--- old/src/hotspot/os_cpu/solaris_x86/solaris_x86_64.il	2019-11-21 11:54:09.647928948 +0100
+++ new/src/hotspot/os_cpu/solaris_x86/solaris_x86_64.il	2019-11-21 11:54:09.391924617 +0100
@@ -65,13 +65,13 @@
       addq     %rdi, %rax
       .end
 
-  // Support for jint Atomic::xchg(jint exchange_value, volatile jint* dest).
+  // Support for jint Atomic::xchg(volatile jint* dest, jint exchange_value).
       .inline _Atomic_xchg,2
       xchgl    (%rsi), %edi
       movl     %edi, %eax
       .end
 
-  // Support for jlong Atomic::xchg(jlong exchange_value, volatile jlong* dest).
+  // Support for jlong Atomic::xchg(volatile jlong* dest, jlong exchange_value).
       .inline _Atomic_xchg_long,2
       xchgq    (%rsi), %rdi
       movq     %rdi, %rax