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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93554 91177308-0d34-0410-b5e6-96231b3b80d8
98 lines
3.6 KiB
C++
98 lines
3.6 KiB
C++
//===- MSP430InstrInfo.h - MSP430 Instruction Information -------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file contains the MSP430 implementation of the TargetInstrInfo class.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_TARGET_MSP430INSTRINFO_H
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#define LLVM_TARGET_MSP430INSTRINFO_H
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#include "llvm/Target/TargetInstrInfo.h"
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#include "MSP430RegisterInfo.h"
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namespace llvm {
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class MSP430TargetMachine;
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/// MSP430II - This namespace holds all of the target specific flags that
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/// instruction info tracks.
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///
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namespace MSP430II {
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enum {
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SizeShift = 2,
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SizeMask = 7 << SizeShift,
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SizeUnknown = 0 << SizeShift,
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SizeSpecial = 1 << SizeShift,
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Size2Bytes = 2 << SizeShift,
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Size4Bytes = 3 << SizeShift,
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Size6Bytes = 4 << SizeShift
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};
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}
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class MSP430InstrInfo : public TargetInstrInfoImpl {
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const MSP430RegisterInfo RI;
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MSP430TargetMachine &TM;
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public:
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explicit MSP430InstrInfo(MSP430TargetMachine &TM);
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/// getRegisterInfo - TargetInstrInfo is a superset of MRegister info. As
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/// such, whenever a client has an instance of instruction info, it should
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/// always be able to get register info as well (through this method).
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///
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virtual const TargetRegisterInfo &getRegisterInfo() const { return RI; }
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bool copyRegToReg(MachineBasicBlock &MBB, MachineBasicBlock::iterator I,
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unsigned DestReg, unsigned SrcReg,
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const TargetRegisterClass *DestRC,
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const TargetRegisterClass *SrcRC) const;
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bool isMoveInstr(const MachineInstr& MI,
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unsigned &SrcReg, unsigned &DstReg,
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unsigned &SrcSubIdx, unsigned &DstSubIdx) const;
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virtual void storeRegToStackSlot(MachineBasicBlock &MBB,
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MachineBasicBlock::iterator MI,
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unsigned SrcReg, bool isKill,
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int FrameIndex,
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const TargetRegisterClass *RC) const;
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virtual void loadRegFromStackSlot(MachineBasicBlock &MBB,
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MachineBasicBlock::iterator MI,
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unsigned DestReg, int FrameIdx,
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const TargetRegisterClass *RC) const;
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virtual bool spillCalleeSavedRegisters(MachineBasicBlock &MBB,
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MachineBasicBlock::iterator MI,
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const std::vector<CalleeSavedInfo> &CSI) const;
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virtual bool restoreCalleeSavedRegisters(MachineBasicBlock &MBB,
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MachineBasicBlock::iterator MI,
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const std::vector<CalleeSavedInfo> &CSI) const;
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unsigned GetInstSizeInBytes(const MachineInstr *MI) const;
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// Branch folding goodness
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bool ReverseBranchCondition(SmallVectorImpl<MachineOperand> &Cond) const;
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bool isUnpredicatedTerminator(const MachineInstr *MI) const;
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bool AnalyzeBranch(MachineBasicBlock &MBB,
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MachineBasicBlock *&TBB, MachineBasicBlock *&FBB,
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SmallVectorImpl<MachineOperand> &Cond,
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bool AllowModify) const;
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unsigned RemoveBranch(MachineBasicBlock &MBB) const;
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unsigned InsertBranch(MachineBasicBlock &MBB, MachineBasicBlock *TBB,
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MachineBasicBlock *FBB,
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const SmallVectorImpl<MachineOperand> &Cond) const;
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};
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}
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#endif
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