883     MachineInstr &CmpInstr, unsigned SrcReg, unsigned SrcReg2, int CmpMask,  in optimizeCompareInstr()  argument
885   assert(CmpInstr.getParent());  in optimizeCompareInstr()
889   int DeadNZCVIdx = CmpInstr.findRegisterDefOperandIdx(AArch64::NZCV, true);  in optimizeCompareInstr()
891     if (CmpInstr.definesRegister(AArch64::WZR) ||  in optimizeCompareInstr()
892         CmpInstr.definesRegister(AArch64::XZR)) {  in optimizeCompareInstr()
893       CmpInstr.eraseFromParent();  in optimizeCompareInstr()
896     unsigned Opc = CmpInstr.getOpcode();  in optimizeCompareInstr()
897     unsigned NewOpc = convertFlagSettingOpcode(CmpInstr);  in optimizeCompareInstr()
901     CmpInstr.setDesc(MCID);  in optimizeCompareInstr()
902     CmpInstr.RemoveOperand(DeadNZCVIdx);  in optimizeCompareInstr()
903     bool succeeded = UpdateOperandRegClass(CmpInstr);  in optimizeCompareInstr()
917   if (!MRI->use_nodbg_empty(CmpInstr.getOperand(0).getReg()))  in optimizeCompareInstr()
920   return substituteCmpToZero(CmpInstr, SrcReg, MRI);  in optimizeCompareInstr()
1074 static bool canInstrSubstituteCmpInstr(MachineInstr *MI, MachineInstr *CmpInstr,  in canInstrSubstituteCmpInstr()  argument
1078   assert(CmpInstr);  in canInstrSubstituteCmpInstr()
1080   const unsigned CmpOpcode = CmpInstr->getOpcode();  in canInstrSubstituteCmpInstr()
1084   if (MI->getParent() != CmpInstr->getParent())  in canInstrSubstituteCmpInstr()
1087   if (areCFlagsAliveInSuccessors(CmpInstr->getParent()))  in canInstrSubstituteCmpInstr()
1093   if (areCFlagsAccessedBetweenInstrs(MI, CmpInstr, TRI, AccessToCheck))  in canInstrSubstituteCmpInstr()
1097   for (auto I = std::next(CmpInstr->getIterator()), E = CmpInstr->getParent()->instr_end();  in canInstrSubstituteCmpInstr()
1119     MachineInstr &CmpInstr, unsigned SrcReg,  in substituteCmpToZero()  argument
1133   if (!canInstrSubstituteCmpInstr(MI, &CmpInstr, TRI))  in substituteCmpToZero()
1138   CmpInstr.eraseFromParent();  in substituteCmpToZero()