diff -r b4ce4e9eb97d -r 085b304a1cc5 src/share/vm/opto/c2_globals.hpp
--- a/src/share/vm/opto/c2_globals.hpp	Thu Mar 13 10:18:59 2014 -0700
+++ b/src/share/vm/opto/c2_globals.hpp	Thu Jan 23 12:08:28 2014 +0100
@@ -637,7 +637,7 @@
   diagnostic(bool, OptimizeExpensiveOps, true,                              \
           "Find best control for expensive operations")                     \
                                                                             \
-  experimental(bool, UseMathExactIntrinsics, false,                         \
+  product(bool, UseMathExactIntrinsics, true,                               \
           "Enables intrinsification of various java.lang.Math functions")   \
                                                                             \
   experimental(bool, ReplaceInParentMaps, false,                            \