Remove the different length string types...

src/arm/codegen-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 3290 matching lines @@
   ASSERT(kSmiTag == 0);
   __ tst(r0, Operand(kSmiTagMask | 0x80000000u));
   __ b(ne, &slow);  // The index was negative or not a Smi.
 
   __ bind(&try_again_with_new_string);
   __ CompareObjectType(r1, r2, r2, FIRST_NONSTRING_TYPE);
   __ b(ge, &slow);
 
   // Now r2 has the string type.
   __ ldr(r3, FieldMemOperand(r1, String::kLengthOffset));
-  __ and_(r4, r2, Operand(kStringSizeMask));
-  __ add(r4, r4, Operand(String::kLongLengthShift));
-  __ mov(r3, Operand(r3, LSR, r4));
   // Now r3 has the length of the string.  Compare with the index.
   __ cmp(r3, Operand(r0, LSR, kSmiTagSize));
   __ b(le, &slow);
 
   // Here we know the index is in range.  Check that string is sequential.
   ASSERT_EQ(0, kSeqStringTag);
   __ tst(r2, Operand(kStringRepresentationMask));
   __ b(ne, &not_a_flat_string);
 
   // Check whether it is an ASCII string.
@@ skipping 3149 matching lines @@
 int CompareStub::MinorKey() {
   // Encode the two parameters in a unique 16 bit value.
   ASSERT(static_cast<unsigned>(cc_) >> 28 < (1 << 15));
   return (static_cast<unsigned>(cc_) >> 27) | (strict_ ? 1 : 0);
 }
 
 
 #undef __
 
 } }  // namespace v8::internal