Make ICData changes thread safe (first compute array, then set it). Install code in the main thread…

runtime/vm/intermediate_language.h

 // 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.
 
 #ifndef VM_INTERMEDIATE_LANGUAGE_H_
 #define VM_INTERMEDIATE_LANGUAGE_H_
 
 #include "vm/allocation.h"
 #include "vm/ast.h"
 #include "vm/growable_array.h"
@@ skipping 1311 matching lines @@
 
   void AddIndirectEntry(IndirectEntryInstr* entry) {
     indirect_entries_.Add(entry);
   }
 
   GrowableArray<Definition*>* initial_definitions() {
     return &initial_definitions_;
   }
   ConstantInstr* constant_null();
 
-  bool IsCompiledForOsr() const { return osr_id_ != Thread::kNoDeoptId; }
+  bool IsCompiledForOsr() const;
 
   intptr_t entry_count() const { return entry_count_; }
   void set_entry_count(intptr_t count) { entry_count_ = count; }
 
   intptr_t spill_slot_count() const { return spill_slot_count_; }
   void set_spill_slot_count(intptr_t count) {
     ASSERT(count >= 0);
     spill_slot_count_ = count;
   }
 
@@ skipping 6768 matching lines @@
   LocationSummary* Name::MakeLocationSummary(Zone* zone, bool opt) const {    \
     UNIMPLEMENTED();                                                          \
     return NULL;                                                              \
   }                                                                           \
   void Name::EmitNativeCode(FlowGraphCompiler* compiler) { UNIMPLEMENTED(); }
 
 
 }  // namespace dart
 
 #endif  // VM_INTERMEDIATE_LANGUAGE_H_