Cross Reference: /external/llvm/lib/Target/X86/X86InstrInfo.cpp

Lines Matching refs:CmpInstr
3158 optimizeCompareInstr(MachineInstr *CmpInstr, unsigned SrcReg, unsigned SrcReg2,
3163   switch (CmpInstr->getOpcode()) {
3180     if (!MRI->use_nodbg_empty(CmpInstr->getOperand(0).getReg()))
3183     switch (CmpInstr->getOpcode()) {
3201     CmpInstr->setDesc(get(NewOpcode));
3202     CmpInstr->RemoveOperand(0);
3214   // CmpInstr is the first instruction of the BB.
3215   MachineBasicBlock::iterator I = CmpInstr, Def = MI;
3218   // EFLAGS. If MI is not in the same BB as CmpInstr, do not optimize.
3220   if (IsCmpZero && (MI->getParent() != CmpInstr->getParent() ||
3224   // We are searching for an earlier instruction that can make CmpInstr
3229   // We iterate backward, starting from the instruction before CmpInstr and
3231   // RI points to the instruction before CmpInstr.
3236       RE = CmpInstr->getParent() == MI->getParent() ?
3238            CmpInstr->getParent()->rend();
3242     // Check whether CmpInstr can be made redundant by the current instruction.
3244         isRedundantFlagInstr(CmpInstr, SrcReg, SrcReg2, CmpValue, Instr)) {
3265       // We can't remove CmpInstr.
3277   // Scan forward from the instruction after CmpInstr for uses of EFLAGS.
3278   // It is safe to remove CmpInstr if EFLAGS is redefined or killed.
3283   MachineBasicBlock::iterator E = CmpInstr->getParent()->end();
3290       // It is safe to remove CmpInstr if EFLAGS is updated again.
3345       // If it is safe to remove CmpInstr, the condition code of these
3350       // It is safe to remove CmpInstr if EFLAGS is updated again or killed.
3359     MachineBasicBlock *MBB = CmpInstr->getParent();
3380   CmpInstr->eraseFromParent();