Rename %_IsSpecObject to %_IsJSReceiver.

test/mjsunit/regress/regress-995.js

 // Copyright 2010 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
@@ skipping 15 matching lines @@
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 //
 // A number of hydrogen instructions did not correctly compare its
 // data during GVN.
 //
 // Flags: --allow-natives-syntax
 
 // HHasInstance.
 function f(value) {
-  if (%_IsSpecObject(value)) {
+  if (%_IsJSReceiver(value)) {
     if ((%_IsArray(value))) assertTrue(false);
   }
 }
 f(new String("bar"));
 
 // HClassOf.
 function g(value) {
   if (%_ClassOf(value) === 'Date') {
     if (%_ClassOf(value) === 'String') assertTrue(false);
   }
 }
 g(new Date());
 
 // HIsNull.
 function h(value) {
   if (value == null) {
     if (value === null) assertTrue(false);
   }
 }
 h(undefined);