//===- 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