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diff src/cpu/sparc/vm/vm_version_sparc.cpp @ 6795:7eca5de9e0b6

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7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement() Summary: use shorter instruction sequences for atomic add and atomic exchange when possible. Reviewed-by: kvn, jrose
author roland
date Thu, 20 Sep 2012 16:49:17 +0200
parents f99a36499b8c
children 3a327d0b8586
line wrap: on
line diff
--- a/src/cpu/sparc/vm/vm_version_sparc.cpp	Wed Sep 19 16:50:26 2012 -0700
+++ b/src/cpu/sparc/vm/vm_version_sparc.cpp	Thu Sep 20 16:49:17 2012 +0200
@@ -96,6 +96,7 @@
   UseSSE = 0; // Only on x86 and x64
 
   _supports_cx8 = has_v9();
+  _supports_atomic_getset4 = true; // swap instruction
 
   if (is_niagara()) {
     // Indirect branch is the same cost as direct