Exemplos de MachineBasicBlock::instr_rend em C++ (Cpp)

Exemplo n.º 1

Arquivo: LanaiDelaySlotFiller.cpp Projeto: bharadwajy/checkedc-llvm

bool Filler::findDelayInstr(MachineBasicBlock &MBB,
                            MachineBasicBlock::instr_iterator Slot,
                            MachineBasicBlock::instr_iterator &Filler) {
  SmallSet<unsigned, 32> RegDefs;
  SmallSet<unsigned, 32> RegUses;

  insertDefsUses(Slot, RegDefs, RegUses);

  bool SawLoad = false;
  bool SawStore = false;

  for (MachineBasicBlock::reverse_instr_iterator I = ++Slot.getReverse();
       I != MBB.instr_rend(); ++I) {
    // skip debug value
    if (I->isDebugValue())
      continue;

    // Convert to forward iterator.
    MachineBasicBlock::instr_iterator FI = I.getReverse();

    if (I->hasUnmodeledSideEffects() || I->isInlineAsm() || I->isLabel() ||
        FI == LastFiller || I->isPseudo())
      break;

    if (delayHasHazard(FI, SawLoad, SawStore, RegDefs, RegUses)) {
      insertDefsUses(FI, RegDefs, RegUses);
      continue;
    }
    Filler = FI;
    return true;
  }
  return false;
}

Exemplo n.º 2

Arquivo: CoffeeCLDelaySlotFiller.cpp Projeto: guoqingzhang/llvm-coffee

bool Filler::findDelayInstr(MachineBasicBlock &MBB,
                            InstrIter slot,
                            InstrIter &Filler) {
  SmallSet<unsigned, 32> RegDefs;
  SmallSet<unsigned, 32> RegUses;

  insertDefsUses(slot, RegDefs, RegUses);

  bool sawLoad = false;
  bool sawStore = false;

  for (ReverseInstrIter I(slot); I != MBB.instr_rend(); ++I) {
    // skip debug value
    if (I->isDebugValue())
      continue;


    // Convert to forward iterator.
    InstrIter FI(llvm::next(I).base());

    if (I->hasUnmodeledSideEffects()
        || I->isInlineAsm()
        || I->isLabel()
        || FI == LastFiller
        || I->isPseudo()
        //
        // Should not allow:
        // ERET, DERET or WAIT, PAUSE. Need to add these to instruction
        // list. TBD.
        )
      break;

    if (delayHasHazard(FI, sawLoad, sawStore, RegDefs, RegUses)) {
      insertDefsUses(FI, RegDefs, RegUses);
      continue;
    }

    Filler = FI;
    return true;
  }

  return false;
}