Lines Matching defs:Hi

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,
87   if (Hi.getOpcode() != RISCV::LUI && Hi.getOpcode() != RISCV::AUIPC &&
88       Hi.getOpcode() != RISCV::PseudoMovAddr)
91   const MachineOperand &HiOp1 = Hi.getOperand(1);
93       Hi.getOpcode() == RISCV::AUIPC ? RISCVII::MO_PCREL_HI : RISCVII::MO_HI;
101   if (Hi.getOpcode() == RISCV::PseudoMovAddr) {
103     // setting Lo and Hi both point to PseudoMovAddr
104     Lo = &Hi;
106     Register HiDestReg = Hi.getOperand(0).getReg();
116   if (Hi.getOpcode() == RISCV::LUI || Hi.getOpcode() == RISCV::PseudoMovAddr) {
122     assert(Hi.getOpcode() == RISCV::AUIPC);
142 // Update the offset in Hi and Lo instructions.
145 void RISCVMergeBaseOffsetOpt::foldOffset(MachineInstr &Hi, MachineInstr &Lo,
148   // Put the offset back in Hi and the Lo
149   Hi.getOperand(1).setOffset(Offset);
150   if (Hi.getOpcode() != RISCV::AUIPC)
158                     << "     " << Hi << "     " << Lo;);
162 // If the pattern is found, updates the offset in Hi and Lo instructions
166 //                       Hi:  lui   vreg1, %hi(s)
181 bool RISCVMergeBaseOffsetOpt::foldLargeOffset(MachineInstr &Hi,
208       foldOffset(Hi, Lo, TailAdd, OffLo);
229     foldOffset(Hi, Lo, TailAdd, Offset);
238     foldOffset(Hi, Lo, TailAdd, Offset);
249 // If the pattern is found, updates the offset in Hi and Lo instructions
252 // Hi:         lui     vreg1, %hi(s)
256 bool RISCVMergeBaseOffsetOpt::foldShiftedOffset(MachineInstr &Hi,
297   foldOffset(Hi, Lo, TailShXAdd, Offset);
302 bool RISCVMergeBaseOffsetOpt::detectAndFoldOffset(MachineInstr &Hi,
330         foldOffset(Hi, Lo, TailTail, Offset);
337     foldOffset(Hi, Lo, Tail, Offset);
349     return foldLargeOffset(Hi, Lo, Tail, DestReg);
356     return foldShiftedOffset(Hi, Lo, Tail, DestReg);
362 bool RISCVMergeBaseOffsetOpt::foldIntoMemoryOps(MachineInstr &Hi,
369   // Hi:   lui vreg1, %hi(foo)          --->  lui vreg1, %hi(foo+8)
374   // Hi: 1:auipc vreg1, %pcrel_hi(s)         ---> auipc vreg1, %pcrel_hi(foo+8)
478   int64_t NewOffset = Hi.getOperand(1).getOffset() + *CommonOffset;
486   Hi.getOperand(1).setOffset(NewOffset);
489   if (Hi.getOpcode() == RISCV::PseudoMovAddr) {
491     Hi.setDesc(TII->get(RISCV::LUI));
492     Hi.removeOperand(2);
495   if (Hi.getOpcode() != RISCV::AUIPC)
530   // Prevent Lo (originally PseudoMovAddr, which is also pointed by Hi) from
532   if (&Lo == &Hi)
535   MRI->replaceRegWith(Lo.getOperand(0).getReg(), Hi.getOperand(0).getReg());
550     for (MachineInstr &Hi : MBB) {
552       if (!detectFoldable(Hi, Lo))
554       MadeChange |= detectAndFoldOffset(Hi, *Lo);
555       MadeChange |= foldIntoMemoryOps(Hi, *Lo);