bc657b2eef
NFC. Move out and expose affine scalar replacement utility through affine utils. Renaming misleading forwardStoreToLoad -> affineScalarReplace. Update a stale doc comment. Differential Revision: https://reviews.llvm.org/D115495
45 lines
1.5 KiB
C++
45 lines
1.5 KiB
C++
//===- AffineScalarReplacement.cpp - Affine scalar replacement pass -------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file implements a pass to forward affine memref stores to loads, thereby
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// potentially getting rid of intermediate memrefs entirely. It also removes
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// redundant loads.
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// TODO: In the future, similar techniques could be used to eliminate
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// dead memref store's and perform more complex forwarding when support for
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// SSA scalars live out of 'affine.for'/'affine.if' statements is available.
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//===----------------------------------------------------------------------===//
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#include "mlir/Dialect/Affine/Passes.h"
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#include "PassDetail.h"
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#include "mlir/Dialect/Affine/Utils.h"
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#include "mlir/IR/Dominance.h"
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#include "mlir/Support/LogicalResult.h"
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#include <algorithm>
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#define DEBUG_TYPE "affine-scalrep"
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using namespace mlir;
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namespace {
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struct AffineScalarReplacement
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: public AffineScalarReplacementBase<AffineScalarReplacement> {
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void runOnFunction() override;
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};
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} // namespace
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std::unique_ptr<FunctionPass> mlir::createAffineScalarReplacementPass() {
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return std::make_unique<AffineScalarReplacement>();
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}
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void AffineScalarReplacement::runOnFunction() {
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affineScalarReplace(getFunction(), getAnalysis<DominanceInfo>(),
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getAnalysis<PostDominanceInfo>());
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}
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