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//===- AlgebraicSimplification.cpp - Simplify algebraic expressions -------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// This file defines a pass that applies algebraic simplifications
// to operations of Math/Complex/etc. dialects that are used by Flang.
// It is done as a Flang specific pass, because we may want to tune
// the parameters of the patterns for Fortran programs.
//===----------------------------------------------------------------------===//
#include "flang/Optimizer/Transforms/Passes.h"
#include "mlir/Dialect/Math/IR/Math.h"
#include "mlir/Dialect/Math/Transforms/Passes.h"
#include "mlir/Transforms/GreedyPatternRewriteDriver.h"
namespace fir {
#define GEN_PASS_DEF_ALGEBRAICSIMPLIFICATION
#include "flang/Optimizer/Transforms/Passes.h.inc"
} // namespace fir
using namespace mlir;
namespace {
struct AlgebraicSimplification
: public fir::impl::AlgebraicSimplificationBase<AlgebraicSimplification> {
AlgebraicSimplification(const GreedyRewriteConfig &rewriteConfig) {
config = rewriteConfig;
}
void runOnOperation() override;
mlir::GreedyRewriteConfig config;
};
} // namespace
void AlgebraicSimplification::runOnOperation() {
RewritePatternSet patterns(&getContext());
populateMathAlgebraicSimplificationPatterns(patterns);
(void)applyPatternsGreedily(getOperation(), std::move(patterns), config);
}
std::unique_ptr<mlir::Pass> fir::createAlgebraicSimplificationPass() {
return std::make_unique<AlgebraicSimplification>(GreedyRewriteConfig());
}
std::unique_ptr<mlir::Pass> fir::createAlgebraicSimplificationPass(
const mlir::GreedyRewriteConfig &config) {
return std::make_unique<AlgebraicSimplification>(config);
}
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