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

src/ic-ia32.cc

 // 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 120 matching lines @@
   Label miss;
 
   __ mov(eax, Operand(esp, kPointerSize));
 
   StubCompiler::GenerateLoadArrayLength(masm, eax, edx, &miss);
   __ bind(&miss);
   StubCompiler::GenerateLoadMiss(masm, Code::LOAD_IC);
 }
 
 
-void LoadIC::GenerateShortStringLength(MacroAssembler* masm) {
+void LoadIC::GenerateStringLength(MacroAssembler* masm) {
   // ----------- S t a t e -------------
   //  -- ecx    : name
   //  -- esp[0] : return address
   //  -- esp[4] : receiver
   // -----------------------------------
 
   Label miss;
 
   __ mov(eax, Operand(esp, kPointerSize));
 
-  StubCompiler::GenerateLoadShortStringLength(masm, eax, edx, &miss);
-  __ bind(&miss);
-  StubCompiler::GenerateLoadMiss(masm, Code::LOAD_IC);
-}
-
-
-void LoadIC::GenerateMediumStringLength(MacroAssembler* masm) {
-  // ----------- S t a t e -------------
-  //  -- ecx    : name
-  //  -- esp[0] : return address
-  //  -- esp[4] : receiver
-  // -----------------------------------
-
-  Label miss;
-
-  __ mov(eax, Operand(esp, kPointerSize));
-
-  StubCompiler::GenerateLoadMediumStringLength(masm, eax, edx, &miss);
-  __ bind(&miss);
-  StubCompiler::GenerateLoadMiss(masm, Code::LOAD_IC);
-}
-
-
-void LoadIC::GenerateLongStringLength(MacroAssembler* masm) {
-  // ----------- S t a t e -------------
-  //  -- ecx    : name
-  //  -- esp[0] : return address
-  //  -- esp[4] : receiver
-  // -----------------------------------
-
-  Label miss;
-
-  __ mov(eax, Operand(esp, kPointerSize));
-
-  StubCompiler::GenerateLoadLongStringLength(masm, eax, edx, &miss);
+  StubCompiler::GenerateLoadStringLength(masm, eax, edx, &miss);
   __ bind(&miss);
   StubCompiler::GenerateLoadMiss(masm, Code::LOAD_IC);
 }
 
 
 void LoadIC::GenerateFunctionPrototype(MacroAssembler* masm) {
   // ----------- S t a t e -------------
   //  -- ecx    : name
   //  -- esp[0] : return address
   //  -- esp[4] : receiver
@@ skipping 606 matching lines @@
 
   // Do tail-call to runtime routine.
   __ TailCallRuntime(
       ExternalReference(IC_Utility(kSharedStoreIC_ExtendStorage)), 3);
 }
 
 #undef __
 
 
 } }  // namespace v8::internal