49 lines
1.8 KiB
C++
49 lines
1.8 KiB
C++
//===- AlgebraicSimplification.cpp - Simplify algebraic expressions -------===//
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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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// This file defines a pass that applies algebraic simplifications
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// to operations of Math/Complex/etc. dialects that are used by Flang.
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// It is done as a Flang specific pass, because we may want to tune
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// the parameters of the patterns for Fortran programs.
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//===----------------------------------------------------------------------===//
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#include "PassDetail.h"
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#include "flang/Optimizer/Transforms/Passes.h"
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#include "mlir/Dialect/Math/Transforms/Passes.h"
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#include "mlir/Transforms/GreedyPatternRewriteDriver.h"
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using namespace mlir;
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namespace {
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struct AlgebraicSimplification
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: public fir::AlgebraicSimplificationBase<AlgebraicSimplification> {
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AlgebraicSimplification(const GreedyRewriteConfig &rewriteConfig) {
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config = rewriteConfig;
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}
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void runOnOperation() override;
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mlir::GreedyRewriteConfig config;
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};
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} // namespace
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void AlgebraicSimplification::runOnOperation() {
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RewritePatternSet patterns(&getContext());
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populateMathAlgebraicSimplificationPatterns(patterns);
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(void)applyPatternsAndFoldGreedily(getOperation(), std::move(patterns),
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config);
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}
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std::unique_ptr<mlir::Pass> fir::createAlgebraicSimplificationPass() {
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return std::make_unique<AlgebraicSimplification>(GreedyRewriteConfig());
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}
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std::unique_ptr<mlir::Pass> fir::createAlgebraicSimplificationPass(
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const mlir::GreedyRewriteConfig &config) {
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return std::make_unique<AlgebraicSimplification>(config);
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}
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