38 lines
1.4 KiB
C++
38 lines
1.4 KiB
C++
//===- ADCE.h - Aggressive dead code elimination ----------------*- 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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// This file provides the interface for the Aggressive Dead Code Elimination
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// pass. This pass optimistically assumes that all instructions are dead until
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// proven otherwise, allowing it to eliminate dead computations that other DCE
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// passes do not catch, particularly involving loop computations.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_TRANSFORMS_SCALAR_ADCE_H
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#define LLVM_TRANSFORMS_SCALAR_ADCE_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 DCE pass that assumes instructions are dead until proven otherwise.
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///
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/// This pass eliminates dead code by optimistically assuming that all
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/// instructions are dead until proven otherwise. This allows it to eliminate
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/// dead computations that other DCE passes do not catch, particularly involving
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/// loop computations.
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struct ADCEPass : PassInfoMixin<ADCEPass> {
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PreservedAnalyses run(Function &F, FunctionAnalysisManager &);
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};
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} // end namespace llvm
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#endif // LLVM_TRANSFORMS_SCALAR_ADCE_H
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