Track references to allocation stubs via static_calls_table, instead of keeping two referencers ali…

runtime/vm/flow_graph_compiler.h

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #ifndef VM_FLOW_GRAPH_COMPILER_H_
 #define VM_FLOW_GRAPH_COMPILER_H_
 
 #include "vm/allocation.h"
 #include "vm/assembler.h"
 #include "vm/code_descriptors.h"
@@ skipping 483 matching lines @@
                                          const Function& target,
                                          const Array& arguments_descriptor,
                                          intptr_t num_args_tested);
 
   const ZoneGrowableArray<const ICData*>& deopt_id_to_ic_data() const {
     return *deopt_id_to_ic_data_;
   }
 
   Isolate* isolate() const { return isolate_; }
 
+  void AddStubCallTarget(const Code& code);
+
  private:
   friend class CheckStackOverflowSlowPath;  // For pending_deoptimization_env_.
 
   void EmitFrameEntry();
 
   void AddStaticCallTarget(const Function& function);
 
   void GenerateDeferredCode();
 
   void EmitInstructionPrologue(Instruction* instr);
@@ skipping 102 matching lines @@
   // Compiler specific per-block state.  Indexed by postorder block number
   // for convenience.  This is not the block's index in the block order,
   // which is reverse postorder.
   BlockEntryInstr* current_block_;
   ExceptionHandlerList* exception_handlers_list_;
   DescriptorList* pc_descriptors_list_;
   StackmapTableBuilder* stackmap_table_builder_;
   GrowableArray<BlockInfo*> block_info_;
   GrowableArray<CompilerDeoptInfo*> deopt_infos_;
   GrowableArray<SlowPathCode*> slow_path_code_;
-  // Stores: [code offset, function, null(code)].
+  // Stores: [code offset, function or null, null(code)].
+  // Stores static call targets as well as stub targets.
+  // TODO(srdjan): Evaluate if we should store allocation stub targets into a
+  // separate table?
   const GrowableObjectArray& static_calls_target_table_;
   const bool is_optimizing_;
   // Set to true if optimized code has IC calls.
   bool may_reoptimize_;
   // True while emitting intrinsic code.
   bool intrinsic_mode_;
   Label intrinsic_slow_path_label_;
 
   const Class& double_class_;
   const Class& mint_class_;
@@ skipping 15 matching lines @@
   intptr_t lazy_deopt_pc_offset_;
 
   ZoneGrowableArray<const ICData*>* deopt_id_to_ic_data_;
 
   DISALLOW_COPY_AND_ASSIGN(FlowGraphCompiler);
 };
 
 }  // namespace dart
 
 #endif  // VM_FLOW_GRAPH_COMPILER_H_