Refactor optimized in hydrogen only runtime functions.

src/ia32/lithium-codegen-ia32.cc

 // Copyright 2012 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 4784 matching lines @@
   STATIC_ASSERT(String::kMaxLength <= Smi::kMaxValue);
   if (instr->index()->IsConstantOperand()) {
     Immediate immediate = ToImmediate(LConstantOperand::cast(instr->index()),
                                       Representation::Smi());
     __ push(immediate);
   } else {
     Register index = ToRegister(instr->index());
     __ SmiTag(index);
     __ push(index);
   }
-  CallRuntimeFromDeferred(Runtime::kStringCharCodeAt, 2,
+  CallRuntimeFromDeferred(Runtime::kHiddenStringCharCodeAt, 2,
                           instr, instr->context());
   __ AssertSmi(eax);
   __ SmiUntag(eax);
   __ StoreToSafepointRegisterSlot(result, eax);
 }
 
 
 void LCodeGen::DoStringCharFromCode(LStringCharFromCode* instr) {
   class DeferredStringCharFromCode V8_FINAL : public LDeferredCode {
    public:
@@ skipping 1532 matching lines @@
                               FixedArray::kHeaderSize - kPointerSize));
   __ bind(&done);
 }
 
 
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_IA32