MarkVirtRegAliveInBlock(VRInfo, MRI->getVRegDef(reg)->getParent(), *PI);
}
+void LiveVariables::HandleVirtRegDef(unsigned Reg, MachineInstr *MI) {
+ VarInfo &VRInfo = getVarInfo(Reg);
+
+ if (VRInfo.AliveBlocks.none())
+ // If vr is not alive in any block, then defaults to dead.
+ VRInfo.Kills.push_back(MI);
+}
+
/// FindLastPartialDef - Return the last partial def of the specified register.
/// Also returns the sub-register that's defined.
MachineInstr *LiveVariables::FindLastPartialDef(unsigned Reg,
const MachineOperand &MO = MI->getOperand(i);
if (MO.isRegister() && MO.getReg()) {
unsigned MOReg = MO.getReg();
- if (!MOReg)
- continue;
if (MO.isUse())
UseRegs.push_back(MOReg);
if (MO.isDef())
unsigned MOReg = UseRegs[i];
if (TargetRegisterInfo::isVirtualRegister(MOReg))
HandleVirtRegUse(MOReg, MBB, MI);
- else if (TargetRegisterInfo::isPhysicalRegister(MOReg) &&
- !ReservedRegisters[MOReg])
+ else if (!ReservedRegisters[MOReg])
HandlePhysRegUse(MOReg, MI);
}
// Process all defs.
for (unsigned i = 0, e = DefRegs.size(); i != e; ++i) {
unsigned MOReg = DefRegs[i];
- if (TargetRegisterInfo::isVirtualRegister(MOReg)) {
- VarInfo &VRInfo = getVarInfo(MOReg);
-
- if (VRInfo.AliveBlocks.none())
- // If vr is not alive in any block, then defaults to dead.
- VRInfo.Kills.push_back(MI);
- } else if (TargetRegisterInfo::isPhysicalRegister(MOReg) &&
- !ReservedRegisters[MOReg]) {
+ if (TargetRegisterInfo::isVirtualRegister(MOReg))
+ HandleVirtRegDef(MOReg, MI);
+ else if (!ReservedRegisters[MOReg])
HandlePhysRegDef(MOReg, MI);
- }
}
}