35   bool detectFoldable(MachineInstr &Hi, MachineInstr *&Lo);
37   bool detectAndFoldOffset(MachineInstr &Hi, MachineInstr &Lo);
38   void foldOffset(MachineInstr &Hi, MachineInstr &Lo, MachineInstr &Tail,
40   bool foldLargeOffset(MachineInstr &Hi, MachineInstr &Lo,
42   bool foldShiftedOffset(MachineInstr &Hi, MachineInstr &Lo,
45   bool foldIntoMemoryOps(MachineInstr &Hi, MachineInstr &Lo);
86                                              MachineInstr *&Lo) {  in INITIALIZE_PASS()
104     Lo = &Hi;  in INITIALIZE_PASS()
110     Lo = &*MRI->use_instr_begin(HiDestReg);  in INITIALIZE_PASS()
111     if (Lo->getOpcode() != RISCV::ADDI)  in INITIALIZE_PASS()
115   const MachineOperand &LoOp2 = Lo->getOperand(2);  in INITIALIZE_PASS()
145 void RISCVMergeBaseOffsetOpt::foldOffset(MachineInstr &Hi, MachineInstr &Lo,  in foldOffset()  argument
151     Lo.getOperand(2).setOffset(Offset);  in foldOffset()
153   MRI->constrainRegClass(Lo.getOperand(0).getReg(),  in foldOffset()
155   MRI->replaceRegWith(Tail.getOperand(0).getReg(), Lo.getOperand(0).getReg());  in foldOffset()
158                     << "     " << Hi << "     " << Lo;);  in foldOffset()
182                                               MachineInstr &Lo,  in foldLargeOffset()  argument
208       foldOffset(Hi, Lo, TailAdd, OffLo);  in foldLargeOffset()
229     foldOffset(Hi, Lo, TailAdd, Offset);  in foldLargeOffset()
238     foldOffset(Hi, Lo, TailAdd, Offset);  in foldLargeOffset()
257                                                 MachineInstr &Lo,  in foldShiftedOffset()  argument
297   foldOffset(Hi, Lo, TailShXAdd, Offset);  in foldShiftedOffset()
303                                                   MachineInstr &Lo) {  in detectAndFoldOffset()  argument
304   Register DestReg = Lo.getOperand(0).getReg();  in detectAndFoldOffset()
330         foldOffset(Hi, Lo, TailTail, Offset);  in detectAndFoldOffset()
337     foldOffset(Hi, Lo, Tail, Offset);  in detectAndFoldOffset()
349     return foldLargeOffset(Hi, Lo, Tail, DestReg);  in detectAndFoldOffset()
356     return foldShiftedOffset(Hi, Lo, Tail, DestReg);  in detectAndFoldOffset()
363                                                 MachineInstr &Lo) {  in foldIntoMemoryOps()  argument
364   Register DestReg = Lo.getOperand(0).getReg();  in foldIntoMemoryOps()
483   MachineOperand &ImmOp = Lo.getOperand(2);  in foldIntoMemoryOps()
528   if (&Lo == &Hi)  in foldIntoMemoryOps()
531   MRI->replaceRegWith(Lo.getOperand(0).getReg(), Hi.getOperand(0).getReg());  in foldIntoMemoryOps()
532   Lo.eraseFromParent();  in foldIntoMemoryOps()
547       MachineInstr *Lo = nullptr;  in runOnMachineFunction()  local
548       if (!detectFoldable(Hi, Lo))  in runOnMachineFunction()
550       MadeChange |= detectAndFoldOffset(Hi, *Lo);  in runOnMachineFunction()
551       MadeChange |= foldIntoMemoryOps(Hi, *Lo);  in runOnMachineFunction()