--- old/src/hotspot/os_cpu/aix_ppc/atomic_aix_ppc.hpp	2019-11-21 11:54:47.912576091 +0100
+++ new/src/hotspot/os_cpu/aix_ppc/atomic_aix_ppc.hpp	2019-11-21 11:54:47.656571761 +0100
@@ -232,9 +232,9 @@
 
 template<>
 template<typename T>
-inline T Atomic::PlatformCmpxchg<1>::operator()(T exchange_value,
-                                                T volatile* dest,
+inline T Atomic::PlatformCmpxchg<1>::operator()(T volatile* dest,
                                                 T compare_value,
+                                                T exchange_value,
                                                 atomic_memory_order order) const {
   STATIC_ASSERT(1 == sizeof(T));
 
@@ -302,9 +302,9 @@
 
 template<>
 template<typename T>
-inline T Atomic::PlatformCmpxchg<4>::operator()(T exchange_value,
-                                                T volatile* dest,
+inline T Atomic::PlatformCmpxchg<4>::operator()(T volatile* dest,
                                                 T compare_value,
+                                                T exchange_value,
                                                 atomic_memory_order order) const {
   STATIC_ASSERT(4 == sizeof(T));
 
@@ -352,9 +352,9 @@
 
 template<>
 template<typename T>
-inline T Atomic::PlatformCmpxchg<8>::operator()(T exchange_value,
-                                                T volatile* dest,
+inline T Atomic::PlatformCmpxchg<8>::operator()(T volatile* dest,
                                                 T compare_value,
+                                                T exchange_value,
                                                 atomic_memory_order order) const {
   STATIC_ASSERT(8 == sizeof(T));