Esempi in C++ (Cpp) per LoopNode::unswitch_max

Esempio n. 1

File: loopUnswitch.cpp Progetto: GregBowyer/ManagedRuntimeInitiative

//------------------------------policy_unswitching-----------------------------
// Return TRUE or FALSE if the loop should be unswitched
// (ie. clone loop with an invariant test that does not exit the loop)
bool IdealLoopTree::policy_unswitching( PhaseIdealLoop *phase ) const {
  if( !LoopUnswitching ) {
    return false;
  }
  uint nodes_left = MaxNodeLimit - phase->C->unique();
  if (2 * _body.size() > nodes_left) {
    return false; // Too speculative if running low on nodes.
  }
  LoopNode* head = _head->as_Loop();
  if (head->unswitch_count() + 1 > head->unswitch_max()) {
    return false;
  }
  return phase->find_unswitching_candidate(this) != NULL;
}

Esempio n. 2

File: loopUnswitch.cpp Progetto: gaoxiaojun/dync

//------------------------------policy_unswitching-----------------------------
// Return TRUE or FALSE if the loop should be unswitched
// (ie. clone loop with an invariant test that does not exit the loop)
bool IdealLoopTree::policy_unswitching( PhaseIdealLoop *phase ) const {
  if( !LoopUnswitching ) {
    return false;
  }
  if (!_head->is_Loop()) {
    return false;
  }

  // check for vectorized loops, any unswitching was already applied
  if (_head->is_CountedLoop() && _head->as_CountedLoop()->do_unroll_only()) {
    return false;
  }

  int nodes_left = phase->C->max_node_limit() - phase->C->live_nodes();
  if ((int)(2 * _body.size()) > nodes_left) {
    return false; // Too speculative if running low on nodes.
  }
  LoopNode* head = _head->as_Loop();
  if (head->unswitch_count() + 1 > head->unswitch_max()) {
    return false;
  }
  return phase->find_unswitching_candidate(this) != NULL;
}