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File indexing completed on 2026-05-10 08:44:41
0001 //===---- BDCE.cpp - Bit-tracking dead code elimination ---------*- C++ -*-===// 0002 // 0003 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 0004 // See https://llvm.org/LICENSE.txt for license information. 0005 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 0006 // 0007 //===----------------------------------------------------------------------===// 0008 // 0009 // This file implements the Bit-Tracking Dead Code Elimination pass. Some 0010 // instructions (shifts, some ands, ors, etc.) kill some of their input bits. 0011 // We track these dead bits and remove instructions that compute only these 0012 // dead bits. 0013 // 0014 //===----------------------------------------------------------------------===// 0015 0016 #ifndef LLVM_TRANSFORMS_SCALAR_BDCE_H 0017 #define LLVM_TRANSFORMS_SCALAR_BDCE_H 0018 0019 #include "llvm/IR/PassManager.h" 0020 0021 namespace llvm { 0022 0023 class Function; 0024 0025 // The Bit-Tracking Dead Code Elimination pass. 0026 struct BDCEPass : PassInfoMixin<BDCEPass> { 0027 PreservedAnalyses run(Function &F, FunctionAnalysisManager &AM); 0028 }; 0029 } 0030 0031 #endif // LLVM_TRANSFORMS_SCALAR_BDCE_H
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