1 //===- SparcInstrInfo.h - Sparc Instruction Information ---------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file contains the Sparc implementation of the TargetInstrInfo class.
12 //===----------------------------------------------------------------------===//
14 #ifndef SPARCINSTRUCTIONINFO_H
15 #define SPARCINSTRUCTIONINFO_H
17 #include "llvm/Target/TargetInstrInfo.h"
18 #include "SparcRegisterInfo.h"
22 /// SPII - This namespace holds all of the target specific flags that
23 /// instruction info tracks.
34 class SparcInstrInfo : public TargetInstrInfoImpl {
35 const SparcRegisterInfo RI;
36 const SparcSubtarget& Subtarget;
38 explicit SparcInstrInfo(SparcSubtarget &ST);
40 /// getRegisterInfo - TargetInstrInfo is a superset of MRegister info. As
41 /// such, whenever a client has an instance of instruction info, it should
42 /// always be able to get register info as well (through this method).
44 virtual const SparcRegisterInfo &getRegisterInfo() const { return RI; }
46 /// Return true if the instruction is a register to register move and return
47 /// the source and dest operands and their sub-register indices by reference.
48 virtual bool isMoveInstr(const MachineInstr &MI,
49 unsigned &SrcReg, unsigned &DstReg,
50 unsigned &SrcSubIdx, unsigned &DstSubIdx) const;
52 /// isLoadFromStackSlot - If the specified machine instruction is a direct
53 /// load from a stack slot, return the virtual or physical register number of
54 /// the destination along with the FrameIndex of the loaded stack slot. If
55 /// not, return 0. This predicate must return 0 if the instruction has
56 /// any side effects other than loading from the stack slot.
57 virtual unsigned isLoadFromStackSlot(const MachineInstr *MI,
58 int &FrameIndex) const;
60 /// isStoreToStackSlot - If the specified machine instruction is a direct
61 /// store to a stack slot, return the virtual or physical register number of
62 /// the source reg along with the FrameIndex of the loaded stack slot. If
63 /// not, return 0. This predicate must return 0 if the instruction has
64 /// any side effects other than storing to the stack slot.
65 virtual unsigned isStoreToStackSlot(const MachineInstr *MI,
66 int &FrameIndex) const;
69 virtual unsigned InsertBranch(MachineBasicBlock &MBB, MachineBasicBlock *TBB,
70 MachineBasicBlock *FBB,
71 const SmallVectorImpl<MachineOperand> &Cond,
74 virtual bool copyRegToReg(MachineBasicBlock &MBB,
75 MachineBasicBlock::iterator I,
76 unsigned DestReg, unsigned SrcReg,
77 const TargetRegisterClass *DestRC,
78 const TargetRegisterClass *SrcRC,
81 virtual void storeRegToStackSlot(MachineBasicBlock &MBB,
82 MachineBasicBlock::iterator MBBI,
83 unsigned SrcReg, bool isKill, int FrameIndex,
84 const TargetRegisterClass *RC,
85 const TargetRegisterInfo *TRI) const;
87 virtual void loadRegFromStackSlot(MachineBasicBlock &MBB,
88 MachineBasicBlock::iterator MBBI,
89 unsigned DestReg, int FrameIndex,
90 const TargetRegisterClass *RC,
91 const TargetRegisterInfo *TRI) const;
93 virtual MachineInstr* foldMemoryOperandImpl(MachineFunction &MF,
95 const SmallVectorImpl<unsigned> &Ops,
96 int FrameIndex) const;
98 virtual MachineInstr* foldMemoryOperandImpl(MachineFunction &MF,
100 const SmallVectorImpl<unsigned> &Ops,
101 MachineInstr* LoadMI) const {
105 unsigned getGlobalBaseReg(MachineFunction *MF) const;