6024e5c395
clang 20.0.0 (based on r547379) from build 12806354. Bug: http://b/379133546 Test: N/A Change-Id: I2eb8938af55d809de674be63cb30cf27e801862b Upstream-Commit: ad834e67b1105d15ef907f6255d4c96e8e733f57
44 lines
1.5 KiB
C++
44 lines
1.5 KiB
C++
//===- EarlyCSE.h - Simple and fast CSE pass --------------------*- C++ -*-===//
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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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//
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/// \file
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/// This file provides the interface for a simple, fast CSE pass.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_TRANSFORMS_SCALAR_EARLYCSE_H
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#define LLVM_TRANSFORMS_SCALAR_EARLYCSE_H
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#include "llvm/IR/PassManager.h"
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namespace llvm {
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class Function;
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/// A simple and fast domtree-based CSE pass.
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///
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/// This pass does a simple depth-first walk over the dominator tree,
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/// eliminating trivially redundant instructions and using instsimplify to
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/// canonicalize things as it goes. It is intended to be fast and catch obvious
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/// cases so that instcombine and other passes are more effective. It is
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/// expected that a later pass of GVN will catch the interesting/hard cases.
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struct EarlyCSEPass : PassInfoMixin<EarlyCSEPass> {
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EarlyCSEPass(bool UseMemorySSA = false) : UseMemorySSA(UseMemorySSA) {}
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/// Run the pass over the function.
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PreservedAnalyses run(Function &F, FunctionAnalysisManager &AM);
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void printPipeline(raw_ostream &OS,
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function_ref<StringRef(StringRef)> MapClassName2PassName);
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bool UseMemorySSA;
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};
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} // end namespace llvm
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#endif // LLVM_TRANSFORMS_SCALAR_EARLYCSE_H
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