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//===---- BDCE.cpp - Bit-tracking dead code elimination ---------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file implements the Bit-Tracking Dead Code Elimination pass. Some
// instructions (shifts, some ands, ors, etc.) kill some of their input bits.
// We track these dead bits and remove instructions that compute only these
// dead bits.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_TRANSFORMS_SCALAR_BDCE_H
#define LLVM_TRANSFORMS_SCALAR_BDCE_H
#include "llvm/IR/Function.h"
#include "llvm/IR/PassManager.h"
namespace llvm {
// The Bit-Tracking Dead Code Elimination pass.
struct BDCEPass : PassInfoMixin<BDCEPass> {
PreservedAnalyses run(Function &F, FunctionAnalysisManager &AM);
};
}
#endif // LLVM_TRANSFORMS_SCALAR_BDCE_H
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