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
45 lines
1.5 KiB
C++
45 lines
1.5 KiB
C++
//===- TestTraits.cpp - Test trait folding --------------------------------===//
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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 "TestDialect.h"
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#include "mlir/Pass/Pass.h"
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#include "mlir/Transforms/GreedyPatternRewriteDriver.h"
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using namespace mlir;
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//===----------------------------------------------------------------------===//
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// Trait Folder.
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//===----------------------------------------------------------------------===//
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OpFoldResult TestInvolutionTraitFailingOperationFolderOp::fold(
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ArrayRef<Attribute> operands) {
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// This failure should cause the trait fold to run instead.
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return {};
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}
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OpFoldResult TestInvolutionTraitSuccesfulOperationFolderOp::fold(
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ArrayRef<Attribute> operands) {
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auto argumentOp = getOperand();
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// The success case should cause the trait fold to be supressed.
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return argumentOp.getDefiningOp() ? argumentOp : OpFoldResult{};
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}
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namespace {
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struct TestTraitFolder : public PassWrapper<TestTraitFolder, FunctionPass> {
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void runOnFunction() override {
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applyPatternsAndFoldGreedily(getFunction(), OwningRewritePatternList());
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}
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};
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} // end anonymous namespace
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namespace mlir {
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void registerTestTraitsPass() {
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PassRegistration<TestTraitFolder>("test-trait-folder", "Run trait folding");
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}
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} // namespace mlir
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