On 09/06/2011 07:33 PM, Christian Thalinger wrote: > On Sep 6, 2011, at 5:51 PM, Charles Oliver Nutter wrote: > >> On Tue, Sep 6, 2011 at 10:39 AM, Rémi Forax<fo...@univ-mlv.fr> wrote: >>> Yes, but don't forget that PHP.reboot has no overflow check. >> Did we ever figure out if it's possible to trick Hotspot into doing a >> JO instead of the raw bit-level operations? John/Christian/Tom: what >> would it take to get HS to "know" that we're doing an integer >> overflow-after-maths check and do the (faster?) JO? > We already talked a bit about that some while ago. I think matching that > double-xor-trick (or whatever it's called) is too risky. A JDK method that > does the check (and the math?) would be nice so we can intrinsify it. GWT > would fit here. > > Btw. what means JO?
jump on overflow, i guess. > > -- Christian Rémi _______________________________________________ mlvm-dev mailing list mlvm-dev@openjdk.java.net http://mail.openjdk.java.net/mailman/listinfo/mlvm-dev
