be0a7e9f27
See D115115 and this mailing list discussion: https://lists.llvm.org/pipermail/llvm-dev/2021-December/154199.html Differential Revision: https://reviews.llvm.org/D115309
47 lines
1.6 KiB
C++
47 lines
1.6 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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using namespace test;
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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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StringRef getArgument() const final { return "test-trait-folder"; }
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StringRef getDescription() const final { return "Run trait folding"; }
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void runOnFunction() override {
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(void)applyPatternsAndFoldGreedily(getFunction(),
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RewritePatternSet(&getContext()));
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}
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};
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} // namespace
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namespace mlir {
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void registerTestTraitsPass() { PassRegistration<TestTraitFolder>(); }
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} // namespace mlir
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