} else
DOUT << "Removing now-noop copy: " << MI;
- // Extend the live range of the MI that last kill the register if
- // the next MI reuse it.
+ // Either way, the live range of the last kill of InReg has been
+ // extended. Remove its kill.
MachineOperand *MOK = SSMI->findRegisterUseOperand(InReg, true);
if (MOK && NextMII != MBB.end()) {
+ MOK->unsetIsKill();
+ // If NextMII uses InReg (must be the copy?), mark it killed.
MachineOperand *MOU = NextMII->findRegisterUseOperand(InReg);
if (MOU) {
MOU->setIsKill();
- MOK->unsetIsKill();
Spills.UpdateLastUse(InReg, &(*NextMII));
}
}