1181     MachineInstr &CmpInstr, unsigned SrcReg, unsigned SrcReg2, int CmpMask,  in optimizeCompareInstr()  argument
1183   assert(CmpInstr.getParent());  in optimizeCompareInstr()
1187   int DeadNZCVIdx = CmpInstr.findRegisterDefOperandIdx(AArch64::NZCV, true);  in optimizeCompareInstr()
1189     if (CmpInstr.definesRegister(AArch64::WZR) ||  in optimizeCompareInstr()
1190         CmpInstr.definesRegister(AArch64::XZR)) {  in optimizeCompareInstr()
1191       CmpInstr.eraseFromParent();  in optimizeCompareInstr()
1194     unsigned Opc = CmpInstr.getOpcode();  in optimizeCompareInstr()
1195     unsigned NewOpc = convertToNonFlagSettingOpc(CmpInstr);  in optimizeCompareInstr()
1199     CmpInstr.setDesc(MCID);  in optimizeCompareInstr()
1200     CmpInstr.RemoveOperand(DeadNZCVIdx);  in optimizeCompareInstr()
1201     bool succeeded = UpdateOperandRegClass(CmpInstr);  in optimizeCompareInstr()
1215   if (!MRI->use_nodbg_empty(CmpInstr.getOperand(0).getReg()))  in optimizeCompareInstr()
1218   return substituteCmpToZero(CmpInstr, SrcReg, MRI);  in optimizeCompareInstr()
1394 static bool canInstrSubstituteCmpInstr(MachineInstr *MI, MachineInstr *CmpInstr,  in canInstrSubstituteCmpInstr()  argument
1398   assert(CmpInstr);  in canInstrSubstituteCmpInstr()
1400   const unsigned CmpOpcode = CmpInstr->getOpcode();  in canInstrSubstituteCmpInstr()
1404   if (MI->getParent() != CmpInstr->getParent())  in canInstrSubstituteCmpInstr()
1407   if (areCFlagsAliveInSuccessors(CmpInstr->getParent()))  in canInstrSubstituteCmpInstr()
1413   if (areCFlagsAccessedBetweenInstrs(MI, CmpInstr, TRI, AccessToCheck))  in canInstrSubstituteCmpInstr()
1417   for (auto I = std::next(CmpInstr->getIterator()),  in canInstrSubstituteCmpInstr()
1418             E = CmpInstr->getParent()->instr_end();  in canInstrSubstituteCmpInstr()
1440     MachineInstr &CmpInstr, unsigned SrcReg,  in substituteCmpToZero()  argument
1454   if (!canInstrSubstituteCmpInstr(MI, &CmpInstr, TRI))  in substituteCmpToZero()
1459   CmpInstr.eraseFromParent();  in substituteCmpToZero()