 
-   } 
-   const_child_range used_children() const { 
-     return const_child_range(const_child_iterator(), const_child_iterator()); 
-   } 
-   
-   static bool classof(const OMPClause *T) { 
-     return T->getClauseKind() == llvm::omp::OMPC_aligned; 
-   } 
- }; 
-   
- /// This represents clause 'copyin' in the '#pragma omp ...' directives. 
- /// 
- /// \code 
- /// #pragma omp parallel copyin(a,b) 
- /// \endcode 
- /// In this example directive '#pragma omp parallel' has clause 'copyin' 
- /// with the variables 'a' and 'b'. 
- class OMPCopyinClause final 
-     : public OMPVarListClause<OMPCopyinClause>, 
-       private llvm::TrailingObjects<OMPCopyinClause, Expr *> { 
-   // Class has 3 additional tail allocated arrays: 
-   // 1. List of helper expressions for proper generation of assignment operation 
-   // required for copyin clause. This list represents sources. 
-   // 2. List of helper expressions for proper generation of assignment operation 
-   // required for copyin clause. This list represents destinations. 
-   // 3. List of helper expressions that represents assignment operation: 
-   // \code 
-   // DstExprs = SrcExprs; 
-   // \endcode 
-   // Required for proper codegen of propagation of master's thread values of 
-   // threadprivate variables to local instances of that variables in other 
-   // implicit threads. 
-   
-   friend class OMPClauseReader; 
-   friend OMPVarListClause; 
-   friend TrailingObjects; 
-   
-   /// Build clause with number of variables \a N. 
-   /// 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param LParenLoc Location of '('. 
-   /// \param EndLoc Ending location of the clause. 
-   /// \param N Number of the variables in the clause. 
-   OMPCopyinClause(SourceLocation StartLoc, SourceLocation LParenLoc, 
-                   SourceLocation EndLoc, unsigned N) 
-       : OMPVarListClause<OMPCopyinClause>(llvm::omp::OMPC_copyin, StartLoc, 
-                                           LParenLoc, EndLoc, N) {} 
-   
-   /// Build an empty clause. 
-   /// 
-   /// \param N Number of variables. 
-   explicit OMPCopyinClause(unsigned N) 
-       : OMPVarListClause<OMPCopyinClause>(llvm::omp::OMPC_copyin, 
-                                           SourceLocation(), SourceLocation(), 
-                                           SourceLocation(), N) {} 
-   
-   /// Set list of helper expressions, required for proper codegen of the 
-   /// clause. These expressions represent source expression in the final 
-   /// assignment statement performed by the copyin clause. 
-   void setSourceExprs(ArrayRef<Expr *> SrcExprs); 
-   
-   /// Get the list of helper source expressions. 
-   MutableArrayRef<Expr *> getSourceExprs() { 
-     return MutableArrayRef<Expr *>(varlist_end(), varlist_size()); 
-   } 
-   ArrayRef<const Expr *> getSourceExprs() const { 
-     return llvm::ArrayRef(varlist_end(), varlist_size()); 
-   } 
-   
-   /// Set list of helper expressions, required for proper codegen of the 
-   /// clause. These expressions represent destination expression in the final 
-   /// assignment statement performed by the copyin clause. 
-   void setDestinationExprs(ArrayRef<Expr *> DstExprs); 
-   
-   /// Get the list of helper destination expressions. 
-   MutableArrayRef<Expr *> getDestinationExprs() { 
-     return MutableArrayRef<Expr *>(getSourceExprs().end(), varlist_size()); 
-   } 
-   ArrayRef<const Expr *> getDestinationExprs() const { 
-     return llvm::ArrayRef(getSourceExprs().end(), varlist_size()); 
-   } 
-   
-   /// Set list of helper assignment expressions, required for proper 
-   /// codegen of the clause. These expressions are assignment expressions that 
-   /// assign source helper expressions to destination helper expressions 
-   /// correspondingly. 
-   void setAssignmentOps(ArrayRef<Expr *> AssignmentOps); 
-   
-   /// Get the list of helper assignment expressions. 
-   MutableArrayRef<Expr *> getAssignmentOps() { 
-     return MutableArrayRef<Expr *>(getDestinationExprs().end(), varlist_size()); 
-   } 
-   ArrayRef<const Expr *> getAssignmentOps() const { 
-     return llvm::ArrayRef(getDestinationExprs().end(), varlist_size()); 
-   } 
-   
- public: 
-   /// Creates clause with a list of variables \a VL. 
-   /// 
-   /// \param C AST context. 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param LParenLoc Location of '('. 
-   /// \param EndLoc Ending location of the clause. 
-   /// \param VL List of references to the variables. 
-   /// \param SrcExprs List of helper expressions for proper generation of 
-   /// assignment operation required for copyin clause. This list represents 
-   /// sources. 
-   /// \param DstExprs List of helper expressions for proper generation of 
-   /// assignment operation required for copyin clause. This list represents 
-   /// destinations. 
-   /// \param AssignmentOps List of helper expressions that represents assignment 
-   /// operation: 
-   /// \code 
-   /// DstExprs = SrcExprs; 
-   /// \endcode 
-   /// Required for proper codegen of propagation of master's thread values of 
-   /// threadprivate variables to local instances of that variables in other 
-   /// implicit threads. 
-   static OMPCopyinClause * 
-   Create(const ASTContext &C, SourceLocation StartLoc, SourceLocation LParenLoc, 
-          SourceLocation EndLoc, ArrayRef<Expr *> VL, ArrayRef<Expr *> SrcExprs, 
-          ArrayRef<Expr *> DstExprs, ArrayRef<Expr *> AssignmentOps); 
-   
-   /// Creates an empty clause with \a N variables. 
-   /// 
-   /// \param C AST context. 
-   /// \param N The number of variables. 
-   static OMPCopyinClause *CreateEmpty(const ASTContext &C, unsigned N); 
-   
-   using helper_expr_iterator = MutableArrayRef<Expr *>::iterator; 
-   using helper_expr_const_iterator = ArrayRef<const Expr *>::iterator; 
-   using helper_expr_range = llvm::iterator_range<helper_expr_iterator>; 
-   using helper_expr_const_range = 
-       llvm::iterator_range<helper_expr_const_iterator>; 
-   
-   helper_expr_const_range source_exprs() const { 
-     return helper_expr_const_range(getSourceExprs().begin(), 
-                                    getSourceExprs().end()); 
-   } 
-   
-   helper_expr_range source_exprs() { 
-     return helper_expr_range(getSourceExprs().begin(), getSourceExprs().end()); 
-   } 
-   
-   helper_expr_const_range destination_exprs() const { 
-     return helper_expr_const_range(getDestinationExprs().begin(), 
-                                    getDestinationExprs().end()); 
-   } 
-   
-   helper_expr_range destination_exprs() { 
-     return helper_expr_range(getDestinationExprs().begin(), 
-                              getDestinationExprs().end()); 
-   } 
-   
-   helper_expr_const_range assignment_ops() const { 
-     return helper_expr_const_range(getAssignmentOps().begin(), 
-                                    getAssignmentOps().end()); 
-   } 
-   
-   helper_expr_range assignment_ops() { 
-     return helper_expr_range(getAssignmentOps().begin(), 
-                              getAssignmentOps().end()); 
-   } 
-   
-   child_range children() { 
-     return child_range(reinterpret_cast<Stmt **>(varlist_begin()), 
-                        reinterpret_cast<Stmt **>(varlist_end())); 
-   } 
-   
-   const_child_range children() const { 
-     auto Children = const_cast<OMPCopyinClause *>(this)->children(); 
-     return const_child_range(Children.begin(), Children.end()); 
-   } 
-   
-   child_range used_children() { 
-     return child_range(child_iterator(), child_iterator()); 
-   } 
-   const_child_range used_children() const { 
-     return const_child_range(const_child_iterator(), const_child_iterator()); 
-   } 
-   
-   static bool classof(const OMPClause *T) { 
-     return T->getClauseKind() == llvm::omp::OMPC_copyin; 
-   } 
- }; 
-   
- /// This represents clause 'copyprivate' in the '#pragma omp ...' 
- /// directives. 
- /// 
- /// \code 
- /// #pragma omp single copyprivate(a,b) 
- /// \endcode 
- /// In this example directive '#pragma omp single' has clause 'copyprivate' 
- /// with the variables 'a' and 'b'. 
- class OMPCopyprivateClause final 
-     : public OMPVarListClause<OMPCopyprivateClause>, 
-       private llvm::TrailingObjects<OMPCopyprivateClause, Expr *> { 
-   friend class OMPClauseReader; 
-   friend OMPVarListClause; 
-   friend TrailingObjects; 
-   
-   /// Build clause with number of variables \a N. 
-   /// 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param LParenLoc Location of '('. 
-   /// \param EndLoc Ending location of the clause. 
-   /// \param N Number of the variables in the clause. 
-   OMPCopyprivateClause(SourceLocation StartLoc, SourceLocation LParenLoc, 
-                        SourceLocation EndLoc, unsigned N) 
-       : OMPVarListClause<OMPCopyprivateClause>(llvm::omp::OMPC_copyprivate, 
-                                                StartLoc, LParenLoc, EndLoc, N) { 
-   } 
-   
-   /// Build an empty clause. 
-   /// 
-   /// \param N Number of variables. 
-   explicit OMPCopyprivateClause(unsigned N) 
-       : OMPVarListClause<OMPCopyprivateClause>( 
-             llvm::omp::OMPC_copyprivate, SourceLocation(), SourceLocation(), 
-             SourceLocation(), N) {} 
-   
-   /// Set list of helper expressions, required for proper codegen of the 
-   /// clause. These expressions represent source expression in the final 
-   /// assignment statement performed by the copyprivate clause. 
-   void setSourceExprs(ArrayRef<Expr *> SrcExprs); 
-   
-   /// Get the list of helper source expressions. 
-   MutableArrayRef<Expr *> getSourceExprs() { 
-     return MutableArrayRef<Expr *>(varlist_end(), varlist_size()); 
-   } 
-   ArrayRef<const Expr *> getSourceExprs() const { 
-     return llvm::ArrayRef(varlist_end(), varlist_size()); 
-   } 
-   
-   /// Set list of helper expressions, required for proper codegen of the 
-   /// clause. These expressions represent destination expression in the final 
-   /// assignment statement performed by the copyprivate clause. 
-   void setDestinationExprs(ArrayRef<Expr *> DstExprs); 
-   
-   /// Get the list of helper destination expressions. 
-   MutableArrayRef<Expr *> getDestinationExprs() { 
-     return MutableArrayRef<Expr *>(getSourceExprs().end(), varlist_size()); 
-   } 
-   ArrayRef<const Expr *> getDestinationExprs() const { 
-     return llvm::ArrayRef(getSourceExprs().end(), varlist_size()); 
-   } 
-   
-   /// Set list of helper assignment expressions, required for proper 
-   /// codegen of the clause. These expressions are assignment expressions that 
-   /// assign source helper expressions to destination helper expressions 
-   /// correspondingly. 
-   void setAssignmentOps(ArrayRef<Expr *> AssignmentOps); 
-   
-   /// Get the list of helper assignment expressions. 
-   MutableArrayRef<Expr *> getAssignmentOps() { 
-     return MutableArrayRef<Expr *>(getDestinationExprs().end(), varlist_size()); 
-   } 
-   ArrayRef<const Expr *> getAssignmentOps() const { 
-     return llvm::ArrayRef(getDestinationExprs().end(), varlist_size()); 
-   } 
-   
- public: 
-   /// Creates clause with a list of variables \a VL. 
-   /// 
-   /// \param C AST context. 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param LParenLoc Location of '('. 
-   /// \param EndLoc Ending location of the clause. 
-   /// \param VL List of references to the variables. 
-   /// \param SrcExprs List of helper expressions for proper generation of 
-   /// assignment operation required for copyprivate clause. This list represents 
-   /// sources. 
-   /// \param DstExprs List of helper expressions for proper generation of 
-   /// assignment operation required for copyprivate clause. This list represents 
-   /// destinations. 
-   /// \param AssignmentOps List of helper expressions that represents assignment 
-   /// operation: 
-   /// \code 
-   /// DstExprs = SrcExprs; 
-   /// \endcode 
-   /// Required for proper codegen of final assignment performed by the 
-   /// copyprivate clause. 
-   static OMPCopyprivateClause * 
-   Create(const ASTContext &C, SourceLocation StartLoc, SourceLocation LParenLoc, 
-          SourceLocation EndLoc, ArrayRef<Expr *> VL, ArrayRef<Expr *> SrcExprs, 
-          ArrayRef<Expr *> DstExprs, ArrayRef<Expr *> AssignmentOps); 
-   
-   /// Creates an empty clause with \a N variables. 
-   /// 
-   /// \param C AST context. 
-   /// \param N The number of variables. 
-   static OMPCopyprivateClause *CreateEmpty(const ASTContext &C, unsigned N); 
-   
-   using helper_expr_iterator = MutableArrayRef<Expr *>::iterator; 
-   using helper_expr_const_iterator = ArrayRef<const Expr *>::iterator; 
-   using helper_expr_range = llvm::iterator_range<helper_expr_iterator>; 
-   using helper_expr_const_range = 
-       llvm::iterator_range<helper_expr_const_iterator>; 
-   
-   helper_expr_const_range source_exprs() const { 
-     return helper_expr_const_range(getSourceExprs().begin(), 
-                                    getSourceExprs().end()); 
-   } 
-   
-   helper_expr_range source_exprs() { 
-     return helper_expr_range(getSourceExprs().begin(), getSourceExprs().end()); 
-   } 
-   
-   helper_expr_const_range destination_exprs() const { 
-     return helper_expr_const_range(getDestinationExprs().begin(), 
-                                    getDestinationExprs().end()); 
-   } 
-   
-   helper_expr_range destination_exprs() { 
-     return helper_expr_range(getDestinationExprs().begin(), 
-                              getDestinationExprs().end()); 
-   } 
-   
-   helper_expr_const_range assignment_ops() const { 
-     return helper_expr_const_range(getAssignmentOps().begin(), 
-                                    getAssignmentOps().end()); 
-   } 
-   
-   helper_expr_range assignment_ops() { 
-     return helper_expr_range(getAssignmentOps().begin(), 
-                              getAssignmentOps().end()); 
-   } 
-   
-   child_range children() { 
-     return child_range(reinterpret_cast<Stmt **>(varlist_begin()), 
-                        reinterpret_cast<Stmt **>(varlist_end())); 
-   } 
-   
-   const_child_range children() const { 
-     auto Children = const_cast<OMPCopyprivateClause *>(this)->children(); 
-     return const_child_range(Children.begin(), Children.end()); 
-   } 
-   
-   child_range used_children() { 
-     return child_range(child_iterator(), child_iterator()); 
-   } 
-   const_child_range used_children() const { 
-     return const_child_range(const_child_iterator(), const_child_iterator()); 
-   } 
-   
-   static bool classof(const OMPClause *T) { 
-     return T->getClauseKind() == llvm::omp::OMPC_copyprivate; 
-   } 
- }; 
-   
- /// This represents implicit clause 'flush' for the '#pragma omp flush' 
- /// directive. 
- /// This clause does not exist by itself, it can be only as a part of 'omp 
- /// flush' directive. This clause is introduced to keep the original structure 
- /// of \a OMPExecutableDirective class and its derivatives and to use the 
- /// existing infrastructure of clauses with the list of variables. 
- /// 
- /// \code 
- /// #pragma omp flush(a,b) 
- /// \endcode 
- /// In this example directive '#pragma omp flush' has implicit clause 'flush' 
- /// with the variables 'a' and 'b'. 
- class OMPFlushClause final 
-     : public OMPVarListClause<OMPFlushClause>, 
-       private llvm::TrailingObjects<OMPFlushClause, Expr *> { 
-   friend OMPVarListClause; 
-   friend TrailingObjects; 
-   
-   /// Build clause with number of variables \a N. 
-   /// 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param LParenLoc Location of '('. 
-   /// \param EndLoc Ending location of the clause. 
-   /// \param N Number of the variables in the clause. 
-   OMPFlushClause(SourceLocation StartLoc, SourceLocation LParenLoc, 
-                  SourceLocation EndLoc, unsigned N) 
-       : OMPVarListClause<OMPFlushClause>(llvm::omp::OMPC_flush, StartLoc, 
-                                          LParenLoc, EndLoc, N) {} 
-   
-   /// Build an empty clause. 
-   /// 
-   /// \param N Number of variables. 
-   explicit OMPFlushClause(unsigned N) 
-       : OMPVarListClause<OMPFlushClause>(llvm::omp::OMPC_flush, 
-                                          SourceLocation(), SourceLocation(), 
-                                          SourceLocation(), N) {} 
-   
- public: 
-   /// Creates clause with a list of variables \a VL. 
-   /// 
-   /// \param C AST context. 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param LParenLoc Location of '('. 
-   /// \param EndLoc Ending location of the clause. 
-   /// \param VL List of references to the variables. 
-   static OMPFlushClause *Create(const ASTContext &C, SourceLocation StartLoc, 
-                                 SourceLocation LParenLoc, SourceLocation EndLoc, 
-                                 ArrayRef<Expr *> VL); 
-   
-   /// Creates an empty clause with \a N variables. 
-   /// 
-   /// \param C AST context. 
-   /// \param N The number of variables. 
-   static OMPFlushClause *CreateEmpty(const ASTContext &C, unsigned N); 
-   
-   child_range children() { 
-     return child_range(reinterpret_cast<Stmt **>(varlist_begin()), 
-                        reinterpret_cast<Stmt **>(varlist_end())); 
-   } 
-   
-   const_child_range children() const { 
-     auto Children = const_cast<OMPFlushClause *>(this)->children(); 
-     return const_child_range(Children.begin(), Children.end()); 
-   } 
-   
-   child_range used_children() { 
-     return child_range(child_iterator(), child_iterator()); 
-   } 
-   const_child_range used_children() const { 
-     return const_child_range(const_child_iterator(), const_child_iterator()); 
-   } 
-   
-   static bool classof(const OMPClause *T) { 
-     return T->getClauseKind() == llvm::omp::OMPC_flush; 
-   } 
- }; 
-   
- /// This represents implicit clause 'depobj' for the '#pragma omp depobj' 
- /// directive. 
- /// This clause does not exist by itself, it can be only as a part of 'omp 
- /// depobj' directive. This clause is introduced to keep the original structure 
- /// of \a OMPExecutableDirective class and its derivatives and to use the 
- /// existing infrastructure of clauses with the list of variables. 
- /// 
- /// \code 
- /// #pragma omp depobj(a) destroy 
- /// \endcode 
- /// In this example directive '#pragma omp depobj' has implicit clause 'depobj' 
- /// with the depobj 'a'. 
- class OMPDepobjClause final : public OMPClause { 
-   friend class OMPClauseReader; 
-   
-   /// Location of '('. 
-   SourceLocation LParenLoc; 
-   
-   /// Chunk size. 
-   Expr *Depobj = nullptr; 
-   
-   /// Build clause with number of variables \a N. 
-   /// 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param LParenLoc Location of '('. 
-   /// \param EndLoc Ending location of the clause. 
-   OMPDepobjClause(SourceLocation StartLoc, SourceLocation LParenLoc, 
-                   SourceLocation EndLoc) 
-       : OMPClause(llvm::omp::OMPC_depobj, StartLoc, EndLoc), 
-         LParenLoc(LParenLoc) {} 
-   
-   /// Build an empty clause. 
-   /// 
-   explicit OMPDepobjClause() 
-       : OMPClause(llvm::omp::OMPC_depobj, SourceLocation(), SourceLocation()) {} 
-   
-   void setDepobj(Expr *E) { Depobj = E; } 
-   
-   /// Sets the location of '('. 
-   void setLParenLoc(SourceLocation Loc) { LParenLoc = Loc; } 
-   
- public: 
-   /// Creates clause. 
-   /// 
-   /// \param C AST context. 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param LParenLoc Location of '('. 
-   /// \param EndLoc Ending location of the clause. 
-   /// \param Depobj depobj expression associated with the 'depobj' directive. 
-   static OMPDepobjClause *Create(const ASTContext &C, SourceLocation StartLoc, 
-                                  SourceLocation LParenLoc, 
-                                  SourceLocation EndLoc, Expr *Depobj); 
-   
-   /// Creates an empty clause. 
-   /// 
-   /// \param C AST context. 
-   static OMPDepobjClause *CreateEmpty(const ASTContext &C); 
-   
-   /// Returns depobj expression associated with the clause. 
-   Expr *getDepobj() { return Depobj; } 
-   const Expr *getDepobj() const { return Depobj; } 
-   
-   /// Returns the location of '('. 
-   SourceLocation getLParenLoc() const { return LParenLoc; } 
-   
-   child_range children() { 
-     return child_range(reinterpret_cast<Stmt **>(&Depobj), 
-                        reinterpret_cast<Stmt **>(&Depobj) + 1); 
-   } 
-   
-   const_child_range children() const { 
-     auto Children = const_cast<OMPDepobjClause *>(this)->children(); 
-     return const_child_range(Children.begin(), Children.end()); 
-   } 
-   
-   child_range used_children() { 
-     return child_range(child_iterator(), child_iterator()); 
-   } 
-   const_child_range used_children() const { 
-     return const_child_range(const_child_iterator(), const_child_iterator()); 
-   } 
-   
-   static bool classof(const OMPClause *T) { 
-     return T->getClauseKind() == llvm::omp::OMPC_depobj; 
-   } 
- }; 
-   
- /// This represents implicit clause 'depend' for the '#pragma omp task' 
- /// directive. 
- /// 
- /// \code 
- /// #pragma omp task depend(in:a,b) 
- /// \endcode 
- /// In this example directive '#pragma omp task' with clause 'depend' with the 
- /// variables 'a' and 'b' with dependency 'in'. 
- class OMPDependClause final 
-     : public OMPVarListClause<OMPDependClause>, 
-       private llvm::TrailingObjects<OMPDependClause, Expr *> { 
-   friend class OMPClauseReader; 
-   friend OMPVarListClause; 
-   friend TrailingObjects; 
-   
- public: 
-   struct DependDataTy final { 
-     /// Dependency type (one of in, out, inout). 
-     OpenMPDependClauseKind DepKind = OMPC_DEPEND_unknown; 
-   
-     /// Dependency type location. 
-     SourceLocation DepLoc; 
-   
-     /// Colon location. 
-     SourceLocation ColonLoc; 
-   
-     /// Location of 'omp_all_memory'. 
-     SourceLocation OmpAllMemoryLoc; 
-   }; 
-   
- private: 
-   /// Dependency type and source locations. 
-   DependDataTy Data; 
-   
-   /// Number of loops, associated with the depend clause. 
-   unsigned NumLoops = 0; 
-   
-   /// Build clause with number of variables \a N. 
-   /// 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param LParenLoc Location of '('. 
-   /// \param EndLoc Ending location of the clause. 
-   /// \param N Number of the variables in the clause. 
-   /// \param NumLoops Number of loops that is associated with this depend 
-   /// clause. 
-   OMPDependClause(SourceLocation StartLoc, SourceLocation LParenLoc, 
-                   SourceLocation EndLoc, unsigned N, unsigned NumLoops) 
-       : OMPVarListClause<OMPDependClause>(llvm::omp::OMPC_depend, StartLoc, 
-                                           LParenLoc, EndLoc, N), 
-         NumLoops(NumLoops) {} 
-   
-   /// Build an empty clause. 
-   /// 
-   /// \param N Number of variables. 
-   /// \param NumLoops Number of loops that is associated with this depend 
-   /// clause. 
-   explicit OMPDependClause(unsigned N, unsigned NumLoops) 
-       : OMPVarListClause<OMPDependClause>(llvm::omp::OMPC_depend, 
-                                           SourceLocation(), SourceLocation(), 
-                                           SourceLocation(), N), 
-         NumLoops(NumLoops) {} 
-   
-   /// Set dependency kind. 
-   void setDependencyKind(OpenMPDependClauseKind K) { Data.DepKind = K; } 
-   
-   /// Set dependency kind and its location. 
-   void setDependencyLoc(SourceLocation Loc) { Data.DepLoc = Loc; } 
-   
-   /// Set colon location. 
-   void setColonLoc(SourceLocation Loc) { Data.ColonLoc = Loc; } 
-   
-   /// Set the 'omp_all_memory' location. 
-   void setOmpAllMemoryLoc(SourceLocation Loc) { Data.OmpAllMemoryLoc = Loc; } 
-   
-   /// Sets optional dependency modifier. 
-   void setModifier(Expr *DepModifier); 
-   
- public: 
-   /// Creates clause with a list of variables \a VL. 
-   /// 
-   /// \param C AST context. 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param LParenLoc Location of '('. 
-   /// \param EndLoc Ending location of the clause. 
-   /// \param Data Dependency type and source locations. 
-   /// \param VL List of references to the variables. 
-   /// \param NumLoops Number of loops that is associated with this depend 
-   /// clause. 
-   static OMPDependClause *Create(const ASTContext &C, SourceLocation StartLoc, 
-                                  SourceLocation LParenLoc, 
-                                  SourceLocation EndLoc, DependDataTy Data, 
-                                  Expr *DepModifier, ArrayRef<Expr *> VL, 
-                                  unsigned NumLoops); 
-   
-   /// Creates an empty clause with \a N variables. 
-   /// 
-   /// \param C AST context. 
-   /// \param N The number of variables. 
-   /// \param NumLoops Number of loops that is associated with this depend 
-   /// clause. 
-   static OMPDependClause *CreateEmpty(const ASTContext &C, unsigned N, 
-                                       unsigned NumLoops); 
-   
-   /// Get dependency type. 
-   OpenMPDependClauseKind getDependencyKind() const { return Data.DepKind; } 
-   
-   /// Get dependency type location. 
-   SourceLocation getDependencyLoc() const { return Data.DepLoc; } 
-   
-   /// Get colon location. 
-   SourceLocation getColonLoc() const { return Data.ColonLoc; } 
-   
-   /// Get 'omp_all_memory' location. 
-   SourceLocation getOmpAllMemoryLoc() const { return Data.OmpAllMemoryLoc; } 
-   
-   /// Return optional depend modifier. 
-   Expr *getModifier(); 
-   const Expr *getModifier() const { 
-     return const_cast<OMPDependClause *>(this)->getModifier(); 
-   } 
-   
-   /// Get number of loops associated with the clause. 
-   unsigned getNumLoops() const { return NumLoops; } 
-   
-   /// Set the loop data for the depend clauses with 'sink|source' kind of 
-   /// dependency. 
-   void setLoopData(unsigned NumLoop, Expr *Cnt); 
-   
-   /// Get the loop data. 
-   Expr *getLoopData(unsigned NumLoop); 
-   const Expr *getLoopData(unsigned NumLoop) const; 
-   
-   child_range children() { 
-     return child_range(reinterpret_cast<Stmt **>(varlist_begin()), 
-                        reinterpret_cast<Stmt **>(varlist_end())); 
-   } 
-   
-   const_child_range children() const { 
-     auto Children = const_cast<OMPDependClause *>(this)->children(); 
-     return const_child_range(Children.begin(), Children.end()); 
-   } 
-   
-   child_range used_children() { 
-     return child_range(child_iterator(), child_iterator()); 
-   } 
-   const_child_range used_children() const { 
-     return const_child_range(const_child_iterator(), const_child_iterator()); 
-   } 
-   
-   static bool classof(const OMPClause *T) { 
-     return T->getClauseKind() == llvm::omp::OMPC_depend; 
-   } 
- }; 
-   
- /// This represents 'device' clause in the '#pragma omp ...' 
- /// directive. 
- /// 
- /// \code 
- /// #pragma omp target device(a) 
- /// \endcode 
- /// In this example directive '#pragma omp target' has clause 'device' 
- /// with single expression 'a'. 
- class OMPDeviceClause : public OMPClause, public OMPClauseWithPreInit { 
-   friend class OMPClauseReader; 
-   
-   /// Location of '('. 
-   SourceLocation LParenLoc; 
-   
-   /// Device clause modifier. 
-   OpenMPDeviceClauseModifier Modifier = OMPC_DEVICE_unknown; 
-   
-   /// Location of the modifier. 
-   SourceLocation ModifierLoc; 
-   
-   /// Device number. 
-   Stmt *Device = nullptr; 
-   
-   /// Set the device number. 
-   /// 
-   /// \param E Device number. 
-   void setDevice(Expr *E) { Device = E; } 
-   
-   /// Sets modifier. 
-   void setModifier(OpenMPDeviceClauseModifier M) { Modifier = M; } 
-   
-   /// Setst modifier location. 
-   void setModifierLoc(SourceLocation Loc) { ModifierLoc = Loc; } 
-   
- public: 
-   /// Build 'device' clause. 
-   /// 
-   /// \param Modifier Clause modifier. 
-   /// \param E Expression associated with this clause. 
-   /// \param CaptureRegion Innermost OpenMP region where expressions in this 
-   /// clause must be captured. 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param ModifierLoc Modifier location. 
-   /// \param LParenLoc Location of '('. 
-   /// \param EndLoc Ending location of the clause. 
-   OMPDeviceClause(OpenMPDeviceClauseModifier Modifier, Expr *E, Stmt *HelperE, 
-                   OpenMPDirectiveKind CaptureRegion, SourceLocation StartLoc, 
-                   SourceLocation LParenLoc, SourceLocation ModifierLoc, 
-                   SourceLocation EndLoc) 
-       : OMPClause(llvm::omp::OMPC_device, StartLoc, EndLoc), 
-         OMPClauseWithPreInit(this), LParenLoc(LParenLoc), Modifier(Modifier), 
-         ModifierLoc(ModifierLoc), Device(E) { 
-     setPreInitStmt(HelperE, CaptureRegion); 
-   } 
-   
-   /// Build an empty clause. 
-   OMPDeviceClause() 
-       : OMPClause(llvm::omp::OMPC_device, SourceLocation(), SourceLocation()), 
-         OMPClauseWithPreInit(this) {} 
-   
-   /// Sets the location of '('. 
-   void setLParenLoc(SourceLocation Loc) { LParenLoc = Loc; } 
-   
-   /// Returns the location of '('. 
-   SourceLocation getLParenLoc() const { return LParenLoc; } 
-   
-   /// Return device number. 
-   Expr *getDevice() { return cast<Expr>(Device); } 
-   
-   /// Return device number. 
-   Expr *getDevice() const { return cast<Expr>(Device); } 
-   
-   /// Gets modifier. 
-   OpenMPDeviceClauseModifier getModifier() const { return Modifier; } 
-   
-   /// Gets modifier location. 
-   SourceLocation getModifierLoc() const { return ModifierLoc; } 
-   
-   child_range children() { return child_range(&Device, &Device + 1); } 
-   
-   const_child_range children() const { 
-     return const_child_range(&Device, &Device + 1); 
-   } 
-   
-   child_range used_children() { 
-     return child_range(child_iterator(), child_iterator()); 
-   } 
-   const_child_range used_children() const { 
-     return const_child_range(const_child_iterator(), const_child_iterator()); 
-   } 
-   
-   static bool classof(const OMPClause *T) { 
-     return T->getClauseKind() == llvm::omp::OMPC_device; 
-   } 
- }; 
-   
- /// This represents 'threads' clause in the '#pragma omp ...' directive. 
- /// 
- /// \code 
- /// #pragma omp ordered threads 
- /// \endcode 
- /// In this example directive '#pragma omp ordered' has simple 'threads' clause. 
- class OMPThreadsClause final 
-     : public OMPNoChildClause<llvm::omp::OMPC_threads> { 
- public: 
-   /// Build 'threads' clause. 
-   /// 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param EndLoc Ending location of the clause. 
-   OMPThreadsClause(SourceLocation StartLoc, SourceLocation EndLoc) 
-       : OMPNoChildClause(StartLoc, EndLoc) {} 
-   
-   /// Build an empty clause. 
-   OMPThreadsClause() : OMPNoChildClause() {} 
- }; 
-   
- /// This represents 'simd' clause in the '#pragma omp ...' directive. 
- /// 
- /// \code 
- /// #pragma omp ordered simd 
- /// \endcode 
- /// In this example directive '#pragma omp ordered' has simple 'simd' clause. 
- class OMPSIMDClause : public OMPClause { 
- public: 
-   /// Build 'simd' clause. 
-   /// 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param EndLoc Ending location of the clause. 
-   OMPSIMDClause(SourceLocation StartLoc, SourceLocation EndLoc) 
-       : OMPClause(llvm::omp::OMPC_simd, StartLoc, EndLoc) {} 
-   
-   /// Build an empty clause. 
-   OMPSIMDClause() 
-       : OMPClause(llvm::omp::OMPC_simd, SourceLocation(), SourceLocation()) {} 
-   
-   child_range children() { 
-     return child_range(child_iterator(), child_iterator()); 
-   } 
-   
-   const_child_range children() const { 
-     return const_child_range(const_child_iterator(), const_child_iterator()); 
-   } 
-   
-   child_range used_children() { 
-     return child_range(child_iterator(), child_iterator()); 
-   } 
-   const_child_range used_children() const { 
-     return const_child_range(const_child_iterator(), const_child_iterator()); 
-   } 
-   
-   static bool classof(const OMPClause *T) { 
-     return T->getClauseKind() == llvm::omp::OMPC_simd; 
-   } 
- }; 
-   
- /// Struct that defines common infrastructure to handle mappable 
- /// expressions used in OpenMP clauses. 
- class OMPClauseMappableExprCommon { 
- public: 
-   /// Class that represents a component of a mappable expression. E.g. 
-   /// for an expression S.a, the first component is a declaration reference 
-   /// expression associated with 'S' and the second is a member expression 
-   /// associated with the field declaration 'a'. If the expression is an array 
-   /// subscript it may not have any associated declaration. In that case the 
-   /// associated declaration is set to nullptr. 
-   class MappableComponent { 
-     /// Pair of Expression and Non-contiguous pair  associated with the 
-     /// component. 
-     llvm::PointerIntPair<Expr *, 1, bool> AssociatedExpressionNonContiguousPr; 
-   
-     /// Declaration associated with the declaration. If the component does 
-     /// not have a declaration (e.g. array subscripts or section), this is set 
-     /// to nullptr. 
-     ValueDecl *AssociatedDeclaration = nullptr; 
-   
-   public: 
-     explicit MappableComponent() = default; 
-     explicit MappableComponent(Expr *AssociatedExpression, 
-                                ValueDecl *AssociatedDeclaration, 
-                                bool IsNonContiguous) 
-         : AssociatedExpressionNonContiguousPr(AssociatedExpression, 
-                                               IsNonContiguous), 
-           AssociatedDeclaration( 
-               AssociatedDeclaration 
-                   ? cast<ValueDecl>(AssociatedDeclaration->getCanonicalDecl()) 
-                   : nullptr) {} 
-   
-     Expr *getAssociatedExpression() const { 
-       return AssociatedExpressionNonContiguousPr.getPointer(); 
-     } 
-   
-     bool isNonContiguous() const { 
-       return AssociatedExpressionNonContiguousPr.getInt(); 
-     } 
-   
-     ValueDecl *getAssociatedDeclaration() const { 
-       return AssociatedDeclaration; 
-     } 
-   }; 
-   
-   // List of components of an expression. This first one is the whole 
-   // expression and the last one is the base expression. 
-   using MappableExprComponentList = SmallVector<MappableComponent, 8>; 
-   using MappableExprComponentListRef = ArrayRef<MappableComponent>; 
-   
-   // List of all component lists associated to the same base declaration. 
-   // E.g. if both 'S.a' and 'S.b' are a mappable expressions, each will have 
-   // their component list but the same base declaration 'S'. 
-   using MappableExprComponentLists = SmallVector<MappableExprComponentList, 8>; 
-   using MappableExprComponentListsRef = ArrayRef<MappableExprComponentList>; 
-   
- protected: 
-   // Return the total number of elements in a list of component lists. 
-   static unsigned 
-   getComponentsTotalNumber(MappableExprComponentListsRef ComponentLists); 
-   
-   // Return the total number of elements in a list of declarations. All 
-   // declarations are expected to be canonical. 
-   static unsigned 
-   getUniqueDeclarationsTotalNumber(ArrayRef<const ValueDecl *> Declarations); 
- }; 
-   
- /// This structure contains all sizes needed for by an 
- /// OMPMappableExprListClause. 
- struct OMPMappableExprListSizeTy { 
-   /// Number of expressions listed. 
-   unsigned NumVars; 
-   /// Number of unique base declarations. 
-   unsigned NumUniqueDeclarations; 
-   /// Number of component lists. 
-   unsigned NumComponentLists; 
-   /// Total number of expression components. 
-   unsigned NumComponents; 
-   OMPMappableExprListSizeTy() = default; 
-   OMPMappableExprListSizeTy(unsigned NumVars, unsigned NumUniqueDeclarations, 
-                             unsigned NumComponentLists, unsigned NumComponents) 
-       : NumVars(NumVars), NumUniqueDeclarations(NumUniqueDeclarations), 
-         NumComponentLists(NumComponentLists), NumComponents(NumComponents) {} 
- }; 
-   
- /// This represents clauses with a list of expressions that are mappable. 
- /// Examples of these clauses are 'map' in 
- /// '#pragma omp target [enter|exit] [data]...' directives, and  'to' and 'from 
- /// in '#pragma omp target update...' directives. 
- template <class T> 
- class OMPMappableExprListClause : public OMPVarListClause<T>, 
-                                   public OMPClauseMappableExprCommon { 
-   friend class OMPClauseReader; 
-   
-   /// Number of unique declarations in this clause. 
-   unsigned NumUniqueDeclarations; 
-   
-   /// Number of component lists in this clause. 
-   unsigned NumComponentLists; 
-   
-   /// Total number of components in this clause. 
-   unsigned NumComponents; 
-   
-   /// Whether this clause is possible to have user-defined mappers associated. 
-   /// It should be true for map, to, and from clauses, and false for 
-   /// use_device_ptr and is_device_ptr. 
-   const bool SupportsMapper; 
-   
-   /// C++ nested name specifier for the associated user-defined mapper. 
-   NestedNameSpecifierLoc MapperQualifierLoc; 
-   
-   /// The associated user-defined mapper identifier information. 
-   DeclarationNameInfo MapperIdInfo; 
-   
- protected: 
-   /// Build a clause for \a NumUniqueDeclarations declarations, \a 
-   /// NumComponentLists total component lists, and \a NumComponents total 
-   /// components. 
-   /// 
-   /// \param K Kind of the clause. 
-   /// \param Locs Locations needed to build a mappable clause. It includes 1) 
-   /// StartLoc: starting location of the clause (the clause keyword); 2) 
-   /// LParenLoc: location of '('; 3) EndLoc: ending location of the clause. 
-   /// \param Sizes All required sizes to build a mappable clause. It includes 1) 
-   /// NumVars: number of expressions listed in this clause; 2) 
-   /// NumUniqueDeclarations: number of unique base declarations in this clause; 
-   /// 3) NumComponentLists: number of component lists in this clause; and 4) 
-   /// NumComponents: total number of expression components in the clause. 
-   /// \param SupportsMapper Indicates whether this clause is possible to have 
-   /// user-defined mappers associated. 
-   /// \param MapperQualifierLocPtr C++ nested name specifier for the associated 
-   /// user-defined mapper. 
-   /// \param MapperIdInfoPtr The identifier of associated user-defined mapper. 
-   OMPMappableExprListClause( 
-       OpenMPClauseKind K, const OMPVarListLocTy &Locs, 
-       const OMPMappableExprListSizeTy &Sizes, bool SupportsMapper = false, 
-       NestedNameSpecifierLoc *MapperQualifierLocPtr = nullptr, 
-       DeclarationNameInfo *MapperIdInfoPtr = nullptr) 
-       : OMPVarListClause<T>(K, Locs.StartLoc, Locs.LParenLoc, Locs.EndLoc, 
-                             Sizes.NumVars), 
-         NumUniqueDeclarations(Sizes.NumUniqueDeclarations), 
-         NumComponentLists(Sizes.NumComponentLists), 
-         NumComponents(Sizes.NumComponents), SupportsMapper(SupportsMapper) { 
-     if (MapperQualifierLocPtr) 
-       MapperQualifierLoc = *MapperQualifierLocPtr; 
-     if (MapperIdInfoPtr) 
-       MapperIdInfo = *MapperIdInfoPtr; 
-   } 
-   
-   /// Get the unique declarations that are in the trailing objects of the 
-   /// class. 
-   MutableArrayRef<ValueDecl *> getUniqueDeclsRef() { 
-     return MutableArrayRef<ValueDecl *>( 
-         static_cast<T *>(this)->template getTrailingObjects<ValueDecl *>(), 
-         NumUniqueDeclarations); 
-   } 
-   
-   /// Get the unique declarations that are in the trailing objects of the 
-   /// class. 
-   ArrayRef<ValueDecl *> getUniqueDeclsRef() const { 
-     return ArrayRef<ValueDecl *>( 
-         static_cast<const T *>(this) 
-             ->template getTrailingObjects<ValueDecl *>(), 
-         NumUniqueDeclarations); 
-   } 
-   
-   /// Set the unique declarations that are in the trailing objects of the 
-   /// class. 
-   void setUniqueDecls(ArrayRef<ValueDecl *> UDs) { 
-     assert(UDs.size() == NumUniqueDeclarations && 
-            "Unexpected amount of unique declarations."); 
-     std::copy(UDs.begin(), UDs.end(), getUniqueDeclsRef().begin()); 
-   } 
-   
-   /// Get the number of lists per declaration that are in the trailing 
-   /// objects of the class. 
-   MutableArrayRef<unsigned> getDeclNumListsRef() { 
-     return MutableArrayRef<unsigned>( 
-         static_cast<T *>(this)->template getTrailingObjects<unsigned>(), 
-         NumUniqueDeclarations); 
-   } 
-   
-   /// Get the number of lists per declaration that are in the trailing 
-   /// objects of the class. 
-   ArrayRef<unsigned> getDeclNumListsRef() const { 
-     return ArrayRef<unsigned>( 
-         static_cast<const T *>(this)->template getTrailingObjects<unsigned>(), 
-         NumUniqueDeclarations); 
-   } 
-   
-   /// Set the number of lists per declaration that are in the trailing 
-   /// objects of the class. 
-   void setDeclNumLists(ArrayRef<unsigned> DNLs) { 
-     assert(DNLs.size() == NumUniqueDeclarations && 
-            "Unexpected amount of list numbers."); 
-     std::copy(DNLs.begin(), DNLs.end(), getDeclNumListsRef().begin()); 
-   } 
-   
-   /// Get the cumulative component lists sizes that are in the trailing 
-   /// objects of the class. They are appended after the number of lists. 
-   MutableArrayRef<unsigned> getComponentListSizesRef() { 
-     return MutableArrayRef<unsigned>( 
-         static_cast<T *>(this)->template getTrailingObjects<unsigned>() + 
-             NumUniqueDeclarations, 
-         NumComponentLists); 
-   } 
-   
-   /// Get the cumulative component lists sizes that are in the trailing 
-   /// objects of the class. They are appended after the number of lists. 
-   ArrayRef<unsigned> getComponentListSizesRef() const { 
-     return ArrayRef<unsigned>( 
-         static_cast<const T *>(this)->template getTrailingObjects<unsigned>() + 
-             NumUniqueDeclarations, 
-         NumComponentLists); 
-   } 
-   
-   /// Set the cumulative component lists sizes that are in the trailing 
-   /// objects of the class. 
-   void setComponentListSizes(ArrayRef<unsigned> CLSs) { 
-     assert(CLSs.size() == NumComponentLists && 
-            "Unexpected amount of component lists."); 
-     std::copy(CLSs.begin(), CLSs.end(), getComponentListSizesRef().begin()); 
-   } 
-   
-   /// Get the components that are in the trailing objects of the class. 
-   MutableArrayRef<MappableComponent> getComponentsRef() { 
-     return MutableArrayRef<MappableComponent>( 
-         static_cast<T *>(this) 
-             ->template getTrailingObjects<MappableComponent>(), 
-         NumComponents); 
-   } 
-   
-   /// Get the components that are in the trailing objects of the class. 
-   ArrayRef<MappableComponent> getComponentsRef() const { 
-     return ArrayRef<MappableComponent>( 
-         static_cast<const T *>(this) 
-             ->template getTrailingObjects<MappableComponent>(), 
-         NumComponents); 
-   } 
-   
-   /// Set the components that are in the trailing objects of the class. 
-   /// This requires the list sizes so that it can also fill the original 
-   /// expressions, which are the first component of each list. 
-   void setComponents(ArrayRef<MappableComponent> Components, 
-                      ArrayRef<unsigned> CLSs) { 
-     assert(Components.size() == NumComponents && 
-            "Unexpected amount of component lists."); 
-     assert(CLSs.size() == NumComponentLists && 
-            "Unexpected amount of list sizes."); 
-     std::copy(Components.begin(), Components.end(), getComponentsRef().begin()); 
-   } 
-   
-   /// Fill the clause information from the list of declarations and 
-   /// associated component lists. 
-   void setClauseInfo(ArrayRef<ValueDecl *> Declarations, 
-                      MappableExprComponentListsRef ComponentLists) { 
-     // Perform some checks to make sure the data sizes are consistent with the 
-     // information available when the clause was created. 
-     assert(getUniqueDeclarationsTotalNumber(Declarations) == 
-                NumUniqueDeclarations && 
-            "Unexpected number of mappable expression info entries!"); 
-     assert(getComponentsTotalNumber(ComponentLists) == NumComponents && 
-            "Unexpected total number of components!"); 
-     assert(Declarations.size() == ComponentLists.size() && 
-            "Declaration and component lists size is not consistent!"); 
-     assert(Declarations.size() == NumComponentLists && 
-            "Unexpected declaration and component lists size!"); 
-   
-     // Organize the components by declaration and retrieve the original 
-     // expression. Original expressions are always the first component of the 
-     // mappable component list. 
-     llvm::MapVector<ValueDecl *, SmallVector<MappableExprComponentListRef, 8>> 
-         ComponentListMap; 
-     { 
-       auto CI = ComponentLists.begin(); 
-       for (auto DI = Declarations.begin(), DE = Declarations.end(); DI != DE; 
-            ++DI, ++CI) { 
-         assert(!CI->empty() && "Invalid component list!"); 
-         ComponentListMap[*DI].push_back(*CI); 
-       } 
-     } 
-   
-     // Iterators of the target storage. 
-     auto UniqueDeclarations = getUniqueDeclsRef(); 
-     auto UDI = UniqueDeclarations.begin(); 
-   
-     auto DeclNumLists = getDeclNumListsRef(); 
-     auto DNLI = DeclNumLists.begin(); 
-   
-     auto ComponentListSizes = getComponentListSizesRef(); 
-     auto CLSI = ComponentListSizes.begin(); 
-   
-     auto Components = getComponentsRef(); 
-     auto CI = Components.begin(); 
-   
-     // Variable to compute the accumulation of the number of components. 
-     unsigned PrevSize = 0u; 
-   
-     // Scan all the declarations and associated component lists. 
-     for (auto &M : ComponentListMap) { 
-       // The declaration. 
-       auto *D = M.first; 
-       // The component lists. 
-       auto CL = M.second; 
-   
-       // Initialize the entry. 
-       *UDI = D; 
-       ++UDI; 
-   
-       *DNLI = CL.size(); 
-       ++DNLI; 
-   
-       // Obtain the cumulative sizes and concatenate all the components in the 
-       // reserved storage. 
-       for (auto C : CL) { 
-         // Accumulate with the previous size. 
-         PrevSize += C.size(); 
-   
-         // Save the size. 
-         *CLSI = PrevSize; 
-         ++CLSI; 
-   
-         // Append components after the current components iterator. 
-         CI = std::copy(C.begin(), C.end(), CI); 
-       } 
-     } 
-   } 
-   
-   /// Set the nested name specifier of associated user-defined mapper. 
-   void setMapperQualifierLoc(NestedNameSpecifierLoc NNSL) { 
-     MapperQualifierLoc = NNSL; 
-   } 
-   
-   /// Set the name of associated user-defined mapper. 
-   void setMapperIdInfo(DeclarationNameInfo MapperId) { 
-     MapperIdInfo = MapperId; 
-   } 
-   
-   /// Get the user-defined mapper references that are in the trailing objects of 
-   /// the class. 
-   MutableArrayRef<Expr *> getUDMapperRefs() { 
-     assert(SupportsMapper && 
-            "Must be a clause that is possible to have user-defined mappers"); 
-     return llvm::MutableArrayRef<Expr *>( 
-         static_cast<T *>(this)->template getTrailingObjects<Expr *>() + 
-             OMPVarListClause<T>::varlist_size(), 
-         OMPVarListClause<T>::varlist_size()); 
-   } 
-   
-   /// Get the user-defined mappers references that are in the trailing objects 
-   /// of the class. 
-   ArrayRef<Expr *> getUDMapperRefs() const { 
-     assert(SupportsMapper && 
-            "Must be a clause that is possible to have user-defined mappers"); 
-     return llvm::ArrayRef<Expr *>( 
-         static_cast<const T *>(this)->template getTrailingObjects<Expr *>() + 
-             OMPVarListClause<T>::varlist_size(), 
-         OMPVarListClause<T>::varlist_size()); 
-   } 
-   
-   /// Set the user-defined mappers that are in the trailing objects of the 
-   /// class. 
-   void setUDMapperRefs(ArrayRef<Expr *> DMDs) { 
-     assert(DMDs.size() == OMPVarListClause<T>::varlist_size() && 
-            "Unexpected number of user-defined mappers."); 
-     assert(SupportsMapper && 
-            "Must be a clause that is possible to have user-defined mappers"); 
-     std::copy(DMDs.begin(), DMDs.end(), getUDMapperRefs().begin()); 
-   } 
-   
- public: 
-   /// Return the number of unique base declarations in this clause. 
-   unsigned getUniqueDeclarationsNum() const { return NumUniqueDeclarations; } 
-   
-   /// Return the number of lists derived from the clause expressions. 
-   unsigned getTotalComponentListNum() const { return NumComponentLists; } 
-   
-   /// Return the total number of components in all lists derived from the 
-   /// clause. 
-   unsigned getTotalComponentsNum() const { return NumComponents; } 
-   
-   /// Gets the nested name specifier for associated user-defined mapper. 
-   NestedNameSpecifierLoc getMapperQualifierLoc() const { 
-     return MapperQualifierLoc; 
-   } 
-   
-   /// Gets the name info for associated user-defined mapper. 
-   const DeclarationNameInfo &getMapperIdInfo() const { return MapperIdInfo; } 
-   
-   /// Iterator that browse the components by lists. It also allows 
-   /// browsing components of a single declaration. 
-   class const_component_lists_iterator 
-       : public llvm::iterator_adaptor_base< 
-             const_component_lists_iterator, 
-             MappableExprComponentListRef::const_iterator, 
-             std::forward_iterator_tag, MappableComponent, ptrdiff_t, 
-             MappableComponent, MappableComponent> { 
-     // The declaration the iterator currently refers to. 
-     ArrayRef<ValueDecl *>::iterator DeclCur; 
-   
-     // The list number associated with the current declaration. 
-     ArrayRef<unsigned>::iterator NumListsCur; 
-   
-     // Whether this clause is possible to have user-defined mappers associated. 
-     const bool SupportsMapper; 
-   
-     // The user-defined mapper associated with the current declaration. 
-     ArrayRef<Expr *>::iterator MapperCur; 
-   
-     // Remaining lists for the current declaration. 
-     unsigned RemainingLists = 0; 
-   
-     // The cumulative size of the previous list, or zero if there is no previous 
-     // list. 
-     unsigned PrevListSize = 0; 
-   
-     // The cumulative sizes of the current list - it will delimit the remaining 
-     // range of interest. 
-     ArrayRef<unsigned>::const_iterator ListSizeCur; 
-     ArrayRef<unsigned>::const_iterator ListSizeEnd; 
-   
-     // Iterator to the end of the components storage. 
-     MappableExprComponentListRef::const_iterator End; 
-   
-   public: 
-     /// Construct an iterator that scans all lists. 
-     explicit const_component_lists_iterator( 
-         ArrayRef<ValueDecl *> UniqueDecls, ArrayRef<unsigned> DeclsListNum, 
-         ArrayRef<unsigned> CumulativeListSizes, 
-         MappableExprComponentListRef Components, bool SupportsMapper, 
-         ArrayRef<Expr *> Mappers) 
-         : const_component_lists_iterator::iterator_adaptor_base( 
-               Components.begin()), 
-           DeclCur(UniqueDecls.begin()), NumListsCur(DeclsListNum.begin()), 
-           SupportsMapper(SupportsMapper), 
-           ListSizeCur(CumulativeListSizes.begin()), 
-           ListSizeEnd(CumulativeListSizes.end()), End(Components.end()) { 
-       assert(UniqueDecls.size() == DeclsListNum.size() && 
-              "Inconsistent number of declarations and list sizes!"); 
-       if (!DeclsListNum.empty()) 
-         RemainingLists = *NumListsCur; 
-       if (SupportsMapper) 
-         MapperCur = Mappers.begin(); 
-     } 
-   
-     /// Construct an iterator that scan lists for a given declaration \a 
-     /// Declaration. 
-     explicit const_component_lists_iterator( 
-         const ValueDecl *Declaration, ArrayRef<ValueDecl *> UniqueDecls, 
-         ArrayRef<unsigned> DeclsListNum, ArrayRef<unsigned> CumulativeListSizes, 
-         MappableExprComponentListRef Components, bool SupportsMapper, 
-         ArrayRef<Expr *> Mappers) 
-         : const_component_lists_iterator(UniqueDecls, DeclsListNum, 
-                                          CumulativeListSizes, Components, 
-                                          SupportsMapper, Mappers) { 
-       // Look for the desired declaration. While we are looking for it, we 
-       // update the state so that we know the component where a given list 
-       // starts. 
-       for (; DeclCur != UniqueDecls.end(); ++DeclCur, ++NumListsCur) { 
-         if (*DeclCur == Declaration) 
-           break; 
-   
-         assert(*NumListsCur > 0 && "No lists associated with declaration??"); 
-   
-         // Skip the lists associated with the current declaration, but save the 
-         // last list size that was skipped. 
-         std::advance(ListSizeCur, *NumListsCur - 1); 
-         PrevListSize = *ListSizeCur; 
-         ++ListSizeCur; 
-   
-         if (SupportsMapper) 
-           ++MapperCur; 
-       } 
-   
-       // If we didn't find any declaration, advance the iterator to after the 
-       // last component and set remaining lists to zero. 
-       if (ListSizeCur == CumulativeListSizes.end()) { 
-         this->I = End; 
-         RemainingLists = 0u; 
-         return; 
-       } 
-   
-       // Set the remaining lists with the total number of lists of the current 
-       // declaration. 
-       RemainingLists = *NumListsCur; 
-   
-       // Adjust the list size end iterator to the end of the relevant range. 
-       ListSizeEnd = ListSizeCur; 
-       std::advance(ListSizeEnd, RemainingLists); 
-   
-       // Given that the list sizes are cumulative, the index of the component 
-       // that start the list is the size of the previous list. 
-       std::advance(this->I, PrevListSize); 
-     } 
-   
-     // Return the array with the current list. The sizes are cumulative, so the 
-     // array size is the difference between the current size and previous one. 
-     std::tuple<const ValueDecl *, MappableExprComponentListRef, 
-                const ValueDecl *> 
-     operator*() const { 
-       assert(ListSizeCur != ListSizeEnd && "Invalid iterator!"); 
-       const ValueDecl *Mapper = nullptr; 
-       if (SupportsMapper && *MapperCur) 
-         Mapper = cast<ValueDecl>(cast<DeclRefExpr>(*MapperCur)->getDecl()); 
-       return std::make_tuple( 
-           *DeclCur, 
-           MappableExprComponentListRef(&*this->I, *ListSizeCur - PrevListSize), 
-           Mapper); 
-     } 
-     std::tuple<const ValueDecl *, MappableExprComponentListRef, 
-                const ValueDecl *> 
-     operator->() const { 
-       return **this; 
-     } 
-   
-     // Skip the components of the current list. 
-     const_component_lists_iterator &operator++() { 
-       assert(ListSizeCur != ListSizeEnd && RemainingLists && 
-              "Invalid iterator!"); 
-   
-       // If we don't have more lists just skip all the components. Otherwise, 
-       // advance the iterator by the number of components in the current list. 
-       if (std::next(ListSizeCur) == ListSizeEnd) { 
-         this->I = End; 
-         RemainingLists = 0; 
-       } else { 
-         std::advance(this->I, *ListSizeCur - PrevListSize); 
-         PrevListSize = *ListSizeCur; 
-   
-         // We are done with a declaration, move to the next one. 
-         if (!(--RemainingLists)) { 
-           ++DeclCur; 
-           ++NumListsCur; 
-           RemainingLists = *NumListsCur; 
-           assert(RemainingLists && "No lists in the following declaration??"); 
-         } 
-       } 
-   
-       ++ListSizeCur; 
-       if (SupportsMapper) 
-         ++MapperCur; 
-       return *this; 
-     } 
-   }; 
-   
-   using const_component_lists_range = 
-       llvm::iterator_range<const_component_lists_iterator>; 
-   
-   /// Iterators for all component lists. 
-   const_component_lists_iterator component_lists_begin() const { 
-     return const_component_lists_iterator( 
-         getUniqueDeclsRef(), getDeclNumListsRef(), getComponentListSizesRef(), 
-         getComponentsRef(), SupportsMapper, 
-         SupportsMapper ? getUDMapperRefs() : std::nullopt); 
-   } 
-   const_component_lists_iterator component_lists_end() const { 
-     return const_component_lists_iterator( 
-         ArrayRef<ValueDecl *>(), ArrayRef<unsigned>(), ArrayRef<unsigned>(), 
-         MappableExprComponentListRef(getComponentsRef().end(), 
-                                      getComponentsRef().end()), 
-         SupportsMapper, std::nullopt); 
-   } 
-   const_component_lists_range component_lists() const { 
-     return {component_lists_begin(), component_lists_end()}; 
-   } 
-   
-   /// Iterators for component lists associated with the provided 
-   /// declaration. 
-   const_component_lists_iterator 
-   decl_component_lists_begin(const ValueDecl *VD) const { 
-     return const_component_lists_iterator( 
-         VD, getUniqueDeclsRef(), getDeclNumListsRef(), 
-         getComponentListSizesRef(), getComponentsRef(), SupportsMapper, 
-         SupportsMapper ? getUDMapperRefs() : std::nullopt); 
-   } 
-   const_component_lists_iterator decl_component_lists_end() const { 
-     return component_lists_end(); 
-   } 
-   const_component_lists_range decl_component_lists(const ValueDecl *VD) const { 
-     return {decl_component_lists_begin(VD), decl_component_lists_end()}; 
-   } 
-   
-   /// Iterators to access all the declarations, number of lists, list sizes, and 
-   /// components. 
-   using const_all_decls_iterator = ArrayRef<ValueDecl *>::iterator; 
-   using const_all_decls_range = llvm::iterator_range<const_all_decls_iterator>; 
-   
-   const_all_decls_range all_decls() const { 
-     auto A = getUniqueDeclsRef(); 
-     return const_all_decls_range(A.begin(), A.end()); 
-   } 
-   
-   using const_all_num_lists_iterator = ArrayRef<unsigned>::iterator; 
-   using const_all_num_lists_range = 
-       llvm::iterator_range<const_all_num_lists_iterator>; 
-   
-   const_all_num_lists_range all_num_lists() const { 
-     auto A = getDeclNumListsRef(); 
-     return const_all_num_lists_range(A.begin(), A.end()); 
-   } 
-   
-   using const_all_lists_sizes_iterator = ArrayRef<unsigned>::iterator; 
-   using const_all_lists_sizes_range = 
-       llvm::iterator_range<const_all_lists_sizes_iterator>; 
-   
-   const_all_lists_sizes_range all_lists_sizes() const { 
-     auto A = getComponentListSizesRef(); 
-     return const_all_lists_sizes_range(A.begin(), A.end()); 
-   } 
-   
-   using const_all_components_iterator = ArrayRef<MappableComponent>::iterator; 
-   using const_all_components_range = 
-       llvm::iterator_range<const_all_components_iterator>; 
-   
-   const_all_components_range all_components() const { 
-     auto A = getComponentsRef(); 
-     return const_all_components_range(A.begin(), A.end()); 
-   } 
-   
-   using mapperlist_iterator = MutableArrayRef<Expr *>::iterator; 
-   using mapperlist_const_iterator = ArrayRef<const Expr *>::iterator; 
-   using mapperlist_range = llvm::iterator_range<mapperlist_iterator>; 
-   using mapperlist_const_range = 
-       llvm::iterator_range<mapperlist_const_iterator>; 
-   
-   mapperlist_iterator mapperlist_begin() { return getUDMapperRefs().begin(); } 
-   mapperlist_iterator mapperlist_end() { return getUDMapperRefs().end(); } 
-   mapperlist_const_iterator mapperlist_begin() const { 
-     return getUDMapperRefs().begin(); 
-   } 
-   mapperlist_const_iterator mapperlist_end() const { 
-     return getUDMapperRefs().end(); 
-   } 
-   mapperlist_range mapperlists() { 
-     return mapperlist_range(mapperlist_begin(), mapperlist_end()); 
-   } 
-   mapperlist_const_range mapperlists() const { 
-     return mapperlist_const_range(mapperlist_begin(), mapperlist_end()); 
-   } 
- }; 
-   
- /// This represents clause 'map' in the '#pragma omp ...' 
- /// directives. 
- /// 
- /// \code 
- /// #pragma omp target map(a,b) 
- /// \endcode 
- /// In this example directive '#pragma omp target' has clause 'map' 
- /// with the variables 'a' and 'b'. 
- class OMPMapClause final : public OMPMappableExprListClause<OMPMapClause>, 
-                            private llvm::TrailingObjects< 
-                                OMPMapClause, Expr *, ValueDecl *, unsigned, 
-                                OMPClauseMappableExprCommon::MappableComponent> { 
-   friend class OMPClauseReader; 
-   friend OMPMappableExprListClause; 
-   friend OMPVarListClause; 
-   friend TrailingObjects; 
-   
-   /// Define the sizes of each trailing object array except the last one. This 
-   /// is required for TrailingObjects to work properly. 
-   size_t numTrailingObjects(OverloadToken<Expr *>) const { 
-     // There are varlist_size() of expressions, and varlist_size() of 
-     // user-defined mappers. 
-     return 2 * varlist_size() + 1; 
-   } 
-   size_t numTrailingObjects(OverloadToken<ValueDecl *>) const { 
-     return getUniqueDeclarationsNum(); 
-   } 
-   size_t numTrailingObjects(OverloadToken<unsigned>) const { 
-     return getUniqueDeclarationsNum() + getTotalComponentListNum(); 
-   } 
-   
- private: 
-   /// Map-type-modifiers for the 'map' clause. 
-   OpenMPMapModifierKind MapTypeModifiers[NumberOfOMPMapClauseModifiers] = { 
-       OMPC_MAP_MODIFIER_unknown, OMPC_MAP_MODIFIER_unknown, 
-       OMPC_MAP_MODIFIER_unknown, OMPC_MAP_MODIFIER_unknown, 
-       OMPC_MAP_MODIFIER_unknown, OMPC_MAP_MODIFIER_unknown}; 
-   
-   /// Location of map-type-modifiers for the 'map' clause. 
-   SourceLocation MapTypeModifiersLoc[NumberOfOMPMapClauseModifiers]; 
-   
-   /// Map type for the 'map' clause. 
-   OpenMPMapClauseKind MapType = OMPC_MAP_unknown; 
-   
-   /// Is this an implicit map type or not. 
-   bool MapTypeIsImplicit = false; 
-   
-   /// Location of the map type. 
-   SourceLocation MapLoc; 
-   
-   /// Colon location. 
-   SourceLocation ColonLoc; 
-   
-   /// Build a clause for \a NumVars listed expressions, \a 
-   /// NumUniqueDeclarations declarations, \a NumComponentLists total component 
-   /// lists, and \a NumComponents total expression components. 
-   /// 
-   /// \param MapModifiers Map-type-modifiers. 
-   /// \param MapModifiersLoc Locations of map-type-modifiers. 
-   /// \param MapperQualifierLoc C++ nested name specifier for the associated 
-   /// user-defined mapper. 
-   /// \param MapperIdInfo The identifier of associated user-defined mapper. 
-   /// \param MapType Map type. 
-   /// \param MapTypeIsImplicit Map type is inferred implicitly. 
-   /// \param MapLoc Location of the map type. 
-   /// \param Locs Locations needed to build a mappable clause. It includes 1) 
-   /// StartLoc: starting location of the clause (the clause keyword); 2) 
-   /// LParenLoc: location of '('; 3) EndLoc: ending location of the clause. 
-   /// \param Sizes All required sizes to build a mappable clause. It includes 1) 
-   /// NumVars: number of expressions listed in this clause; 2) 
-   /// NumUniqueDeclarations: number of unique base declarations in this clause; 
-   /// 3) NumComponentLists: number of component lists in this clause; and 4) 
-   /// NumComponents: total number of expression components in the clause. 
-   explicit OMPMapClause(ArrayRef<OpenMPMapModifierKind> MapModifiers, 
-                         ArrayRef<SourceLocation> MapModifiersLoc, 
-                         NestedNameSpecifierLoc MapperQualifierLoc, 
-                         DeclarationNameInfo MapperIdInfo, 
-                         OpenMPMapClauseKind MapType, bool MapTypeIsImplicit, 
-                         SourceLocation MapLoc, const OMPVarListLocTy &Locs, 
-                         const OMPMappableExprListSizeTy &Sizes) 
-       : OMPMappableExprListClause(llvm::omp::OMPC_map, Locs, Sizes, 
-                                   /*SupportsMapper=*/true, &MapperQualifierLoc, 
-                                   &MapperIdInfo), 
-         MapType(MapType), MapTypeIsImplicit(MapTypeIsImplicit), MapLoc(MapLoc) { 
-     assert(std::size(MapTypeModifiers) == MapModifiers.size() && 
-            "Unexpected number of map type modifiers."); 
-     llvm::copy(MapModifiers, std::begin(MapTypeModifiers)); 
-   
-     assert(std::size(MapTypeModifiersLoc) == MapModifiersLoc.size() && 
-            "Unexpected number of map type modifier locations."); 
-     llvm::copy(MapModifiersLoc, std::begin(MapTypeModifiersLoc)); 
-   } 
-   
-   /// Build an empty clause. 
-   /// 
-   /// \param Sizes All required sizes to build a mappable clause. It includes 1) 
-   /// NumVars: number of expressions listed in this clause; 2) 
-   /// NumUniqueDeclarations: number of unique base declarations in this clause; 
-   /// 3) NumComponentLists: number of component lists in this clause; and 4) 
-   /// NumComponents: total number of expression components in the clause. 
-   explicit OMPMapClause(const OMPMappableExprListSizeTy &Sizes) 
-       : OMPMappableExprListClause(llvm::omp::OMPC_map, OMPVarListLocTy(), Sizes, 
-                                   /*SupportsMapper=*/true) {} 
-   
-   /// Set map-type-modifier for the clause. 
-   /// 
-   /// \param I index for map-type-modifier. 
-   /// \param T map-type-modifier for the clause. 
-   void setMapTypeModifier(unsigned I, OpenMPMapModifierKind T) { 
-     assert(I < NumberOfOMPMapClauseModifiers && 
-            "Unexpected index to store map type modifier, exceeds array size."); 
-     MapTypeModifiers[I] = T; 
-   } 
-   
-   /// Set location for the map-type-modifier. 
-   /// 
-   /// \param I index for map-type-modifier location. 
-   /// \param TLoc map-type-modifier location. 
-   void setMapTypeModifierLoc(unsigned I, SourceLocation TLoc) { 
-     assert(I < NumberOfOMPMapClauseModifiers && 
-            "Index to store map type modifier location exceeds array size."); 
-     MapTypeModifiersLoc[I] = TLoc; 
-   } 
-   
-   /// Set type for the clause. 
-   /// 
-   /// \param T Type for the clause. 
-   void setMapType(OpenMPMapClauseKind T) { MapType = T; } 
-   
-   /// Set type location. 
-   /// 
-   /// \param TLoc Type location. 
-   void setMapLoc(SourceLocation TLoc) { MapLoc = TLoc; } 
-   
-   /// Set colon location. 
-   void setColonLoc(SourceLocation Loc) { ColonLoc = Loc; } 
-   
-   /// Set iterator modifier. 
-   void setIteratorModifier(Expr *IteratorModifier) { 
-     getTrailingObjects<Expr *>()[2 * varlist_size()] = IteratorModifier; 
-   } 
-   
- public: 
-   /// Creates clause with a list of variables \a VL. 
-   /// 
-   /// \param C AST context. 
-   /// \param Locs Locations needed to build a mappable clause. It includes 1) 
-   /// StartLoc: starting location of the clause (the clause keyword); 2) 
-   /// LParenLoc: location of '('; 3) EndLoc: ending location of the clause. 
-   /// \param Vars The original expression used in the clause. 
-   /// \param Declarations Declarations used in the clause. 
-   /// \param ComponentLists Component lists used in the clause. 
-   /// \param UDMapperRefs References to user-defined mappers associated with 
-   /// expressions used in the clause. 
-   /// \param IteratorModifier Iterator modifier. 
-   /// \param MapModifiers Map-type-modifiers. 
-   /// \param MapModifiersLoc Location of map-type-modifiers. 
-   /// \param UDMQualifierLoc C++ nested name specifier for the associated 
-   /// user-defined mapper. 
-   /// \param MapperId The identifier of associated user-defined mapper. 
-   /// \param Type Map type. 
-   /// \param TypeIsImplicit Map type is inferred implicitly. 
-   /// \param TypeLoc Location of the map type. 
-   static OMPMapClause * 
-   Create(const ASTContext &C, const OMPVarListLocTy &Locs, 
-          ArrayRef<Expr *> Vars, ArrayRef<ValueDecl *> Declarations, 
-          MappableExprComponentListsRef ComponentLists, 
-          ArrayRef<Expr *> UDMapperRefs, Expr *IteratorModifier, 
-          ArrayRef<OpenMPMapModifierKind> MapModifiers, 
-          ArrayRef<SourceLocation> MapModifiersLoc, 
-          NestedNameSpecifierLoc UDMQualifierLoc, DeclarationNameInfo MapperId, 
-          OpenMPMapClauseKind Type, bool TypeIsImplicit, SourceLocation TypeLoc); 
-   
-   /// Creates an empty clause with the place for \a NumVars original 
-   /// expressions, \a NumUniqueDeclarations declarations, \NumComponentLists 
-   /// lists, and \a NumComponents expression components. 
-   /// 
-   /// \param C AST context. 
-   /// \param Sizes All required sizes to build a mappable clause. It includes 1) 
-   /// NumVars: number of expressions listed in this clause; 2) 
-   /// NumUniqueDeclarations: number of unique base declarations in this clause; 
-   /// 3) NumComponentLists: number of component lists in this clause; and 4) 
-   /// NumComponents: total number of expression components in the clause. 
-   static OMPMapClause *CreateEmpty(const ASTContext &C, 
-                                    const OMPMappableExprListSizeTy &Sizes); 
-   
-   /// Fetches Expr * of iterator modifier. 
-   Expr *getIteratorModifier() { 
-     return getTrailingObjects<Expr *>()[2 * varlist_size()]; 
-   } 
-   
-   /// Fetches mapping kind for the clause. 
-   OpenMPMapClauseKind getMapType() const LLVM_READONLY { return MapType; } 
-   
-   /// Is this an implicit map type? 
-   /// We have to capture 'IsMapTypeImplicit' from the parser for more 
-   /// informative error messages.  It helps distinguish map(r) from 
-   /// map(tofrom: r), which is important to print more helpful error 
-   /// messages for some target directives. 
-   bool isImplicitMapType() const LLVM_READONLY { return MapTypeIsImplicit; } 
-   
-   /// Fetches the map-type-modifier at 'Cnt' index of array of modifiers. 
-   /// 
-   /// \param Cnt index for map-type-modifier. 
-   OpenMPMapModifierKind getMapTypeModifier(unsigned Cnt) const LLVM_READONLY { 
-     assert(Cnt < NumberOfOMPMapClauseModifiers && 
-            "Requested modifier exceeds the total number of modifiers."); 
-     return MapTypeModifiers[Cnt]; 
-   } 
-   
-   /// Fetches the map-type-modifier location at 'Cnt' index of array of 
-   /// modifiers' locations. 
-   /// 
-   /// \param Cnt index for map-type-modifier location. 
-   SourceLocation getMapTypeModifierLoc(unsigned Cnt) const LLVM_READONLY { 
-     assert(Cnt < NumberOfOMPMapClauseModifiers && 
-            "Requested modifier location exceeds total number of modifiers."); 
-     return MapTypeModifiersLoc[Cnt]; 
-   } 
-   
-   /// Fetches ArrayRef of map-type-modifiers. 
-   ArrayRef<OpenMPMapModifierKind> getMapTypeModifiers() const LLVM_READONLY { 
-     return llvm::ArrayRef(MapTypeModifiers); 
-   } 
-   
-   /// Fetches ArrayRef of location of map-type-modifiers. 
-   ArrayRef<SourceLocation> getMapTypeModifiersLoc() const LLVM_READONLY { 
-     return llvm::ArrayRef(MapTypeModifiersLoc); 
-   } 
-   
-   /// Fetches location of clause mapping kind. 
-   SourceLocation getMapLoc() const LLVM_READONLY { return MapLoc; } 
-   
-   /// Get colon location. 
-   SourceLocation getColonLoc() const { return ColonLoc; } 
-   
-   child_range children() { 
-     return child_range( 
-         reinterpret_cast<Stmt **>(varlist_begin()), 
-         reinterpret_cast<Stmt **>(varlist_end())); 
-   } 
-   
-   const_child_range children() const { 
-     auto Children = const_cast<OMPMapClause *>(this)->children(); 
-     return const_child_range(Children.begin(), Children.end()); 
-   } 
-   
-   child_range used_children() { 
-     if (MapType == OMPC_MAP_to || MapType == OMPC_MAP_tofrom) 
-       return child_range(reinterpret_cast<Stmt **>(varlist_begin()), 
-                          reinterpret_cast<Stmt **>(varlist_end())); 
-     return child_range(child_iterator(), child_iterator()); 
-   } 
-   const_child_range used_children() const { 
-     auto Children = const_cast<OMPMapClause *>(this)->used_children(); 
-     return const_child_range(Children.begin(), Children.end()); 
-   } 
-   
-   
-   static bool classof(const OMPClause *T) { 
-     return T->getClauseKind() == llvm::omp::OMPC_map; 
-   } 
- }; 
-   
- /// This represents 'num_teams' clause in the '#pragma omp ...' 
- /// directive. 
- /// 
- /// \code 
- /// #pragma omp teams num_teams(n) 
- /// \endcode 
- /// In this example directive '#pragma omp teams' has clause 'num_teams' 
- /// with single expression 'n'. 
- class OMPNumTeamsClause : public OMPClause, public OMPClauseWithPreInit { 
-   friend class OMPClauseReader; 
-   
-   /// Location of '('. 
-   SourceLocation LParenLoc; 
-   
-   /// NumTeams number. 
-   Stmt *NumTeams = nullptr; 
-   
-   /// Set the NumTeams number. 
-   /// 
-   /// \param E NumTeams number. 
-   void setNumTeams(Expr *E) { NumTeams = E; } 
-   
- public: 
-   /// Build 'num_teams' clause. 
-   /// 
-   /// \param E Expression associated with this clause. 
-   /// \param HelperE Helper Expression associated with this clause. 
-   /// \param CaptureRegion Innermost OpenMP region where expressions in this 
-   /// clause must be captured. 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param LParenLoc Location of '('. 
-   /// \param EndLoc Ending location of the clause. 
-   OMPNumTeamsClause(Expr *E, Stmt *HelperE, OpenMPDirectiveKind CaptureRegion, 
-                     SourceLocation StartLoc, SourceLocation LParenLoc, 
-                     SourceLocation EndLoc) 
-       : OMPClause(llvm::omp::OMPC_num_teams, StartLoc, EndLoc), 
-         OMPClauseWithPreInit(this), LParenLoc(LParenLoc), NumTeams(E) { 
-     setPreInitStmt(HelperE, CaptureRegion); 
-   } 
-   
-   /// Build an empty clause. 
-   OMPNumTeamsClause() 
-       : OMPClause(llvm::omp::OMPC_num_teams, SourceLocation(), 
-                   SourceLocation()), 
-         OMPClauseWithPreInit(this) {} 
-   
-   /// Sets the location of '('. 
-   void setLParenLoc(SourceLocation Loc) { LParenLoc = Loc; } 
-   
-   /// Returns the location of '('. 
-   SourceLocation getLParenLoc() const { return LParenLoc; } 
-   
-   /// Return NumTeams number. 
-   Expr *getNumTeams() { return cast<Expr>(NumTeams); } 
-   
-   /// Return NumTeams number. 
-   Expr *getNumTeams() const { return cast<Expr>(NumTeams); } 
-   
-   child_range children() { return child_range(&NumTeams, &NumTeams + 1); } 
-   
-   const_child_range children() const { 
-     return const_child_range(&NumTeams, &NumTeams + 1); 
-   } 
-   
-   child_range used_children() { 
-     return child_range(child_iterator(), child_iterator()); 
-   } 
-   const_child_range used_children() const { 
-     return const_child_range(const_child_iterator(), const_child_iterator()); 
-   } 
-   
-   static bool classof(const OMPClause *T) { 
-     return T->getClauseKind() == llvm::omp::OMPC_num_teams; 
-   } 
- }; 
-   
- /// This represents 'thread_limit' clause in the '#pragma omp ...' 
- /// directive. 
- /// 
- /// \code 
- /// #pragma omp teams thread_limit(n) 
- /// \endcode 
- /// In this example directive '#pragma omp teams' has clause 'thread_limit' 
- /// with single expression 'n'. 
- class OMPThreadLimitClause : public OMPClause, public OMPClauseWithPreInit { 
-   friend class OMPClauseReader; 
-   
-   /// Location of '('. 
-   SourceLocation LParenLoc; 
-   
-   /// ThreadLimit number. 
-   Stmt *ThreadLimit = nullptr; 
-   
-   /// Set the ThreadLimit number. 
-   /// 
-   /// \param E ThreadLimit number. 
-   void setThreadLimit(Expr *E) { ThreadLimit = E; } 
-   
- public: 
-   /// Build 'thread_limit' clause. 
-   /// 
-   /// \param E Expression associated with this clause. 
-   /// \param HelperE Helper Expression associated with this clause. 
-   /// \param CaptureRegion Innermost OpenMP region where expressions in this 
-   /// clause must be captured. 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param LParenLoc Location of '('. 
-   /// \param EndLoc Ending location of the clause. 
-   OMPThreadLimitClause(Expr *E, Stmt *HelperE, 
-                        OpenMPDirectiveKind CaptureRegion, 
-                        SourceLocation StartLoc, SourceLocation LParenLoc, 
-                        SourceLocation EndLoc) 
-       : OMPClause(llvm::omp::OMPC_thread_limit, StartLoc, EndLoc), 
-         OMPClauseWithPreInit(this), LParenLoc(LParenLoc), ThreadLimit(E) { 
-     setPreInitStmt(HelperE, CaptureRegion); 
-   } 
-   
-   /// Build an empty clause. 
-   OMPThreadLimitClause() 
-       : OMPClause(llvm::omp::OMPC_thread_limit, SourceLocation(), 
-                   SourceLocation()), 
-         OMPClauseWithPreInit(this) {} 
-   
-   /// Sets the location of '('. 
-   void setLParenLoc(SourceLocation Loc) { LParenLoc = Loc; } 
-   
-   /// Returns the location of '('. 
-   SourceLocation getLParenLoc() const { return LParenLoc; } 
-   
-   /// Return ThreadLimit number. 
-   Expr *getThreadLimit() { return cast<Expr>(ThreadLimit); } 
-   
-   /// Return ThreadLimit number. 
-   Expr *getThreadLimit() const { return cast<Expr>(ThreadLimit); } 
-   
-   child_range children() { return child_range(&ThreadLimit, &ThreadLimit + 1); } 
-   
-   const_child_range children() const { 
-     return const_child_range(&ThreadLimit, &ThreadLimit + 1); 
-   } 
-   
-   child_range used_children() { 
-     return child_range(child_iterator(), child_iterator()); 
-   } 
-   const_child_range used_children() const { 
-     return const_child_range(const_child_iterator(), const_child_iterator()); 
-   } 
-   
-   static bool classof(const OMPClause *T) { 
-     return T->getClauseKind() == llvm::omp::OMPC_thread_limit; 
-   } 
- }; 
-   
- /// This represents 'priority' clause in the '#pragma omp ...' 
- /// directive. 
- /// 
- /// \code 
- /// #pragma omp task priority(n) 
- /// \endcode 
- /// In this example directive '#pragma omp teams' has clause 'priority' with 
- /// single expression 'n'. 
- class OMPPriorityClause : public OMPClause, public OMPClauseWithPreInit { 
-   friend class OMPClauseReader; 
-   
-   /// Location of '('. 
-   SourceLocation LParenLoc; 
-   
-   /// Priority number. 
-   Stmt *Priority = nullptr; 
-   
-   /// Set the Priority number. 
-   /// 
-   /// \param E Priority number. 
-   void setPriority(Expr *E) { Priority = E; } 
-   
- public: 
-   /// Build 'priority' clause. 
-   /// 
-   /// \param Priority Expression associated with this clause. 
-   /// \param HelperPriority Helper priority for the construct. 
-   /// \param CaptureRegion Innermost OpenMP region where expressions in this 
-   /// clause must be captured. 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param LParenLoc Location of '('. 
-   /// \param EndLoc Ending location of the clause. 
-   OMPPriorityClause(Expr *Priority, Stmt *HelperPriority, 
-                     OpenMPDirectiveKind CaptureRegion, SourceLocation StartLoc, 
-                     SourceLocation LParenLoc, SourceLocation EndLoc) 
-       : OMPClause(llvm::omp::OMPC_priority, StartLoc, EndLoc), 
-         OMPClauseWithPreInit(this), LParenLoc(LParenLoc), Priority(Priority) { 
-     setPreInitStmt(HelperPriority, CaptureRegion); 
-   } 
-   
-   /// Build an empty clause. 
-   OMPPriorityClause() 
-       : OMPClause(llvm::omp::OMPC_priority, SourceLocation(), SourceLocation()), 
-         OMPClauseWithPreInit(this) {} 
-   
-   /// Sets the location of '('. 
-   void setLParenLoc(SourceLocation Loc) { LParenLoc = Loc; } 
-   
-   /// Returns the location of '('. 
-   SourceLocation getLParenLoc() const { return LParenLoc; } 
-   
-   /// Return Priority number. 
-   Expr *getPriority() { return cast<Expr>(Priority); } 
-   
-   /// Return Priority number. 
-   Expr *getPriority() const { return cast<Expr>(Priority); } 
-   
-   child_range children() { return child_range(&Priority, &Priority + 1); } 
-   
-   const_child_range children() const { 
-     return const_child_range(&Priority, &Priority + 1); 
-   } 
-   
-   child_range used_children(); 
-   const_child_range used_children() const { 
-     auto Children = const_cast<OMPPriorityClause *>(this)->used_children(); 
-     return const_child_range(Children.begin(), Children.end()); 
-   } 
-   
-   static bool classof(const OMPClause *T) { 
-     return T->getClauseKind() == llvm::omp::OMPC_priority; 
-   } 
- }; 
-   
- /// This represents 'grainsize' clause in the '#pragma omp ...' 
- /// directive. 
- /// 
- /// \code 
- /// #pragma omp taskloop grainsize(4) 
- /// \endcode 
- /// In this example directive '#pragma omp taskloop' has clause 'grainsize' 
- /// with single expression '4'. 
- class OMPGrainsizeClause : public OMPClause, public OMPClauseWithPreInit { 
-   friend class OMPClauseReader; 
-   
-   /// Location of '('. 
-   SourceLocation LParenLoc; 
-   
-   /// Modifiers for 'grainsize' clause. 
-   OpenMPGrainsizeClauseModifier Modifier = OMPC_GRAINSIZE_unknown; 
-   
-   /// Location of the modifier. 
-   SourceLocation ModifierLoc; 
-   
-   /// Safe iteration space distance. 
-   Stmt *Grainsize = nullptr; 
-   
-   /// Set safelen. 
-   void setGrainsize(Expr *Size) { Grainsize = Size; } 
-   
-   /// Sets modifier. 
-   void setModifier(OpenMPGrainsizeClauseModifier M) { Modifier = M; } 
-   
-   /// Sets modifier location. 
-   void setModifierLoc(SourceLocation Loc) { ModifierLoc = Loc; } 
-   
- public: 
-   /// Build 'grainsize' clause. 
-   /// 
-   /// \param Modifier Clause modifier. 
-   /// \param Size Expression associated with this clause. 
-   /// \param HelperSize Helper grainsize for the construct. 
-   /// \param CaptureRegion Innermost OpenMP region where expressions in this 
-   /// clause must be captured. 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param ModifierLoc Modifier location. 
-   /// \param LParenLoc Location of '('. 
-   /// \param EndLoc Ending location of the clause. 
-   OMPGrainsizeClause(OpenMPGrainsizeClauseModifier Modifier, Expr *Size, 
-                      Stmt *HelperSize, OpenMPDirectiveKind CaptureRegion, 
-                      SourceLocation StartLoc, SourceLocation LParenLoc, 
-                      SourceLocation ModifierLoc, SourceLocation EndLoc) 
-       : OMPClause(llvm::omp::OMPC_grainsize, StartLoc, EndLoc), 
-         OMPClauseWithPreInit(this), LParenLoc(LParenLoc), Modifier(Modifier), 
-         ModifierLoc(ModifierLoc), Grainsize(Size) { 
-     setPreInitStmt(HelperSize, CaptureRegion); 
-   } 
-   
-   /// Build an empty clause. 
-   explicit OMPGrainsizeClause() 
-       : OMPClause(llvm::omp::OMPC_grainsize, SourceLocation(), 
-                   SourceLocation()), 
-         OMPClauseWithPreInit(this) {} 
-   
-   /// Sets the location of '('. 
-   void setLParenLoc(SourceLocation Loc) { LParenLoc = Loc; } 
-   
-   /// Returns the location of '('. 
-   SourceLocation getLParenLoc() const { return LParenLoc; } 
-   
-   /// Return safe iteration space distance. 
-   Expr *getGrainsize() const { return cast_or_null<Expr>(Grainsize); } 
-   
-   /// Gets modifier. 
-   OpenMPGrainsizeClauseModifier getModifier() const { return Modifier; } 
-   
-   /// Gets modifier location. 
-   SourceLocation getModifierLoc() const { return ModifierLoc; } 
-   
-   child_range children() { return child_range(&Grainsize, &Grainsize + 1); } 
-   
-   const_child_range children() const { 
-     return const_child_range(&Grainsize, &Grainsize + 1); 
-   } 
-   
-   child_range used_children(); 
-   const_child_range used_children() const { 
-     auto Children = const_cast<OMPGrainsizeClause *>(this)->used_children(); 
-     return const_child_range(Children.begin(), Children.end()); 
-   } 
-   
-   static bool classof(const OMPClause *T) { 
-     return T->getClauseKind() == llvm::omp::OMPC_grainsize; 
-   } 
- }; 
-   
- /// This represents 'nogroup' clause in the '#pragma omp ...' directive. 
- /// 
- /// \code 
- /// #pragma omp taskloop nogroup 
- /// \endcode 
- /// In this example directive '#pragma omp taskloop' has 'nogroup' clause. 
- class OMPNogroupClause : public OMPClause { 
- public: 
-   /// Build 'nogroup' clause. 
-   /// 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param EndLoc Ending location of the clause. 
-   OMPNogroupClause(SourceLocation StartLoc, SourceLocation EndLoc) 
-       : OMPClause(llvm::omp::OMPC_nogroup, StartLoc, EndLoc) {} 
-   
-   /// Build an empty clause. 
-   OMPNogroupClause() 
-       : OMPClause(llvm::omp::OMPC_nogroup, SourceLocation(), SourceLocation()) { 
-   } 
-   
-   child_range children() { 
-     return child_range(child_iterator(), child_iterator()); 
-   } 
-   
-   const_child_range children() const { 
-     return const_child_range(const_child_iterator(), const_child_iterator()); 
-   } 
-   
-   child_range used_children() { 
-     return child_range(child_iterator(), child_iterator()); 
-   } 
-   const_child_range used_children() const { 
-     return const_child_range(const_child_iterator(), const_child_iterator()); 
-   } 
-   
-   static bool classof(const OMPClause *T) { 
-     return T->getClauseKind() == llvm::omp::OMPC_nogroup; 
-   } 
- }; 
-   
- /// This represents 'num_tasks' clause in the '#pragma omp ...' 
- /// directive. 
- /// 
- /// \code 
- /// #pragma omp taskloop num_tasks(4) 
- /// \endcode 
- /// In this example directive '#pragma omp taskloop' has clause 'num_tasks' 
- /// with single expression '4'. 
- class OMPNumTasksClause : public OMPClause, public OMPClauseWithPreInit { 
-   friend class OMPClauseReader; 
-   
-   /// Location of '('. 
-   SourceLocation LParenLoc; 
-   
-   /// Modifiers for 'num_tasks' clause. 
-   OpenMPNumTasksClauseModifier Modifier = OMPC_NUMTASKS_unknown; 
-   
-   /// Location of the modifier. 
-   SourceLocation ModifierLoc; 
-   
-   /// Safe iteration space distance. 
-   Stmt *NumTasks = nullptr; 
-   
-   /// Set safelen. 
-   void setNumTasks(Expr *Size) { NumTasks = Size; } 
-   
-   /// Sets modifier. 
-   void setModifier(OpenMPNumTasksClauseModifier M) { Modifier = M; } 
-   
-   /// Sets modifier location. 
-   void setModifierLoc(SourceLocation Loc) { ModifierLoc = Loc; } 
-   
- public: 
-   /// Build 'num_tasks' clause. 
-   /// 
-   /// \param Modifier Clause modifier. 
-   /// \param Size Expression associated with this clause. 
-   /// \param HelperSize Helper grainsize for the construct. 
-   /// \param CaptureRegion Innermost OpenMP region where expressions in this 
-   /// clause must be captured. 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param EndLoc Ending location of the clause. 
-   /// \param ModifierLoc Modifier location. 
-   /// \param LParenLoc Location of '('. 
-   OMPNumTasksClause(OpenMPNumTasksClauseModifier Modifier, Expr *Size, 
-                     Stmt *HelperSize, OpenMPDirectiveKind CaptureRegion, 
-                     SourceLocation StartLoc, SourceLocation LParenLoc, 
-                     SourceLocation ModifierLoc, SourceLocation EndLoc) 
-       : OMPClause(llvm::omp::OMPC_num_tasks, StartLoc, EndLoc), 
-         OMPClauseWithPreInit(this), LParenLoc(LParenLoc), Modifier(Modifier), 
-         ModifierLoc(ModifierLoc), NumTasks(Size) { 
-     setPreInitStmt(HelperSize, CaptureRegion); 
-   } 
-   
-   /// Build an empty clause. 
-   explicit OMPNumTasksClause() 
-       : OMPClause(llvm::omp::OMPC_num_tasks, SourceLocation(), 
-                   SourceLocation()), 
-         OMPClauseWithPreInit(this) {} 
-   
-   /// Sets the location of '('. 
-   void setLParenLoc(SourceLocation Loc) { LParenLoc = Loc; } 
-   
-   /// Returns the location of '('. 
-   SourceLocation getLParenLoc() const { return LParenLoc; } 
-   
-   /// Return safe iteration space distance. 
-   Expr *getNumTasks() const { return cast_or_null<Expr>(NumTasks); } 
-   
-   /// Gets modifier. 
-   OpenMPNumTasksClauseModifier getModifier() const { return Modifier; } 
-   
-   /// Gets modifier location. 
-   SourceLocation getModifierLoc() const { return ModifierLoc; } 
-   
-   child_range children() { return child_range(&NumTasks, &NumTasks + 1); } 
-   
-   const_child_range children() const { 
-     return const_child_range(&NumTasks, &NumTasks + 1); 
-   } 
-   
-   child_range used_children(); 
-   const_child_range used_children() const { 
-     auto Children = const_cast<OMPNumTasksClause *>(this)->used_children(); 
-     return const_child_range(Children.begin(), Children.end()); 
-   } 
-   
-   static bool classof(const OMPClause *T) { 
-     return T->getClauseKind() == llvm::omp::OMPC_num_tasks; 
-   } 
- }; 
-   
- /// This represents 'hint' clause in the '#pragma omp ...' directive. 
- /// 
- /// \code 
- /// #pragma omp critical (name) hint(6) 
- /// \endcode 
- /// In this example directive '#pragma omp critical' has name 'name' and clause 
- /// 'hint' with argument '6'. 
- class OMPHintClause : public OMPClause { 
-   friend class OMPClauseReader; 
-   
-   /// Location of '('. 
-   SourceLocation LParenLoc; 
-   
-   /// Hint expression of the 'hint' clause. 
-   Stmt *Hint = nullptr; 
-   
-   /// Set hint expression. 
-   void setHint(Expr *H) { Hint = H; } 
-   
- public: 
-   /// Build 'hint' clause with expression \a Hint. 
-   /// 
-   /// \param Hint Hint expression. 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param LParenLoc Location of '('. 
-   /// \param EndLoc Ending location of the clause. 
-   OMPHintClause(Expr *Hint, SourceLocation StartLoc, SourceLocation LParenLoc, 
-                 SourceLocation EndLoc) 
-       : OMPClause(llvm::omp::OMPC_hint, StartLoc, EndLoc), LParenLoc(LParenLoc), 
-         Hint(Hint) {} 
-   
-   /// Build an empty clause. 
-   OMPHintClause() 
-       : OMPClause(llvm::omp::OMPC_hint, SourceLocation(), SourceLocation()) {} 
-   
-   /// Sets the location of '('. 
-   void setLParenLoc(SourceLocation Loc) { LParenLoc = Loc; } 
-   
-   /// Returns the location of '('. 
-   SourceLocation getLParenLoc() const { return LParenLoc; } 
-   
-   /// Returns number of threads. 
-   Expr *getHint() const { return cast_or_null<Expr>(Hint); } 
-   
-   child_range children() { return child_range(&Hint, &Hint + 1); } 
-   
-   const_child_range children() const { 
-     return const_child_range(&Hint, &Hint + 1); 
-   } 
-   
-   child_range used_children() { 
-     return child_range(child_iterator(), child_iterator()); 
-   } 
-   const_child_range used_children() const { 
-     return const_child_range(const_child_iterator(), const_child_iterator()); 
-   } 
-   
-   static bool classof(const OMPClause *T) { 
-     return T->getClauseKind() == llvm::omp::OMPC_hint; 
-   } 
- }; 
-   
- /// This represents 'dist_schedule' clause in the '#pragma omp ...' 
- /// directive. 
- /// 
- /// \code 
- /// #pragma omp distribute dist_schedule(static, 3) 
- /// \endcode 
- /// In this example directive '#pragma omp distribute' has 'dist_schedule' 
- /// clause with arguments 'static' and '3'. 
- class OMPDistScheduleClause : public OMPClause, public OMPClauseWithPreInit { 
-   friend class OMPClauseReader; 
-   
-   /// Location of '('. 
-   SourceLocation LParenLoc; 
-   
-   /// A kind of the 'schedule' clause. 
-   OpenMPDistScheduleClauseKind Kind = OMPC_DIST_SCHEDULE_unknown; 
-   
-   /// Start location of the schedule kind in source code. 
-   SourceLocation KindLoc; 
-   
-   /// Location of ',' (if any). 
-   SourceLocation CommaLoc; 
-   
-   /// Chunk size. 
-   Expr *ChunkSize = nullptr; 
-   
-   /// Set schedule kind. 
-   /// 
-   /// \param K Schedule kind. 
-   void setDistScheduleKind(OpenMPDistScheduleClauseKind K) { Kind = K; } 
-   
-   /// Sets the location of '('. 
-   /// 
-   /// \param Loc Location of '('. 
-   void setLParenLoc(SourceLocation Loc) { LParenLoc = Loc; } 
-   
-   /// Set schedule kind start location. 
-   /// 
-   /// \param KLoc Schedule kind location. 
-   void setDistScheduleKindLoc(SourceLocation KLoc) { KindLoc = KLoc; } 
-   
-   /// Set location of ','. 
-   /// 
-   /// \param Loc Location of ','. 
-   void setCommaLoc(SourceLocation Loc) { CommaLoc = Loc; } 
-   
-   /// Set chunk size. 
-   /// 
-   /// \param E Chunk size. 
-   void setChunkSize(Expr *E) { ChunkSize = E; } 
-   
- public: 
-   /// Build 'dist_schedule' clause with schedule kind \a Kind and chunk 
-   /// size expression \a ChunkSize. 
-   /// 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param LParenLoc Location of '('. 
-   /// \param KLoc Starting location of the argument. 
-   /// \param CommaLoc Location of ','. 
-   /// \param EndLoc Ending location of the clause. 
-   /// \param Kind DistSchedule kind. 
-   /// \param ChunkSize Chunk size. 
-   /// \param HelperChunkSize Helper chunk size for combined directives. 
-   OMPDistScheduleClause(SourceLocation StartLoc, SourceLocation LParenLoc, 
-                         SourceLocation KLoc, SourceLocation CommaLoc, 
-                         SourceLocation EndLoc, 
-                         OpenMPDistScheduleClauseKind Kind, Expr *ChunkSize, 
-                         Stmt *HelperChunkSize) 
-       : OMPClause(llvm::omp::OMPC_dist_schedule, StartLoc, EndLoc), 
-         OMPClauseWithPreInit(this), LParenLoc(LParenLoc), Kind(Kind), 
-         KindLoc(KLoc), CommaLoc(CommaLoc), ChunkSize(ChunkSize) { 
-     setPreInitStmt(HelperChunkSize); 
-   } 
-   
-   /// Build an empty clause. 
-   explicit OMPDistScheduleClause() 
-       : OMPClause(llvm::omp::OMPC_dist_schedule, SourceLocation(), 
-                   SourceLocation()), 
-         OMPClauseWithPreInit(this) {} 
-   
-   /// Get kind of the clause. 
-   OpenMPDistScheduleClauseKind getDistScheduleKind() const { return Kind; } 
-   
-   /// Get location of '('. 
-   SourceLocation getLParenLoc() { return LParenLoc; } 
-   
-   /// Get kind location. 
-   SourceLocation getDistScheduleKindLoc() { return KindLoc; } 
-   
-   /// Get location of ','. 
-   SourceLocation getCommaLoc() { return CommaLoc; } 
-   
-   /// Get chunk size. 
-   Expr *getChunkSize() { return ChunkSize; } 
-   
-   /// Get chunk size. 
-   const Expr *getChunkSize() const { return ChunkSize; } 
-   
-   child_range children() { 
-     return child_range(reinterpret_cast<Stmt **>(&ChunkSize), 
-                        reinterpret_cast<Stmt **>(&ChunkSize) + 1); 
-   } 
-   
-   const_child_range children() const { 
-     auto Children = const_cast<OMPDistScheduleClause *>(this)->children(); 
-     return const_child_range(Children.begin(), Children.end()); 
-   } 
-   
-   child_range used_children() { 
-     return child_range(child_iterator(), child_iterator()); 
-   } 
-   const_child_range used_children() const { 
-     return const_child_range(const_child_iterator(), const_child_iterator()); 
-   } 
-   
-   static bool classof(const OMPClause *T) { 
-     return T->getClauseKind() == llvm::omp::OMPC_dist_schedule; 
-   } 
- }; 
-   
- /// This represents 'defaultmap' clause in the '#pragma omp ...' directive. 
- /// 
- /// \code 
- /// #pragma omp target defaultmap(tofrom: scalar) 
- /// \endcode 
- /// In this example directive '#pragma omp target' has 'defaultmap' clause of kind 
- /// 'scalar' with modifier 'tofrom'. 
- class OMPDefaultmapClause : public OMPClause { 
-   friend class OMPClauseReader; 
-   
-   /// Location of '('. 
-   SourceLocation LParenLoc; 
-   
-   /// Modifiers for 'defaultmap' clause. 
-   OpenMPDefaultmapClauseModifier Modifier = OMPC_DEFAULTMAP_MODIFIER_unknown; 
-   
-   /// Locations of modifiers. 
-   SourceLocation ModifierLoc; 
-   
-   /// A kind of the 'defaultmap' clause. 
-   OpenMPDefaultmapClauseKind Kind = OMPC_DEFAULTMAP_unknown; 
-   
-   /// Start location of the defaultmap kind in source code. 
-   SourceLocation KindLoc; 
-   
-   /// Set defaultmap kind. 
-   /// 
-   /// \param K Defaultmap kind. 
-   void setDefaultmapKind(OpenMPDefaultmapClauseKind K) { Kind = K; } 
-   
-   /// Set the defaultmap modifier. 
-   /// 
-   /// \param M Defaultmap modifier. 
-   void setDefaultmapModifier(OpenMPDefaultmapClauseModifier M) { 
-     Modifier = M; 
-   } 
-   
-   /// Set location of the defaultmap modifier. 
-   void setDefaultmapModifierLoc(SourceLocation Loc) { 
-     ModifierLoc = Loc; 
-   } 
-   
-   /// Sets the location of '('. 
-   /// 
-   /// \param Loc Location of '('. 
-   void setLParenLoc(SourceLocation Loc) { LParenLoc = Loc; } 
-   
-   /// Set defaultmap kind start location. 
-   /// 
-   /// \param KLoc Defaultmap kind location. 
-   void setDefaultmapKindLoc(SourceLocation KLoc) { KindLoc = KLoc; } 
-   
- public: 
-   /// Build 'defaultmap' clause with defaultmap kind \a Kind 
-   /// 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param LParenLoc Location of '('. 
-   /// \param KLoc Starting location of the argument. 
-   /// \param EndLoc Ending location of the clause. 
-   /// \param Kind Defaultmap kind. 
-   /// \param M The modifier applied to 'defaultmap' clause. 
-   /// \param MLoc Location of the modifier 
-   OMPDefaultmapClause(SourceLocation StartLoc, SourceLocation LParenLoc, 
-                       SourceLocation MLoc, SourceLocation KLoc, 
-                       SourceLocation EndLoc, OpenMPDefaultmapClauseKind Kind, 
-                       OpenMPDefaultmapClauseModifier M) 
-       : OMPClause(llvm::omp::OMPC_defaultmap, StartLoc, EndLoc), 
-         LParenLoc(LParenLoc), Modifier(M), ModifierLoc(MLoc), Kind(Kind), 
-         KindLoc(KLoc) {} 
-   
-   /// Build an empty clause. 
-   explicit OMPDefaultmapClause() 
-       : OMPClause(llvm::omp::OMPC_defaultmap, SourceLocation(), 
-                   SourceLocation()) {} 
-   
-   /// Get kind of the clause. 
-   OpenMPDefaultmapClauseKind getDefaultmapKind() const { return Kind; } 
-   
-   /// Get the modifier of the clause. 
-   OpenMPDefaultmapClauseModifier getDefaultmapModifier() const { 
-     return Modifier; 
-   } 
-   
-   /// Get location of '('. 
-   SourceLocation getLParenLoc() { return LParenLoc; } 
-   
-   /// Get kind location. 
-   SourceLocation getDefaultmapKindLoc() { return KindLoc; } 
-   
-   /// Get the modifier location. 
-   SourceLocation getDefaultmapModifierLoc() const { 
-     return ModifierLoc; 
-   } 
-   
-   child_range children() { 
-     return child_range(child_iterator(), child_iterator()); 
-   } 
-   
-   const_child_range children() const { 
-     return const_child_range(const_child_iterator(), const_child_iterator()); 
-   } 
-   
-   child_range used_children() { 
-     return child_range(child_iterator(), child_iterator()); 
-   } 
-   const_child_range used_children() const { 
-     return const_child_range(const_child_iterator(), const_child_iterator()); 
-   } 
-   
-   static bool classof(const OMPClause *T) { 
-     return T->getClauseKind() == llvm::omp::OMPC_defaultmap; 
-   } 
- }; 
-   
- /// This represents clause 'to' in the '#pragma omp ...' 
- /// directives. 
- /// 
- /// \code 
- /// #pragma omp target update to(a,b) 
- /// \endcode 
- /// In this example directive '#pragma omp target update' has clause 'to' 
- /// with the variables 'a' and 'b'. 
- class OMPToClause final : public OMPMappableExprListClause<OMPToClause>, 
-                           private llvm::TrailingObjects< 
-                               OMPToClause, Expr *, ValueDecl *, unsigned, 
-                               OMPClauseMappableExprCommon::MappableComponent> { 
-   friend class OMPClauseReader; 
-   friend OMPMappableExprListClause; 
-   friend OMPVarListClause; 
-   friend TrailingObjects; 
-   
-   /// Motion-modifiers for the 'to' clause. 
-   OpenMPMotionModifierKind MotionModifiers[NumberOfOMPMotionModifiers] = { 
-       OMPC_MOTION_MODIFIER_unknown, OMPC_MOTION_MODIFIER_unknown}; 
-   
-   /// Location of motion-modifiers for the 'to' clause. 
-   SourceLocation MotionModifiersLoc[NumberOfOMPMotionModifiers]; 
-   
-   /// Colon location. 
-   SourceLocation ColonLoc; 
-   
-   /// Build clause with number of variables \a NumVars. 
-   /// 
-   /// \param TheMotionModifiers Motion-modifiers. 
-   /// \param TheMotionModifiersLoc Locations of motion-modifiers. 
-   /// \param MapperQualifierLoc C++ nested name specifier for the associated 
-   /// user-defined mapper. 
-   /// \param MapperIdInfo The identifier of associated user-defined mapper. 
-   /// \param Locs Locations needed to build a mappable clause. It includes 1) 
-   /// StartLoc: starting location of the clause (the clause keyword); 2) 
-   /// LParenLoc: location of '('; 3) EndLoc: ending location of the clause. 
-   /// \param Sizes All required sizes to build a mappable clause. It includes 1) 
-   /// NumVars: number of expressions listed in this clause; 2) 
-   /// NumUniqueDeclarations: number of unique base declarations in this clause; 
-   /// 3) NumComponentLists: number of component lists in this clause; and 4) 
-   /// NumComponents: total number of expression components in the clause. 
-   explicit OMPToClause(ArrayRef<OpenMPMotionModifierKind> TheMotionModifiers, 
-                        ArrayRef<SourceLocation> TheMotionModifiersLoc, 
-                        NestedNameSpecifierLoc MapperQualifierLoc, 
-                        DeclarationNameInfo MapperIdInfo, 
-                        const OMPVarListLocTy &Locs, 
-                        const OMPMappableExprListSizeTy &Sizes) 
-       : OMPMappableExprListClause(llvm::omp::OMPC_to, Locs, Sizes, 
-                                   /*SupportsMapper=*/true, &MapperQualifierLoc, 
-                                   &MapperIdInfo) { 
-     assert(std::size(MotionModifiers) == TheMotionModifiers.size() && 
-            "Unexpected number of motion modifiers."); 
-     llvm::copy(TheMotionModifiers, std::begin(MotionModifiers)); 
-   
-     assert(std::size(MotionModifiersLoc) == TheMotionModifiersLoc.size() && 
-            "Unexpected number of motion modifier locations."); 
-     llvm::copy(TheMotionModifiersLoc, std::begin(MotionModifiersLoc)); 
-   } 
-   
-   /// Build an empty clause. 
-   /// 
-   /// \param Sizes All required sizes to build a mappable clause. It includes 1) 
-   /// NumVars: number of expressions listed in this clause; 2) 
-   /// NumUniqueDeclarations: number of unique base declarations in this clause; 
-   /// 3) NumComponentLists: number of component lists in this clause; and 4) 
-   /// NumComponents: total number of expression components in the clause. 
-   explicit OMPToClause(const OMPMappableExprListSizeTy &Sizes) 
-       : OMPMappableExprListClause(llvm::omp::OMPC_to, OMPVarListLocTy(), Sizes, 
-                                   /*SupportsMapper=*/true) {} 
-   
-   /// Set motion-modifier for the clause. 
-   /// 
-   /// \param I index for motion-modifier. 
-   /// \param T motion-modifier for the clause. 
-   void setMotionModifier(unsigned I, OpenMPMotionModifierKind T) { 
-     assert(I < NumberOfOMPMotionModifiers && 
-            "Unexpected index to store motion modifier, exceeds array size."); 
-     MotionModifiers[I] = T; 
-   } 
-   
-   /// Set location for the motion-modifier. 
-   /// 
-   /// \param I index for motion-modifier location. 
-   /// \param TLoc motion-modifier location. 
-   void setMotionModifierLoc(unsigned I, SourceLocation TLoc) { 
-     assert(I < NumberOfOMPMotionModifiers && 
-            "Index to store motion modifier location exceeds array size."); 
-     MotionModifiersLoc[I] = TLoc; 
-   } 
-   
-   /// Set colon location. 
-   void setColonLoc(SourceLocation Loc) { ColonLoc = Loc; } 
-   
-   /// Define the sizes of each trailing object array except the last one. This 
-   /// is required for TrailingObjects to work properly. 
-   size_t numTrailingObjects(OverloadToken<Expr *>) const { 
-     // There are varlist_size() of expressions, and varlist_size() of 
-     // user-defined mappers. 
-     return 2 * varlist_size(); 
-   } 
-   size_t numTrailingObjects(OverloadToken<ValueDecl *>) const { 
-     return getUniqueDeclarationsNum(); 
-   } 
-   size_t numTrailingObjects(OverloadToken<unsigned>) const { 
-     return getUniqueDeclarationsNum() + getTotalComponentListNum(); 
-   } 
-   
- public: 
-   /// Creates clause with a list of variables \a Vars. 
-   /// 
-   /// \param C AST context. 
-   /// \param Locs Locations needed to build a mappable clause. It includes 1) 
-   /// StartLoc: starting location of the clause (the clause keyword); 2) 
-   /// LParenLoc: location of '('; 3) EndLoc: ending location of the clause. 
-   /// \param Vars The original expression used in the clause. 
-   /// \param Declarations Declarations used in the clause. 
-   /// \param ComponentLists Component lists used in the clause. 
-   /// \param MotionModifiers Motion-modifiers. 
-   /// \param MotionModifiersLoc Location of motion-modifiers. 
-   /// \param UDMapperRefs References to user-defined mappers associated with 
-   /// expressions used in the clause. 
-   /// \param UDMQualifierLoc C++ nested name specifier for the associated 
-   /// user-defined mapper. 
-   /// \param MapperId The identifier of associated user-defined mapper. 
-   static OMPToClause *Create(const ASTContext &C, const OMPVarListLocTy &Locs, 
-                              ArrayRef<Expr *> Vars, 
-                              ArrayRef<ValueDecl *> Declarations, 
-                              MappableExprComponentListsRef ComponentLists, 
-                              ArrayRef<Expr *> UDMapperRefs, 
-                              ArrayRef<OpenMPMotionModifierKind> MotionModifiers, 
-                              ArrayRef<SourceLocation> MotionModifiersLoc, 
-                              NestedNameSpecifierLoc UDMQualifierLoc, 
-                              DeclarationNameInfo MapperId); 
-   
-   /// Creates an empty clause with the place for \a NumVars variables. 
-   /// 
-   /// \param C AST context. 
-   /// \param Sizes All required sizes to build a mappable clause. It includes 1) 
-   /// NumVars: number of expressions listed in this clause; 2) 
-   /// NumUniqueDeclarations: number of unique base declarations in this clause; 
-   /// 3) NumComponentLists: number of component lists in this clause; and 4) 
-   /// NumComponents: total number of expression components in the clause. 
-   static OMPToClause *CreateEmpty(const ASTContext &C, 
-                                   const OMPMappableExprListSizeTy &Sizes); 
-   
-   /// Fetches the motion-modifier at 'Cnt' index of array of modifiers. 
-   /// 
-   /// \param Cnt index for motion-modifier. 
-   OpenMPMotionModifierKind getMotionModifier(unsigned Cnt) const LLVM_READONLY { 
-     assert(Cnt < NumberOfOMPMotionModifiers && 
-            "Requested modifier exceeds the total number of modifiers."); 
-     return MotionModifiers[Cnt]; 
-   } 
-   
-   /// Fetches the motion-modifier location at 'Cnt' index of array of modifiers' 
-   /// locations. 
-   /// 
-   /// \param Cnt index for motion-modifier location. 
-   SourceLocation getMotionModifierLoc(unsigned Cnt) const LLVM_READONLY { 
-     assert(Cnt < NumberOfOMPMotionModifiers && 
-            "Requested modifier location exceeds total number of modifiers."); 
-     return MotionModifiersLoc[Cnt]; 
-   } 
-   
-   /// Fetches ArrayRef of motion-modifiers. 
-   ArrayRef<OpenMPMotionModifierKind> getMotionModifiers() const LLVM_READONLY { 
-     return llvm::ArrayRef(MotionModifiers); 
-   } 
-   
-   /// Fetches ArrayRef of location of motion-modifiers. 
-   ArrayRef<SourceLocation> getMotionModifiersLoc() const LLVM_READONLY { 
-     return llvm::ArrayRef(MotionModifiersLoc); 
-   } 
-   
-   /// Get colon location. 
-   SourceLocation getColonLoc() const { return ColonLoc; } 
-   
-   child_range children() { 
-     return child_range(reinterpret_cast<Stmt **>(varlist_begin()), 
-                        reinterpret_cast<Stmt **>(varlist_end())); 
-   } 
-   
-   const_child_range children() const { 
-     auto Children = const_cast<OMPToClause *>(this)->children(); 
-     return const_child_range(Children.begin(), Children.end()); 
-   } 
-   
-   child_range used_children() { 
-     return child_range(child_iterator(), child_iterator()); 
-   } 
-   const_child_range used_children() const { 
-     return const_child_range(const_child_iterator(), const_child_iterator()); 
-   } 
-   
-   static bool classof(const OMPClause *T) { 
-     return T->getClauseKind() == llvm::omp::OMPC_to; 
-   } 
- }; 
-   
- /// This represents clause 'from' in the '#pragma omp ...' 
- /// directives. 
- /// 
- /// \code 
- /// #pragma omp target update from(a,b) 
- /// \endcode 
- /// In this example directive '#pragma omp target update' has clause 'from' 
- /// with the variables 'a' and 'b'. 
- class OMPFromClause final 
-     : public OMPMappableExprListClause<OMPFromClause>, 
-       private llvm::TrailingObjects< 
-           OMPFromClause, Expr *, ValueDecl *, unsigned, 
-           OMPClauseMappableExprCommon::MappableComponent> { 
-   friend class OMPClauseReader; 
-   friend OMPMappableExprListClause; 
-   friend OMPVarListClause; 
-   friend TrailingObjects; 
-   
-   /// Motion-modifiers for the 'from' clause. 
-   OpenMPMotionModifierKind MotionModifiers[NumberOfOMPMotionModifiers] = { 
-       OMPC_MOTION_MODIFIER_unknown, OMPC_MOTION_MODIFIER_unknown}; 
-   
-   /// Location of motion-modifiers for the 'from' clause. 
-   SourceLocation MotionModifiersLoc[NumberOfOMPMotionModifiers]; 
-   
-   /// Colon location. 
-   SourceLocation ColonLoc; 
-   
-   /// Build clause with number of variables \a NumVars. 
-   /// 
-   /// \param TheMotionModifiers Motion-modifiers. 
-   /// \param TheMotionModifiersLoc Locations of motion-modifiers. 
-   /// \param MapperQualifierLoc C++ nested name specifier for the associated 
-   /// user-defined mapper. 
-   /// \param MapperIdInfo The identifier of associated user-defined mapper. 
-   /// \param Locs Locations needed to build a mappable clause. It includes 1) 
-   /// StartLoc: starting location of the clause (the clause keyword); 2) 
-   /// LParenLoc: location of '('; 3) EndLoc: ending location of the clause. 
-   /// \param Sizes All required sizes to build a mappable clause. It includes 1) 
-   /// NumVars: number of expressions listed in this clause; 2) 
-   /// NumUniqueDeclarations: number of unique base declarations in this clause; 
-   /// 3) NumComponentLists: number of component lists in this clause; and 4) 
-   /// NumComponents: total number of expression components in the clause. 
-   explicit OMPFromClause(ArrayRef<OpenMPMotionModifierKind> TheMotionModifiers, 
-                          ArrayRef<SourceLocation> TheMotionModifiersLoc, 
-                          NestedNameSpecifierLoc MapperQualifierLoc, 
-                          DeclarationNameInfo MapperIdInfo, 
-                          const OMPVarListLocTy &Locs, 
-                          const OMPMappableExprListSizeTy &Sizes) 
-       : OMPMappableExprListClause(llvm::omp::OMPC_from, Locs, Sizes, 
-                                   /*SupportsMapper=*/true, &MapperQualifierLoc, 
-                                   &MapperIdInfo) { 
-     assert(std::size(MotionModifiers) == TheMotionModifiers.size() && 
-            "Unexpected number of motion modifiers."); 
-     llvm::copy(TheMotionModifiers, std::begin(MotionModifiers)); 
-   
-     assert(std::size(MotionModifiersLoc) == TheMotionModifiersLoc.size() && 
-            "Unexpected number of motion modifier locations."); 
-     llvm::copy(TheMotionModifiersLoc, std::begin(MotionModifiersLoc)); 
-   } 
-   
-   /// Build an empty clause. 
-   /// 
-   /// \param Sizes All required sizes to build a mappable clause. It includes 1) 
-   /// NumVars: number of expressions listed in this clause; 2) 
-   /// NumUniqueDeclarations: number of unique base declarations in this clause; 
-   /// 3) NumComponentLists: number of component lists in this clause; and 4) 
-   /// NumComponents: total number of expression components in the clause. 
-   explicit OMPFromClause(const OMPMappableExprListSizeTy &Sizes) 
-       : OMPMappableExprListClause(llvm::omp::OMPC_from, OMPVarListLocTy(), 
-                                   Sizes, /*SupportsMapper=*/true) {} 
-   
-   /// Set motion-modifier for the clause. 
-   /// 
-   /// \param I index for motion-modifier. 
-   /// \param T motion-modifier for the clause. 
-   void setMotionModifier(unsigned I, OpenMPMotionModifierKind T) { 
-     assert(I < NumberOfOMPMotionModifiers && 
-            "Unexpected index to store motion modifier, exceeds array size."); 
-     MotionModifiers[I] = T; 
-   } 
-   
-   /// Set location for the motion-modifier. 
-   /// 
-   /// \param I index for motion-modifier location. 
-   /// \param TLoc motion-modifier location. 
-   void setMotionModifierLoc(unsigned I, SourceLocation TLoc) { 
-     assert(I < NumberOfOMPMotionModifiers && 
-            "Index to store motion modifier location exceeds array size."); 
-     MotionModifiersLoc[I] = TLoc; 
-   } 
-   
-   /// Set colon location. 
-   void setColonLoc(SourceLocation Loc) { ColonLoc = Loc; } 
-   
-   /// Define the sizes of each trailing object array except the last one. This 
-   /// is required for TrailingObjects to work properly. 
-   size_t numTrailingObjects(OverloadToken<Expr *>) const { 
-     // There are varlist_size() of expressions, and varlist_size() of 
-     // user-defined mappers. 
-     return 2 * varlist_size(); 
-   } 
-   size_t numTrailingObjects(OverloadToken<ValueDecl *>) const { 
-     return getUniqueDeclarationsNum(); 
-   } 
-   size_t numTrailingObjects(OverloadToken<unsigned>) const { 
-     return getUniqueDeclarationsNum() + getTotalComponentListNum(); 
-   } 
-   
- public: 
-   /// Creates clause with a list of variables \a Vars. 
-   /// 
-   /// \param C AST context. 
-   /// \param Locs Locations needed to build a mappable clause. It includes 1) 
-   /// StartLoc: starting location of the clause (the clause keyword); 2) 
-   /// LParenLoc: location of '('; 3) EndLoc: ending location of the clause. 
-   /// \param Vars The original expression used in the clause. 
-   /// \param Declarations Declarations used in the clause. 
-   /// \param ComponentLists Component lists used in the clause. 
-   /// \param MotionModifiers Motion-modifiers. 
-   /// \param MotionModifiersLoc Location of motion-modifiers. 
-   /// \param UDMapperRefs References to user-defined mappers associated with 
-   /// expressions used in the clause. 
-   /// \param UDMQualifierLoc C++ nested name specifier for the associated 
-   /// user-defined mapper. 
-   /// \param MapperId The identifier of associated user-defined mapper. 
-   static OMPFromClause * 
-   Create(const ASTContext &C, const OMPVarListLocTy &Locs, 
-          ArrayRef<Expr *> Vars, ArrayRef<ValueDecl *> Declarations, 
-          MappableExprComponentListsRef ComponentLists, 
-          ArrayRef<Expr *> UDMapperRefs, 
-          ArrayRef<OpenMPMotionModifierKind> MotionModifiers, 
-          ArrayRef<SourceLocation> MotionModifiersLoc, 
-          NestedNameSpecifierLoc UDMQualifierLoc, DeclarationNameInfo MapperId); 
-   
-   /// Creates an empty clause with the place for \a NumVars variables. 
-   /// 
-   /// \param C AST context. 
-   /// \param Sizes All required sizes to build a mappable clause. It includes 1) 
-   /// NumVars: number of expressions listed in this clause; 2) 
-   /// NumUniqueDeclarations: number of unique base declarations in this clause; 
-   /// 3) NumComponentLists: number of component lists in this clause; and 4) 
-   /// NumComponents: total number of expression components in the clause. 
-   static OMPFromClause *CreateEmpty(const ASTContext &C, 
-                                     const OMPMappableExprListSizeTy &Sizes); 
-   
-   /// Fetches the motion-modifier at 'Cnt' index of array of modifiers. 
-   /// 
-   /// \param Cnt index for motion-modifier. 
-   OpenMPMotionModifierKind getMotionModifier(unsigned Cnt) const LLVM_READONLY { 
-     assert(Cnt < NumberOfOMPMotionModifiers && 
-            "Requested modifier exceeds the total number of modifiers."); 
-     return MotionModifiers[Cnt]; 
-   } 
-   
-   /// Fetches the motion-modifier location at 'Cnt' index of array of modifiers' 
-   /// locations. 
-   /// 
-   /// \param Cnt index for motion-modifier location. 
-   SourceLocation getMotionModifierLoc(unsigned Cnt) const LLVM_READONLY { 
-     assert(Cnt < NumberOfOMPMotionModifiers && 
-            "Requested modifier location exceeds total number of modifiers."); 
-     return MotionModifiersLoc[Cnt]; 
-   } 
-   
-   /// Fetches ArrayRef of motion-modifiers. 
-   ArrayRef<OpenMPMotionModifierKind> getMotionModifiers() const LLVM_READONLY { 
-     return llvm::ArrayRef(MotionModifiers); 
-   } 
-   
-   /// Fetches ArrayRef of location of motion-modifiers. 
-   ArrayRef<SourceLocation> getMotionModifiersLoc() const LLVM_READONLY { 
-     return llvm::ArrayRef(MotionModifiersLoc); 
-   } 
-   
-   /// Get colon location. 
-   SourceLocation getColonLoc() const { return ColonLoc; } 
-   
-   child_range children() { 
-     return child_range(reinterpret_cast<Stmt **>(varlist_begin()), 
-                        reinterpret_cast<Stmt **>(varlist_end())); 
-   } 
-   
-   const_child_range children() const { 
-     auto Children = const_cast<OMPFromClause *>(this)->children(); 
-     return const_child_range(Children.begin(), Children.end()); 
-   } 
-   
-   child_range used_children() { 
-     return child_range(child_iterator(), child_iterator()); 
-   } 
-   const_child_range used_children() const { 
-     return const_child_range(const_child_iterator(), const_child_iterator()); 
-   } 
-   
-   static bool classof(const OMPClause *T) { 
-     return T->getClauseKind() == llvm::omp::OMPC_from; 
-   } 
- }; 
-   
- /// This represents clause 'use_device_ptr' in the '#pragma omp ...' 
- /// directives. 
- /// 
- /// \code 
- /// #pragma omp target data use_device_ptr(a,b) 
- /// \endcode 
- /// In this example directive '#pragma omp target data' has clause 
- /// 'use_device_ptr' with the variables 'a' and 'b'. 
- class OMPUseDevicePtrClause final 
-     : public OMPMappableExprListClause<OMPUseDevicePtrClause>, 
-       private llvm::TrailingObjects< 
-           OMPUseDevicePtrClause, Expr *, ValueDecl *, unsigned, 
-           OMPClauseMappableExprCommon::MappableComponent> { 
-   friend class OMPClauseReader; 
-   friend OMPMappableExprListClause; 
-   friend OMPVarListClause; 
-   friend TrailingObjects; 
-   
-   /// Build clause with number of variables \a NumVars. 
-   /// 
-   /// \param Locs Locations needed to build a mappable clause. It includes 1) 
-   /// StartLoc: starting location of the clause (the clause keyword); 2) 
-   /// LParenLoc: location of '('; 3) EndLoc: ending location of the clause. 
-   /// \param Sizes All required sizes to build a mappable clause. It includes 1) 
-   /// NumVars: number of expressions listed in this clause; 2) 
-   /// NumUniqueDeclarations: number of unique base declarations in this clause; 
-   /// 3) NumComponentLists: number of component lists in this clause; and 4) 
-   /// NumComponents: total number of expression components in the clause. 
-   explicit OMPUseDevicePtrClause(const OMPVarListLocTy &Locs, 
-                                  const OMPMappableExprListSizeTy &Sizes) 
-       : OMPMappableExprListClause(llvm::omp::OMPC_use_device_ptr, Locs, Sizes) { 
-   } 
-   
-   /// Build an empty clause. 
-   /// 
-   /// \param Sizes All required sizes to build a mappable clause. It includes 1) 
-   /// NumVars: number of expressions listed in this clause; 2) 
-   /// NumUniqueDeclarations: number of unique base declarations in this clause; 
-   /// 3) NumComponentLists: number of component lists in this clause; and 4) 
-   /// NumComponents: total number of expression components in the clause. 
-   explicit OMPUseDevicePtrClause(const OMPMappableExprListSizeTy &Sizes) 
-       : OMPMappableExprListClause(llvm::omp::OMPC_use_device_ptr, 
-                                   OMPVarListLocTy(), Sizes) {} 
-   
-   /// Define the sizes of each trailing object array except the last one. This 
-   /// is required for TrailingObjects to work properly. 
-   size_t numTrailingObjects(OverloadToken<Expr *>) const { 
-     return 3 * varlist_size(); 
-   } 
-   size_t numTrailingObjects(OverloadToken<ValueDecl *>) const { 
-     return getUniqueDeclarationsNum(); 
-   } 
-   size_t numTrailingObjects(OverloadToken<unsigned>) const { 
-     return getUniqueDeclarationsNum() + getTotalComponentListNum(); 
-   } 
-   
-   /// Sets the list of references to private copies with initializers for new 
-   /// private variables. 
-   /// \param VL List of references. 
-   void setPrivateCopies(ArrayRef<Expr *> VL); 
-   
-   /// Gets the list of references to private copies with initializers for new 
-   /// private variables. 
-   MutableArrayRef<Expr *> getPrivateCopies() { 
-     return MutableArrayRef<Expr *>(varlist_end(), varlist_size()); 
-   } 
-   ArrayRef<const Expr *> getPrivateCopies() const { 
-     return llvm::ArrayRef(varlist_end(), varlist_size()); 
-   } 
-   
-   /// Sets the list of references to initializer variables for new private 
-   /// variables. 
-   /// \param VL List of references. 
-   void setInits(ArrayRef<Expr *> VL); 
-   
-   /// Gets the list of references to initializer variables for new private 
-   /// variables. 
-   MutableArrayRef<Expr *> getInits() { 
-     return MutableArrayRef<Expr *>(getPrivateCopies().end(), varlist_size()); 
-   } 
-   ArrayRef<const Expr *> getInits() const { 
-     return llvm::ArrayRef(getPrivateCopies().end(), varlist_size()); 
-   } 
-   
- public: 
-   /// Creates clause with a list of variables \a Vars. 
-   /// 
-   /// \param C AST context. 
-   /// \param Locs Locations needed to build a mappable clause. It includes 1) 
-   /// StartLoc: starting location of the clause (the clause keyword); 2) 
-   /// LParenLoc: location of '('; 3) EndLoc: ending location of the clause. 
-   /// \param Vars The original expression used in the clause. 
-   /// \param PrivateVars Expressions referring to private copies. 
-   /// \param Inits Expressions referring to private copy initializers. 
-   /// \param Declarations Declarations used in the clause. 
-   /// \param ComponentLists Component lists used in the clause. 
-   static OMPUseDevicePtrClause * 
-   Create(const ASTContext &C, const OMPVarListLocTy &Locs, 
-          ArrayRef<Expr *> Vars, ArrayRef<Expr *> PrivateVars, 
-          ArrayRef<Expr *> Inits, ArrayRef<ValueDecl *> Declarations, 
-          MappableExprComponentListsRef ComponentLists); 
-   
-   /// Creates an empty clause with the place for \a NumVars variables. 
-   /// 
-   /// \param C AST context. 
-   /// \param Sizes All required sizes to build a mappable clause. It includes 1) 
-   /// NumVars: number of expressions listed in this clause; 2) 
-   /// NumUniqueDeclarations: number of unique base declarations in this clause; 
-   /// 3) NumComponentLists: number of component lists in this clause; and 4) 
-   /// NumComponents: total number of expression components in the clause. 
-   static OMPUseDevicePtrClause * 
-   CreateEmpty(const ASTContext &C, const OMPMappableExprListSizeTy &Sizes); 
-   
-   using private_copies_iterator = MutableArrayRef<Expr *>::iterator; 
-   using private_copies_const_iterator = ArrayRef<const Expr *>::iterator; 
-   using private_copies_range = llvm::iterator_range<private_copies_iterator>; 
-   using private_copies_const_range = 
-       llvm::iterator_range<private_copies_const_iterator>; 
-   
-   private_copies_range private_copies() { 
-     return private_copies_range(getPrivateCopies().begin(), 
-                                 getPrivateCopies().end()); 
-   } 
-   
-   private_copies_const_range private_copies() const { 
-     return private_copies_const_range(getPrivateCopies().begin(), 
-                                       getPrivateCopies().end()); 
-   } 
-   
-   using inits_iterator = MutableArrayRef<Expr *>::iterator; 
-   using inits_const_iterator = ArrayRef<const Expr *>::iterator; 
-   using inits_range = llvm::iterator_range<inits_iterator>; 
-   using inits_const_range = llvm::iterator_range<inits_const_iterator>; 
-   
-   inits_range inits() { 
-     return inits_range(getInits().begin(), getInits().end()); 
-   } 
-   
-   inits_const_range inits() const { 
-     return inits_const_range(getInits().begin(), getInits().end()); 
-   } 
-   
-   child_range children() { 
-     return child_range(reinterpret_cast<Stmt **>(varlist_begin()), 
-                        reinterpret_cast<Stmt **>(varlist_end())); 
-   } 
-   
-   const_child_range children() const { 
-     auto Children = const_cast<OMPUseDevicePtrClause *>(this)->children(); 
-     return const_child_range(Children.begin(), Children.end()); 
-   } 
-   
-   child_range used_children() { 
-     return child_range(child_iterator(), child_iterator()); 
-   } 
-   const_child_range used_children() const { 
-     return const_child_range(const_child_iterator(), const_child_iterator()); 
-   } 
-   
-   static bool classof(const OMPClause *T) { 
-     return T->getClauseKind() == llvm::omp::OMPC_use_device_ptr; 
-   } 
- }; 
-   
- /// This represents clause 'use_device_addr' in the '#pragma omp ...' 
- /// directives. 
- /// 
- /// \code 
- /// #pragma omp target data use_device_addr(a,b) 
- /// \endcode 
- /// In this example directive '#pragma omp target data' has clause 
- /// 'use_device_addr' with the variables 'a' and 'b'. 
- class OMPUseDeviceAddrClause final 
-     : public OMPMappableExprListClause<OMPUseDeviceAddrClause>, 
-       private llvm::TrailingObjects< 
-           OMPUseDeviceAddrClause, Expr *, ValueDecl *, unsigned, 
-           OMPClauseMappableExprCommon::MappableComponent> { 
-   friend class OMPClauseReader; 
-   friend OMPMappableExprListClause; 
-   friend OMPVarListClause; 
-   friend TrailingObjects; 
-   
-   /// Build clause with number of variables \a NumVars. 
-   /// 
-   /// \param Locs Locations needed to build a mappable clause. It includes 1) 
-   /// StartLoc: starting location of the clause (the clause keyword); 2) 
-   /// LParenLoc: location of '('; 3) EndLoc: ending location of the clause. 
-   /// \param Sizes All required sizes to build a mappable clause. It includes 1) 
-   /// NumVars: number of expressions listed in this clause; 2) 
-   /// NumUniqueDeclarations: number of unique base declarations in this clause; 
-   /// 3) NumComponentLists: number of component lists in this clause; and 4) 
-   /// NumComponents: total number of expression components in the clause. 
-   explicit OMPUseDeviceAddrClause(const OMPVarListLocTy &Locs, 
-                                   const OMPMappableExprListSizeTy &Sizes) 
-       : OMPMappableExprListClause(llvm::omp::OMPC_use_device_addr, Locs, 
-                                   Sizes) {} 
-   
-   /// Build an empty clause. 
-   /// 
-   /// \param Sizes All required sizes to build a mappable clause. It includes 1) 
-   /// NumVars: number of expressions listed in this clause; 2) 
-   /// NumUniqueDeclarations: number of unique base declarations in this clause; 
-   /// 3) NumComponentLists: number of component lists in this clause; and 4) 
-   /// NumComponents: total number of expression components in the clause. 
-   explicit OMPUseDeviceAddrClause(const OMPMappableExprListSizeTy &Sizes) 
-       : OMPMappableExprListClause(llvm::omp::OMPC_use_device_addr, 
-                                   OMPVarListLocTy(), Sizes) {} 
-   
-   /// Define the sizes of each trailing object array except the last one. This 
-   /// is required for TrailingObjects to work properly. 
-   size_t numTrailingObjects(OverloadToken<Expr *>) const { 
-     return varlist_size(); 
-   } 
-   size_t numTrailingObjects(OverloadToken<ValueDecl *>) const { 
-     return getUniqueDeclarationsNum(); 
-   } 
-   size_t numTrailingObjects(OverloadToken<unsigned>) const { 
-     return getUniqueDeclarationsNum() + getTotalComponentListNum(); 
-   } 
-   
- public: 
-   /// Creates clause with a list of variables \a Vars. 
-   /// 
-   /// \param C AST context. 
-   /// \param Locs Locations needed to build a mappable clause. It includes 1) 
-   /// StartLoc: starting location of the clause (the clause keyword); 2) 
-   /// LParenLoc: location of '('; 3) EndLoc: ending location of the clause. 
-   /// \param Vars The original expression used in the clause. 
-   /// \param Declarations Declarations used in the clause. 
-   /// \param ComponentLists Component lists used in the clause. 
-   static OMPUseDeviceAddrClause * 
-   Create(const ASTContext &C, const OMPVarListLocTy &Locs, 
-          ArrayRef<Expr *> Vars, ArrayRef<ValueDecl *> Declarations, 
-          MappableExprComponentListsRef ComponentLists); 
-   
-   /// Creates an empty clause with the place for \a NumVars variables. 
-   /// 
-   /// \param C AST context. 
-   /// \param Sizes All required sizes to build a mappable clause. It includes 1) 
-   /// NumVars: number of expressions listed in this clause; 2) 
-   /// NumUniqueDeclarations: number of unique base declarations in this clause; 
-   /// 3) NumComponentLists: number of component lists in this clause; and 4) 
-   /// NumComponents: total number of expression components in the clause. 
-   static OMPUseDeviceAddrClause * 
-   CreateEmpty(const ASTContext &C, const OMPMappableExprListSizeTy &Sizes); 
-   
-   child_range children() { 
-     return child_range(reinterpret_cast<Stmt **>(varlist_begin()), 
-                        reinterpret_cast<Stmt **>(varlist_end())); 
-   } 
-   
-   const_child_range children() const { 
-     auto Children = const_cast<OMPUseDeviceAddrClause *>(this)->children(); 
-     return const_child_range(Children.begin(), Children.end()); 
-   } 
-   
-   child_range used_children() { 
-     return child_range(child_iterator(), child_iterator()); 
-   } 
-   const_child_range used_children() const { 
-     return const_child_range(const_child_iterator(), const_child_iterator()); 
-   } 
-   
-   static bool classof(const OMPClause *T) { 
-     return T->getClauseKind() == llvm::omp::OMPC_use_device_addr; 
-   } 
- }; 
-   
- /// This represents clause 'is_device_ptr' in the '#pragma omp ...' 
- /// directives. 
- /// 
- /// \code 
- /// #pragma omp target is_device_ptr(a,b) 
- /// \endcode 
- /// In this example directive '#pragma omp target' has clause 
- /// 'is_device_ptr' with the variables 'a' and 'b'. 
- class OMPIsDevicePtrClause final 
-     : public OMPMappableExprListClause<OMPIsDevicePtrClause>, 
-       private llvm::TrailingObjects< 
-           OMPIsDevicePtrClause, Expr *, ValueDecl *, unsigned, 
-           OMPClauseMappableExprCommon::MappableComponent> { 
-   friend class OMPClauseReader; 
-   friend OMPMappableExprListClause; 
-   friend OMPVarListClause; 
-   friend TrailingObjects; 
-   
-   /// Build clause with number of variables \a NumVars. 
-   /// 
-   /// \param Locs Locations needed to build a mappable clause. It includes 1) 
-   /// StartLoc: starting location of the clause (the clause keyword); 2) 
-   /// LParenLoc: location of '('; 3) EndLoc: ending location of the clause. 
-   /// \param Sizes All required sizes to build a mappable clause. It includes 1) 
-   /// NumVars: number of expressions listed in this clause; 2) 
-   /// NumUniqueDeclarations: number of unique base declarations in this clause; 
-   /// 3) NumComponentLists: number of component lists in this clause; and 4) 
-   /// NumComponents: total number of expression components in the clause. 
-   explicit OMPIsDevicePtrClause(const OMPVarListLocTy &Locs, 
-                                 const OMPMappableExprListSizeTy &Sizes) 
-       : OMPMappableExprListClause(llvm::omp::OMPC_is_device_ptr, Locs, Sizes) {} 
-   
-   /// Build an empty clause. 
-   /// 
-   /// \param Sizes All required sizes to build a mappable clause. It includes 1) 
-   /// NumVars: number of expressions listed in this clause; 2) 
-   /// NumUniqueDeclarations: number of unique base declarations in this clause; 
-   /// 3) NumComponentLists: number of component lists in this clause; and 4) 
-   /// NumComponents: total number of expression components in the clause. 
-   explicit OMPIsDevicePtrClause(const OMPMappableExprListSizeTy &Sizes) 
-       : OMPMappableExprListClause(llvm::omp::OMPC_is_device_ptr, 
-                                   OMPVarListLocTy(), Sizes) {} 
-   
-   /// Define the sizes of each trailing object array except the last one. This 
-   /// is required for TrailingObjects to work properly. 
-   size_t numTrailingObjects(OverloadToken<Expr *>) const { 
-     return varlist_size(); 
-   } 
-   size_t numTrailingObjects(OverloadToken<ValueDecl *>) const { 
-     return getUniqueDeclarationsNum(); 
-   } 
-   size_t numTrailingObjects(OverloadToken<unsigned>) const { 
-     return getUniqueDeclarationsNum() + getTotalComponentListNum(); 
-   } 
-   
- public: 
-   /// Creates clause with a list of variables \a Vars. 
-   /// 
-   /// \param C AST context. 
-   /// \param Locs Locations needed to build a mappable clause. It includes 1) 
-   /// StartLoc: starting location of the clause (the clause keyword); 2) 
-   /// LParenLoc: location of '('; 3) EndLoc: ending location of the clause. 
-   /// \param Vars The original expression used in the clause. 
-   /// \param Declarations Declarations used in the clause. 
-   /// \param ComponentLists Component lists used in the clause. 
-   static OMPIsDevicePtrClause * 
-   Create(const ASTContext &C, const OMPVarListLocTy &Locs, 
-          ArrayRef<Expr *> Vars, ArrayRef<ValueDecl *> Declarations, 
-          MappableExprComponentListsRef ComponentLists); 
-   
-   /// Creates an empty clause with the place for \a NumVars variables. 
-   /// 
-   /// \param C AST context. 
-   /// \param Sizes All required sizes to build a mappable clause. It includes 1) 
-   /// NumVars: number of expressions listed in this clause; 2) 
-   /// NumUniqueDeclarations: number of unique base declarations in this clause; 
-   /// 3) NumComponentLists: number of component lists in this clause; and 4) 
-   /// NumComponents: total number of expression components in the clause. 
-   static OMPIsDevicePtrClause * 
-   CreateEmpty(const ASTContext &C, const OMPMappableExprListSizeTy &Sizes); 
-   
-   child_range children() { 
-     return child_range(reinterpret_cast<Stmt **>(varlist_begin()), 
-                        reinterpret_cast<Stmt **>(varlist_end())); 
-   } 
-   
-   const_child_range children() const { 
-     auto Children = const_cast<OMPIsDevicePtrClause *>(this)->children(); 
-     return const_child_range(Children.begin(), Children.end()); 
-   } 
-   
-   child_range used_children() { 
-     return child_range(child_iterator(), child_iterator()); 
-   } 
-   const_child_range used_children() const { 
-     return const_child_range(const_child_iterator(), const_child_iterator()); 
-   } 
-   
-   static bool classof(const OMPClause *T) { 
-     return T->getClauseKind() == llvm::omp::OMPC_is_device_ptr; 
-   } 
- }; 
-   
- /// This represents clause 'has_device_ptr' in the '#pragma omp ...' 
- /// directives. 
- /// 
- /// \code 
- /// #pragma omp target has_device_addr(a,b) 
- /// \endcode 
- /// In this example directive '#pragma omp target' has clause 
- /// 'has_device_ptr' with the variables 'a' and 'b'. 
- class OMPHasDeviceAddrClause final 
-     : public OMPMappableExprListClause<OMPHasDeviceAddrClause>, 
-       private llvm::TrailingObjects< 
-           OMPHasDeviceAddrClause, Expr *, ValueDecl *, unsigned, 
-           OMPClauseMappableExprCommon::MappableComponent> { 
-   friend class OMPClauseReader; 
-   friend OMPMappableExprListClause; 
-   friend OMPVarListClause; 
-   friend TrailingObjects; 
-   
-   /// Build clause with number of variables \a NumVars. 
-   /// 
-   /// \param Locs Locations needed to build a mappable clause. It includes 1) 
-   /// StartLoc: starting location of the clause (the clause keyword); 2) 
-   /// LParenLoc: location of '('; 3) EndLoc: ending location of the clause. 
-   /// \param Sizes All required sizes to build a mappable clause. It includes 1) 
-   /// NumVars: number of expressions listed in this clause; 2) 
-   /// NumUniqueDeclarations: number of unique base declarations in this clause; 
-   /// 3) NumComponentLists: number of component lists in this clause; and 4) 
-   /// NumComponents: total number of expression components in the clause. 
-   explicit OMPHasDeviceAddrClause(const OMPVarListLocTy &Locs, 
-                                   const OMPMappableExprListSizeTy &Sizes) 
-       : OMPMappableExprListClause(llvm::omp::OMPC_has_device_addr, Locs, 
-                                   Sizes) {} 
-   
-   /// Build an empty clause. 
-   /// 
-   /// \param Sizes All required sizes to build a mappable clause. It includes 1) 
-   /// NumVars: number of expressions listed in this clause; 2) 
-   /// NumUniqueDeclarations: number of unique base declarations in this clause; 
-   /// 3) NumComponentLists: number of component lists in this clause; and 4) 
-   /// NumComponents: total number of expression components in the clause. 
-   explicit OMPHasDeviceAddrClause(const OMPMappableExprListSizeTy &Sizes) 
-       : OMPMappableExprListClause(llvm::omp::OMPC_has_device_addr, 
-                                   OMPVarListLocTy(), Sizes) {} 
-   
-   /// Define the sizes of each trailing object array except the last one. This 
-   /// is required for TrailingObjects to work properly. 
-   size_t numTrailingObjects(OverloadToken<Expr *>) const { 
-     return varlist_size(); 
-   } 
-   size_t numTrailingObjects(OverloadToken<ValueDecl *>) const { 
-     return getUniqueDeclarationsNum(); 
-   } 
-   size_t numTrailingObjects(OverloadToken<unsigned>) const { 
-     return getUniqueDeclarationsNum() + getTotalComponentListNum(); 
-   } 
-   
- public: 
-   /// Creates clause with a list of variables \a Vars. 
-   /// 
-   /// \param C AST context. 
-   /// \param Locs Locations needed to build a mappable clause. It includes 1) 
-   /// StartLoc: starting location of the clause (the clause keyword); 2) 
-   /// LParenLoc: location of '('; 3) EndLoc: ending location of the clause. 
-   /// \param Vars The original expression used in the clause. 
-   /// \param Declarations Declarations used in the clause. 
-   /// \param ComponentLists Component lists used in the clause. 
-   static OMPHasDeviceAddrClause * 
-   Create(const ASTContext &C, const OMPVarListLocTy &Locs, 
-          ArrayRef<Expr *> Vars, ArrayRef<ValueDecl *> Declarations, 
-          MappableExprComponentListsRef ComponentLists); 
-   
-   /// Creates an empty clause with the place for \a NumVars variables. 
-   /// 
-   /// \param C AST context. 
-   /// \param Sizes All required sizes to build a mappable clause. It includes 1) 
-   /// NumVars: number of expressions listed in this clause; 2) 
-   /// NumUniqueDeclarations: number of unique base declarations in this clause; 
-   /// 3) NumComponentLists: number of component lists in this clause; and 4) 
-   /// NumComponents: total number of expression components in the clause. 
-   static OMPHasDeviceAddrClause * 
-   CreateEmpty(const ASTContext &C, const OMPMappableExprListSizeTy &Sizes); 
-   
-   child_range children() { 
-     return child_range(reinterpret_cast<Stmt **>(varlist_begin()), 
-                        reinterpret_cast<Stmt **>(varlist_end())); 
-   } 
-   
-   const_child_range children() const { 
-     auto Children = const_cast<OMPHasDeviceAddrClause *>(this)->children(); 
-     return const_child_range(Children.begin(), Children.end()); 
-   } 
-   
-   child_range used_children() { 
-     return child_range(child_iterator(), child_iterator()); 
-   } 
-   const_child_range used_children() const { 
-     return const_child_range(const_child_iterator(), const_child_iterator()); 
-   } 
-   
-   static bool classof(const OMPClause *T) { 
-     return T->getClauseKind() == llvm::omp::OMPC_has_device_addr; 
-   } 
- }; 
-   
- /// This represents clause 'nontemporal' in the '#pragma omp ...' directives. 
- /// 
- /// \code 
- /// #pragma omp simd nontemporal(a) 
- /// \endcode 
- /// In this example directive '#pragma omp simd' has clause 'nontemporal' for 
- /// the variable 'a'. 
- class OMPNontemporalClause final 
-     : public OMPVarListClause<OMPNontemporalClause>, 
-       private llvm::TrailingObjects<OMPNontemporalClause, Expr *> { 
-   friend class OMPClauseReader; 
-   friend OMPVarListClause; 
-   friend TrailingObjects; 
-   
-   /// Build clause with number of variables \a N. 
-   /// 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param LParenLoc Location of '('. 
-   /// \param EndLoc Ending location of the clause. 
-   /// \param N Number of the variables in the clause. 
-   OMPNontemporalClause(SourceLocation StartLoc, SourceLocation LParenLoc, 
-                        SourceLocation EndLoc, unsigned N) 
-       : OMPVarListClause<OMPNontemporalClause>(llvm::omp::OMPC_nontemporal, 
-                                                StartLoc, LParenLoc, EndLoc, N) { 
-   } 
-   
-   /// Build an empty clause. 
-   /// 
-   /// \param N Number of variables. 
-   explicit OMPNontemporalClause(unsigned N) 
-       : OMPVarListClause<OMPNontemporalClause>( 
-             llvm::omp::OMPC_nontemporal, SourceLocation(), SourceLocation(), 
-             SourceLocation(), N) {} 
-   
-   /// Get the list of privatied copies if the member expression was captured by 
-   /// one of the privatization clauses. 
-   MutableArrayRef<Expr *> getPrivateRefs() { 
-     return MutableArrayRef<Expr *>(varlist_end(), varlist_size()); 
-   } 
-   ArrayRef<const Expr *> getPrivateRefs() const { 
-     return llvm::ArrayRef(varlist_end(), varlist_size()); 
-   } 
-   
- public: 
-   /// Creates clause with a list of variables \a VL. 
-   /// 
-   /// \param C AST context. 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param LParenLoc Location of '('. 
-   /// \param EndLoc Ending location of the clause. 
-   /// \param VL List of references to the variables. 
-   static OMPNontemporalClause * 
-   Create(const ASTContext &C, SourceLocation StartLoc, SourceLocation LParenLoc, 
-          SourceLocation EndLoc, ArrayRef<Expr *> VL); 
-   
-   /// Creates an empty clause with the place for \a N variables. 
-   /// 
-   /// \param C AST context. 
-   /// \param N The number of variables. 
-   static OMPNontemporalClause *CreateEmpty(const ASTContext &C, unsigned N); 
-   
-   /// Sets the list of references to private copies created in private clauses. 
-   /// \param VL List of references. 
-   void setPrivateRefs(ArrayRef<Expr *> VL); 
-   
-   child_range children() { 
-     return child_range(reinterpret_cast<Stmt **>(varlist_begin()), 
-                        reinterpret_cast<Stmt **>(varlist_end())); 
-   } 
-   
-   const_child_range children() const { 
-     auto Children = const_cast<OMPNontemporalClause *>(this)->children(); 
-     return const_child_range(Children.begin(), Children.end()); 
-   } 
-   
-   child_range private_refs() { 
-     return child_range(reinterpret_cast<Stmt **>(getPrivateRefs().begin()), 
-                        reinterpret_cast<Stmt **>(getPrivateRefs().end())); 
-   } 
-   
-   const_child_range private_refs() const { 
-     auto Children = const_cast<OMPNontemporalClause *>(this)->private_refs(); 
-     return const_child_range(Children.begin(), Children.end()); 
-   } 
-   
-   child_range used_children() { 
-     return child_range(child_iterator(), child_iterator()); 
-   } 
-   const_child_range used_children() const { 
-     return const_child_range(const_child_iterator(), const_child_iterator()); 
-   } 
-   
-   static bool classof(const OMPClause *T) { 
-     return T->getClauseKind() == llvm::omp::OMPC_nontemporal; 
-   } 
- }; 
-   
- /// This represents 'order' clause in the '#pragma omp ...' directive. 
- /// 
- /// \code 
- /// #pragma omp simd order(concurrent) 
- /// \endcode 
- /// In this example directive '#pragma omp parallel' has simple 'order' 
- /// clause with kind 'concurrent'. 
- class OMPOrderClause final : public OMPClause { 
-   friend class OMPClauseReader; 
-   
-   /// Location of '('. 
-   SourceLocation LParenLoc; 
-   
-   /// A kind of the 'order' clause. 
-   OpenMPOrderClauseKind Kind = OMPC_ORDER_unknown; 
-   
-   /// Start location of the kind in source code. 
-   SourceLocation KindKwLoc; 
-   
-   /// A modifier for order clause 
-   OpenMPOrderClauseModifier Modifier = OMPC_ORDER_MODIFIER_unknown; 
-   
-   /// Start location of the modifier in source code. 
-   SourceLocation ModifierKwLoc; 
-   
-   /// Set kind of the clause. 
-   /// 
-   /// \param K Argument of clause. 
-   void setKind(OpenMPOrderClauseKind K) { Kind = K; } 
-   
-   /// Set argument location. 
-   /// 
-   /// \param KLoc Argument location. 
-   void setKindKwLoc(SourceLocation KLoc) { KindKwLoc = KLoc; } 
-   
-   /// Set modifier of the clause. 
-   /// 
-   /// \param M Argument of clause. 
-   void setModifier(OpenMPOrderClauseModifier M) { Modifier = M; } 
-   
-   /// Set modifier location. 
-   /// 
-   /// \param MLoc Modifier keyword location. 
-   void setModifierKwLoc(SourceLocation MLoc) { ModifierKwLoc = MLoc; } 
-   
- public: 
-   /// Build 'order' clause with argument \p A ('concurrent'). 
-   /// 
-   /// \param A Argument of the clause ('concurrent'). 
-   /// \param ALoc Starting location of the argument. 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param LParenLoc Location of '('. 
-   /// \param EndLoc Ending location of the clause. 
-   /// \param Modifier The modifier applied to 'order' clause. 
-   /// \param MLoc Location of the modifier 
-   OMPOrderClause(OpenMPOrderClauseKind A, SourceLocation ALoc, 
-                  SourceLocation StartLoc, SourceLocation LParenLoc, 
-                  SourceLocation EndLoc, OpenMPOrderClauseModifier M, 
-                  SourceLocation MLoc) 
-       : OMPClause(llvm::omp::OMPC_order, StartLoc, EndLoc), 
-         LParenLoc(LParenLoc), Kind(A), KindKwLoc(ALoc), Modifier(M), 
-         ModifierKwLoc(MLoc) {} 
-   
-   /// Build an empty clause. 
-   OMPOrderClause() 
-       : OMPClause(llvm::omp::OMPC_order, SourceLocation(), SourceLocation()) {} 
-   
-   /// Sets the location of '('. 
-   void setLParenLoc(SourceLocation Loc) { LParenLoc = Loc; } 
-   
-   /// Returns the location of '('. 
-   SourceLocation getLParenLoc() const { return LParenLoc; } 
-   
-   /// Returns kind of the clause. 
-   OpenMPOrderClauseKind getKind() const { return Kind; } 
-   
-   /// Returns location of clause kind. 
-   SourceLocation getKindKwLoc() const { return KindKwLoc; } 
-   
-   /// Returns Modifier of the clause. 
-   OpenMPOrderClauseModifier getModifier() const { return Modifier; } 
-   
-   /// Returns location of clause modifier. 
-   SourceLocation getModifierKwLoc() const { return ModifierKwLoc; } 
-   
-   child_range children() { 
-     return child_range(child_iterator(), child_iterator()); 
-   } 
-   
-   const_child_range children() const { 
-     return const_child_range(const_child_iterator(), const_child_iterator()); 
-   } 
-   
-   child_range used_children() { 
-     return child_range(child_iterator(), child_iterator()); 
-   } 
-   const_child_range used_children() const { 
-     return const_child_range(const_child_iterator(), const_child_iterator()); 
-   } 
-   
-   static bool classof(const OMPClause *T) { 
-     return T->getClauseKind() == llvm::omp::OMPC_order; 
-   } 
- }; 
-   
- /// This represents the 'init' clause in '#pragma omp ...' directives. 
- /// 
- /// \code 
- /// #pragma omp interop init(target:obj) 
- /// \endcode 
- class OMPInitClause final 
-     : public OMPVarListClause<OMPInitClause>, 
-       private llvm::TrailingObjects<OMPInitClause, Expr *> { 
-   friend class OMPClauseReader; 
-   friend OMPVarListClause; 
-   friend TrailingObjects; 
-   
-   /// Location of interop variable. 
-   SourceLocation VarLoc; 
-   
-   bool IsTarget = false; 
-   bool IsTargetSync = false; 
-   
-   void setInteropVar(Expr *E) { varlist_begin()[0] = E; } 
-   
-   void setIsTarget(bool V) { IsTarget = V; } 
-   
-   void setIsTargetSync(bool V) { IsTargetSync = V; } 
-   
-   /// Sets the location of the interop variable. 
-   void setVarLoc(SourceLocation Loc) { VarLoc = Loc; } 
-   
-   /// Build 'init' clause. 
-   /// 
-   /// \param IsTarget Uses the 'target' interop-type. 
-   /// \param IsTargetSync Uses the 'targetsync' interop-type. 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param LParenLoc Location of '('. 
-   /// \param VarLoc Location of the interop variable. 
-   /// \param EndLoc Ending location of the clause. 
-   /// \param N Number of expressions. 
-   OMPInitClause(bool IsTarget, bool IsTargetSync, SourceLocation StartLoc, 
-                 SourceLocation LParenLoc, SourceLocation VarLoc, 
-                 SourceLocation EndLoc, unsigned N) 
-       : OMPVarListClause<OMPInitClause>(llvm::omp::OMPC_init, StartLoc, 
-                                         LParenLoc, EndLoc, N), 
-         VarLoc(VarLoc), IsTarget(IsTarget), IsTargetSync(IsTargetSync) {} 
-   
-   /// Build an empty clause. 
-   OMPInitClause(unsigned N) 
-       : OMPVarListClause<OMPInitClause>(llvm::omp::OMPC_init, SourceLocation(), 
-                                         SourceLocation(), SourceLocation(), N) { 
-   } 
-   
- public: 
-   /// Creates a fully specified clause. 
-   /// 
-   /// \param C AST context. 
-   /// \param InteropVar The interop variable. 
-   /// \param InteropInfo The interop-type and prefer_type list. 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param LParenLoc Location of '('. 
-   /// \param VarLoc Location of the interop variable. 
-   /// \param EndLoc Ending location of the clause. 
-   static OMPInitClause *Create(const ASTContext &C, Expr *InteropVar, 
-                                OMPInteropInfo &InteropInfo, 
-                                SourceLocation StartLoc, 
-                                SourceLocation LParenLoc, SourceLocation VarLoc, 
-                                SourceLocation EndLoc); 
-   
-   /// Creates an empty clause with \a N expressions. 
-   /// 
-   /// \param C AST context. 
-   /// \param N Number of expression items. 
-   static OMPInitClause *CreateEmpty(const ASTContext &C, unsigned N); 
-   
-   /// Returns the location of the interop variable. 
-   SourceLocation getVarLoc() const { return VarLoc; } 
-   
-   /// Returns the interop variable. 
-   Expr *getInteropVar() { return varlist_begin()[0]; } 
-   const Expr *getInteropVar() const { return varlist_begin()[0]; } 
-   
-   /// Returns true is interop-type 'target' is used. 
-   bool getIsTarget() const { return IsTarget; } 
-   
-   /// Returns true is interop-type 'targetsync' is used. 
-   bool getIsTargetSync() const { return IsTargetSync; } 
-   
-   child_range children() { 
-     return child_range(reinterpret_cast<Stmt **>(varlist_begin()), 
-                        reinterpret_cast<Stmt **>(varlist_end())); 
-   } 
-   
-   const_child_range children() const { 
-     auto Children = const_cast<OMPInitClause *>(this)->children(); 
-     return const_child_range(Children.begin(), Children.end()); 
-   } 
-   
-   child_range used_children() { 
-     return child_range(child_iterator(), child_iterator()); 
-   } 
-   const_child_range used_children() const { 
-     return const_child_range(const_child_iterator(), const_child_iterator()); 
-   } 
-   
-   using prefs_iterator = MutableArrayRef<Expr *>::iterator; 
-   using const_prefs_iterator = ArrayRef<const Expr *>::iterator; 
-   using prefs_range = llvm::iterator_range<prefs_iterator>; 
-   using const_prefs_range = llvm::iterator_range<const_prefs_iterator>; 
-   
-   prefs_range prefs() { 
-     return prefs_range(reinterpret_cast<Expr **>(std::next(varlist_begin())), 
-                        reinterpret_cast<Expr **>(varlist_end())); 
-   } 
-   
-   const_prefs_range prefs() const { 
-     auto Prefs = const_cast<OMPInitClause *>(this)->prefs(); 
-     return const_prefs_range(Prefs.begin(), Prefs.end()); 
-   } 
-   
-   static bool classof(const OMPClause *T) { 
-     return T->getClauseKind() == llvm::omp::OMPC_init; 
-   } 
- }; 
-   
- /// This represents the 'use' clause in '#pragma omp ...' directives. 
- /// 
- /// \code 
- /// #pragma omp interop use(obj) 
- /// \endcode 
- class OMPUseClause final : public OMPClause { 
-   friend class OMPClauseReader; 
-   
-   /// Location of '('. 
-   SourceLocation LParenLoc; 
-   
-   /// Location of interop variable. 
-   SourceLocation VarLoc; 
-   
-   /// The interop variable. 
-   Stmt *InteropVar = nullptr; 
-   
-   /// Set the interop variable. 
-   void setInteropVar(Expr *E) { InteropVar = E; } 
-   
-   /// Sets the location of '('. 
-   void setLParenLoc(SourceLocation Loc) { LParenLoc = Loc; } 
-   
-   /// Sets the location of the interop variable. 
-   void setVarLoc(SourceLocation Loc) { VarLoc = Loc; } 
-   
- public: 
-   /// Build 'use' clause with and interop variable expression \a InteropVar. 
-   /// 
-   /// \param InteropVar The interop variable. 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param LParenLoc Location of '('. 
-   /// \param VarLoc Location of the interop variable. 
-   /// \param EndLoc Ending location of the clause. 
-   OMPUseClause(Expr *InteropVar, SourceLocation StartLoc, 
-                SourceLocation LParenLoc, SourceLocation VarLoc, 
-                SourceLocation EndLoc) 
-       : OMPClause(llvm::omp::OMPC_use, StartLoc, EndLoc), LParenLoc(LParenLoc), 
-         VarLoc(VarLoc), InteropVar(InteropVar) {} 
-   
-   /// Build an empty clause. 
-   OMPUseClause() 
-       : OMPClause(llvm::omp::OMPC_use, SourceLocation(), SourceLocation()) {} 
-   
-   /// Returns the location of '('. 
-   SourceLocation getLParenLoc() const { return LParenLoc; } 
-   
-   /// Returns the location of the interop variable. 
-   SourceLocation getVarLoc() const { return VarLoc; } 
-   
-   /// Returns the interop variable. 
-   Expr *getInteropVar() const { return cast<Expr>(InteropVar); } 
-   
-   child_range children() { return child_range(&InteropVar, &InteropVar + 1); } 
-   
-   const_child_range children() const { 
-     return const_child_range(&InteropVar, &InteropVar + 1); 
-   } 
-   
-   child_range used_children() { 
-     return child_range(child_iterator(), child_iterator()); 
-   } 
-   const_child_range used_children() const { 
-     return const_child_range(const_child_iterator(), const_child_iterator()); 
-   } 
-   
-   static bool classof(const OMPClause *T) { 
-     return T->getClauseKind() == llvm::omp::OMPC_use; 
-   } 
- }; 
-   
- /// This represents 'destroy' clause in the '#pragma omp depobj' 
- /// directive or the '#pragma omp interop' directive.. 
- /// 
- /// \code 
- /// #pragma omp depobj(a) destroy 
- /// #pragma omp interop destroy(obj) 
- /// \endcode 
- /// In these examples directive '#pragma omp depobj' and '#pragma omp interop' 
- /// have a 'destroy' clause. The 'interop' directive includes an object. 
- class OMPDestroyClause final : public OMPClause { 
-   friend class OMPClauseReader; 
-   
-   /// Location of '('. 
-   SourceLocation LParenLoc; 
-   
-   /// Location of interop variable. 
-   SourceLocation VarLoc; 
-   
-   /// The interop variable. 
-   Stmt *InteropVar = nullptr; 
-   
-   /// Set the interop variable. 
-   void setInteropVar(Expr *E) { InteropVar = E; } 
-   
-   /// Sets the location of '('. 
-   void setLParenLoc(SourceLocation Loc) { LParenLoc = Loc; } 
-   
-   /// Sets the location of the interop variable. 
-   void setVarLoc(SourceLocation Loc) { VarLoc = Loc; } 
-   
- public: 
-   /// Build 'destroy' clause with an interop variable expression \a InteropVar. 
-   /// 
-   /// \param InteropVar The interop variable. 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param LParenLoc Location of '('. 
-   /// \param VarLoc Location of the interop variable. 
-   /// \param EndLoc Ending location of the clause. 
-   OMPDestroyClause(Expr *InteropVar, SourceLocation StartLoc, 
-                    SourceLocation LParenLoc, SourceLocation VarLoc, 
-                    SourceLocation EndLoc) 
-       : OMPClause(llvm::omp::OMPC_destroy, StartLoc, EndLoc), 
-         LParenLoc(LParenLoc), VarLoc(VarLoc), InteropVar(InteropVar) {} 
-   
-   /// Build 'destroy' clause. 
-   /// 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param EndLoc Ending location of the clause. 
-   OMPDestroyClause(SourceLocation StartLoc, SourceLocation EndLoc) 
-       : OMPClause(llvm::omp::OMPC_destroy, StartLoc, EndLoc) {} 
-   
-   /// Build an empty clause. 
-   OMPDestroyClause() 
-       : OMPClause(llvm::omp::OMPC_destroy, SourceLocation(), SourceLocation()) { 
-   } 
-   
-   /// Returns the location of '('. 
-   SourceLocation getLParenLoc() const { return LParenLoc; } 
-   
-   /// Returns the location of the interop variable. 
-   SourceLocation getVarLoc() const { return VarLoc; } 
-   
-   /// Returns the interop variable. 
-   Expr *getInteropVar() const { return cast_or_null<Expr>(InteropVar); } 
-   
-   child_range children() { 
-     if (InteropVar) 
-       return child_range(&InteropVar, &InteropVar + 1); 
-     return child_range(child_iterator(), child_iterator()); 
-   } 
-   
-   const_child_range children() const { 
-     if (InteropVar) 
-       return const_child_range(&InteropVar, &InteropVar + 1); 
-     return const_child_range(const_child_iterator(), const_child_iterator()); 
-   } 
-   
-   child_range used_children() { 
-     return child_range(child_iterator(), child_iterator()); 
-   } 
-   const_child_range used_children() const { 
-     return const_child_range(const_child_iterator(), const_child_iterator()); 
-   } 
-   
-   static bool classof(const OMPClause *T) { 
-     return T->getClauseKind() == llvm::omp::OMPC_destroy; 
-   } 
- }; 
-   
- /// This represents 'novariants' clause in the '#pragma omp ...' directive. 
- /// 
- /// \code 
- /// #pragma omp dispatch novariants(a > 5) 
- /// \endcode 
- /// In this example directive '#pragma omp dispatch' has simple 'novariants' 
- /// clause with condition 'a > 5'. 
- class OMPNovariantsClause final 
-     : public OMPOneStmtClause<llvm::omp::OMPC_novariants, OMPClause>, 
-       public OMPClauseWithPreInit { 
-   friend class OMPClauseReader; 
-   
-   /// Set condition. 
-   void setCondition(Expr *Cond) { setStmt(Cond); } 
-   
- public: 
-   /// Build 'novariants' clause with condition \a Cond. 
-   /// 
-   /// \param Cond Condition of the clause. 
-   /// \param HelperCond Helper condition for the construct. 
-   /// \param CaptureRegion Innermost OpenMP region where expressions in this 
-   /// clause must be captured. 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param LParenLoc Location of '('. 
-   /// \param EndLoc Ending location of the clause. 
-   OMPNovariantsClause(Expr *Cond, Stmt *HelperCond, 
-                       OpenMPDirectiveKind CaptureRegion, 
-                       SourceLocation StartLoc, SourceLocation LParenLoc, 
-                       SourceLocation EndLoc) 
-       : OMPOneStmtClause(Cond, StartLoc, LParenLoc, EndLoc), 
-         OMPClauseWithPreInit(this) { 
-     setPreInitStmt(HelperCond, CaptureRegion); 
-   } 
-   
-   /// Build an empty clause. 
-   OMPNovariantsClause() : OMPOneStmtClause(), OMPClauseWithPreInit(this) {} 
-   
-   /// Returns condition. 
-   Expr *getCondition() const { return getStmtAs<Expr>(); } 
-   
-   child_range used_children(); 
-   const_child_range used_children() const { 
-     auto Children = const_cast<OMPNovariantsClause *>(this)->used_children(); 
-     return const_child_range(Children.begin(), Children.end()); 
-   } 
- }; 
-   
- /// This represents 'nocontext' clause in the '#pragma omp ...' directive. 
- /// 
- /// \code 
- /// #pragma omp dispatch nocontext(a > 5) 
- /// \endcode 
- /// In this example directive '#pragma omp dispatch' has simple 'nocontext' 
- /// clause with condition 'a > 5'. 
- class OMPNocontextClause final 
-     : public OMPOneStmtClause<llvm::omp::OMPC_nocontext, OMPClause>, 
-       public OMPClauseWithPreInit { 
-   friend class OMPClauseReader; 
-   
-   /// Set condition. 
-   void setCondition(Expr *Cond) { setStmt(Cond); } 
-   
- public: 
-   /// Build 'nocontext' clause with condition \a Cond. 
-   /// 
-   /// \param Cond Condition of the clause. 
-   /// \param HelperCond Helper condition for the construct. 
-   /// \param CaptureRegion Innermost OpenMP region where expressions in this 
-   /// clause must be captured. 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param LParenLoc Location of '('. 
-   /// \param EndLoc Ending location of the clause. 
-   OMPNocontextClause(Expr *Cond, Stmt *HelperCond, 
-                      OpenMPDirectiveKind CaptureRegion, SourceLocation StartLoc, 
-                      SourceLocation LParenLoc, SourceLocation EndLoc) 
-       : OMPOneStmtClause(Cond, StartLoc, LParenLoc, EndLoc), 
-         OMPClauseWithPreInit(this) { 
-     setPreInitStmt(HelperCond, CaptureRegion); 
-   } 
-   
-   /// Build an empty clause. 
-   OMPNocontextClause() : OMPOneStmtClause(), OMPClauseWithPreInit(this) {} 
-   
-   /// Returns condition. 
-   Expr *getCondition() const { return getStmtAs<Expr>(); } 
-   
-   child_range used_children(); 
-   const_child_range used_children() const { 
-     auto Children = const_cast<OMPNocontextClause *>(this)->used_children(); 
-     return const_child_range(Children.begin(), Children.end()); 
-   } 
- }; 
-   
- /// This represents 'detach' clause in the '#pragma omp task' directive. 
- /// 
- /// \code 
- /// #pragma omp task detach(evt) 
- /// \endcode 
- /// In this example directive '#pragma omp detach' has simple 'detach' clause 
- /// with the variable 'evt'. 
- class OMPDetachClause final 
-     : public OMPOneStmtClause<llvm::omp::OMPC_detach, OMPClause> { 
-   friend class OMPClauseReader; 
-   
-   /// Set condition. 
-   void setEventHandler(Expr *E) { setStmt(E); } 
-   
- public: 
-   /// Build 'detach' clause with event-handler \a Evt. 
-   /// 
-   /// \param Evt Event handler expression. 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param LParenLoc Location of '('. 
-   /// \param EndLoc Ending location of the clause. 
-   OMPDetachClause(Expr *Evt, SourceLocation StartLoc, SourceLocation LParenLoc, 
-                   SourceLocation EndLoc) 
-       : OMPOneStmtClause(Evt, StartLoc, LParenLoc, EndLoc) {} 
-   
-   /// Build an empty clause. 
-   OMPDetachClause() : OMPOneStmtClause() {} 
-   
-   /// Returns event-handler expression. 
-   Expr *getEventHandler() const { return getStmtAs<Expr>(); } 
- }; 
-   
- /// This represents clause 'inclusive' in the '#pragma omp scan' directive. 
- /// 
- /// \code 
- /// #pragma omp scan inclusive(a,b) 
- /// \endcode 
- /// In this example directive '#pragma omp scan' has clause 'inclusive' 
- /// with the variables 'a' and 'b'. 
- class OMPInclusiveClause final 
-     : public OMPVarListClause<OMPInclusiveClause>, 
-       private llvm::TrailingObjects<OMPInclusiveClause, Expr *> { 
-   friend class OMPClauseReader; 
-   friend OMPVarListClause; 
-   friend TrailingObjects; 
-   
-   /// Build clause with number of variables \a N. 
-   /// 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param LParenLoc Location of '('. 
-   /// \param EndLoc Ending location of the clause. 
-   /// \param N Number of the variables in the clause. 
-   OMPInclusiveClause(SourceLocation StartLoc, SourceLocation LParenLoc, 
-                      SourceLocation EndLoc, unsigned N) 
-       : OMPVarListClause<OMPInclusiveClause>(llvm::omp::OMPC_inclusive, 
-                                              StartLoc, LParenLoc, EndLoc, N) {} 
-   
-   /// Build an empty clause. 
-   /// 
-   /// \param N Number of variables. 
-   explicit OMPInclusiveClause(unsigned N) 
-       : OMPVarListClause<OMPInclusiveClause>(llvm::omp::OMPC_inclusive, 
-                                              SourceLocation(), SourceLocation(), 
-                                              SourceLocation(), N) {} 
-   
- public: 
-   /// Creates clause with a list of variables \a VL. 
-   /// 
-   /// \param C AST context. 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param LParenLoc Location of '('. 
-   /// \param EndLoc Ending location of the clause. 
-   /// \param VL List of references to the original variables. 
-   static OMPInclusiveClause *Create(const ASTContext &C, 
-                                     SourceLocation StartLoc, 
-                                     SourceLocation LParenLoc, 
-                                     SourceLocation EndLoc, ArrayRef<Expr *> VL); 
-   
-   /// Creates an empty clause with the place for \a N variables. 
-   /// 
-   /// \param C AST context. 
-   /// \param N The number of variables. 
-   static OMPInclusiveClause *CreateEmpty(const ASTContext &C, unsigned N); 
-   
-   child_range children() { 
-     return child_range(reinterpret_cast<Stmt **>(varlist_begin()), 
-                        reinterpret_cast<Stmt **>(varlist_end())); 
-   } 
-   
-   const_child_range children() const { 
-     auto Children = const_cast<OMPInclusiveClause *>(this)->children(); 
-     return const_child_range(Children.begin(), Children.end()); 
-   } 
-   
-   child_range used_children() { 
-     return child_range(child_iterator(), child_iterator()); 
-   } 
-   const_child_range used_children() const { 
-     return const_child_range(const_child_iterator(), const_child_iterator()); 
-   } 
-   
-   static bool classof(const OMPClause *T) { 
-     return T->getClauseKind() == llvm::omp::OMPC_inclusive; 
-   } 
- }; 
-   
- /// This represents clause 'exclusive' in the '#pragma omp scan' directive. 
- /// 
- /// \code 
- /// #pragma omp scan exclusive(a,b) 
- /// \endcode 
- /// In this example directive '#pragma omp scan' has clause 'exclusive' 
- /// with the variables 'a' and 'b'. 
- class OMPExclusiveClause final 
-     : public OMPVarListClause<OMPExclusiveClause>, 
-       private llvm::TrailingObjects<OMPExclusiveClause, Expr *> { 
-   friend class OMPClauseReader; 
-   friend OMPVarListClause; 
-   friend TrailingObjects; 
-   
-   /// Build clause with number of variables \a N. 
-   /// 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param LParenLoc Location of '('. 
-   /// \param EndLoc Ending location of the clause. 
-   /// \param N Number of the variables in the clause. 
-   OMPExclusiveClause(SourceLocation StartLoc, SourceLocation LParenLoc, 
-                      SourceLocation EndLoc, unsigned N) 
-       : OMPVarListClause<OMPExclusiveClause>(llvm::omp::OMPC_exclusive, 
-                                              StartLoc, LParenLoc, EndLoc, N) {} 
-   
-   /// Build an empty clause. 
-   /// 
-   /// \param N Number of variables. 
-   explicit OMPExclusiveClause(unsigned N) 
-       : OMPVarListClause<OMPExclusiveClause>(llvm::omp::OMPC_exclusive, 
-                                              SourceLocation(), SourceLocation(), 
-                                              SourceLocation(), N) {} 
-   
- public: 
-   /// Creates clause with a list of variables \a VL. 
-   /// 
-   /// \param C AST context. 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param LParenLoc Location of '('. 
-   /// \param EndLoc Ending location of the clause. 
-   /// \param VL List of references to the original variables. 
-   static OMPExclusiveClause *Create(const ASTContext &C, 
-                                     SourceLocation StartLoc, 
-                                     SourceLocation LParenLoc, 
-                                     SourceLocation EndLoc, ArrayRef<Expr *> VL); 
-   
-   /// Creates an empty clause with the place for \a N variables. 
-   /// 
-   /// \param C AST context. 
-   /// \param N The number of variables. 
-   static OMPExclusiveClause *CreateEmpty(const ASTContext &C, unsigned N); 
-   
-   child_range children() { 
-     return child_range(reinterpret_cast<Stmt **>(varlist_begin()), 
-                        reinterpret_cast<Stmt **>(varlist_end())); 
-   } 
-   
-   const_child_range children() const { 
-     auto Children = const_cast<OMPExclusiveClause *>(this)->children(); 
-     return const_child_range(Children.begin(), Children.end()); 
-   } 
-   
-   child_range used_children() { 
-     return child_range(child_iterator(), child_iterator()); 
-   } 
-   const_child_range used_children() const { 
-     return const_child_range(const_child_iterator(), const_child_iterator()); 
-   } 
-   
-   static bool classof(const OMPClause *T) { 
-     return T->getClauseKind() == llvm::omp::OMPC_exclusive; 
-   } 
- }; 
-   
- /// This represents clause 'uses_allocators' in the '#pragma omp target'-based 
- /// directives. 
- /// 
- /// \code 
- /// #pragma omp target uses_allocators(default_allocator, my_allocator(traits)) 
- /// \endcode 
- /// In this example directive '#pragma omp target' has clause 'uses_allocators' 
- /// with the allocators 'default_allocator' and user-defined 'my_allocator'. 
- class OMPUsesAllocatorsClause final 
-     : public OMPClause, 
-       private llvm::TrailingObjects<OMPUsesAllocatorsClause, Expr *, 
-                                     SourceLocation> { 
- public: 
-   /// Data for list of allocators. 
-   struct Data { 
-     /// Allocator. 
-     Expr *Allocator = nullptr; 
-     /// Allocator traits. 
-     Expr *AllocatorTraits = nullptr; 
-     /// Locations of '(' and ')' symbols. 
-     SourceLocation LParenLoc, RParenLoc; 
-   }; 
-   
- private: 
-   friend class OMPClauseReader; 
-   friend TrailingObjects; 
-   
-   enum class ExprOffsets { 
-     Allocator, 
-     AllocatorTraits, 
-     Total, 
-   }; 
-   
-   enum class ParenLocsOffsets { 
-     LParen, 
-     RParen, 
-     Total, 
-   }; 
-   
-   /// Location of '('. 
-   SourceLocation LParenLoc; 
-   /// Total number of allocators in the clause. 
-   unsigned NumOfAllocators = 0; 
-   
-   /// Build clause. 
-   /// 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param LParenLoc Location of '('. 
-   /// \param EndLoc Ending location of the clause. 
-   /// \param N Number of allocators associated with the clause. 
-   OMPUsesAllocatorsClause(SourceLocation StartLoc, SourceLocation LParenLoc, 
-                           SourceLocation EndLoc, unsigned N) 
-       : OMPClause(llvm::omp::OMPC_uses_allocators, StartLoc, EndLoc), 
-         LParenLoc(LParenLoc), NumOfAllocators(N) {} 
-   
-   /// Build an empty clause. 
-   /// \param N Number of allocators associated with the clause. 
-   /// 
-   explicit OMPUsesAllocatorsClause(unsigned N) 
-       : OMPClause(llvm::omp::OMPC_uses_allocators, SourceLocation(), 
-                   SourceLocation()), 
-         NumOfAllocators(N) {} 
-   
-   unsigned numTrailingObjects(OverloadToken<Expr *>) const { 
-     return NumOfAllocators * static_cast<int>(ExprOffsets::Total); 
-   } 
-   
-   /// Sets the location of '('. 
-   void setLParenLoc(SourceLocation Loc) { LParenLoc = Loc; } 
-   
-   /// Sets the allocators data for the clause. 
-   void setAllocatorsData(ArrayRef<OMPUsesAllocatorsClause::Data> Data); 
-   
- public: 
-   /// Creates clause with a list of allocators \p Data. 
-   /// 
-   /// \param C AST context. 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param LParenLoc Location of '('. 
-   /// \param EndLoc Ending location of the clause. 
-   /// \param Data List of allocators. 
-   static OMPUsesAllocatorsClause * 
-   Create(const ASTContext &C, SourceLocation StartLoc, SourceLocation LParenLoc, 
-          SourceLocation EndLoc, ArrayRef<OMPUsesAllocatorsClause::Data> Data); 
-   
-   /// Creates an empty clause with the place for \p N allocators. 
-   /// 
-   /// \param C AST context. 
-   /// \param N The number of allocators. 
-   static OMPUsesAllocatorsClause *CreateEmpty(const ASTContext &C, unsigned N); 
-   
-   /// Returns the location of '('. 
-   SourceLocation getLParenLoc() const { return LParenLoc; } 
-   
-   /// Returns number of allocators associated with the clause. 
-   unsigned getNumberOfAllocators() const { return NumOfAllocators; } 
-   
-   /// Returns data for the specified allocator. 
-   OMPUsesAllocatorsClause::Data getAllocatorData(unsigned I) const; 
-   
-   // Iterators 
-   child_range children() { 
-     Stmt **Begin = reinterpret_cast<Stmt **>(getTrailingObjects<Expr *>()); 
-     return child_range(Begin, Begin + NumOfAllocators * 
-                                           static_cast<int>(ExprOffsets::Total)); 
-   } 
-   const_child_range children() const { 
-     Stmt *const *Begin = 
-         reinterpret_cast<Stmt *const *>(getTrailingObjects<Expr *>()); 
-     return const_child_range( 
-         Begin, Begin + NumOfAllocators * static_cast<int>(ExprOffsets::Total)); 
-   } 
-   
-   child_range used_children() { 
-     return child_range(child_iterator(), child_iterator()); 
-   } 
-   const_child_range used_children() const { 
-     return const_child_range(const_child_iterator(), const_child_iterator()); 
-   } 
-   
-   static bool classof(const OMPClause *T) { 
-     return T->getClauseKind() == llvm::omp::OMPC_uses_allocators; 
-   } 
- }; 
-   
- /// This represents clause 'affinity' in the '#pragma omp task'-based 
- /// directives. 
- /// 
- /// \code 
- /// #pragma omp task affinity(iterator(i = 0:n) : ([3][n])a, b[:n], c[i]) 
- /// \endcode 
- /// In this example directive '#pragma omp task' has clause 'affinity' with the 
- /// affinity modifer 'iterator(i = 0:n)' and locator items '([3][n])a', 'b[:n]' 
- /// and 'c[i]'. 
- class OMPAffinityClause final 
-     : public OMPVarListClause<OMPAffinityClause>, 
-       private llvm::TrailingObjects<OMPAffinityClause, Expr *> { 
-   friend class OMPClauseReader; 
-   friend OMPVarListClause; 
-   friend TrailingObjects; 
-   
-   /// Location of ':' symbol. 
-   SourceLocation ColonLoc; 
-   
-   /// Build clause. 
-   /// 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param LParenLoc Location of '('. 
-   /// \param ColonLoc Location of ':'. 
-   /// \param EndLoc Ending location of the clause. 
-   /// \param N Number of locators associated with the clause. 
-   OMPAffinityClause(SourceLocation StartLoc, SourceLocation LParenLoc, 
-                     SourceLocation ColonLoc, SourceLocation EndLoc, unsigned N) 
-       : OMPVarListClause<OMPAffinityClause>(llvm::omp::OMPC_affinity, StartLoc, 
-                                             LParenLoc, EndLoc, N) {} 
-   
-   /// Build an empty clause. 
-   /// \param N Number of locators associated with the clause. 
-   /// 
-   explicit OMPAffinityClause(unsigned N) 
-       : OMPVarListClause<OMPAffinityClause>(llvm::omp::OMPC_affinity, 
-                                             SourceLocation(), SourceLocation(), 
-                                             SourceLocation(), N) {} 
-   
-   /// Sets the affinity modifier for the clause, if any. 
-   void setModifier(Expr *E) { 
-     getTrailingObjects<Expr *>()[varlist_size()] = E; 
-   } 
-   
-   /// Sets the location of ':' symbol. 
-   void setColonLoc(SourceLocation Loc) { ColonLoc = Loc; } 
-   
- public: 
-   /// Creates clause with a modifier a list of locator items. 
-   /// 
-   /// \param C AST context. 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param LParenLoc Location of '('. 
-   /// \param ColonLoc Location of ':'. 
-   /// \param EndLoc Ending location of the clause. 
-   /// \param Locators List of locator items. 
-   static OMPAffinityClause *Create(const ASTContext &C, SourceLocation StartLoc, 
-                                    SourceLocation LParenLoc, 
-                                    SourceLocation ColonLoc, 
-                                    SourceLocation EndLoc, Expr *Modifier, 
-                                    ArrayRef<Expr *> Locators); 
-   
-   /// Creates an empty clause with the place for \p N locator items. 
-   /// 
-   /// \param C AST context. 
-   /// \param N The number of locator items. 
-   static OMPAffinityClause *CreateEmpty(const ASTContext &C, unsigned N); 
-   
-   /// Gets affinity modifier. 
-   Expr *getModifier() { return getTrailingObjects<Expr *>()[varlist_size()]; } 
-   Expr *getModifier() const { 
-     return getTrailingObjects<Expr *>()[varlist_size()]; 
-   } 
-   
-   /// Gets the location of ':' symbol. 
-   SourceLocation getColonLoc() const { return ColonLoc; } 
-   
-   // Iterators 
-   child_range children() { 
-     int Offset = getModifier() ? 1 : 0; 
-     return child_range(reinterpret_cast<Stmt **>(varlist_begin()), 
-                        reinterpret_cast<Stmt **>(varlist_end() + Offset)); 
-   } 
-   
-   const_child_range children() const { 
-     auto Children = const_cast<OMPAffinityClause *>(this)->children(); 
-     return const_child_range(Children.begin(), Children.end()); 
-   } 
-   
-   child_range used_children() { 
-     return child_range(child_iterator(), child_iterator()); 
-   } 
-   const_child_range used_children() const { 
-     return const_child_range(const_child_iterator(), const_child_iterator()); 
-   } 
-   
-   static bool classof(const OMPClause *T) { 
-     return T->getClauseKind() == llvm::omp::OMPC_affinity; 
-   } 
- }; 
-   
- /// This represents 'filter' clause in the '#pragma omp ...' directive. 
- /// 
- /// \code 
- /// #pragma omp masked filter(tid) 
- /// \endcode 
- /// In this example directive '#pragma omp masked' has 'filter' clause with 
- /// thread id. 
- class OMPFilterClause final 
-     : public OMPOneStmtClause<llvm::omp::OMPC_filter, OMPClause>, 
-       public OMPClauseWithPreInit { 
-   friend class OMPClauseReader; 
-   
-   /// Sets the thread identifier. 
-   void setThreadID(Expr *TID) { setStmt(TID); } 
-   
- public: 
-   /// Build 'filter' clause with thread-id \a ThreadID. 
-   /// 
-   /// \param ThreadID Thread identifier. 
-   /// \param HelperE Helper expression associated with this clause. 
-   /// \param CaptureRegion Innermost OpenMP region where expressions in this 
-   /// clause must be captured. 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param LParenLoc Location of '('. 
-   /// \param EndLoc Ending location of the clause. 
-   OMPFilterClause(Expr *ThreadID, Stmt *HelperE, 
-                   OpenMPDirectiveKind CaptureRegion, SourceLocation StartLoc, 
-                   SourceLocation LParenLoc, SourceLocation EndLoc) 
-       : OMPOneStmtClause(ThreadID, StartLoc, LParenLoc, EndLoc), 
-         OMPClauseWithPreInit(this) { 
-     setPreInitStmt(HelperE, CaptureRegion); 
-   } 
-   
-   /// Build an empty clause. 
-   OMPFilterClause() : OMPOneStmtClause(), OMPClauseWithPreInit(this) {} 
-   
-   /// Return thread identifier. 
-   Expr *getThreadID() const { return getStmtAs<Expr>(); } 
-   
-   /// Return thread identifier. 
-   Expr *getThreadID() { return getStmtAs<Expr>(); } 
- }; 
-   
- /// This represents 'bind' clause in the '#pragma omp ...' directives. 
- /// 
- /// \code 
- /// #pragma omp loop bind(parallel) 
- /// \endcode 
- class OMPBindClause final : public OMPNoChildClause<llvm::omp::OMPC_bind> { 
-   friend class OMPClauseReader; 
-   
-   /// Location of '('. 
-   SourceLocation LParenLoc; 
-   
-   /// The binding kind of 'bind' clause. 
-   OpenMPBindClauseKind Kind = OMPC_BIND_unknown; 
-   
-   /// Start location of the kind in source code. 
-   SourceLocation KindLoc; 
-   
-   /// Sets the location of '('. 
-   void setLParenLoc(SourceLocation Loc) { LParenLoc = Loc; } 
-   
-   /// Set the binding kind. 
-   void setBindKind(OpenMPBindClauseKind K) { Kind = K; } 
-   
-   /// Set the binding kind location. 
-   void setBindKindLoc(SourceLocation KLoc) { KindLoc = KLoc; } 
-   
-   /// Build 'bind' clause with kind \a K ('teams', 'parallel', or 'thread'). 
-   /// 
-   /// \param K Binding kind of the clause ('teams', 'parallel' or 'thread'). 
-   /// \param KLoc Starting location of the binding kind. 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param LParenLoc Location of '('. 
-   /// \param EndLoc Ending location of the clause. 
-   OMPBindClause(OpenMPBindClauseKind K, SourceLocation KLoc, 
-                 SourceLocation StartLoc, SourceLocation LParenLoc, 
-                 SourceLocation EndLoc) 
-       : OMPNoChildClause(StartLoc, EndLoc), LParenLoc(LParenLoc), Kind(K), 
-         KindLoc(KLoc) {} 
-   
-   /// Build an empty clause. 
-   OMPBindClause() : OMPNoChildClause() {} 
-   
- public: 
-   /// Build 'bind' clause with kind \a K ('teams', 'parallel', or 'thread'). 
-   /// 
-   /// \param C AST context 
-   /// \param K Binding kind of the clause ('teams', 'parallel' or 'thread'). 
-   /// \param KLoc Starting location of the binding kind. 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param LParenLoc Location of '('. 
-   /// \param EndLoc Ending location of the clause. 
-   static OMPBindClause *Create(const ASTContext &C, OpenMPBindClauseKind K, 
-                                SourceLocation KLoc, SourceLocation StartLoc, 
-                                SourceLocation LParenLoc, SourceLocation EndLoc); 
-   
-   /// Build an empty 'bind' clause. 
-   /// 
-   /// \param C AST context 
-   static OMPBindClause *CreateEmpty(const ASTContext &C); 
-   
-   /// Returns the location of '('. 
-   SourceLocation getLParenLoc() const { return LParenLoc; } 
-   
-   /// Returns kind of the clause. 
-   OpenMPBindClauseKind getBindKind() const { return Kind; } 
-   
-   /// Returns location of clause kind. 
-   SourceLocation getBindKindLoc() const { return KindLoc; } 
- }; 
-   
- /// This class implements a simple visitor for OMPClause 
- /// subclasses. 
- template<class ImplClass, template <typename> class Ptr, typename RetTy> 
- class OMPClauseVisitorBase { 
- public: 
- #define PTR(CLASS) Ptr<CLASS> 
- #define DISPATCH(CLASS) \ 
-   return static_cast<ImplClass*>(this)->Visit##CLASS(static_cast<PTR(CLASS)>(S)) 
-   
- #define GEN_CLANG_CLAUSE_CLASS 
- #define CLAUSE_CLASS(Enum, Str, Class)                                         \ 
-   RetTy Visit##Class(PTR(Class) S) { DISPATCH(Class); } 
- #include "llvm/Frontend/OpenMP/OMP.inc" 
-   
-   RetTy Visit(PTR(OMPClause) S) { 
-     // Top switch clause: visit each OMPClause. 
-     switch (S->getClauseKind()) { 
- #define GEN_CLANG_CLAUSE_CLASS 
- #define CLAUSE_CLASS(Enum, Str, Class)                                         \ 
-   case llvm::omp::Clause::Enum:                                                \ 
-     return Visit##Class(static_cast<PTR(Class)>(S)); 
- #define CLAUSE_NO_CLASS(Enum, Str)                                             \ 
-   case llvm::omp::Clause::Enum:                                                \ 
-     break; 
- #include "llvm/Frontend/OpenMP/OMP.inc" 
-     } 
-   } 
-   // Base case, ignore it. :) 
-   RetTy VisitOMPClause(PTR(OMPClause) Node) { return RetTy(); } 
- #undef PTR 
- #undef DISPATCH 
- }; 
-   
- template <typename T> using const_ptr = std::add_pointer_t<std::add_const_t<T>>; 
-   
- template <class ImplClass, typename RetTy = void> 
- class OMPClauseVisitor 
-     : public OMPClauseVisitorBase<ImplClass, std::add_pointer_t, RetTy> {}; 
- template<class ImplClass, typename RetTy = void> 
- class ConstOMPClauseVisitor : 
-       public OMPClauseVisitorBase <ImplClass, const_ptr, RetTy> {}; 
-   
- class OMPClausePrinter final : public OMPClauseVisitor<OMPClausePrinter> { 
-   raw_ostream &OS; 
-   const PrintingPolicy &Policy; 
-   
-   /// Process clauses with list of variables. 
-   template <typename T> void VisitOMPClauseList(T *Node, char StartSym); 
-   /// Process motion clauses. 
-   template <typename T> void VisitOMPMotionClause(T *Node); 
-   
- public: 
-   OMPClausePrinter(raw_ostream &OS, const PrintingPolicy &Policy) 
-       : OS(OS), Policy(Policy) {} 
-   
- #define GEN_CLANG_CLAUSE_CLASS 
- #define CLAUSE_CLASS(Enum, Str, Class) void Visit##Class(Class *S); 
- #include "llvm/Frontend/OpenMP/OMP.inc" 
- }; 
-   
- struct OMPTraitProperty { 
-   llvm::omp::TraitProperty Kind = llvm::omp::TraitProperty::invalid; 
-   
-   /// The raw string as we parsed it. This is needed for the `isa` trait set 
-   /// (which accepts anything) and (later) extensions. 
-   StringRef RawString; 
- }; 
- struct OMPTraitSelector { 
-   Expr *ScoreOrCondition = nullptr; 
-   llvm::omp::TraitSelector Kind = llvm::omp::TraitSelector::invalid; 
-   llvm::SmallVector<OMPTraitProperty, 1> Properties; 
- }; 
- struct OMPTraitSet { 
-   llvm::omp::TraitSet Kind = llvm::omp::TraitSet::invalid; 
-   llvm::SmallVector<OMPTraitSelector, 2> Selectors; 
- }; 
-   
- /// Helper data structure representing the traits in a match clause of an 
- /// `declare variant` or `metadirective`. The outer level is an ordered 
- /// collection of selector sets, each with an associated kind and an ordered 
- /// collection of selectors. A selector has a kind, an optional score/condition, 
- /// and an ordered collection of properties. 
- class OMPTraitInfo { 
-   /// Private constructor accesible only by ASTContext. 
-   OMPTraitInfo() {} 
-   friend class ASTContext; 
-   
- public: 
-   /// Reconstruct a (partial) OMPTraitInfo object from a mangled name. 
-   OMPTraitInfo(StringRef MangledName); 
-   
-   /// The outermost level of selector sets. 
-   llvm::SmallVector<OMPTraitSet, 2> Sets; 
-   
-   bool anyScoreOrCondition( 
-       llvm::function_ref<bool(Expr *&, bool /* IsScore */)> Cond) { 
-     return llvm::any_of(Sets, [&](OMPTraitSet &Set) { 
-       return llvm::any_of( 
-           Set.Selectors, [&](OMPTraitSelector &Selector) { 
-             return Cond(Selector.ScoreOrCondition, 
-                         /* IsScore */ Selector.Kind != 
-                             llvm::omp::TraitSelector::user_condition); 
-           }); 
-     }); 
-   } 
-   
-   /// Create a variant match info object from this trait info object. While the 
-   /// former is a flat representation the actual main difference is that the 
-   /// latter uses clang::Expr to store the score/condition while the former is 
-   /// independent of clang. Thus, expressions and conditions are evaluated in 
-   /// this method. 
-   void getAsVariantMatchInfo(ASTContext &ASTCtx, 
-                              llvm::omp::VariantMatchInfo &VMI) const; 
-   
-   /// Return a string representation identifying this context selector. 
-   std::string getMangledName() const; 
-   
-   /// Check the extension trait \p TP is active. 
-   bool isExtensionActive(llvm::omp::TraitProperty TP) { 
-     for (const OMPTraitSet &Set : Sets) { 
-       if (Set.Kind != llvm::omp::TraitSet::implementation) 
-         continue; 
-       for (const OMPTraitSelector &Selector : Set.Selectors) { 
-         if (Selector.Kind != llvm::omp::TraitSelector::implementation_extension) 
-           continue; 
-         for (const OMPTraitProperty &Property : Selector.Properties) { 
-           if (Property.Kind == TP) 
-             return true; 
-         } 
-       } 
-     } 
-     return false; 
-   } 
-   
-   /// Print a human readable representation into \p OS. 
-   void print(llvm::raw_ostream &OS, const PrintingPolicy &Policy) const; 
- }; 
- llvm::raw_ostream &operator<<(llvm::raw_ostream &OS, const OMPTraitInfo &TI); 
- llvm::raw_ostream &operator<<(llvm::raw_ostream &OS, const OMPTraitInfo *TI); 
-   
- /// Clang specific specialization of the OMPContext to lookup target features. 
- struct TargetOMPContext final : public llvm::omp::OMPContext { 
-   TargetOMPContext(ASTContext &ASTCtx, 
-                    std::function<void(StringRef)> &&DiagUnknownTrait, 
-                    const FunctionDecl *CurrentFunctionDecl, 
-                    ArrayRef<llvm::omp::TraitProperty> ConstructTraits); 
-   
-   virtual ~TargetOMPContext() = default; 
-   
-   /// See llvm::omp::OMPContext::matchesISATrait 
-   bool matchesISATrait(StringRef RawString) const override; 
-   
- private: 
-   std::function<bool(StringRef)> FeatureValidityCheck; 
-   std::function<void(StringRef)> DiagUnknownTrait; 
-   llvm::StringMap<bool> FeatureMap; 
- }; 
-   
- /// Contains data for OpenMP directives: clauses, children 
- /// expressions/statements (helpers for codegen) and associated statement, if 
- /// any. 
- class OMPChildren final 
-     : private llvm::TrailingObjects<OMPChildren, OMPClause *, Stmt *> { 
-   friend TrailingObjects; 
-   friend class OMPClauseReader; 
-   friend class OMPExecutableDirective; 
-   template <typename T> friend class OMPDeclarativeDirective; 
-   
-   /// Numbers of clauses. 
-   unsigned NumClauses = 0; 
-   /// Number of child expressions/stmts. 
-   unsigned NumChildren = 0; 
-   /// true if the directive has associated statement. 
-   bool HasAssociatedStmt = false; 
-   
-   /// Define the sizes of each trailing object array except the last one. This 
-   /// is required for TrailingObjects to work properly. 
-   size_t numTrailingObjects(OverloadToken<OMPClause *>) const { 
-     return NumClauses; 
-   } 
-   
-   OMPChildren() = delete; 
-   
-   OMPChildren(unsigned NumClauses, unsigned NumChildren, bool HasAssociatedStmt) 
-       : NumClauses(NumClauses), NumChildren(NumChildren), 
-         HasAssociatedStmt(HasAssociatedStmt) {} 
-   
-   static size_t size(unsigned NumClauses, bool HasAssociatedStmt, 
-                      unsigned NumChildren); 
-   
-   static OMPChildren *Create(void *Mem, ArrayRef<OMPClause *> Clauses); 
-   static OMPChildren *Create(void *Mem, ArrayRef<OMPClause *> Clauses, Stmt *S, 
-                              unsigned NumChildren = 0); 
-   static OMPChildren *CreateEmpty(void *Mem, unsigned NumClauses, 
-                                   bool HasAssociatedStmt = false, 
-                                   unsigned NumChildren = 0); 
-   
- public: 
-   unsigned getNumClauses() const { return NumClauses; } 
-   unsigned getNumChildren() const { return NumChildren; } 
-   bool hasAssociatedStmt() const { return HasAssociatedStmt; } 
-   
-   /// Set associated statement. 
-   void setAssociatedStmt(Stmt *S) { 
-     getTrailingObjects<Stmt *>()[NumChildren] = S; 
-   } 
-   
-   void setChildren(ArrayRef<Stmt *> Children); 
-   
-   /// Sets the list of variables for this clause. 
-   /// 
-   /// \param Clauses The list of clauses for the directive. 
-   /// 
-   void setClauses(ArrayRef<OMPClause *> Clauses); 
-   
-   /// Returns statement associated with the directive. 
-   const Stmt *getAssociatedStmt() const { 
-     return const_cast<OMPChildren *>(this)->getAssociatedStmt(); 
-   } 
-   Stmt *getAssociatedStmt() { 
-     assert(HasAssociatedStmt && 
-            "Expected directive with the associated statement."); 
-     return getTrailingObjects<Stmt *>()[NumChildren]; 
-   } 
-   
-   /// Get the clauses storage. 
-   MutableArrayRef<OMPClause *> getClauses() { 
-     return llvm::MutableArrayRef(getTrailingObjects<OMPClause *>(), 
-                                      NumClauses); 
-   } 
-   ArrayRef<OMPClause *> getClauses() const { 
-     return const_cast<OMPChildren *>(this)->getClauses(); 
-   } 
-   
-   /// Returns the captured statement associated with the 
-   /// component region within the (combined) directive. 
-   /// 
-   /// \param RegionKind Component region kind. 
-   const CapturedStmt * 
-   getCapturedStmt(OpenMPDirectiveKind RegionKind, 
-                   ArrayRef<OpenMPDirectiveKind> CaptureRegions) const { 
-     assert(llvm::is_contained(CaptureRegions, RegionKind) && 
-            "RegionKind not found in OpenMP CaptureRegions."); 
-     auto *CS = cast<CapturedStmt>(getAssociatedStmt()); 
-     for (auto ThisCaptureRegion : CaptureRegions) { 
-       if (ThisCaptureRegion == RegionKind) 
-         return CS; 
-       CS = cast<CapturedStmt>(CS->getCapturedStmt()); 
-     } 
-     llvm_unreachable("Incorrect RegionKind specified for directive."); 
-   } 
-   
-   /// Get innermost captured statement for the construct. 
-   CapturedStmt * 
-   getInnermostCapturedStmt(ArrayRef<OpenMPDirectiveKind> CaptureRegions) { 
-     assert(hasAssociatedStmt() && "Must have associated captured statement."); 
-     assert(!CaptureRegions.empty() && 
-            "At least one captured statement must be provided."); 
-     auto *CS = cast<CapturedStmt>(getAssociatedStmt()); 
-     for (unsigned Level = CaptureRegions.size(); Level > 1; --Level) 
-       CS = cast<CapturedStmt>(CS->getCapturedStmt()); 
-     return CS; 
-   } 
-   
-   const CapturedStmt * 
-   getInnermostCapturedStmt(ArrayRef<OpenMPDirectiveKind> CaptureRegions) const { 
-     return const_cast<OMPChildren *>(this)->getInnermostCapturedStmt( 
-         CaptureRegions); 
-   } 
-   
-   MutableArrayRef<Stmt *> getChildren(); 
-   ArrayRef<Stmt *> getChildren() const { 
-     return const_cast<OMPChildren *>(this)->getChildren(); 
-   } 
-   
-   Stmt *getRawStmt() { 
-     assert(HasAssociatedStmt && 
-            "Expected directive with the associated statement."); 
-     if (auto *CS = dyn_cast<CapturedStmt>(getAssociatedStmt())) { 
-       Stmt *S = nullptr; 
-       do { 
-         S = CS->getCapturedStmt(); 
-         CS = dyn_cast<CapturedStmt>(S); 
-       } while (CS); 
-       return S; 
-     } 
-     return getAssociatedStmt(); 
-   } 
-   const Stmt *getRawStmt() const { 
-     return const_cast<OMPChildren *>(this)->getRawStmt(); 
-   } 
-   
-   Stmt::child_range getAssociatedStmtAsRange() { 
-     if (!HasAssociatedStmt) 
-       return Stmt::child_range(Stmt::child_iterator(), Stmt::child_iterator()); 
-     return Stmt::child_range(&getTrailingObjects<Stmt *>()[NumChildren], 
-                              &getTrailingObjects<Stmt *>()[NumChildren + 1]); 
-   } 
- }; 
-   
- /// This represents 'ompx_dyn_cgroup_mem' clause in the '#pragma omp target ...' 
- /// directive. 
- /// 
- /// \code 
- /// #pragma omp target [...] ompx_dyn_cgroup_mem(N) 
- /// \endcode 
- class OMPXDynCGroupMemClause 
-     : public OMPOneStmtClause<llvm::omp::OMPC_ompx_dyn_cgroup_mem, OMPClause>, 
-       public OMPClauseWithPreInit { 
-   friend class OMPClauseReader; 
-   
-   /// Set size. 
-   void setSize(Expr *E) { setStmt(E); } 
-   
- public: 
-   /// Build 'ompx_dyn_cgroup_mem' clause. 
-   /// 
-   /// \param Size Size expression. 
-   /// \param HelperSize Helper Size expression 
-   /// \param CaptureRegion Innermost OpenMP region where expressions in this 
-   /// \param StartLoc Starting location of the clause. 
-   /// \param LParenLoc Location of '('. 
-   /// \param EndLoc Ending location of the clause. 
-   OMPXDynCGroupMemClause(Expr *Size, Stmt *HelperSize, 
-                          OpenMPDirectiveKind CaptureRegion, 
-                          SourceLocation StartLoc, SourceLocation LParenLoc, 
-                          SourceLocation EndLoc) 
-       : OMPOneStmtClause(Size, StartLoc, LParenLoc, EndLoc), 
-         OMPClauseWithPreInit(this) { 
-     setPreInitStmt(HelperSize, CaptureRegion); 
-   } 
-   
-   /// Build an empty clause. 
-   OMPXDynCGroupMemClause() : OMPOneStmtClause(), OMPClauseWithPreInit(this) {} 
-   
-   /// Return the size expression. 
-   Expr *getSize() { return getStmtAs<Expr>(); } 
-   
-   /// Return the size expression. 
-   Expr *getSize() const { return getStmtAs<Expr>(); } 
- }; 
-   
- } // namespace clang 
-   
- #endif // LLVM_CLANG_AST_OPENMPCLAUSE_H 
-