Remove special String.fromCharCode call IC support.

src/x64/stub-cache-x64.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 1887 matching lines @@
       argc + 1,
       1);
 
   HandlerFrontendFooter(&miss);
 
   // Return the generated code.
   return GetCode(type, name);
 }
 
 
-Handle<Code> CallStubCompiler::CompileStringFromCharCodeCall(
-    Handle<Object> object,
-    Handle<JSObject> holder,
-    Handle<Cell> cell,
-    Handle<JSFunction> function,
-    Handle<String> name,
-    Code::StubType type) {
-  // If the object is not a JSObject or we got an unexpected number of
-  // arguments, bail out to the regular call.
-  const int argc = arguments().immediate();
-  StackArgumentsAccessor args(rsp, argc);
-  if (!object->IsJSObject() || argc != 1) return Handle<Code>::null();
-
-  Label miss;
-
-  HandlerFrontendHeader(object, holder, name, RECEIVER_MAP_CHECK, &miss);
-  if (!cell.is_null()) {
-    ASSERT(cell->value() == *function);
-    GenerateLoadFunctionFromCell(cell, function, &miss);
-  }
-
-  // Load the char code argument.
-  Register code = rbx;
-  __ movq(code, args.GetArgumentOperand(1));
-
-  // Check the code is a smi.
-  Label slow;
-  __ JumpIfNotSmi(code, &slow);
-
-  // Convert the smi code to uint16.
-  __ SmiAndConstant(code, code, Smi::FromInt(0xffff));
-
-  StringCharFromCodeGenerator generator(code, rax);
-  generator.GenerateFast(masm());
-  __ ret(2 * kPointerSize);
-
-  StubRuntimeCallHelper call_helper;
-  generator.GenerateSlow(masm(), call_helper);
-
-  __ bind(&slow);
-  // We do not have to patch the receiver because the function makes no use of
-  // it.
-  GenerateJumpFunctionIgnoreReceiver(function);
-
-  HandlerFrontendFooter(&miss);
-
-  // Return the generated code.
-  return GetCode(type, name);
-}
-
-
 Handle<Code> CallStubCompiler::CompileFastApiCall(
     const CallOptimization& optimization,
     Handle<Object> object,
     Handle<JSObject> holder,
     Handle<Cell> cell,
     Handle<JSFunction> function,
     Handle<String> name) {
   ASSERT(optimization.is_simple_api_call());
   // Bail out if object is a global object as we don't want to
   // repatch it to global receiver.
@@ skipping 586 matching lines @@
   // -----------------------------------
   TailCallBuiltin(masm, Builtins::kKeyedLoadIC_Miss);
 }
 
 
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_X64