Cache optimized code on shared function info.

src/objects-inl.h

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 3013 matching lines @@
 ACCESSORS(DebugInfo, code, Code, kPatchedCodeIndex)
 ACCESSORS(DebugInfo, break_points, FixedArray, kBreakPointsStateIndex)
 
 ACCESSORS(BreakPointInfo, code_position, Smi, kCodePositionIndex)
 ACCESSORS(BreakPointInfo, source_position, Smi, kSourcePositionIndex)
 ACCESSORS(BreakPointInfo, statement_position, Smi, kStatementPositionIndex)
 ACCESSORS(BreakPointInfo, break_point_objects, Object, kBreakPointObjectsIndex)
 #endif
 
 ACCESSORS(SharedFunctionInfo, name, Object, kNameOffset)
+ACCESSORS_GCSAFE(SharedFunctionInfo, optimized_code_map, Object,
+                 kOptimizedCodeMapOffset)
 ACCESSORS_GCSAFE(SharedFunctionInfo, construct_stub, Code, kConstructStubOffset)
 ACCESSORS_GCSAFE(SharedFunctionInfo, initial_map, Object, kInitialMapOffset)
 ACCESSORS(SharedFunctionInfo, instance_class_name, Object,
           kInstanceClassNameOffset)
 ACCESSORS(SharedFunctionInfo, function_data, Object, kFunctionDataOffset)
 ACCESSORS(SharedFunctionInfo, script, Object, kScriptOffset)
 ACCESSORS(SharedFunctionInfo, debug_info, Object, kDebugInfoOffset)
 ACCESSORS(SharedFunctionInfo, inferred_name, String, kInferredNameOffset)
 ACCESSORS(SharedFunctionInfo, this_property_assignments, Object,
           kThisPropertyAssignmentsOffset)
@@ skipping 138 matching lines @@
 }
 
 
 void SharedFunctionInfo::set_strict_mode(bool value) {
   set_compiler_hints(BooleanBit::set(compiler_hints(),
                                      kStrictModeFunction,
                                      value));
 }
 
 
+void SharedFunctionInfo::BeforeVisitingPointers() {
+  if (IsInobjectSlackTrackingInProgress()) DetachInitialMap();
+
+  // Flush optimized code map on major GC.
+  // Note: we may experiment with rebuilding it or retaining entries
+  // which should survive as we iterate through optimized functions
+  // anyway.
+  set_optimized_code_map(Smi::FromInt(0));
+}
+
+
 ACCESSORS(CodeCache, default_cache, FixedArray, kDefaultCacheOffset)
 ACCESSORS(CodeCache, normal_type_cache, Object, kNormalTypeCacheOffset)
 
 bool Script::HasValidSource() {
   Object* src = this->source();
   if (!src->IsString()) return true;
   String* src_str = String::cast(src);
   if (!StringShape(src_str).IsExternal()) return true;
   if (src_str->IsAsciiRepresentation()) {
     return ExternalAsciiString::cast(src)->resource() != NULL;
@@ skipping 955 matching lines @@
 #undef WRITE_INT_FIELD
 #undef READ_SHORT_FIELD
 #undef WRITE_SHORT_FIELD
 #undef READ_BYTE_FIELD
 #undef WRITE_BYTE_FIELD
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_INL_H_