87   void combine(MachineInstr *I1, MachineInstr *I2,
90   bool isSafeToMoveTogether(MachineInstr *I1, MachineInstr *I2,
222                                                 MachineInstr *I2,  in isSafeToMoveTogether()  argument
226   unsigned I2UseReg = UseReg(I2->getOperand(1));  in isSafeToMoveTogether()
240     MachineBasicBlock::reverse_iterator I(I2),  in isSafeToMoveTogether()
249     if (I2->killsRegister(I2UseReg))  in isSafeToMoveTogether()
276         removeKillInfo(I2, KilledOperand);  in isSafeToMoveTogether()
286     MachineBasicBlock::iterator I(I1), End(I2);  in isSafeToMoveTogether()
289       End = std::next(MachineBasicBlock::iterator(I2));  in isSafeToMoveTogether()
435       MachineInstr *I2 = findPairable(I1, DoInsertAtI1);  in runOnMachineFunction()  local
436       if (I2) {  in runOnMachineFunction()
438         combine(I1, I2, MI, DoInsertAtI1);  in runOnMachineFunction()
452   MachineBasicBlock::iterator I2 = std::next(MachineBasicBlock::iterator(I1));  in findPairable()  local
455   for (MachineBasicBlock::iterator End = I1->getParent()->end(); I2 != End;  in findPairable()
456        ++I2) {  in findPairable()
458     if (I2->modifiesRegister(I1DestReg, TRI))  in findPairable()
462     if (!isCombinableInstType(I2, TII, ShouldCombineAggressively))  in findPairable()
466     if (ShouldCombineAggressively && PotentiallyNewifiableTFR.count(I2))  in findPairable()
469     unsigned I2DestReg = I2->getOperand(0).getReg();  in findPairable()
483     if ((IsI2LowReg && !areCombinableOperations(TRI, I1, I2)) ||  in findPairable()
484         (IsI1LowReg && !areCombinableOperations(TRI, I2, I1)))  in findPairable()
487     if (isSafeToMoveTogether(I1, I2, I1DestReg, I2DestReg,  in findPairable()
489       return I2;  in findPairable()
497 void HexagonCopyToCombine::combine(MachineInstr *I1, MachineInstr *I2,  in combine()  argument
502   if ((MachineInstr *)MI == I2) ++MI;  in combine()
506   unsigned I2DestReg = I2->getOperand(0).getReg();  in combine()
519     I2->getOperand(1);  in combine()
520   MachineOperand &HiOperand = IsI1Loreg ? I2->getOperand(1) :  in combine()
527   MachineBasicBlock::iterator InsertPt(DoInsertAtI1 ? I1 : I2);  in combine()
539   I2->eraseFromParent();  in combine()