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);
85 bool RISCVMergeBaseOffsetOpt::detectFoldable(MachineInstr &Hi,  in INITIALIZE_PASS()
87   if (Hi.getOpcode() != RISCV::LUI && Hi.getOpcode() != RISCV::AUIPC)  in INITIALIZE_PASS()
90   const MachineOperand &HiOp1 = Hi.getOperand(1);  in INITIALIZE_PASS()
92       Hi.getOpcode() == RISCV::AUIPC ? RISCVII::MO_PCREL_HI : RISCVII::MO_HI;  in INITIALIZE_PASS()
100   Register HiDestReg = Hi.getOperand(0).getReg();  in INITIALIZE_PASS()
109   if (Hi.getOpcode() == RISCV::LUI) {  in INITIALIZE_PASS()
115     assert(Hi.getOpcode() == RISCV::AUIPC);  in INITIALIZE_PASS()
138 void RISCVMergeBaseOffsetOpt::foldOffset(MachineInstr &Hi, MachineInstr &Lo,  in foldOffset()  argument
142   Hi.getOperand(1).setOffset(Offset);  in foldOffset()
143   if (Hi.getOpcode() != RISCV::AUIPC)  in foldOffset()
151                     << "     " << Hi << "     " << Lo;);  in foldOffset()
174 bool RISCVMergeBaseOffsetOpt::foldLargeOffset(MachineInstr &Hi,  in foldLargeOffset()  argument
201       foldOffset(Hi, Lo, TailAdd, OffLo);  in foldLargeOffset()
222     foldOffset(Hi, Lo, TailAdd, Offset);  in foldLargeOffset()
231     foldOffset(Hi, Lo, TailAdd, Offset);  in foldLargeOffset()
249 bool RISCVMergeBaseOffsetOpt::foldShiftedOffset(MachineInstr &Hi,  in foldShiftedOffset()  argument
290   foldOffset(Hi, Lo, TailShXAdd, Offset);  in foldShiftedOffset()
295 bool RISCVMergeBaseOffsetOpt::detectAndFoldOffset(MachineInstr &Hi,  in detectAndFoldOffset()  argument
323         foldOffset(Hi, Lo, TailTail, Offset);  in detectAndFoldOffset()
330     foldOffset(Hi, Lo, Tail, Offset);  in detectAndFoldOffset()
342     return foldLargeOffset(Hi, Lo, Tail, DestReg);  in detectAndFoldOffset()
349     return foldShiftedOffset(Hi, Lo, Tail, DestReg);  in detectAndFoldOffset()
355 bool RISCVMergeBaseOffsetOpt::foldIntoMemoryOps(MachineInstr &Hi,  in foldIntoMemoryOps()  argument
459   int64_t NewOffset = Hi.getOperand(1).getOffset() + *CommonOffset;  in foldIntoMemoryOps()
467   Hi.getOperand(1).setOffset(NewOffset);  in foldIntoMemoryOps()
469   if (Hi.getOpcode() != RISCV::AUIPC)  in foldIntoMemoryOps()
504   MRI->replaceRegWith(Lo.getOperand(0).getReg(), Hi.getOperand(0).getReg());  in foldIntoMemoryOps()
519     for (MachineInstr &Hi : MBB) {  in runOnMachineFunction()
521       if (!detectFoldable(Hi, Lo))  in runOnMachineFunction()
523       MadeChange |= detectAndFoldOffset(Hi, *Lo);  in runOnMachineFunction()
524       MadeChange |= foldIntoMemoryOps(Hi, *Lo);  in runOnMachineFunction()