4157455425
The only benefit of FunctionPass is that it filters out function declarations. This isn't enough to justify carrying it around, as we can simplify filter out declarations when necessary within the pass. We can also explore with better scheduling primitives to filter out declarations at the pipeline level in the future. The definition of FunctionPass is left intact for now to allow time for downstream users to migrate. Differential Revision: https://reviews.llvm.org/D117182
48 lines
1.7 KiB
C++
48 lines
1.7 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
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: public PassWrapper<TestTraitFolder, OperationPass<FuncOp>> {
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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 runOnOperation() override {
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(void)applyPatternsAndFoldGreedily(getOperation(),
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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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