Call JS functions via native context instead of js builtins object.

src/assembler.cc

 // Copyright (c) 1994-2006 Sun Microsystems Inc.
 // 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.
 //
@@ skipping 962 matching lines @@
     ApiFunction* fun,
     Type type = ExternalReference::BUILTIN_CALL,
     Isolate* isolate = NULL)
   : address_(Redirect(isolate, fun->address(), type)) {}
 
 
 ExternalReference::ExternalReference(Builtins::Name name, Isolate* isolate)
   : address_(isolate->builtins()->builtin_address(name)) {}
 
 
-ExternalReference::ExternalReference(Runtime::FunctionId id,
-                                     Isolate* isolate)
-  : address_(Redirect(isolate, Runtime::FunctionForId(id)->entry)) {}
+ExternalReference::ExternalReference(Runtime::FunctionId id, Isolate* isolate)
+    : address_(Redirect(isolate, Runtime::FunctionForId(id)->entry)) {
+  DCHECK_NE(Runtime::CONTEXT, Runtime::FunctionForId(id)->intrinsic_type);
+}
 
 
 ExternalReference::ExternalReference(const Runtime::Function* f,
                                      Isolate* isolate)
-  : address_(Redirect(isolate, f->entry)) {}
+    : address_(Redirect(isolate, f->entry)) {
+  DCHECK_NE(Runtime::CONTEXT, f->intrinsic_type);
+}
 
 
 ExternalReference ExternalReference::isolate_address(Isolate* isolate) {
   return ExternalReference(isolate);
 }
 
 
 ExternalReference::ExternalReference(StatsCounter* counter)
   : address_(reinterpret_cast<Address>(counter->GetInternalPointer())) {}
 
@@ skipping 820 matching lines @@
 
 
 void Assembler::DataAlign(int m) {
   DCHECK(m >= 2 && base::bits::IsPowerOfTwo32(m));
   while ((pc_offset() & (m - 1)) != 0) {
     db(0);
   }
 }
 }  // namespace internal
 }  // namespace v8