1423     MachineInstr &CmpInstr, Register SrcReg, Register SrcReg2, int64_t CmpMask,  in optimizeCompareInstr()  argument
1425   assert(CmpInstr.getParent());  in optimizeCompareInstr()
1429   int DeadNZCVIdx = CmpInstr.findRegisterDefOperandIdx(AArch64::NZCV, true);  in optimizeCompareInstr()
1431     if (CmpInstr.definesRegister(AArch64::WZR) ||  in optimizeCompareInstr()
1432         CmpInstr.definesRegister(AArch64::XZR)) {  in optimizeCompareInstr()
1433       CmpInstr.eraseFromParent();  in optimizeCompareInstr()
1436     unsigned Opc = CmpInstr.getOpcode();  in optimizeCompareInstr()
1437     unsigned NewOpc = convertToNonFlagSettingOpc(CmpInstr);  in optimizeCompareInstr()
1441     CmpInstr.setDesc(MCID);  in optimizeCompareInstr()
1442     CmpInstr.removeOperand(DeadNZCVIdx);  in optimizeCompareInstr()
1443     bool succeeded = UpdateOperandRegClass(CmpInstr);  in optimizeCompareInstr()
1449   if (CmpInstr.getOpcode() == AArch64::PTEST_PP)  in optimizeCompareInstr()
1450     return optimizePTestInstr(&CmpInstr, SrcReg, SrcReg2, MRI);  in optimizeCompareInstr()
1456   if (!MRI->use_nodbg_empty(CmpInstr.getOperand(0).getReg()))  in optimizeCompareInstr()
1459   if (CmpValue == 0 && substituteCmpToZero(CmpInstr, SrcReg, *MRI))  in optimizeCompareInstr()
1462          removeCmpToZeroOrOne(CmpInstr, SrcReg, CmpValue, *MRI);  in optimizeCompareInstr()
1614 llvm::examineCFlagsUse(MachineInstr &MI, MachineInstr &CmpInstr,  in examineCFlagsUse()  argument
1617   MachineBasicBlock *CmpParent = CmpInstr.getParent();  in examineCFlagsUse()
1626            std::next(CmpInstr.getIterator()), CmpParent->instr_end())) {  in examineCFlagsUse()
1660 static bool canInstrSubstituteCmpInstr(MachineInstr &MI, MachineInstr &CmpInstr,  in canInstrSubstituteCmpInstr()  argument
1664   const unsigned CmpOpcode = CmpInstr.getOpcode();  in canInstrSubstituteCmpInstr()
1668   Optional<UsedNZCV> NZVCUsed = examineCFlagsUse(MI, CmpInstr, TRI);  in canInstrSubstituteCmpInstr()
1675   return !areCFlagsAccessedBetweenInstrs(&MI, &CmpInstr, &TRI, AccessToCheck);  in canInstrSubstituteCmpInstr()
1683     MachineInstr &CmpInstr, unsigned SrcReg,  in substituteCmpToZero()  argument
1696   if (!canInstrSubstituteCmpInstr(*MI, CmpInstr, TRI))  in substituteCmpToZero()
1701   CmpInstr.eraseFromParent();  in substituteCmpToZero()
1713 static bool canCmpInstrBeRemoved(MachineInstr &MI, MachineInstr &CmpInstr,  in canCmpInstrBeRemoved()  argument
1742   const unsigned CmpOpcode = CmpInstr.getOpcode();  in canCmpInstrBeRemoved()
1755       examineCFlagsUse(MI, CmpInstr, TRI, &CCUseInstrs);  in canCmpInstrBeRemoved()
1769   if (areCFlagsAccessedBetweenInstrs(&MI, &CmpInstr, &TRI, AK_Write))  in canCmpInstrBeRemoved()
1808     MachineInstr &CmpInstr, unsigned SrcReg, int CmpValue,  in removeCmpToZeroOrOne()  argument
1816   if (!canCmpInstrBeRemoved(*MI, CmpInstr, CmpValue, TRI, CCUseInstrs,  in removeCmpToZeroOrOne()
1820   CmpInstr.eraseFromParent();  in removeCmpToZeroOrOne()