harmony-scoping: Implement StoreIC handler for stores to global contexts.

src/ic/ic.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/v8.h"
 
 #include "src/accessors.h"
 #include "src/api.h"
 #include "src/arguments.h"
 #include "src/base/bits.h"
@@ skipping 1378 matching lines @@
     Handle<GlobalContextTable> global_contexts(
         global->native_context()->global_context_table());
 
     GlobalContextTable::LookupResult lookup_result;
     if (GlobalContextTable::Lookup(global_contexts, str_name, &lookup_result)) {
       Handle<Context> global_context = GlobalContextTable::GetContext(
           global_contexts, lookup_result.context_index);
       if (lookup_result.mode == CONST) {
         return TypeError("harmony_const_assign", object, name);
       }
+
+      if (FLAG_use_ic &&
+          StoreGlobalContextFieldStub::Accepted(&lookup_result)) {
+        StoreGlobalContextFieldStub stub(isolate(), &lookup_result);
+        PatchCache(name, stub.GetCode());
+      }
+
       global_context->set(lookup_result.slot_index, *value);
       return value;
     }
   }
 
   // TODO(verwaest): Let SetProperty do the migration, since storing a property
   // might deprecate the current map again, if value does not fit.
   if (MigrateDeprecated(object) || object->IsJSProxy()) {
     Handle<Object> result;
     ASSIGN_RETURN_ON_EXCEPTION(
@@ skipping 1365 matching lines @@
 static const Address IC_utilities[] = {
 #define ADDR(name) FUNCTION_ADDR(name),
     IC_UTIL_LIST(ADDR) NULL
 #undef ADDR
 };
 
 
 Address IC::AddressFromUtilityId(IC::UtilityId id) { return IC_utilities[id]; }
 }
 }  // namespace v8::internal