Where they happened. How many times they happened. Patch forthcoming.
Created attachment 178441 [details] sample profiling session Shows a sample profiling session where I investigate a code block that has a lot of exits and recompilations. Note how I can see all of the exits that happened just by looking at the bytecode. This is so full of win, I'm really proud of myself. Then I look at the most recent DFG compilation and see that we're exiting because an "undefined" is flowing into something that we statically assume to be a cell.
Created attachment 178442 [details] the patch This will cause some of the build systems to puke. I'll fix that shortly.
Created attachment 178443 [details] the patch Fix things maybe
Created attachment 178445 [details] the patch Rebased.
Created attachment 178446 [details] sample profiling session
Comment on attachment 178445 [details] the patch Attachment 178445 [details] did not pass qt-ews (qt): Output: http://queues.webkit.org/results/15238252
Comment on attachment 178445 [details] the patch Attachment 178445 [details] did not pass qt-wk2-ews (qt): Output: http://queues.webkit.org/results/15242047
Created attachment 178448 [details] the patch More build system fixes.
Attachment 178448 [details] did not pass style-queue: Failed to run "['Tools/Scripts/check-webkit-style', '--diff-files', u'Source/JavaScriptCore/CMakeLists.txt', u'S..." exit_code: 1 Source/JavaScriptCore/bytecode/ExitKind.h:46: The parameter name "kind" adds no information, so it should be removed. [readability/parameter_name] [5] Source/JavaScriptCore/bytecode/ExitKind.h:47: The parameter name "kind" adds no information, so it should be removed. [readability/parameter_name] [5] Total errors found: 2 in 29 files If any of these errors are false positives, please file a bug against check-webkit-style.
Created attachment 178449 [details] the patch Fix style
Created attachment 178451 [details] the patch ungimp the gtk
Landed in http://trac.webkit.org/changeset/137175