// Examine each operand.
for (unsigned i = 0, e = MI->getNumOperands(); i != e; ++i) {
const MachineOperand &MO = MI->getOperand(i);
- if (MO.isRegister() && MO.isDef()) {
+ if (MO.isReg() && MO.isDef()) {
unsigned Reg = MO.getReg();
if (TargetRegisterInfo::isPhysicalRegister(Reg) ?
LivePhysRegs[Reg] : !MRI->use_empty(Reg)) {
// Record the physreg defs.
for (unsigned i = 0, e = MI->getNumOperands(); i != e; ++i) {
const MachineOperand &MO = MI->getOperand(i);
- if (MO.isRegister() && MO.isDef()) {
+ if (MO.isReg() && MO.isDef()) {
unsigned Reg = MO.getReg();
if (Reg != 0 && TargetRegisterInfo::isPhysicalRegister(Reg)) {
LivePhysRegs.reset(Reg);
- for (const unsigned *AliasSet = TRI->getAliasSet(Reg);
- *AliasSet; ++AliasSet)
- LivePhysRegs.reset(*AliasSet);
+ // Check the subreg set, not the alias set, because a def
+ // of a super-register may still be partially live after
+ // this def.
+ for (const unsigned *SubRegs = TRI->getSubRegisters(Reg);
+ *SubRegs; ++SubRegs)
+ LivePhysRegs.reset(*SubRegs);
}
}
}
// both defined and used in the same instruction.
for (unsigned i = 0, e = MI->getNumOperands(); i != e; ++i) {
const MachineOperand &MO = MI->getOperand(i);
- if (MO.isRegister() && MO.isUse()) {
+ if (MO.isReg() && MO.isUse()) {
unsigned Reg = MO.getReg();
if (Reg != 0 && TargetRegisterInfo::isPhysicalRegister(Reg)) {
LivePhysRegs.set(Reg);