[turbofan] Add support for named access to Number primitives.

src/compiler/access-info.cc

 // Copyright 2015 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 <ostream>
 
 #include "src/accessors.h"
 #include "src/compilation-dependencies.h"
 #include "src/compiler/access-info.h"
 #include "src/field-index-inl.h"
@@ skipping 10 matching lines @@
 bool CanInlineElementAccess(Handle<Map> map) {
   // TODO(bmeurer): IsJSObjectMap
   // TODO(bmeurer): !map->has_dictionary_elements()
   // TODO(bmeurer): !map->has_sloppy_arguments_elements()
   return map->IsJSArrayMap() && map->has_fast_elements() &&
          !map->has_indexed_interceptor() && !map->is_access_check_needed();
 }
 
 
 bool CanInlinePropertyAccess(Handle<Map> map) {
-  // TODO(bmeurer): Add support for Number primitives.
-  // if (map->instance_type() == HEAP_NUMBER_TYPE) return false;
+  if (map->instance_type() == HEAP_NUMBER_TYPE) return true;
   if (map->instance_type() < FIRST_NONSTRING_TYPE) return true;
   return map->IsJSObjectMap() && !map->is_dictionary_map() &&
          !map->has_named_interceptor() &&
          // TODO(verwaest): Whitelist contexts to which we have access.
          !map->is_access_check_needed();
 }
 
 }  // namespace
 
 
@@ skipping 358 matching lines @@
   }
   return false;
 }
 
 
 Factory* AccessInfoFactory::factory() const { return isolate()->factory(); }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8