src/hotspot/share/utilities/bitMap.inline.hpp

@@ -70,11 +70,11 @@
   do {
     const bm_word_t new_val = old_val | mask;
     if (new_val == old_val) {
       return false;     // Someone else beat us to it.
     }
-    const bm_word_t cur_val = Atomic::cmpxchg(new_val, addr, old_val, memory_order);
+    const bm_word_t cur_val = Atomic::cmpxchg(addr, old_val, new_val, memory_order);
     if (cur_val == old_val) {
       return true;      // Success.
     }
     old_val = cur_val;  // The value changed, try again.
   } while (true);

@@ -89,11 +89,11 @@
   do {
     const bm_word_t new_val = old_val & mask;
     if (new_val == old_val) {
       return false;     // Someone else beat us to it.
     }
-    const bm_word_t cur_val = Atomic::cmpxchg(new_val, addr, old_val, memory_order);
+    const bm_word_t cur_val = Atomic::cmpxchg(addr, old_val, new_val, memory_order);
     if (cur_val == old_val) {
       return true;      // Success.
     }
     old_val = cur_val;  // The value changed, try again.
   } while (true);