Eliminate extended mode, and other modes clean-up

src/code-stubs-hydrogen.cc

 // Copyright 2012 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 1277 matching lines @@
       Add<HConstant>(factory->empty_fixed_array());
   HValue* shared_info = GetParameter(0);
 
   AddIncrementCounter(counters->fast_new_closure_total());
 
   // Create a new closure from the given function info in new space
   HValue* size = Add<HConstant>(JSFunction::kSize);
   HInstruction* js_function = Add<HAllocate>(size, HType::JSObject(),
                                              NOT_TENURED, JS_FUNCTION_TYPE);
 
-  int map_index = Context::FunctionMapIndex(casted_stub()->language_mode(),
+  int map_index = Context::FunctionMapIndex(casted_stub()->strict_mode(),
                                             casted_stub()->is_generator());
 
   // Compute the function map in the current native context and set that
   // as the map of the allocated object.
   HInstruction* native_context = BuildGetNativeContext();
   HInstruction* map_slot_value = Add<HLoadNamedField>(
       native_context, static_cast<HValue*>(NULL),
       HObjectAccess::ForContextSlot(map_index));
   Add<HStoreNamedField>(js_function, HObjectAccess::ForMap(), map_slot_value);
 
@@ skipping 111 matching lines @@
   return BuildRegExpConstructResult(length, index, input);
 }
 
 
 Handle<Code> RegExpConstructResultStub::GenerateCode(Isolate* isolate) {
   return DoGenerateCode(isolate, this);
 }
 
 
 } }  // namespace v8::internal