Lines Matching defs:OldReg

633       Register OldReg = MO.getReg();
643       if (MO.isImplicit() && !MO.isDead() && OldReg == NewReg)
644         ImplicitDefs.push_back(OldReg);
646       if (OldReg == NewReg) {
651       assert(OldReg.isVirtual() && NewReg.isVirtual() &&
654       if (!isProfitableToCSE(NewReg, OldReg, CSMI->getParent(), &MI)) {
663       if (!MRI->constrainRegAttrs(NewReg, OldReg)) {
670       CSEPairs.push_back(std::make_pair(OldReg, NewReg));
677         unsigned OldReg = CSEPair.first;
679         // OldReg may have been unused but is used now, clear the Dead flag
684         MRI->replaceRegWith(OldReg, NewReg);