| 1 | //===------ DeLICM.h --------------------------------------------*- C++ -*-===// |
|---|
| 2 | // |
|---|
| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
|---|
| 4 | // See https://llvm.org/LICENSE.txt for license information. |
|---|
| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
|---|
| 6 | // |
|---|
| 7 | //===----------------------------------------------------------------------===// |
|---|
| 8 | // |
|---|
| 9 | // Undo the effect of Loop Invariant Code Motion (LICM) and |
|---|
| 10 | // GVN Partial Redundancy Elimination (PRE) on SCoP-level. |
|---|
| 11 | // |
|---|
| 12 | // Namely, remove register/scalar dependencies by mapping them back to array |
|---|
| 13 | // elements. |
|---|
| 14 | // |
|---|
| 15 | //===----------------------------------------------------------------------===// |
|---|
| 16 | |
|---|
| 17 | #ifndef POLLY_DELICM_H |
|---|
| 18 | #define POLLY_DELICM_H |
|---|
| 19 | |
|---|
| 20 | #include "polly/ScopPass.h" |
|---|
| 21 | #include "isl/isl-noexceptions.h" |
|---|
| 22 | |
|---|
| 23 | namespace llvm { |
|---|
| 24 | class PassRegistry; |
|---|
| 25 | class Pass; |
|---|
| 26 | class raw_ostream; |
|---|
| 27 | } // namespace llvm |
|---|
| 28 | |
|---|
| 29 | namespace polly { |
|---|
| 30 | /// Create a new DeLICM pass instance. |
|---|
| 31 | llvm::Pass *createDeLICMWrapperPass(); |
|---|
| 32 | llvm::Pass *createDeLICMPrinterLegacyPass(llvm::raw_ostream &OS); |
|---|
| 33 | |
|---|
| 34 | struct DeLICMPass final : llvm::PassInfoMixin<DeLICMPass> { |
|---|
| 35 | DeLICMPass() {} |
|---|
| 36 | |
|---|
| 37 | llvm::PreservedAnalyses run(Scop &S, ScopAnalysisManager &SAM, |
|---|
| 38 | ScopStandardAnalysisResults &SAR, SPMUpdater &U); |
|---|
| 39 | }; |
|---|
| 40 | |
|---|
| 41 | struct DeLICMPrinterPass final : llvm::PassInfoMixin<DeLICMPrinterPass> { |
|---|
| 42 | DeLICMPrinterPass(raw_ostream &OS) : OS(OS) {} |
|---|
| 43 | |
|---|
| 44 | PreservedAnalyses run(Scop &S, ScopAnalysisManager &, |
|---|
| 45 | ScopStandardAnalysisResults &SAR, SPMUpdater &); |
|---|
| 46 | |
|---|
| 47 | private: |
|---|
| 48 | llvm::raw_ostream &OS; |
|---|
| 49 | }; |
|---|
| 50 | |
|---|
| 51 | /// Determine whether two lifetimes are conflicting. |
|---|
| 52 | /// |
|---|
| 53 | /// Used by unittesting. |
|---|
| 54 | bool isConflicting(isl::union_set ExistingOccupied, |
|---|
| 55 | isl::union_set ExistingUnused, isl::union_map ExistingKnown, |
|---|
| 56 | isl::union_map ExistingWrites, |
|---|
| 57 | isl::union_set ProposedOccupied, |
|---|
| 58 | isl::union_set ProposedUnused, isl::union_map ProposedKnown, |
|---|
| 59 | isl::union_map ProposedWrites, |
|---|
| 60 | llvm::raw_ostream *OS = nullptr, unsigned Indent = 0); |
|---|
| 61 | |
|---|
| 62 | } // namespace polly |
|---|
| 63 | |
|---|
| 64 | namespace llvm { |
|---|
| 65 | void initializeDeLICMWrapperPassPass(llvm::PassRegistry &); |
|---|
| 66 | void initializeDeLICMPrinterLegacyPassPass(llvm::PassRegistry &); |
|---|
| 67 | } // namespace llvm |
|---|
| 68 | |
|---|
| 69 | #endif /* POLLY_DELICM_H */ |
|---|
| 70 | |
|---|
