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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76056 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Anton Korobeynikov 2009-07-16 14:32:41 +00:00
parent ae46db85a9
commit 27bf677e59
2 changed files with 66 additions and 0 deletions
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64
lib/Target/SystemZ/SystemZInstrInfo.cpp
View File

@ -182,6 +182,70 @@ SystemZInstrInfo::isMoveInstr(const MachineInstr& MI,
}
}
unsigned SystemZInstrInfo::isLoadFromStackSlot(const MachineInstr *MI,
int &FrameIndex) const {
switch (MI->getOpcode()) {
default: break;
case SystemZ::MOV32rm:
case SystemZ::MOV32rmy:
case SystemZ::MOV64rm:
case SystemZ::MOVSX32rm8:
case SystemZ::MOVSX32rm16y:
case SystemZ::MOVSX64rm8:
case SystemZ::MOVSX64rm16:
case SystemZ::MOVSX64rm32:
case SystemZ::MOVZX32rm8:
case SystemZ::MOVZX32rm16:
case SystemZ::MOVZX64rm8:
case SystemZ::MOVZX64rm16:
case SystemZ::MOVZX64rm32:
case SystemZ::FMOV32rm:
case SystemZ::FMOV32rmy:
case SystemZ::FMOV64rm:
case SystemZ::FMOV64rmy:
if (MI->getOperand(1).isFI() &&
MI->getOperand(2).isImm() && MI->getOperand(3).isReg() &&
MI->getOperand(2).getImm() == 0 && MI->getOperand(3).getReg() == 0) {
FrameIndex = MI->getOperand(1).getIndex();
return MI->getOperand(0).getReg();
}
break;
}
return 0;
}
unsigned SystemZInstrInfo::isStoreToStackSlot(const MachineInstr *MI,
int &FrameIndex) const {
switch (MI->getOpcode()) {
default: break;
case SystemZ::MOV32mr:
case SystemZ::MOV32mry:
case SystemZ::MOV64mr:
case SystemZ::MOV32m8r:
case SystemZ::MOV32m8ry:
case SystemZ::MOV32m16r:
case SystemZ::MOV32m16ry:
case SystemZ::MOV64m8r:
case SystemZ::MOV64m8ry:
case SystemZ::MOV64m16r:
case SystemZ::MOV64m16ry:
case SystemZ::MOV64m32r:
case SystemZ::MOV64m32ry:
case SystemZ::FMOV32mr:
case SystemZ::FMOV32mry:
case SystemZ::FMOV64mr:
case SystemZ::FMOV64mry:
if (MI->getOperand(0).isFI() &&
MI->getOperand(1).isImm() && MI->getOperand(2).isReg() &&
MI->getOperand(1).getImm() == 0 && MI->getOperand(2).getReg() == 0) {
FrameIndex = MI->getOperand(0).getIndex();
return MI->getOperand(3).getReg();
}
break;
}
return 0;
}
bool
SystemZInstrInfo::spillCalleeSavedRegisters(MachineBasicBlock &MBB,
MachineBasicBlock::iterator MI,

2
lib/Target/SystemZ/SystemZInstrInfo.h
View File

@ -68,6 +68,8 @@ public:
bool isMoveInstr(const MachineInstr& MI,
unsigned &SrcReg, unsigned &DstReg,
unsigned &SrcSubIdx, unsigned &DstSubIdx) const;
unsigned isLoadFromStackSlot(const MachineInstr *MI, int &FrameIndex) const;
unsigned isStoreToStackSlot(const MachineInstr *MI, int &FrameIndex) const;
virtual void storeRegToStackSlot(MachineBasicBlock &MBB,
MachineBasicBlock::iterator MI,