Lines Matching refs:Def
201 MachineInstr *Def = Op->getParent();
205 if (DeadInstr.find(Def) != DeadInstr.end())
212 for (MachineOperand &MODef : Def->operands()) {
222 if (&Use == Def)
233 LLVM_DEBUG(dbgs() << "Deleting instruction " << *Def << "\n");
234 DeadInstr.insert(Def);
303 MachineInstr *Def = MRI->getVRegDef(OpReg);
304 if (!Def)
306 if (Def->isImplicitDef())
346 MachineInstr *Def = MRI->getVRegDef(MI->getOperand(1).getReg());
347 if (!Def)
349 return elideCopies(Def);
606 MachineInstr *Def = MRI->getVRegDef(*I);
607 if (!Def)
610 elideCopiesAndPHIs(Def, DefSrcs);