Lines Matching defs:OldReg

635       Register OldReg = MO.getReg();
645       if (MO.isImplicit() && !MO.isDead() && OldReg == NewReg)
646         ImplicitDefs.push_back(OldReg);
648       if (OldReg == NewReg) {
653       assert(OldReg.isVirtual() && NewReg.isVirtual() &&
656       if (!isProfitableToCSE(NewReg, OldReg, CSMI->getParent(), &MI)) {
665       if (!MRI->constrainRegAttrs(NewReg, OldReg)) {
672       CSEPairs.push_back(std::make_pair(OldReg, NewReg));
679         unsigned OldReg = CSEPair.first;
681         // OldReg may have been unused but is used now, clear the Dead flag
686         MRI->replaceRegWith(OldReg, NewReg);