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

runtime/vm/flow_graph_compiler.cc

 // Copyright (c) 2013, 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.
 
 #include "vm/globals.h"  // Needed here to get TARGET_ARCH_XXX.
 
 #include "vm/flow_graph_compiler.h"
 
 #include "vm/bit_vector.h"
 #include "vm/cha.h"
@@ skipping 522 matching lines @@
   ASSERT(Code::kSCallTableOffsetEntry == 0);
   static_calls_target_table_.Add(
       Smi::Handle(Smi::New(assembler()->CodeSize())));
   ASSERT(Code::kSCallTableFunctionEntry == 1);
   static_calls_target_table_.Add(func);
   ASSERT(Code::kSCallTableCodeEntry == 2);
   static_calls_target_table_.Add(Code::Handle());
 }
 
 
+void FlowGraphCompiler::AddStubCallTarget(const Code& code) {
+  ASSERT(Code::kSCallTableEntryLength == 3);
+  ASSERT(Code::kSCallTableOffsetEntry == 0);
+  static_calls_target_table_.Add(
+      Smi::Handle(Smi::New(assembler()->CodeSize())));
+  ASSERT(Code::kSCallTableFunctionEntry == 1);
+  static_calls_target_table_.Add(Function::Handle());
+  ASSERT(Code::kSCallTableCodeEntry == 2);
+  static_calls_target_table_.Add(code);
+}
+
+
 void FlowGraphCompiler::AddDeoptIndexAtCall(intptr_t deopt_id,
                                             intptr_t token_pos) {
   ASSERT(is_optimizing());
   ASSERT(!intrinsic_mode());
   CompilerDeoptInfo* info =
       new CompilerDeoptInfo(deopt_id,
                             ICData::kDeoptAtCall,
                             pending_deoptimization_env_);
   info->set_pc_offset(assembler()->CodeSize());
   deopt_infos_.Add(info);
@@ skipping 917 matching lines @@
     threshold = FLAG_optimization_counter_scale * basic_blocks +
         FLAG_min_optimization_counter_threshold;
     if (threshold > FLAG_optimization_counter_threshold) {
       threshold = FLAG_optimization_counter_threshold;
     }
   }
   return threshold;
 }
 
 }  // namespace dart