102   MachineInstr *DefInstr = nullptr;  in getOperandDef()  local
105     DefInstr = MRI->getUniqueVRegDef(MO.getReg());  in getOperandDef()
107   if (DefInstr && DefInstr->isPHI())  in getOperandDef()
108     DefInstr = nullptr;  in getOperandDef()
109   return DefInstr;  in getOperandDef()
148         MachineInstr *DefInstr = InsInstrs[II->second];  in getDepth()  local
149         assert(DefInstr &&  in getDepth()
153             DefInstr, DefInstr->findRegisterDefOperandIdx(MO.getReg()),  in getDepth()
156         MachineInstr *DefInstr = getOperandDef(MO);  in getDepth()  local
157         if (DefInstr) {  in getDepth()
158           DepthOp = BlockTrace.getInstrCycles(DefInstr).Depth;  in getDepth()
160               DefInstr, DefInstr->findRegisterDefOperandIdx(MO.getReg()),  in getDepth()