Esempi in C++ (Cpp) per CountedLoopNode::is_main_loop

Esempio n. 1

File: loopUnswitch.cpp Progetto: campolake/openjdk9

bool CountedLoopReserveKit::create_reserve() {
  if (!_active) {
    return false;
  }

  if(!_lpt->_head->is_CountedLoop()) {
    if (TraceLoopOpts) {
      tty->print_cr("CountedLoopReserveKit::create_reserve: %d not counted loop", _lpt->_head->_idx);
    }
    return false;
  }
  CountedLoopNode *cl = _lpt->_head->as_CountedLoop();
  if (!cl->is_valid_counted_loop()) {
    if (TraceLoopOpts) {
      tty->print_cr("CountedLoopReserveKit::create_reserve: %d not valid counted loop", cl->_idx);
    }
    return false; // skip malformed counted loop
  }
  if (!cl->is_main_loop()) {
    bool loop_not_canonical = true;
    if (cl->is_post_loop() && (cl->slp_max_unroll() > 0)) {
      loop_not_canonical = false;
    }
    // only reject some loop forms
    if (loop_not_canonical) {
      if (TraceLoopOpts) {
        tty->print_cr("CountedLoopReserveKit::create_reserve: %d not canonical loop", cl->_idx);
      }
      return false; // skip normal, pre, and post (conditionally) loops
    }
  }

  _lp = _lpt->_head->as_Loop();
  _lp_reserved = _phase->create_reserve_version_of_loop(_lpt, this);

  if (!_lp_reserved->is_CountedLoop()) {
    return false;
  }

  Node* ifslow_pred = _lp_reserved->as_CountedLoop()->in(LoopNode::EntryControl);

  if (!ifslow_pred->is_IfFalse()) {
    return false;
  }

  Node* iff = ifslow_pred->in(0);
  if (!iff->is_If() || iff != _iff) {
    return false;
  }

  if (iff->in(1)->Opcode() != Op_ConI) {
    return false;
  }

  return _has_reserved = true;
}

Esempio n. 2

File: loopUnswitch.cpp Progetto: gaoxiaojun/dync

bool CountedLoopReserveKit::create_reserve() {
  if (!_active) {
    return false;
  }

  if(!_lpt->_head->is_CountedLoop()) {
    if (TraceLoopOpts) {
      tty->print_cr("CountedLoopReserveKit::create_reserve: %d not counted loop", _lpt->_head->_idx);
    }
    return false;
  }
  CountedLoopNode *cl = _lpt->_head->as_CountedLoop();
  if (!cl->is_valid_counted_loop()) {
    if (TraceLoopOpts) {
      tty->print_cr("CountedLoopReserveKit::create_reserve: %d not valid counted loop", cl->_idx);
    }
    return false; // skip malformed counted loop
  }
  if (!cl->is_main_loop()) {
    if (TraceLoopOpts) {
      tty->print_cr("CountedLoopReserveKit::create_reserve: %d not main loop", cl->_idx);
    }
    return false; // skip normal, pre, and post loops
  }

  _lp = _lpt->_head->as_Loop();
  _lp_reserved = _phase->create_reserve_version_of_loop(_lpt, this);

  if (!_lp_reserved->is_CountedLoop()) {
    return false;
  }

  Node* ifslow_pred = _lp_reserved->as_CountedLoop()->in(LoopNode::EntryControl);

  if (!ifslow_pred->is_IfFalse()) {
    return false;
  }

  Node* iff = ifslow_pred->in(0);
  if (!iff->is_If() || iff != _iff) {
    return false;
  }

  if (iff->in(1)->Opcode() != Op_ConI) {
    return false;
  }

  return _has_reserved = true;
}