llvm-6502/lib/Target/SystemZ/SystemZInstrInfo.h
Anton Korobeynikov 6fe326c713 Implement 'large' PIC model
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76006 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-16 14:16:05 +00:00

100 lines
3.7 KiB
C++

//===- SystemZInstrInfo.h - SystemZ Instruction Information -------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file contains the SystemZ implementation of the TargetInstrInfo class.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_TARGET_SYSTEMZINSTRINFO_H
#define LLVM_TARGET_SYSTEMZINSTRINFO_H
#include "SystemZ.h"
#include "SystemZRegisterInfo.h"
#include "llvm/ADT/IndexedMap.h"
#include "llvm/Target/TargetInstrInfo.h"
namespace llvm {
class SystemZTargetMachine;
/// SystemZII - This namespace holds all of the target specific flags that
/// instruction info tracks.
///
namespace SystemZII {
enum {
//===------------------------------------------------------------------===//
// SystemZ Specific MachineOperand flags.
MO_NO_FLAG = 0,
/// MO_GOTENT - On a symbol operand this indicates that the immediate is
/// the offset to the location of the symbol name from the base of the GOT.
///
/// SYMBOL_LABEL @GOTENT
MO_GOTENT = 1,
/// MO_PLT - On a symbol operand this indicates that the immediate is
/// offset to the PLT entry of symbol name from the current code location.
///
/// SYMBOL_LABEL @PLT
MO_PLT = 2
};
}
class SystemZInstrInfo : public TargetInstrInfoImpl {
const SystemZRegisterInfo RI;
SystemZTargetMachine &TM;
IndexedMap<unsigned> RegSpillOffsets;
public:
explicit SystemZInstrInfo(SystemZTargetMachine &TM);
/// getRegisterInfo - TargetInstrInfo is a superset of MRegister info. As
/// such, whenever a client has an instance of instruction info, it should
/// always be able to get register info as well (through this method).
///
virtual const SystemZRegisterInfo &getRegisterInfo() const { return RI; }
bool copyRegToReg(MachineBasicBlock &MBB, MachineBasicBlock::iterator I,
unsigned DestReg, unsigned SrcReg,
const TargetRegisterClass *DestRC,
const TargetRegisterClass *SrcRC) const;
bool isMoveInstr(const MachineInstr& MI,
unsigned &SrcReg, unsigned &DstReg,
unsigned &SrcSubIdx, unsigned &DstSubIdx) const;
virtual void storeRegToStackSlot(MachineBasicBlock &MBB,
MachineBasicBlock::iterator MI,
unsigned SrcReg, bool isKill,
int FrameIndex,
const TargetRegisterClass *RC) const;
virtual void loadRegFromStackSlot(MachineBasicBlock &MBB,
MachineBasicBlock::iterator MI,
unsigned DestReg, int FrameIdx,
const TargetRegisterClass *RC) const;
virtual bool spillCalleeSavedRegisters(MachineBasicBlock &MBB,
MachineBasicBlock::iterator MI,
const std::vector<CalleeSavedInfo> &CSI) const;
virtual bool restoreCalleeSavedRegisters(MachineBasicBlock &MBB,
MachineBasicBlock::iterator MI,
const std::vector<CalleeSavedInfo> &CSI) const;
virtual unsigned InsertBranch(MachineBasicBlock &MBB, MachineBasicBlock *TBB,
MachineBasicBlock *FBB,
const SmallVectorImpl<MachineOperand> &Cond) const;
const TargetInstrDesc& getBrCond(SystemZCC::CondCodes CC) const;
const TargetInstrDesc& getLongDispOpc(unsigned Opc) const;
};
}
#endif