Implement lowering of JSLoadContext to machine operators.

src/runtime.cc

 // Copyright 2012 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.
 
 #include <stdlib.h>
 #include <limits>
 
 #include "src/v8.h"
 
 #include "src/accessors.h"
@@ skipping 9390 matching lines @@
     object = Handle<JSReceiver>(context->global_object());
   }
 
   RETURN_FAILURE_ON_EXCEPTION(
       isolate, Object::SetProperty(object, name, value, strict_mode));
 
   return *value;
 }
 
 
-RUNTIME_FUNCTION(Runtime_LoadContextRelative) {
-  SealHandleScope shs(isolate);
-  ASSERT(args.length() == 3);
-  CONVERT_ARG_CHECKED(Context, context, 0);
-  CONVERT_SMI_ARG_CHECKED(depth, 1);
-  CONVERT_SMI_ARG_CHECKED(index, 2);
-  while (depth-- > 0) {
-    context = context->previous();
-    ASSERT(context->IsContext());
-  }
-  return context->get(index);
-}
-
-
 RUNTIME_FUNCTION(Runtime_StoreContextRelative) {
   SealHandleScope shs(isolate);
   ASSERT(args.length() == 4);
   CONVERT_ARG_CHECKED(Context, context, 0);
   CONVERT_SMI_ARG_CHECKED(depth, 1);
   CONVERT_SMI_ARG_CHECKED(index, 2);
   CONVERT_ARG_CHECKED(Object, value, 3);
   while (depth-- > 0) {
     context = context->previous();
     ASSERT(context->IsContext());
@@ skipping 6177 matching lines @@
   }
   return NULL;
 }
 
 
 const Runtime::Function* Runtime::FunctionForId(Runtime::FunctionId id) {
   return &(kIntrinsicFunctions[static_cast<int>(id)]);
 }
 
 } }  // namespace v8::internal