4157455425
The only benefit of FunctionPass is that it filters out function declarations. This isn't enough to justify carrying it around, as we can simplify filter out declarations when necessary within the pass. We can also explore with better scheduling primitives to filter out declarations at the pipeline level in the future. The definition of FunctionPass is left intact for now to allow time for downstream users to migrate. Differential Revision: https://reviews.llvm.org/D117182
46 lines
1.6 KiB
C++
46 lines
1.6 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 runOnOperation() override;
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};
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} // namespace
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std::unique_ptr<OperationPass<FuncOp>>
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mlir::createAffineScalarReplacementPass() {
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return std::make_unique<AffineScalarReplacement>();
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}
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void AffineScalarReplacement::runOnOperation() {
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affineScalarReplace(getOperation(), getAnalysis<DominanceInfo>(),
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getAnalysis<PostDominanceInfo>());
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}
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