Due to a regression in GCC 4.9, any OpenJDK 8 hotspot built using it was broken [1]. Upstream OpenJDK identified this as being caused by "-fdevirtualize". As a workaround, the "-fno-devirtualize" build flag was added to the java-1.8.0-openjdk spec file. This probably causes a performance regression and should be removed at some point in the future when we are use the regression in GCC 4.9 has been fixed on all architectures that we build on. This bug is just a reminder that the "-fno-devirtualize" flag should be removed at some point. [1] http://mail.openjdk.java.net/pipermail/hotspot-dev/2014-April/013602.html
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This is still present in f23. Re-opening.
(In reply to Andrew John Hughes from comment #3) > This is still present in f23. Re-opening. It was removed in http://pkgs.fedoraproject.org/cgit/java-1.8.0-openjdk.git/commit/?h=f23&id=63a9345099ece333bb3c4c7725f7d19bc47aedd3
Yes, it was my hardening patch that removed it: http://pkgs.fedoraproject.org/cgit/java-1.8.0-openjdk.git/commit/?id=322a6accbb226cdb2682784a1b8b3f3a0e978c91