3fffffa882
This class represents a rewrite pattern list that has been frozen, and thus immutable. This replaces the uses of OwningRewritePatternList in pattern driver related API, such as dialect conversion. When PDL becomes more prevalent, this API will allow for optimizing a set of patterns once without the need to do this per run of a pass. Differential Revision: https://reviews.llvm.org/D89104
66 lines
2.1 KiB
C++
66 lines
2.1 KiB
C++
//===-- RemoveShapeConstraints.cpp - Remove Shape Cstr and Assuming Ops ---===//
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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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#include "PassDetail.h"
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#include "mlir/Dialect/Shape/IR/Shape.h"
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#include "mlir/Dialect/Shape/Transforms/Passes.h"
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#include "mlir/Transforms/DialectConversion.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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/// Removal patterns.
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class RemoveCstrBroadcastableOp
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: public OpRewritePattern<shape::CstrBroadcastableOp> {
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public:
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using OpRewritePattern::OpRewritePattern;
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LogicalResult matchAndRewrite(shape::CstrBroadcastableOp op,
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PatternRewriter &rewriter) const override {
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rewriter.replaceOpWithNewOp<shape::ConstWitnessOp>(op.getOperation(), true);
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return success();
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}
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};
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class RemoveCstrEqOp : public OpRewritePattern<shape::CstrEqOp> {
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public:
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using OpRewritePattern::OpRewritePattern;
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LogicalResult matchAndRewrite(shape::CstrEqOp op,
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PatternRewriter &rewriter) const override {
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rewriter.replaceOpWithNewOp<shape::ConstWitnessOp>(op.getOperation(), true);
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return success();
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}
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};
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/// Removal pass.
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class RemoveShapeConstraintsPass
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: public RemoveShapeConstraintsBase<RemoveShapeConstraintsPass> {
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void runOnFunction() override {
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MLIRContext &ctx = getContext();
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OwningRewritePatternList patterns;
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populateRemoveShapeConstraintsPatterns(patterns, &ctx);
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applyPatternsAndFoldGreedily(getFunction(), std::move(patterns));
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}
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};
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} // namespace
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void mlir::populateRemoveShapeConstraintsPatterns(
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OwningRewritePatternList &patterns, MLIRContext *ctx) {
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patterns.insert<RemoveCstrBroadcastableOp, RemoveCstrEqOp>(ctx);
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}
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std::unique_ptr<FunctionPass> mlir::createRemoveShapeConstraintsPass() {
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return std::make_unique<RemoveShapeConstraintsPass>();
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}
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