Lines Matching defs:CmpInstr

1041 static bool findRedundantFlagInstr(MachineInstr &CmpInstr,
1048         CmpInstr.getOpcode() == X86::TEST64rr) &&
1050         CmpInstr.getOpcode() == X86::TEST16rr))
1053   // CmpInstr is a TEST16rr/TEST64rr instruction, and
1056   assert((CmpInstr.getOperand(0).getReg() == CmpInstr.getOperand(1).getReg()) &&
1057          "CmpInstr is an analyzable TEST16rr/TEST64rr, and "
1062   // `CmpValDefInstr` defines the value that's used by `CmpInstr`; in this case
1063   // if `CmpValDefInstr` sets the EFLAGS, it is likely that `CmpInstr` is
1066       (MRI->getVRegDef(CmpInstr.getOperand(0).getReg()) == &CmpValDefInstr) &&
1070   if (CmpInstr.getOpcode() == X86::TEST16rr) {
1085   if (CmpInstr.getOpcode() == X86::TEST64rr) {
5203 bool X86InstrInfo::optimizeCompareInstr(MachineInstr &CmpInstr, Register SrcReg,
5208   switch (CmpInstr.getOpcode()) {
5223     if (!MRI->use_nodbg_empty(CmpInstr.getOperand(0).getReg()))
5230     switch (CmpInstr.getOpcode()) {
5247     CmpInstr.setDesc(get(NewOpcode));
5248     CmpInstr.removeOperand(0);
5250     CmpInstr.dropDebugNumber();
5279   // Search backward from CmpInstr for the next instruction defining EFLAGS.
5281   MachineBasicBlock &CmpMBB = *CmpInstr.getParent();
5283       std::next(MachineBasicBlock::reverse_iterator(CmpInstr));
5312             findRedundantFlagInstr(CmpInstr, Inst, MRI, &AndInstr, TRI,
5345         if (isRedundantFlagInstr(CmpInstr, SrcReg, SrcReg2, CmpMask, CmpValue,
5376   // Scan forward from the instruction after CmpInstr for uses of EFLAGS.
5377   // It is safe to remove CmpInstr if EFLAGS is redefined or killed.
5383       std::next(MachineBasicBlock::iterator(CmpInstr));
5389       // It is safe to remove CmpInstr if EFLAGS is updated again.
5510       // If it is safe to remove CmpInstr, the condition code of these
5515       // It is safe to remove CmpInstr if EFLAGS is updated again or killed.
5562   CmpInstr.eraseFromParent();