--- old/src/hotspot/os_cpu/bsd_x86/bytes_bsd_x86.inline.hpp	2020-05-01 02:25:42.215778211 -0700
+++ new/src/hotspot/os_cpu/bsd_x86/bytes_bsd_x86.inline.hpp	2020-05-01 02:25:41.895772055 -0700
@@ -85,18 +85,7 @@
 
 #ifdef AMD64
 inline u8 Bytes::swap_u8(u8 x) {
-#ifdef SPARC_WORKS
-  // workaround for SunStudio12 CR6615391
-  __asm__ __volatile__ (
-    "bswapq %0"
-    :"=r" (x)        // output : register 0 => x
-    :"0"  (x)        // input  : x => register 0
-    :"0"             // clobbered register
-  );
-  return x;
-#else
   return bswap_64(x);
-#endif
 }
 #else
 // Helper function for swap_u8