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| Rev | Author | Line No. | Line |
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| 14 | pmbaty | 1 | //===- polly/PolyhedralInfo.h - PolyhedralInfo class definition -*- C++ -*-===// |
| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | /// |
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| 9 | /// This file contains the declaration of the PolyhedralInfo class, which will |
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| 10 | /// provide an interface to expose polyhedral analysis information of Polly. |
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| 11 | /// |
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| 12 | /// This is work in progress. We will add more API's as and when deemed |
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| 13 | /// required. |
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| 14 | //===----------------------------------------------------------------------===/// |
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| 15 | |||
| 16 | #ifndef POLLY_POLYHEDRAL_INFO_H |
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| 17 | #define POLLY_POLYHEDRAL_INFO_H |
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| 18 | |||
| 19 | #include "llvm/Pass.h" |
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| 20 | #include "isl/aff_type.h" |
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| 21 | #include "isl/ctx.h" |
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| 22 | #include "isl/union_map_type.h" |
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| 23 | |||
| 24 | namespace llvm { |
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| 25 | class Loop; |
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| 26 | } // namespace llvm |
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| 27 | |||
| 28 | namespace polly { |
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| 29 | |||
| 30 | class Scop; |
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| 31 | class ScopInfo; |
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| 32 | class DependenceInfoWrapperPass; |
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| 33 | |||
| 34 | class PolyhedralInfo final : public llvm::FunctionPass { |
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| 35 | public: |
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| 36 | static char ID; // Pass identification, replacement for typeid |
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| 37 | |||
| 38 | /// Construct a new PolyhedralInfo pass. |
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| 39 | PolyhedralInfo() : FunctionPass(ID) {} |
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| 40 | ~PolyhedralInfo() {} |
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| 41 | |||
| 42 | /// Check if a given loop is parallel. |
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| 43 | /// |
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| 44 | /// @param L The loop. |
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| 45 | /// |
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| 46 | /// @return Returns true, if loop is parallel false otherwise. |
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| 47 | bool isParallel(llvm::Loop *L) const; |
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| 48 | |||
| 49 | /// Return the SCoP containing the @p L loop. |
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| 50 | /// |
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| 51 | /// @param L The loop. |
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| 52 | /// |
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| 53 | /// @return Returns the SCoP containing the given loop. |
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| 54 | /// Returns null if the loop is not contained in any SCoP. |
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| 55 | const Scop *getScopContainingLoop(llvm::Loop *L) const; |
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| 56 | |||
| 57 | /// Computes the partial schedule for the given @p L loop. |
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| 58 | /// |
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| 59 | /// @param S The SCoP containing the given loop |
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| 60 | /// @param L The loop. |
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| 61 | /// |
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| 62 | /// @return Returns the partial schedule for the given loop |
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| 63 | __isl_give isl_union_map *getScheduleForLoop(const Scop *S, |
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| 64 | llvm::Loop *L) const; |
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| 65 | |||
| 66 | /// Get the SCoP and dependence analysis information for @p F. |
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| 67 | bool runOnFunction(llvm::Function &F) override; |
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| 68 | |||
| 69 | /// Release the internal memory. |
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| 70 | void releaseMemory() override {} |
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| 71 | |||
| 72 | /// Print to @p OS if each dimension of a loop nest is parallel or not. |
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| 73 | void print(llvm::raw_ostream &OS, |
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| 74 | const llvm::Module *M = nullptr) const override; |
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| 75 | |||
| 76 | /// Register all analyses and transformation required. |
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| 77 | void getAnalysisUsage(llvm::AnalysisUsage &AU) const override; |
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| 78 | |||
| 79 | private: |
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| 80 | /// Check if a given loop is parallel or vectorizable. |
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| 81 | /// |
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| 82 | /// @param L The loop. |
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| 83 | /// @param MinDepDistPtr If not nullptr, the minimal dependence distance will |
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| 84 | /// be returned at the address of that pointer |
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| 85 | /// |
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| 86 | /// @return Returns true if loop is parallel or vectorizable, false |
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| 87 | /// otherwise. |
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| 88 | bool checkParallel(llvm::Loop *L, |
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| 89 | __isl_give isl_pw_aff **MinDepDistPtr = nullptr) const; |
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| 90 | |||
| 91 | ScopInfo *SI; |
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| 92 | DependenceInfoWrapperPass *DI; |
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| 93 | }; |
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| 94 | |||
| 95 | llvm::Pass *createPolyhedralInfoPrinterLegacyPass(llvm::raw_ostream &OS); |
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| 96 | } // end namespace polly |
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| 97 | |||
| 98 | namespace llvm { |
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| 99 | class PassRegistry; |
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| 100 | void initializePolyhedralInfoPass(llvm::PassRegistry &); |
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| 101 | void initializePolyhedralInfoPrinterLegacyPassPass(llvm::PassRegistry &); |
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| 102 | } // namespace llvm |
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| 103 | |||
| 104 | #endif |