[serializer] Move clearing of optimized code map out of GC.

src/objects.cc

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/objects.h"
 
 #include <cmath>
 #include <iomanip>
 #include <sstream>
 
@@ skipping 11017 matching lines @@
   }
   set_code_no_write_barrier(
       isolate->builtins()->builtin(Builtins::kCompileOptimizedConcurrent));
   // No write barrier required, since the builtin is part of the root set.
 }
 
 
 void SharedFunctionInfo::AddSharedCodeToOptimizedCodeMap(
     Handle<SharedFunctionInfo> shared, Handle<Code> code) {
   Isolate* isolate = shared->GetIsolate();
+  if (isolate->serializer_enabled()) return;
   DCHECK(code->kind() == Code::OPTIMIZED_FUNCTION);
   Handle<Object> value(shared->optimized_code_map(), isolate);
   if (value->IsSmi()) return;  // Empty code maps are unsupported.
   Handle<FixedArray> code_map = Handle<FixedArray>::cast(value);
   code_map->set(kSharedCodeIndex, *code);
 }
 
 
 void SharedFunctionInfo::AddToOptimizedCodeMap(
     Handle<SharedFunctionInfo> shared, Handle<Context> native_context,
     Handle<HeapObject> code, Handle<LiteralsArray> literals,
     BailoutId osr_ast_id) {
   Isolate* isolate = shared->GetIsolate();
+  if (isolate->serializer_enabled()) return;
   DCHECK(*code == isolate->heap()->undefined_value() ||
          !shared->SearchOptimizedCodeMap(*native_context, osr_ast_id).code);
   DCHECK(*code == isolate->heap()->undefined_value() ||
          Code::cast(*code)->kind() == Code::OPTIMIZED_FUNCTION);
   DCHECK(native_context->IsNativeContext());
   STATIC_ASSERT(kEntryLength == 4);
   Handle<FixedArray> new_code_map;
   Handle<Object> value(shared->optimized_code_map(), isolate);
   int entry;
   if (value->IsSmi()) {
@@ skipping 6819 matching lines @@
   if (cell->value() != *new_value) {
     cell->set_value(*new_value);
     Isolate* isolate = cell->GetIsolate();
     cell->dependent_code()->DeoptimizeDependentCodeGroup(
         isolate, DependentCode::kPropertyCellChangedGroup);
   }
 }
 
 }  // namespace internal
 }  // namespace v8