887   _AliasLevel = aliaslevel;
 888   const int grow_ats = 16;
 889   _max_alias_types = grow_ats;
 890   _alias_types   = NEW_ARENA_ARRAY(comp_arena(), AliasType*, grow_ats);
 891   AliasType* ats = NEW_ARENA_ARRAY(comp_arena(), AliasType,  grow_ats);
 892   Copy::zero_to_bytes(ats, sizeof(AliasType)*grow_ats);
 893   {
 894     for (int i = 0; i < grow_ats; i++)  _alias_types[i] = &ats[i];
 895   }
 896   // Initialize the first few types.
 897   _alias_types[AliasIdxTop]->Init(AliasIdxTop, NULL);
 898   _alias_types[AliasIdxBot]->Init(AliasIdxBot, TypePtr::BOTTOM);
 899   _alias_types[AliasIdxRaw]->Init(AliasIdxRaw, TypeRawPtr::BOTTOM);
 900   _num_alias_types = AliasIdxRaw+1;
 901   // Zero out the alias type cache.
 902   Copy::zero_to_bytes(_alias_cache, sizeof(_alias_cache));
 903   // A NULL adr_type hits in the cache right away.  Preload the right answer.
 904   probe_alias_cache(NULL)->_index = AliasIdxTop;
 905 
 906   _intrinsics = NULL;
 907   _macro_nodes = new GrowableArray<Node*>(comp_arena(), 8,  0, NULL);
 908   _predicate_opaqs = new GrowableArray<Node*>(comp_arena(), 8,  0, NULL);
 909   register_library_intrinsics();
 910 }
 911 
 912 //---------------------------init_start----------------------------------------
 913 // Install the StartNode on this compile object.
 914 void Compile::init_start(StartNode* s) {
 915   if (failing())
 916     return; // already failing
 917   assert(s == start(), "");
 918 }
 919 
 920 StartNode* Compile::start() const {
 921   assert(!failing(), "");
 922   for (DUIterator_Fast imax, i = root()->fast_outs(imax); i < imax; i++) {
 923     Node* start = root()->fast_out(i);
 924     if( start->is_Start() )
 925       return start->as_Start();
 926   }
 927   ShouldNotReachHere();
 928   return NULL;

 887   _AliasLevel = aliaslevel;
 888   const int grow_ats = 16;
 889   _max_alias_types = grow_ats;
 890   _alias_types   = NEW_ARENA_ARRAY(comp_arena(), AliasType*, grow_ats);
 891   AliasType* ats = NEW_ARENA_ARRAY(comp_arena(), AliasType,  grow_ats);
 892   Copy::zero_to_bytes(ats, sizeof(AliasType)*grow_ats);
 893   {
 894     for (int i = 0; i < grow_ats; i++)  _alias_types[i] = &ats[i];
 895   }
 896   // Initialize the first few types.
 897   _alias_types[AliasIdxTop]->Init(AliasIdxTop, NULL);
 898   _alias_types[AliasIdxBot]->Init(AliasIdxBot, TypePtr::BOTTOM);
 899   _alias_types[AliasIdxRaw]->Init(AliasIdxRaw, TypeRawPtr::BOTTOM);
 900   _num_alias_types = AliasIdxRaw+1;
 901   // Zero out the alias type cache.
 902   Copy::zero_to_bytes(_alias_cache, sizeof(_alias_cache));
 903   // A NULL adr_type hits in the cache right away.  Preload the right answer.
 904   probe_alias_cache(NULL)->_index = AliasIdxTop;
 905 
 906   _intrinsics = NULL;
 907   _macro_nodes = new(comp_arena()) GrowableArray<Node*>(comp_arena(), 8,  0, NULL);
 908   _predicate_opaqs = new(comp_arena()) GrowableArray<Node*>(comp_arena(), 8,  0, NULL);
 909   register_library_intrinsics();
 910 }
 911 
 912 //---------------------------init_start----------------------------------------
 913 // Install the StartNode on this compile object.
 914 void Compile::init_start(StartNode* s) {
 915   if (failing())
 916     return; // already failing
 917   assert(s == start(), "");
 918 }
 919 
 920 StartNode* Compile::start() const {
 921   assert(!failing(), "");
 922   for (DUIterator_Fast imax, i = root()->fast_outs(imax); i < imax; i++) {
 923     Node* start = root()->fast_out(i);
 924     if( start->is_Start() )
 925       return start->as_Start();
 926   }
 927   ShouldNotReachHere();
 928   return NULL;