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When adding a register, we should mark it as "def" if it can optionally define 

said (physical) register.

llvm-svn: 112461
This commit is contained in:
Bill Wendling 2010-08-30 01:36:05 +00:00
parent 8591e9e06f
commit 938f299fa9
1 changed files with 4 additions and 2 deletions
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6
llvm/lib/CodeGen/SelectionDAG/InstrEmitter.cpp
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@ -253,7 +253,6 @@ unsigned InstrEmitter::getVR(SDValue Op,
return I->second;
}
/// AddRegisterOperand - Add the specified register as an operand to the
/// specified machine instr. Insert register copies if the register is
/// not in the required register class.
@ -337,7 +336,10 @@ void InstrEmitter::AddOperand(MachineInstr *MI, SDValue Op,
const ConstantFP *CFP = F->getConstantFPValue();
MI->addOperand(MachineOperand::CreateFPImm(CFP));
} else if (RegisterSDNode *R = dyn_cast<RegisterSDNode>(Op)) {
MI->addOperand(MachineOperand::CreateReg(R->getReg(), false));
unsigned Reg = R->getReg();
const TargetInstrDesc &TID = MI->getDesc();
MI->addOperand(MachineOperand::CreateReg(Reg,
(Reg == 0 || !TID.OpInfo) ? false : TID.OpInfo[IIOpNum].isOptionalDef()));
} else if (GlobalAddressSDNode *TGA = dyn_cast<GlobalAddressSDNode>(Op)) {
MI->addOperand(MachineOperand::CreateGA(TGA->getGlobal(), TGA->getOffset(),
TGA->getTargetFlags()));