--- old/src/share/vm/oops/oop.inline.hpp	2017-08-17 19:25:48.109481348 -0400
+++ new/src/share/vm/oops/oop.inline.hpp	2017-08-17 19:25:47.993475398 -0400
@@ -94,7 +94,7 @@
 }
 
 markOop oopDesc::cas_set_mark(markOop new_mark, markOop old_mark) {
-  return (markOop) Atomic::cmpxchg_ptr(new_mark, &_mark, old_mark);
+  return Atomic::cmpxchg(new_mark, &_mark, old_mark);
 }
 
 void oopDesc::init_mark() {
@@ -408,14 +408,14 @@
     narrowOop val = encode_heap_oop(exchange_value);
     narrowOop cmp = encode_heap_oop(compare_value);
 
-    narrowOop old = (narrowOop) Atomic::cmpxchg(val, (narrowOop*)dest, cmp);
+    narrowOop old = Atomic::cmpxchg(val, (narrowOop*)dest, cmp);
     // decode old from T to oop
     return decode_heap_oop(old);
   } else {
     if (prebarrier) {
       update_barrier_set_pre((oop*)dest, exchange_value);
     }
-    return (oop)Atomic::cmpxchg_ptr(exchange_value, (oop*)dest, compare_value);
+    return Atomic::cmpxchg(exchange_value, (oop*)dest, compare_value);
   }
 }
 
@@ -619,7 +619,7 @@
   assert(sizeof(markOop) == sizeof(intptr_t), "CAS below requires this.");
 
   while (!oldMark->is_marked()) {
-    curMark = (markOop)Atomic::cmpxchg_ptr(forwardPtrMark, &_mark, oldMark);
+    curMark = Atomic::cmpxchg(forwardPtrMark, &_mark, oldMark);
     assert(is_forwarded(), "object should have been forwarded");
     if (curMark == oldMark) {
       return NULL;