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Properly transfer kill / dead info.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31765 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng
2006-11-15 20:58:11 +00:00
parent ddd2a4556a
commit 6ce7dc2a97
6 changed files with 82 additions and 41 deletions
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14
lib/Target/Sparc/SparcRegisterInfo.cpp
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@@ -77,15 +77,16 @@ MachineInstr *SparcRegisterInfo::foldMemoryOperand(MachineInstr* MI,
unsigned OpNum,
int FI) const {
bool isFloat = false;
MachineInstr *NewMI = NULL;
switch (MI->getOpcode()) {
case SP::ORrr:
if (MI->getOperand(1).isRegister() && MI->getOperand(1).getReg() == SP::G0&&
MI->getOperand(0).isRegister() && MI->getOperand(2).isRegister()) {
if (OpNum == 0) // COPY -> STORE
return BuildMI(TII, SP::STri, 3).addFrameIndex(FI).addImm(0)
NewMI = BuildMI(TII, SP::STri, 3).addFrameIndex(FI).addImm(0)
.addReg(MI->getOperand(2).getReg());
else // COPY -> LOAD
return BuildMI(TII, SP::LDri, 2, MI->getOperand(0).getReg())
NewMI = BuildMI(TII, SP::LDri, 2, MI->getOperand(0).getReg())
.addFrameIndex(FI).addImm(0);
}
break;
@@ -94,14 +95,17 @@ MachineInstr *SparcRegisterInfo::foldMemoryOperand(MachineInstr* MI,
// FALLTHROUGH
case SP::FMOVD:
if (OpNum == 0) // COPY -> STORE
return BuildMI(TII, isFloat ? SP::STFri : SP::STDFri, 3)
NewMI = BuildMI(TII, isFloat ? SP::STFri : SP::STDFri, 3)
.addFrameIndex(FI).addImm(0).addReg(MI->getOperand(1).getReg());
else // COPY -> LOAD
return BuildMI(TII, isFloat ? SP::LDFri : SP::LDDFri, 2,
NewMI = BuildMI(TII, isFloat ? SP::LDFri : SP::LDDFri, 2,
MI->getOperand(0).getReg()).addFrameIndex(FI).addImm(0);
break;
}
return 0;
if (NewMI)
NewMI->copyKillDeadInfo(MI);
return NewMI;
}
const unsigned* SparcRegisterInfo::getCalleeSaveRegs() const {