// Emit a copy or rematerialize the definition.
bool isCopy = false;
const TargetRegisterClass *rc = MRI->getRegClass(regB);
- MachineInstr *DefMI = MRI->getVRegDef(regB);
+ MachineInstr *DefMI = MRI->getUniqueVRegDef(regB);
// If it's safe and profitable, remat the definition instead of
// copying it.
if (DefMI &&
continue;
// Check that the instructions are all in the same basic block.
- MachineInstr *SrcDefMI = MRI->getVRegDef(SrcReg);
- MachineInstr *DstDefMI = MRI->getVRegDef(DstReg);
- if (SrcDefMI->getParent() != DstDefMI->getParent())
+ MachineInstr *SrcDefMI = MRI->getUniqueVRegDef(SrcReg);
+ MachineInstr *DstDefMI = MRI->getUniqueVRegDef(DstReg);
+ if (!SrcDefMI || !DstDefMI ||
+ SrcDefMI->getParent() != DstDefMI->getParent())
continue;
// If there are no other uses than copies which feed into
MachineInstr *DefMI = NULL;
if (!MI->getOperand(i).getSubReg() &&
!TargetRegisterInfo::isPhysicalRegister(SrcReg)) {
- DefMI = MRI->getVRegDef(SrcReg);
+ DefMI = MRI->getUniqueVRegDef(SrcReg);
}
if (DefMI && DefMI->isImplicitDef()) {