Serendipitously arrange the tags so that String.length() becomes a branch-fre...

src/stub-cache.h

 // Copyright 2006-2008 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 80 matching lines @@
 
   static Object* ComputeKeyedLoadConstant(String* name, JSObject* receiver,
                                           JSObject* holder, Object* value);
 
   static Object* ComputeKeyedLoadInterceptor(String* name,
                                              JSObject* receiver,
                                              JSObject* holder);
 
   static Object* ComputeKeyedLoadArrayLength(String* name, JSArray* receiver);
 
-  static Object* ComputeKeyedLoadShortStringLength(String* name,
-                                                   String* receiver);
-
-  static Object* ComputeKeyedLoadMediumStringLength(String* name,
-                                                    String* receiver);
-
-  static Object* ComputeKeyedLoadLongStringLength(String* name,
-                                                  String* receiver);
+  static Object* ComputeKeyedLoadStringLength(String* name,
+                                              String* receiver);
 
   static Object* ComputeKeyedLoadFunctionPrototype(String* name,
                                                    JSFunction* receiver);
 
   // ---
 
   static Object* ComputeStoreField(String* name,
                                    JSObject* receiver,
                                    int field_index,
                                    Map* transition = NULL);
@@ skipping 215 matching lines @@
                                       JSObject* holder,
                                       Register receiver,
                                       Register name,
                                       Register scratch1,
                                       Register scratch2,
                                       Label* miss_label);
   static void GenerateLoadArrayLength(MacroAssembler* masm,
                                       Register receiver,
                                       Register scratch,
                                       Label* miss_label);
-  static void GenerateLoadShortStringLength(MacroAssembler* masm,
-                                            Register receiver,
-                                            Register scratch,
-                                            Label* miss_label);
-  static void GenerateLoadMediumStringLength(MacroAssembler* masm,
-                                             Register receiver,
-                                             Register scratch,
-                                             Label* miss_label);
-  static void GenerateLoadLongStringLength(MacroAssembler* masm,
-                                           Register receiver,
-                                           Register scratch,
-                                           Label* miss_label);
+  static void GenerateLoadStringLength(MacroAssembler* masm,
+                                       Register receiver,
+                                       Register scratch,
+                                       Label* miss_label);
   static void GenerateLoadFunctionPrototype(MacroAssembler* masm,
                                             Register receiver,
                                             Register scratch1,
                                             Register scratch2,
                                             Label* miss_label);
   static void GenerateStoreField(MacroAssembler* masm,
                                  Builtins::Name storage_extend,
                                  JSObject* object,
                                  int index,
                                  Map* transition,
@@ skipping 42 matching lines @@
                               JSObject* holder,
                               AccessorInfo* callback);
   Object* CompileLoadConstant(String* name,
                               JSObject* object,
                               JSObject* holder,
                               Object* value);
   Object* CompileLoadInterceptor(JSObject* object,
                                  JSObject* holder,
                                  String* name);
   Object* CompileLoadArrayLength(String* name);
-  Object* CompileLoadShortStringLength(String* name);
-  Object* CompileLoadMediumStringLength(String* name);
-  Object* CompileLoadLongStringLength(String* name);
+  Object* CompileLoadStringLength(String* name);
   Object* CompileLoadFunctionPrototype(String* name);
 
  private:
   Object* GetCode(PropertyType);
 };
 
 
 class StoreStubCompiler: public StubCompiler {
  public:
   Object* CompileStoreField(JSObject* object,
@@ skipping 40 matching lines @@
 
   const ParameterCount& arguments() { return arguments_; }
 
   Object* GetCode(PropertyType type);
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_STUB_CACHE_H_