Both of these patches produced speed-ups by themselves: https://bugs.webkit.org/show_bug.cgi?id=65883 https://bugs.webkit.org/show_bug.cgi?id=65949 But when combined, they produce slow-downs. Because the latter one was a bigger speed-up, the former should probably be disabled until the reasons behind the regressions are better understood.
Created attachment 103430 [details] the patch This improves performance on v8-crypto by 20%, bringing us back to where we were before we regressed. It does *not* remove the heap load prediction capability; it merely disables it, making it easier to reenable it if we figure out what is going wrong.
Comment on attachment 103430 [details] the patch Seems like the smart move. Should probably revert properly if we don't get these working well together, but this seems a sensible step for now.
Comment on attachment 103430 [details] the patch Tests pass, ready to land.
Comment on attachment 103430 [details] the patch Clearing flags on attachment: 103430 Committed r92750: <http://trac.webkit.org/changeset/92750>
All reviewed patches have been landed. Closing bug.