llvm-6502/include/llvm/MC/MCInstrAnalysis.h
2011-10-17 21:21:44 +00:00

62 lines
1.7 KiB
C++

//===-- llvm/MC/MCInstrAnalysis.h - InstrDesc target hooks ------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file defines the MCInstrAnalysis class which the MCTargetDescs can
// derive from to give additional information to MC.
//
//===----------------------------------------------------------------------===//
#include "llvm/MC/MCInst.h"
#include "llvm/MC/MCInstrDesc.h"
#include "llvm/MC/MCInstrInfo.h"
namespace llvm {
class MCInstrAnalysis {
protected:
friend class Target;
const MCInstrInfo *Info;
public:
MCInstrAnalysis(const MCInstrInfo *Info) : Info(Info) {}
virtual ~MCInstrAnalysis() {}
virtual bool isBranch(const MCInst &Inst) const {
return Info->get(Inst.getOpcode()).isBranch();
}
virtual bool isConditionalBranch(const MCInst &Inst) const {
return Info->get(Inst.getOpcode()).isConditionalBranch();
}
virtual bool isUnconditionalBranch(const MCInst &Inst) const {
return Info->get(Inst.getOpcode()).isUnconditionalBranch();
}
virtual bool isIndirectBranch(const MCInst &Inst) const {
return Info->get(Inst.getOpcode()).isIndirectBranch();
}
virtual bool isCall(const MCInst &Inst) const {
return Info->get(Inst.getOpcode()).isCall();
}
virtual bool isReturn(const MCInst &Inst) const {
return Info->get(Inst.getOpcode()).isReturn();
}
/// evaluateBranch - Given a branch instruction try to get the address the
/// branch targets. Otherwise return -1.
virtual uint64_t
evaluateBranch(const MCInst &Inst, uint64_t Addr, uint64_t Size) const;
};
}