Always load the JavaScript builtins code entry from the JavaScript...

src/x64/macro-assembler-x64.h

 // Copyright 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
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   // Calculate the number of stack slots to reserve for arguments when calling a
   // C function.
   int ArgumentStackSlotsForCFunctionCall(int num_arguments);
 
   // ---------------------------------------------------------------------------
   // Utilities
 
   void Ret();
 
-  struct Unresolved {
-    int pc;
-    uint32_t flags;  // see Bootstrapper::FixupFlags decoders/encoders.
-    const char* name;
-  };
-  List<Unresolved>* unresolved() { return &unresolved_; }
-
   Handle<Object> CodeObject() { return code_object_; }
 
 
   // ---------------------------------------------------------------------------
   // StatsCounter support
 
   void SetCounter(StatsCounter* counter, int value);
   void IncrementCounter(StatsCounter* counter, int value);
   void DecrementCounter(StatsCounter* counter, int value);
 
@@ skipping 11 matching lines @@
   // Print a message to stdout and abort execution.
   void Abort(const char* msg);
 
   // Verify restrictions about code generated in stubs.
   void set_generating_stub(bool value) { generating_stub_ = value; }
   bool generating_stub() { return generating_stub_; }
   void set_allow_stub_calls(bool value) { allow_stub_calls_ = value; }
   bool allow_stub_calls() { return allow_stub_calls_; }
 
  private:
-  List<Unresolved> unresolved_;
   bool generating_stub_;
   bool allow_stub_calls_;
   // This handle will be patched with the code object on installation.
   Handle<Object> code_object_;
 
   // Helper functions for generating invokes.
   void InvokePrologue(const ParameterCount& expected,
                       const ParameterCount& actual,
                       Handle<Code> code_constant,
                       Register code_register,
                       Label* done,
                       InvokeFlag flag);
 
-  // Prepares for a call or jump to a builtin by doing two things:
-  // 1. Emits code that fetches the builtin's function object from the context
-  //    at runtime, and puts it in the register rdi.
-  // 2. Fetches the builtin's code object, and returns it in a handle, at
-  //    compile time, so that later code can emit instructions to jump or call
-  //    the builtin directly.  If the code object has not yet been created, it
-  //    returns the builtin code object for IllegalFunction, and sets the
-  //    output parameter "resolved" to false.  Code that uses the return value
-  //    should then add the address and the builtin name to the list of fixups
-  //    called unresolved_, which is fixed up by the bootstrapper.
-  Handle<Code> ResolveBuiltin(Builtins::JavaScript id, bool* resolved);
-
   // Activation support.
   void EnterFrame(StackFrame::Type type);
   void LeaveFrame(StackFrame::Type type);
 
   // Allocation support helpers.
   void LoadAllocationTopHelper(Register result,
                                Register result_end,
                                Register scratch,
                                AllocationFlags flags);
   void UpdateAllocationTopHelper(Register result_end, Register scratch);
@@ skipping 56 matching lines @@
   }                                                                       \
   masm->
 #else
 #define ACCESS_MASM(masm) masm->
 #endif
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_X64_MACRO_ASSEMBLER_X64_H_