[builtins] Support SameValue and SameValueZero via runtime functions.

src/runtime/runtime-object.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.
 
 #include "src/runtime/runtime-utils.h"
 
 #include "src/arguments.h"
 #include "src/bootstrapper.h"
 #include "src/debug/debug.h"
 #include "src/isolate-inl.h"
@@ skipping 1142 matching lines @@
 RUNTIME_FUNCTION(Runtime_StrictEquals) {
   SealHandleScope scope(isolate);
   DCHECK_EQ(2, args.length());
   CONVERT_ARG_CHECKED(Object, x, 0);
   CONVERT_ARG_CHECKED(Object, y, 1);
   // TODO(bmeurer): Change this at some point to return true/false instead.
   return Smi::FromInt(x->StrictEquals(y) ? EQUAL : NOT_EQUAL);
 }
 
 
+RUNTIME_FUNCTION(Runtime_SameValue) {
+  SealHandleScope scope(isolate);
+  DCHECK_EQ(2, args.length());
+  CONVERT_ARG_CHECKED(Object, x, 0);
+  CONVERT_ARG_CHECKED(Object, y, 1);
+  return isolate->heap()->ToBoolean(x->SameValue(y));
+}
+
+
+RUNTIME_FUNCTION(Runtime_SameValueZero) {
+  SealHandleScope scope(isolate);
+  DCHECK_EQ(2, args.length());
+  CONVERT_ARG_CHECKED(Object, x, 0);
+  CONVERT_ARG_CHECKED(Object, y, 1);
+  return isolate->heap()->ToBoolean(x->SameValueZero(y));
+}
+
+
 // TODO(bmeurer): Kill this special wrapper and use TF compatible LessThan,
 // GreaterThan, etc. which return true or false.
 RUNTIME_FUNCTION(Runtime_Compare) {
   HandleScope scope(isolate);
   DCHECK_EQ(3, args.length());
   CONVERT_ARG_HANDLE_CHECKED(Object, x, 0);
   CONVERT_ARG_HANDLE_CHECKED(Object, y, 1);
   CONVERT_ARG_HANDLE_CHECKED(Object, ncr, 2);
   Maybe<ComparisonResult> result = Object::Compare(x, y);
   if (result.IsJust()) {
@@ skipping 132 matching lines @@
   DCHECK(args.length() == 2);
   CONVERT_ARG_HANDLE_CHECKED(Object, o, 0);
   CONVERT_ARG_HANDLE_CHECKED(Object, properties, 1);
   ASSIGN_RETURN_FAILURE_ON_EXCEPTION(
       isolate, o, JSReceiver::DefineProperties(isolate, o, properties));
   return *o;
 }
 
 }  // namespace internal
 }  // namespace v8