AddressSanitizerCommon.h

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//===--------- Definition of the AddressSanitizer class ---------*- C++ -*-===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file declares common infrastructure for AddressSanitizer and
// HWAddressSanitizer.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_TRANSFORMS_INSTRUMENTATION_ADDRESSSANITIZERCOMMON_H
#define LLVM_TRANSFORMS_INSTRUMENTATION_ADDRESSSANITIZERCOMMON_H

#include "llvm/IR/Instruction.h"
#include "llvm/IR/Module.h"

namespace llvm {

class InterestingMemoryOperand {
public:
  Use *PtrUse;
  bool IsWrite;
  Type *OpType;
  uint64_t TypeSize;
  MaybeAlign Alignment;
  // The mask Value, if we're looking at a masked load/store.
  Value *MaybeMask;

  InterestingMemoryOperand(Instruction *I, unsigned OperandNo, bool IsWrite,
                           class Type *OpType, MaybeAlign Alignment,
                           Value *MaybeMask = nullptr)
      : IsWrite(IsWrite), OpType(OpType), Alignment(Alignment),
        MaybeMask(MaybeMask) {
    const DataLayout &DL = I->getModule()->getDataLayout();
    TypeSize = DL.getTypeStoreSizeInBits(OpType);
    PtrUse = &I->getOperandUse(OperandNo);
  }

  Instruction *getInsn() { return cast<Instruction>(PtrUse->getUser()); }

  Value *getPtr() { return PtrUse->get(); }
};

} // namespace llvm

#endif