Use a WeakCell in the CallIC type vector.

src/code-stubs.cc

 // Copyright 2012 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/code-stubs.h"
 
 #include <sstream>
 
 #include "src/bootstrapper.h"
 #include "src/cpu-profiler.h"
@@ skipping 661 matching lines @@
     CodeStubDescriptor* descriptor) {
   FastCloneShallowObjectDescriptor call_descriptor(isolate());
   descriptor->Initialize(
       Runtime::FunctionForId(Runtime::kCreateObjectLiteral)->entry);
 }
 
 
 void CreateAllocationSiteStub::InitializeDescriptor(CodeStubDescriptor* d) {}
 
 
+void CreateWeakCellStub::InitializeDescriptor(CodeStubDescriptor* d) {}
+
+
 void RegExpConstructResultStub::InitializeDescriptor(
     CodeStubDescriptor* descriptor) {
   descriptor->Initialize(
       Runtime::FunctionForId(Runtime::kRegExpConstructResult)->entry);
 }
 
 
 void TransitionElementsKindStub::InitializeDescriptor(
     CodeStubDescriptor* descriptor) {
   descriptor->Initialize(
@@ skipping 39 matching lines @@
   descriptor->Initialize(Runtime::FunctionForId(Runtime::kStringAdd)->entry);
 }
 
 
 void CreateAllocationSiteStub::GenerateAheadOfTime(Isolate* isolate) {
   CreateAllocationSiteStub stub(isolate);
   stub.GetCode();
 }
 
 
+void CreateWeakCellStub::GenerateAheadOfTime(Isolate* isolate) {
+  CreateWeakCellStub stub(isolate);
+  stub.GetCode();
+}
+
+
 void StoreElementStub::Generate(MacroAssembler* masm) {
   switch (elements_kind()) {
     case FAST_ELEMENTS:
     case FAST_HOLEY_ELEMENTS:
     case FAST_SMI_ELEMENTS:
     case FAST_HOLEY_SMI_ELEMENTS:
     case FAST_DOUBLE_ELEMENTS:
     case FAST_HOLEY_DOUBLE_ELEMENTS:
 #define TYPED_ARRAY_CASE(Type, type, TYPE, ctype, size) \
     case EXTERNAL_##TYPE##_ELEMENTS:                    \
@@ skipping 214 matching lines @@
 }
 
 
 InternalArrayConstructorStub::InternalArrayConstructorStub(
     Isolate* isolate) : PlatformCodeStub(isolate) {
   InternalArrayConstructorStubBase::GenerateStubsAheadOfTime(isolate);
 }
 
 
 } }  // namespace v8::internal