// In a return block, examine the function live-out regs.
for (MachineRegisterInfo::liveout_iterator I = MRI.liveout_begin(),
E = MRI.liveout_end(); I != E; ++I) {
- unsigned Reg = *I;
- State->UnionGroups(Reg, 0);
- KillIndices[Reg] = BB->size();
- DefIndices[Reg] = ~0u;
- // Repeat, for all aliases.
- for (const unsigned *Alias = TRI->getAliasSet(Reg); *Alias; ++Alias) {
- unsigned AliasReg = *Alias;
- State->UnionGroups(AliasReg, 0);
- KillIndices[AliasReg] = BB->size();
- DefIndices[AliasReg] = ~0u;
+ for (const unsigned *Alias = TRI->getOverlaps(*I);
+ unsigned Reg = *Alias; ++Alias) {
+ State->UnionGroups(Reg, 0);
+ KillIndices[Reg] = BB->size();
+ DefIndices[Reg] = ~0u;
}
}
}
SE = BB->succ_end(); SI != SE; ++SI)
for (MachineBasicBlock::livein_iterator I = (*SI)->livein_begin(),
E = (*SI)->livein_end(); I != E; ++I) {
- unsigned Reg = *I;
- State->UnionGroups(Reg, 0);
- KillIndices[Reg] = BB->size();
- DefIndices[Reg] = ~0u;
- // Repeat, for all aliases.
- for (const unsigned *Alias = TRI->getAliasSet(Reg); *Alias; ++Alias) {
- unsigned AliasReg = *Alias;
- State->UnionGroups(AliasReg, 0);
- KillIndices[AliasReg] = BB->size();
- DefIndices[AliasReg] = ~0u;
+ for (const unsigned *Alias = TRI->getOverlaps(*I);
+ unsigned Reg = *Alias; ++Alias) {
+ State->UnionGroups(Reg, 0);
+ KillIndices[Reg] = BB->size();
+ DefIndices[Reg] = ~0u;
}
}
for (const unsigned *I = TRI->getCalleeSavedRegs(); *I; ++I) {
unsigned Reg = *I;
if (!IsReturnBlock && !Pristine.test(Reg)) continue;
- State->UnionGroups(Reg, 0);
- KillIndices[Reg] = BB->size();
- DefIndices[Reg] = ~0u;
- // Repeat, for all aliases.
- for (const unsigned *Alias = TRI->getAliasSet(Reg); *Alias; ++Alias) {
- unsigned AliasReg = *Alias;
+ for (const unsigned *Alias = TRI->getOverlaps(Reg);
+ unsigned AliasReg = *Alias; ++Alias) {
State->UnionGroups(AliasReg, 0);
KillIndices[AliasReg] = BB->size();
DefIndices[AliasReg] = ~0u;
continue;
// Update def for Reg and aliases.
- DefIndices[Reg] = Count;
- for (const unsigned *Alias = TRI->getAliasSet(Reg);
- *Alias; ++Alias) {
- unsigned AliasReg = *Alias;
+ for (const unsigned *Alias = TRI->getOverlaps(Reg);
+ unsigned AliasReg = *Alias; ++Alias)
DefIndices[AliasReg] = Count;
- }
}
}