// Mark live-in registers as live-in.
SmallVector<unsigned, 4> Defs;
- for (MachineBasicBlock::const_livein_iterator II = MBB->livein_begin(),
+ for (MachineBasicBlock::livein_iterator II = MBB->livein_begin(),
EE = MBB->livein_end(); II != EE; ++II) {
assert(TargetRegisterInfo::isPhysicalRegister(*II) &&
"Cannot have a live-in virtual register!");
if (MI->isPHI())
NumOperandsToProcess = 1;
+ // Clear kill and dead markers. LV will recompute them.
SmallVector<unsigned, 4> UseRegs;
SmallVector<unsigned, 4> DefRegs;
for (unsigned i = 0; i != NumOperandsToProcess; ++i) {
- const MachineOperand &MO = MI->getOperand(i);
+ MachineOperand &MO = MI->getOperand(i);
if (!MO.isReg() || MO.getReg() == 0)
continue;
unsigned MOReg = MO.getReg();
- if (MO.isUse())
+ if (MO.isUse()) {
+ MO.setIsKill(false);
UseRegs.push_back(MOReg);
- if (MO.isDef())
+ } else /*MO.isDef()*/ {
+ MO.setIsDead(false);
DefRegs.push_back(MOReg);
+ }
}
// Process all uses.