128   for (auto &II : instructionsWithoutDebug(MBB.rbegin(), MBB.rend())) {  in optimizeNZCVDefs()  local
129     LRU.stepBackward(II);  in optimizeNZCVDefs()
133       if (InsideCmpRange && &II == FirstCmp)  in optimizeNZCVDefs()
135       else if (&II == LastCmp)  in optimizeNZCVDefs()
141     if (NZCVDead && NZCVDeadAtCurrInstr && II.definesRegister(AArch64::NZCV)) {  in optimizeNZCVDefs()
143       unsigned NewOpc = getNonFlagSettingVariant(II.getOpcode());  in optimizeNZCVDefs()
144       int DeadNZCVIdx = II.findRegisterDefOperandIdx(AArch64::NZCV);  in optimizeNZCVDefs()
150                             << II);  in optimizeNZCVDefs()
151           II.setDesc(TII->get(NewOpc));  in optimizeNZCVDefs()
152           II.removeOperand(DeadNZCVIdx);  in optimizeNZCVDefs()
156           constrainOperandRegClass(MF, *TRI, MRI, *TII, *RBI, II, II.getDesc(),  in optimizeNZCVDefs()
157                                    II.getOperand(0), 0);  in optimizeNZCVDefs()
162           II.getOperand(DeadNZCVIdx).setIsDead();  in optimizeNZCVDefs()