[runtime] Replace global object link with native context link in all contexts.

src/ic/x64/handler-compiler-x64.cc

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #if V8_TARGET_ARCH_X64
 
 #include "src/ic/call-optimization.h"
 #include "src/ic/handler-compiler.h"
 #include "src/ic/ic.h"
 #include "src/isolate-inl.h"
@@ skipping 60 matching lines @@
   Label done;
   NameDictionaryLookupStub::GenerateNegativeLookup(masm, miss_label, &done,
                                                    properties, name, scratch1);
   __ bind(&done);
   __ DecrementCounter(counters->negative_lookups_miss(), 1);
 }
 
 
 void NamedLoadHandlerCompiler::GenerateDirectLoadGlobalFunctionPrototype(
     MacroAssembler* masm, int index, Register result, Label* miss) {
-  const int offset = Context::SlotOffset(Context::GLOBAL_OBJECT_INDEX);
-  __ movp(result, Operand(rsi, offset));
-  __ movp(result, FieldOperand(result, JSGlobalObject::kNativeContextOffset));
-  __ movp(result, Operand(result, Context::SlotOffset(index)));
+  __ LoadNativeContextSlot(index, result);
   // Load its initial map. The global functions all have initial maps.
   __ movp(result,
           FieldOperand(result, JSFunction::kPrototypeOrInitialMapOffset));
   // Load the prototype from the initial map.
   __ movp(result, FieldOperand(result, Map::kPrototypeOffset));
 }
 
 
 void NamedLoadHandlerCompiler::GenerateLoadFunctionPrototype(
     MacroAssembler* masm, Register receiver, Register result, Register scratch,
@@ skipping 712 matching lines @@
   // Return the generated code.
   return GetCode(kind(), Code::NORMAL, name);
 }
 
 
 #undef __
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_X64