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commuteInstruction should preserve dead markers. 

llvm-svn: 53060
This commit is contained in:
Evan Cheng 2008-07-03 00:04:51 +00:00
parent 30cc028e4a
commit c939f45fe7
1 changed files with 3 additions and 1 deletions
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4
llvm/lib/Target/X86/X86InstrInfo.cpp
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@ -1214,6 +1214,7 @@ X86InstrInfo::commuteInstruction(MachineInstr *MI, bool NewMI) const {
unsigned A = MI->getOperand(0).getReg();
unsigned B = MI->getOperand(1).getReg();
unsigned C = MI->getOperand(2).getReg();
bool AisDead = MI->getOperand(0).isDead();
bool BisKill = MI->getOperand(1).isKill();
bool CisKill = MI->getOperand(2).isKill();
// If machine instrs are no longer in two-address forms, update
@ -1225,7 +1226,8 @@ X86InstrInfo::commuteInstruction(MachineInstr *MI, bool NewMI) const {
A = C;
CisKill = false;
}
return BuildMI(get(Opc), A).addReg(C, false, false, CisKill)
return BuildMI(get(Opc)).addReg(A, true, false, false, AisDead)
.addReg(C, false, false, CisKill)
.addReg(B, false, false, BisKill).addImm(Size-Amt);
}
case X86::CMOVB16rr: