From f4463596a4fe4142d84a6d55969999e22f7fcfa5 Mon Sep 17 00:00:00 2001
From: bpittore <unknown>
Date: Fri, 20 Sep 2013 15:06:23 -0400
Subject: [PATCH] 8014911: Should use SUPPORTS_NATIVE_CX8 define to help C/C++
 compiler elide blocks of code Summary: If SUPPORTS_NATIVE_CX8 true then
 supports_cx8() function hard coded to return 'true' Reviewed-by: kvn, twisti,
 dholmes

---
 src/share/vm/runtime/vm_version.hpp | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/share/vm/runtime/vm_version.hpp b/src/share/vm/runtime/vm_version.hpp
index c901b260d..f03b77ca3 100644
--- a/src/share/vm/runtime/vm_version.hpp
+++ b/src/share/vm/runtime/vm_version.hpp
@@ -78,7 +78,13 @@ class Abstract_VM_Version: AllStatic {
   static const char* jre_release_version();
 
   // does HW support an 8-byte compare-exchange operation?
-  static bool supports_cx8()  {return _supports_cx8;}
+  static bool supports_cx8()  {
+#ifdef SUPPORTS_NATIVE_CX8
+    return true;
+#else
+    return _supports_cx8;
+#endif
+  }
   // does HW support atomic get-and-set or atomic get-and-add?  Used
   // to guide intrinsification decisions for Unsafe atomic ops
   static bool supports_atomic_getset4()  {return _supports_atomic_getset4;}
-- 
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