Remove the different length string types...

src/arm/stub-cache-arm.cc

 // Copyright 2006-2009 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 211 matching lines @@
                                              Label* miss) {
   Label check_string, check_wrapper;
 
   __ bind(&check_string);
   // Check if the object is a string leaving the instance type in the
   // scratch1 register.
   GenerateStringCheck(masm, receiver, scratch1, scratch2,
                       miss, &check_wrapper);
 
   // Load length directly from the string.
-  __ and_(scratch1, scratch1, Operand(kStringSizeMask));
-  __ add(scratch1, scratch1, Operand(String::kHashShift));
   __ ldr(r0, FieldMemOperand(receiver, String::kLengthOffset));
-  __ mov(r0, Operand(r0, LSR, scratch1));
   __ mov(r0, Operand(r0, LSL, kSmiTagSize));
   __ Ret();
 
   // Check if the object is a JSValue wrapper.
   __ bind(&check_wrapper);
   __ cmp(scratch1, Operand(JS_VALUE_TYPE));
   __ b(ne, miss);
 
   // Unwrap the value in place and check if the wrapped value is a string.
   __ ldr(receiver, FieldMemOperand(receiver, JSValue::kValueOffset));
@@ skipping 1235 matching lines @@
   __ Jump(generic_construct_stub, RelocInfo::CODE_TARGET);
 
   // Return the generated code.
   return GetCode();
 }
 
 
 #undef __
 
 } }  // namespace v8::internal