Lines Matching defs:Last

263   int calcInstrDist(const MachineInstr &First, const MachineInstr &Last);
279   /// Returns true if the \p Last LEA instruction can be replaced by the
282   /// replacement of the \p Last LEA's uses with the \p First's def register.
283   bool isReplaceable(const MachineInstr &First, const MachineInstr &Last,
319                                       const MachineInstr &Last) {
322   assert(Last.getParent() == First.getParent() &&
324   assert(InstrPos.contains(&First) && InstrPos.contains(&Last) &&
327   return InstrPos[&Last] - InstrPos[&First];
416 // Check that the Last LEA can be replaced by the First LEA. To be so,
420 // 3) All uses of the Last LEA def register are replaceable, thus the
423                                        const MachineInstr &Last,
425   assert(isLEA(First) && isLEA(Last) &&
433       MRI->getRegClass(Last.getOperand(0).getReg()))
437   AddrDispShift = getAddrDispShift(Last, 1, First, 1);
439   // Loop over all uses of the Last LEA to check that its def register is
442   for (auto &MO : MRI->use_nodbg_operands(Last.getOperand(0).getReg())) {
635         MachineInstr &Last = **I2;
640         assert(calcInstrDist(First, Last) > 0 &&
643         // Check that the Last LEA instruction can be replaced by the First.
644         if (!isReplaceable(First, Last, AddrDispShift)) {
649         // Loop over all uses of the Last LEA and update their operands. Note
653         Register LastVReg = Last.getOperand(0).getReg();
692                    Last.dump(););
694         // By this moment, all of the Last LEA's uses must be replaced. So we
698         Last.eraseFromParent();