C++ (Cpp) InstrEmitter示例

示例#1

文件： ScheduleDAGSDNodes.cpp 项目： cavedweller/llvm

/// ProcessSDDbgValues - Process SDDbgValues associated with this node.
static void ProcessSDDbgValues(SDNode *N, SelectionDAG *DAG,
                               InstrEmitter &Emitter,
                    SmallVector<std::pair<unsigned, MachineInstr*>, 32> &Orders,
                            DenseMap<SDValue, unsigned> &VRBaseMap,
                            unsigned Order) {
  if (!N->getHasDebugValue())
    return;

  // Opportunistically insert immediate dbg_value uses, i.e. those with source
  // order number right after the N.
  MachineBasicBlock *BB = Emitter.getBlock();
  MachineBasicBlock::iterator InsertPos = Emitter.getInsertPos();
  ArrayRef<SDDbgValue*> DVs = DAG->GetDbgValues(N);
  for (unsigned i = 0, e = DVs.size(); i != e; ++i) {
    if (DVs[i]->isInvalidated())
      continue;
    unsigned DVOrder = DVs[i]->getOrder();
    if (!Order || DVOrder == ++Order) {
      MachineInstr *DbgMI = Emitter.EmitDbgValue(DVs[i], VRBaseMap);
      if (DbgMI) {
        Orders.push_back(std::make_pair(DVOrder, DbgMI));
        BB->insert(InsertPos, DbgMI);
      }
      DVs[i]->setIsInvalidated();
    }
  }
}

示例#2

文件： ScheduleDAGSDNodes.cpp 项目： 0x00evil/llvm

// ProcessSourceNode - Process nodes with source order numbers. These are added
// to a vector which EmitSchedule uses to determine how to insert dbg_value
// instructions in the right order.
static void
ProcessSourceNode(SDNode *N, SelectionDAG *DAG, InstrEmitter &Emitter,
                  DenseMap<SDValue, unsigned> &VRBaseMap,
                  SmallVectorImpl<std::pair<unsigned, MachineInstr*> > &Orders,
                  SmallSet<unsigned, 8> &Seen) {
  unsigned Order = N->getIROrder();
  if (!Order || !Seen.insert(Order).second) {
    // Process any valid SDDbgValues even if node does not have any order
    // assigned.
    ProcessSDDbgValues(N, DAG, Emitter, Orders, VRBaseMap, 0);
    return;
  }

  MachineBasicBlock *BB = Emitter.getBlock();
  if (Emitter.getInsertPos() == BB->begin() || BB->back().isPHI() ||
      // Fast-isel may have inserted some instructions, in which case the
      // BB->back().isPHI() test will not fire when we want it to.
      std::prev(Emitter.getInsertPos())->isPHI()) {
    // Did not insert any instruction.
    Orders.push_back(std::make_pair(Order, (MachineInstr*)nullptr));
    return;
  }

  Orders.push_back(std::make_pair(Order, std::prev(Emitter.getInsertPos())));
  ProcessSDDbgValues(N, DAG, Emitter, Orders, VRBaseMap, Order);
}

示例#3

文件： ScheduleDAGSDNodes.cpp 项目： cavedweller/llvm

// ProcessSourceNode - Process nodes with source order numbers. These are added
// to a vector which EmitSchedule uses to determine how to insert dbg_value
// instructions in the right order.
static void ProcessSourceNode(SDNode *N, SelectionDAG *DAG,
                           InstrEmitter &Emitter,
                           DenseMap<SDValue, unsigned> &VRBaseMap,
                    SmallVector<std::pair<unsigned, MachineInstr*>, 32> &Orders,
                           SmallSet<unsigned, 8> &Seen) {
  unsigned Order = DAG->GetOrdering(N);
  if (!Order || !Seen.insert(Order)) {
    // Process any valid SDDbgValues even if node does not have any order
    // assigned.
    ProcessSDDbgValues(N, DAG, Emitter, Orders, VRBaseMap, 0);
    return;
  }

  MachineBasicBlock *BB = Emitter.getBlock();
  if (Emitter.getInsertPos() == BB->begin() || BB->back().isPHI()) {
    // Did not insert any instruction.
    Orders.push_back(std::make_pair(Order, (MachineInstr*)0));
    return;
  }

  Orders.push_back(std::make_pair(Order, prior(Emitter.getInsertPos())));
  ProcessSDDbgValues(N, DAG, Emitter, Orders, VRBaseMap, Order);
}

示例#4

文件： ScheduleDAGSDNodes.cpp 项目： wodeaei/VC-Project

// ProcessSourceNode - Process nodes with source order numbers. These are added
// to a vector which EmitSchedule uses to determine how to insert dbg_value
// instructions in the right order.
static void ProcessSourceNode(SDNode *N, SelectionDAG *DAG,
                           InstrEmitter &Emitter,
                           DenseMap<SDValue, unsigned> &VRBaseMap,
                    SmallVector<std::pair<unsigned, MachineInstr*>, 32> &Orders,
                           SmallSet<unsigned, 8> &Seen) {
  unsigned Order = DAG->GetOrdering(N);
  if (!Order || !Seen.insert(Order))
    return;

  MachineBasicBlock *BB = Emitter.getBlock();
  if (Emitter.getInsertPos() == BB->begin() || BB->back().isPHI()) {
    // Did not insert any instruction.
    Orders.push_back(std::make_pair(Order, (MachineInstr*)0));
    return;
  }

  Orders.push_back(std::make_pair(Order, prior(Emitter.getInsertPos())));
  if (!N->getHasDebugValue())
    return;
  // Opportunistically insert immediate dbg_value uses, i.e. those with source
  // order number right after the N.
  MachineBasicBlock::iterator InsertPos = Emitter.getInsertPos();
  SmallVector<SDDbgValue*,2> &DVs = DAG->GetDbgValues(N);
  for (unsigned i = 0, e = DVs.size(); i != e; ++i) {
    if (DVs[i]->isInvalidated())
      continue;
    unsigned DVOrder = DVs[i]->getOrder();
    if (DVOrder == ++Order) {
      MachineInstr *DbgMI = Emitter.EmitDbgValue(DVs[i], VRBaseMap);
      if (DbgMI) {
        Orders.push_back(std::make_pair(DVOrder, DbgMI));
        BB->insert(InsertPos, DbgMI);
      }
      DVs[i]->setIsInvalidated();
    }
  }
}

示例#5

文件： ScheduleDAGSDNodes.cpp 项目： happz/llvm

/// ProcessSDDbgValues - Process SDDbgValues associated with this node.
static void
ProcessSDDbgValues(SDNode *N, SelectionDAG *DAG, InstrEmitter &Emitter,
                   SmallVectorImpl<std::pair<unsigned, MachineInstr*> > &Orders,
                   DenseMap<SDValue, unsigned> &VRBaseMap, unsigned Order) {
  if (!N->getHasDebugValue())
    return;

  // Opportunistically insert immediate dbg_value uses, i.e. those with the same
  // source order number as N.
  MachineBasicBlock *BB = Emitter.getBlock();
  MachineBasicBlock::iterator InsertPos = Emitter.getInsertPos();
  for (auto DV : DAG->GetDbgValues(N)) {
    if (DV->isEmitted())
      continue;
    unsigned DVOrder = DV->getOrder();
    if (!Order || DVOrder == Order) {
      MachineInstr *DbgMI = Emitter.EmitDbgValue(DV, VRBaseMap);
      if (DbgMI) {
        Orders.push_back({DVOrder, DbgMI});
        BB->insert(InsertPos, DbgMI);
      }
    }
  }
}