151841 2015-12-03 17:42:54 -0800 Add an option to emit instructions validating exceptions in the DFG rather than always emiting them. 2015-12-04 10:46:02 -0800 1 1 1 Unclassified WebKit New Bugs WebKit Nightly Build Unspecified Unspecified RESOLVED FIXED P2 Normal --- 1 keith_miller keith_miller commit-queue mark.lam msaboff saam oldest_to_newest 1146152 0 keith_miller 2015-12-03 17:42:54 -0800 Add an option to emit instructions validating exceptions in the DFG rather than always emiting them. 1146154 1 266582 keith_miller 2015-12-03 17:46:25 -0800 Created attachment 266582 Patch 1146158 2 266582 msaboff 2015-12-03 18:07:13 -0800 Comment on attachment 266582 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=266582&action=review I see that Saam added these JIT asserts to help find what operations emit exception checks. Given that you have the desire to turn them off by default, it seems to me that it makes more sense to eliminated them altogether. Want to hear what others (Saam) think. > Source/JavaScriptCore/runtime/Options.h:329 > + v(bool, validateExceptionHandlingInDFG, false, nullptr) \ Add a description string for the option. 1146168 3 keith_miller 2015-12-03 18:32:04 -0800 > I see that Saam added these JIT asserts to help find what operations emit > exception checks. Given that you have the desire to turn them off by > default, it seems to me that it makes more sense to eliminated them > altogether. Want to hear what others (Saam) think. I spoke with Saam offline and he mirrored your opinion. Instead, I'll have the option on by default in debug builds. > > Source/JavaScriptCore/runtime/Options.h:329 > > + v(bool, validateExceptionHandlingInDFG, false, nullptr) \ > > Add a description string for the option. Fixed. 1146179 4 266589 keith_miller 2015-12-03 19:33:31 -0800 Created attachment 266589 Patch 1146204 5 266589 saam 2015-12-03 21:23:40 -0800 Comment on attachment 266589 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=266589&action=review r=me > Source/JavaScriptCore/jit/AssemblyHelpers.h:1005 > + void jitReleaseAssertNoException(); We could also call this crashIfVMHasException or something like that. 1146230 6 saam 2015-12-04 00:44:18 -0800 On second thought, I do like the releaseAssert name 1146331 7 266589 commit-queue 2015-12-04 10:45:59 -0800 Comment on attachment 266589 Patch Clearing flags on attachment: 266589 Committed r193424: <http://trac.webkit.org/changeset/193424> 1146332 8 commit-queue 2015-12-04 10:46:02 -0800 All reviewed patches have been landed. Closing bug. 266582 2015-12-03 17:46:25 -0800 2015-12-03 19:33:29 -0800 Patch bug-151841-20151203174600.patch text/plain 2234 keith_miller U3VidmVyc2lvbiBSZXZpc2lvbjogMTkyNTk2CmRpZmYgLS1naXQgYS9Tb3VyY2UvSmF2YVNjcmlw dENvcmUvQ2hhbmdlTG9nIGIvU291cmNlL0phdmFTY3JpcHRDb3JlL0NoYW5nZUxvZwppbmRleCA0 NzcwODdlM2UxMjA0ODU4ZDYyYTI5Zjk0NWIyMjc5OWYxMWYxOTdjLi41ZjZkNWFiYzgwY2UyMjE2 OTRlZWNiN2U3MWRjMDAzMjM2NTY1YWI5IDEwMDY0NAotLS0gYS9Tb3VyY2UvSmF2YVNjcmlwdENv cmUvQ2hhbmdlTG9nCisrKyBiL1NvdXJjZS9KYXZhU2NyaXB0Q29yZS9DaGFuZ2VMb2cKQEAgLTEs MyArMSwxNCBAQAorMjAxNS0xMi0wMyAgS2VpdGggTWlsbGVyICA8a2VpdGhfbWlsbGVyQGFwcGxl LmNvbT4KKworICAgICAgICBBZGQgYW4gb3B0aW9uIHRvIGVtaXQgaW5zdHJ1Y3Rpb25zIHZhbGlk YXRpbmcgZXhjZXB0aW9ucyBpbiB0aGUgREZHIHJhdGhlciB0aGFuIGFsd2F5cyBlbWl0aW5nIHRo ZW0uCisgICAgICAgIGh0dHBzOi8vYnVncy53ZWJraXQub3JnL3Nob3dfYnVnLmNnaT9pZD0xNTE4 NDEKKworICAgICAgICBSZXZpZXdlZCBieSBOT0JPRFkgKE9PUFMhKS4KKworICAgICAgICAqIGRm Zy9ERkdTcGVjdWxhdGl2ZUpJVC5jcHA6CisgICAgICAgIChKU0M6OkRGRzo6U3BlY3VsYXRpdmVK 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