// First scan.
// Mark physreg uses and early clobbers as used.
+ // Find the end of the virtreg operands
+ unsigned VirtOpEnd = 0;
for (unsigned i = 0, e = MI->getNumOperands(); i != e; ++i) {
MachineOperand &MO = MI->getOperand(i);
if (!MO.isReg()) continue;
unsigned Reg = MO.getReg();
- if (!Reg || !TargetRegisterInfo::isPhysicalRegister(Reg) ||
- ReservedRegs.test(Reg)) continue;
+ if (!Reg) continue;
+ if (TargetRegisterInfo::isVirtualRegister(Reg)) {
+ VirtOpEnd = i+1;
+ continue;
+ }
+ if (ReservedRegs.test(Reg)) continue;
if (MO.isUse()) {
usePhysReg(MO);
} else if (MO.isEarlyClobber()) {
}
}
-
// Second scan.
// Allocate virtreg uses and early clobbers.
// Collect VirtKills
- for (unsigned i = 0, e = MI->getNumOperands(); i != e; ++i) {
+ for (unsigned i = 0; i != VirtOpEnd; ++i) {
MachineOperand &MO = MI->getOperand(i);
if (!MO.isReg()) continue;
unsigned Reg = MO.getReg();