31 lines
1.0 KiB
C++
31 lines
1.0 KiB
C++
//===---- BDCE.cpp - Bit-tracking 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 implements the Bit-Tracking Dead Code Elimination pass. Some
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// instructions (shifts, some ands, ors, etc.) kill some of their input bits.
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// We track these dead bits and remove instructions that compute only these
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// dead bits.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_TRANSFORMS_SCALAR_BDCE_H
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#define LLVM_TRANSFORMS_SCALAR_BDCE_H
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#include "llvm/IR/Function.h"
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#include "llvm/IR/PassManager.h"
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namespace llvm {
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// The Bit-Tracking Dead Code Elimination pass.
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struct BDCEPass : PassInfoMixin<BDCEPass> {
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PreservedAnalyses run(Function &F, FunctionAnalysisManager &AM);
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};
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}
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#endif // LLVM_TRANSFORMS_SCALAR_BDCE_H
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