- DEBUG(std::cerr << " Spilling register " << RegInfo->getName(PhysReg);
- std::cerr << " containing %reg" << VirtReg;
- if (!isVirtRegModified(VirtReg))
- std::cerr << " which has not been modified, so no store necessary!");
-
- // Otherwise, there is a virtual register corresponding to this physical
- // register. We only need to spill it into its stack slot if it has been
- // modified.
- if (isVirtRegModified(VirtReg)) {
- const TargetRegisterClass *RC = MF->getSSARegMap()->getRegClass(VirtReg);
+ DOUT << " Spilling register " << TRI->getName(PhysReg)
+ << " containing %reg" << VirtReg;
+
+ const TargetInstrInfo* TII = MBB.getParent()->getTarget().getInstrInfo();
+
+ if (!isVirtRegModified(VirtReg)) {
+ DOUT << " which has not been modified, so no store necessary!";
+ std::pair<MachineInstr*, unsigned> &LastUse = getVirtRegLastUse(VirtReg);
+ if (LastUse.first)
+ LastUse.first->getOperand(LastUse.second).setIsKill();
+ } else {
+ // Otherwise, there is a virtual register corresponding to this physical
+ // register. We only need to spill it into its stack slot if it has been
+ // modified.
+ const TargetRegisterClass *RC = MF->getRegInfo().getRegClass(VirtReg);