TypeofMode replaces TypeofState and ContextualMode.

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 2966 matching lines @@
   LookupIterator it(receiver, name, holder, LookupIterator::OWN);
   bool done;
   Handle<Object> result;
   ASSIGN_RETURN_FAILURE_ON_EXCEPTION(
       isolate, result, JSObject::GetPropertyWithInterceptor(&it, &done));
   if (done) return *result;
   return isolate->heap()->no_interceptor_result_sentinel();
 }
 
 
-static Object* ThrowReferenceError(Isolate* isolate, Name* name) {
-  // If the load is non-contextual, just return the undefined result.
+static Object* ThrowReferenceError(Isolate* isolate, LookupIterator* it) {
+  // If it's not load of an undeclared global, just return the undefined result.
   // Note that both keyed and non-keyed loads may end up here.
   HandleScope scope(isolate);
   LoadIC ic(IC::NO_EXTRA_FRAME, isolate, true);
-  if (ic.contextual_mode() != CONTEXTUAL) {
+  if (!ic.IsUndeclaredGlobal(it->GetReceiver())) {
     return isolate->heap()->undefined_value();
   }
 
   // Throw a reference error.
-  Handle<Name> name_handle(name);
   THROW_NEW_ERROR_RETURN_FAILURE(
-      isolate, NewReferenceError(MessageTemplate::kNotDefined, name_handle));
+      isolate, NewReferenceError(MessageTemplate::kNotDefined, it->name()));
 }
 
 
 /**
  * Loads a property with an interceptor performing post interceptor
  * lookup if interceptor failed.
  */
 RUNTIME_FUNCTION(LoadPropertyWithInterceptor) {
   HandleScope scope(isolate);
   DCHECK(args.length() == NamedLoadHandlerCompiler::kInterceptorArgsLength);
   Handle<Name> name =
       args.at<Name>(NamedLoadHandlerCompiler::kInterceptorArgsNameIndex);
   Handle<JSObject> receiver =
       args.at<JSObject>(NamedLoadHandlerCompiler::kInterceptorArgsThisIndex);
   Handle<JSObject> holder =
       args.at<JSObject>(NamedLoadHandlerCompiler::kInterceptorArgsHolderIndex);
 
   Handle<Object> result;
   LookupIterator it(receiver, name, holder);
   // TODO(conradw): Investigate strong mode semantics for this.
   ASSIGN_RETURN_FAILURE_ON_EXCEPTION(isolate, result,
                                      JSObject::GetProperty(&it));
 
   if (it.IsFound()) return *result;
 
-  return ThrowReferenceError(isolate, Name::cast(args[0]));
+  return ThrowReferenceError(isolate, &it);

[Toon Verwaest, 2015/07/13 12:56:03]

Just inline the helper method here, if it's the only user.

[Igor Sheludko, 2015/07/13 13:08:02]

Done.

 }
 
 
 RUNTIME_FUNCTION(StorePropertyWithInterceptor) {
   HandleScope scope(isolate);
   DCHECK(args.length() == 3);
   StoreIC ic(IC::NO_EXTRA_FRAME, isolate);
   Handle<JSObject> receiver = args.at<JSObject>(0);
   Handle<Name> name = args.at<Name>(1);
   Handle<Object> value = args.at<Object>(2);
@@ skipping 69 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 internal
 }  // namespace v8