| 1 | //===- AffineScalarReplacement.cpp - Affine scalar replacement pass -------===// |
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| 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 implements a pass to forward affine memref stores to loads, thereby |
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| 10 | // potentially getting rid of intermediate memrefs entirely. It also removes |
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| 11 | // redundant loads. |
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| 12 | //===----------------------------------------------------------------------===// |
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| 13 | |
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| 14 | #include "mlir/Dialect/Affine/Passes.h" |
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| 15 | |
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| 16 | #include "mlir/Analysis/AliasAnalysis.h" |
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| 17 | #include "mlir/Dialect/Affine/Utils.h" |
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| 18 | #include "mlir/Dialect/Func/IR/FuncOps.h" |
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| 19 | #include "mlir/IR/Dominance.h" |
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| 20 | #include <algorithm> |
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| 21 | |
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| 22 | namespace mlir { |
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| 23 | namespace affine { |
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| 24 | #define GEN_PASS_DEF_AFFINESCALARREPLACEMENT |
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| 25 | #include "mlir/Dialect/Affine/Passes.h.inc" |
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| 26 | } // namespace affine |
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| 27 | } // namespace mlir |
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| 28 | |
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| 29 | #define DEBUG_TYPE "affine-scalrep" |
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| 30 | |
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| 31 | using namespace mlir; |
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| 32 | using namespace mlir::affine; |
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| 33 | |
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| 34 | namespace { |
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| 35 | struct AffineScalarReplacement |
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| 36 | : public affine::impl::AffineScalarReplacementBase< |
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| 37 | AffineScalarReplacement> { |
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| 38 | void runOnOperation() override; |
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| 39 | }; |
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| 40 | |
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| 41 | } // namespace |
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| 42 | |
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| 43 | std::unique_ptr<OperationPass<func::FuncOp>> |
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| 44 | mlir::affine::createAffineScalarReplacementPass() { |
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| 45 | return std::make_unique<AffineScalarReplacement>(); |
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| 46 | } |
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| 47 | |
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| 48 | void AffineScalarReplacement::runOnOperation() { |
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| 49 | affineScalarReplace(getOperation(), getAnalysis<DominanceInfo>(), |
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| 50 | getAnalysis<PostDominanceInfo>(), |
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| 51 | getAnalysis<AliasAnalysis>()); |
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| 52 | } |
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| 53 | |
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