93   MachineInstr *findPairable(MachineInstr &I1, bool &DoInsertAtI1,
98   void combine(MachineInstr &I1, MachineInstr &I2,
102   bool isSafeToMoveTogether(MachineInstr &I1, MachineInstr &I2,
265 bool HexagonCopyToCombine::isSafeToMoveTogether(MachineInstr &I1,  in isSafeToMoveTogether()  argument
274   if (I2UseReg && I1.modifiesRegister(I2UseReg, TRI))  in isSafeToMoveTogether()
285     MachineBasicBlock::reverse_iterator End = I1.getIterator().getReverse();  in isSafeToMoveTogether()
288       End = ++I1.getIterator().getReverse();  in isSafeToMoveTogether()
333     MachineBasicBlock::iterator I(I1), End(I2);  in isSafeToMoveTogether()
337     Register I1UseReg = UseReg(I1.getOperand(1));  in isSafeToMoveTogether()
384       bool Added = I1.addRegisterKilled(KilledOperand, TRI);  in isSafeToMoveTogether()
495       MachineInstr &I1 = *MI++;  in runOnMachineFunction()  local
497       if (I1.isDebugInstr())  in runOnMachineFunction()
503       if (ShouldCombineAggressively && PotentiallyNewifiableTFR.count(&I1))  in runOnMachineFunction()
507       if (!isCombinableInstType(I1, TII, ShouldCombineAggressively))  in runOnMachineFunction()
515       MachineInstr *I2 = findPairable(I1, DoInsertAtI1, OptForSize);  in runOnMachineFunction()
518         combine(I1, *I2, MI, DoInsertAtI1, OptForSize);  in runOnMachineFunction()
530 MachineInstr *HexagonCopyToCombine::findPairable(MachineInstr &I1,  in findPairable()  argument
533   MachineBasicBlock::iterator I2 = std::next(MachineBasicBlock::iterator(I1));  in findPairable()
534   while (I2 != I1.getParent()->end() && I2->isDebugInstr())  in findPairable()
537   Register I1DestReg = I1.getOperand(0).getReg();  in findPairable()
539   for (MachineBasicBlock::iterator End = I1.getParent()->end(); I2 != End;  in findPairable()
566     if ((IsI2LowReg && !areCombinableOperations(TRI, I1, *I2, AllowC64)) ||  in findPairable()
567         (IsI1LowReg && !areCombinableOperations(TRI, *I2, I1, AllowC64)))  in findPairable()
570     if (isSafeToMoveTogether(I1, *I2, I1DestReg, I2DestReg, DoInsertAtI1))  in findPairable()
579 void HexagonCopyToCombine::combine(MachineInstr &I1, MachineInstr &I2,  in combine()  argument
588   Register I1DestReg = I1.getOperand(0).getReg();  in combine()
610   MachineOperand &LoOperand = IsI1Loreg ? I1.getOperand(1) : I2.getOperand(1);  in combine()
611   MachineOperand &HiOperand = IsI1Loreg ? I2.getOperand(1) : I1.getOperand(1);  in combine()
619                isGreaterThanNBitTFRI<16>(I1) && isGreaterThanNBitTFRI<16>(I2);  in combine()
621   MachineBasicBlock::iterator InsertPt(DoInsertAtI1 ? I1 : I2);  in combine()
648   I1.eraseFromParent();  in combine()