140609 2015-01-19 01:49:00 -0800 [EFL][GTK] Stop compiling with fno-omit-frame-pointer, -fno-tree-dce 2015-02-26 05:00:59 -0800 1 1 1 Unclassified WebKit New Bugs 528+ (Nightly build) Unspecified Unspecified RESOLVED FIXED P2 Normal --- 142042 1 zan zan akiss ggaren gyuyoung.kim msaboff ossy svillar oldest_to_newest 1062297 0 zan 2015-01-19 01:49:00 -0800 [EFL][GTK] Stop compiling with -fno-tree-dce 1062300 1 244883 zan 2015-01-19 01:52:53 -0800 Created attachment 244883 Patch 1062303 2 zan 2015-01-19 01:55:34 -0800 The main implication is that we insist on using the latest releases from the last three stable series of the GCC compiler. I tested all three, and there were no problems. -fno-omit-frame-pointer could perhaps be removed as well, since without it there are still no problems. I'd like to check it on ARM before that, though. (-fno-tree-dce was specific to x86-64.) The origin of all this is bug #127777. 1062304 3 ossy 2015-01-19 01:57:42 -0800 Great news, let me check it on EFL. 1062316 4 zan 2015-01-19 02:26:02 -0800 The tested versions of GCC were: - 4.7.4 - 4.8.4 - 4.9.2 1062317 5 ossy 2015-01-19 02:29:18 -0800 (In reply to comment #2) > -fno-omit-frame-pointer could perhaps be removed as well, since without it > there are still no problems. I'd like to check it on ARM before that, > though. (-fno-tree-dce was specific to x86-64.) > > The origin of all this is bug #127777. Can we really remove -fno-omit-frame-pointer? I thought JSC still relies on it. ( https://bugs.webkit.org/show_bug.cgi?id=127777#c15 ) Was something changed in JSC related to this issue? 1062325 6 ossy 2015-01-19 03:09:21 -0800 I tested EFL on Ubuntu 14.04 X86_64 with the stock GCC 4.8.2, all tests pass after removing -fno-omit-frame-pointer and -fno-tree-dce . ARM and Thumb2 testing are still in progress. 1062329 7 ossy 2015-01-19 04:30:27 -0800 (In reply to comment #6) > ARM and Thumb2 testing are still in progress. Tests are finished, all tests passed on ARM and Thumb2, (except the flakey timeouts on Thumb2, it wasn't changed) we can remove -fno-omit-frame-pointer and -fno-tree-dce too. 1062339 8 zan 2015-01-19 05:12:38 -0800 Awesome, thanks for helping out! In the future if problems arise in this area, we would ideally disable optimizations only for the affected architectures. 1062340 9 244898 zan 2015-01-19 05:19:00 -0800 Created attachment 244898 Patch 1062343 10 244898 ossy 2015-01-19 05:37:39 -0800 Comment on attachment 244898 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=244898&action=review r=me > Source/cmake/OptionsEfl.cmake:263 > # Push of rbp is needed after JSC JIT uses CStack. Please remove this comment before landing. 1062344 11 svillar 2015-01-19 05:41:38 -0800 (In reply to comment #2) > The main implication is that we insist on using the latest releases from the > last three stable series of the GCC compiler. I tested all three, and there > were no problems. > > -fno-omit-frame-pointer could perhaps be removed as well, since without it > there are still no problems. I'd like to check it on ARM before that, > though. (-fno-tree-dce was specific to x86-64.) This is important enough to be sent to the list IMO. 1062357 12 ossy 2015-01-19 06:55:59 -0800 I played a little bit with bisecting which revisions fixed the issue. Without -fno-omit-frame-pointer and -fno-tree-dce options, there were ~ 1800-2000 failures previously, but https://trac.webkit.org/changeset/173282 fixed most of the failures, and https://trac.webkit.org/changeset/173298 fixed the remaining 78 failures on x86_64. I think these changes fixed the issues on ARM and Thumb2 too, but I haven't checked yet, only the ToT revision. It would be better to reference to this changesets in the changelog instead of unlikely GCC changes/fixed. 1062383 13 ossy 2015-01-19 10:16:17 -0800 (In reply to comment #12) > I played a little bit with bisecting which revisions fixed the issue. > > Without -fno-omit-frame-pointer and -fno-tree-dce options, there were > ~ 1800-2000 failures previously, but https://trac.webkit.org/changeset/173282 > fixed most of the failures, and https://trac.webkit.org/changeset/173298 > fixed > the remaining 78 failures on x86_64. I think these changes fixed the issues > on ARM and Thumb2 too, but I haven't checked yet, only the ToT revision. > > It would be better to reference to this changesets in the changelog > instead of unlikely GCC changes/fixed. I validated, r173282 fixed most of the failures on ARM and Thumb2 too, and r173298 fixed the remaining failures. 1063325 14 ossy 2015-01-22 01:42:50 -0800 Can we remove the -Wno-error=uninitialized workaround too from here? http://trac.webkit.org/browser/trunk/Source/cmake/WebKitHelpers.cmake?rev=172894#L31 1063329 15 ossy 2015-01-22 02:19:13 -0800 (In reply to comment #14) > Can we remove the -Wno-error=uninitialized workaround too from here? > > http://trac.webkit.org/browser/trunk/Source/cmake/WebKitHelpers. > cmake?rev=172894#L31 I checked, we can remove -Wno-error=uninitialized and -Wno-error=literal-suffix too. 1063684 16 ossy 2015-01-23 08:49:03 -0800 Zan, could you land it in the near future? 1064114 17 zan 2015-01-26 01:36:59 -0800 (In reply to comment #15) > (In reply to comment #14) > > Can we remove the -Wno-error=uninitialized workaround too from here? > > > > http://trac.webkit.org/browser/trunk/Source/cmake/WebKitHelpers. > > cmake?rev=172894#L31 > > I checked, we can remove -Wno-error=uninitialized and > -Wno-error=literal-suffix too. In a separate bug, please. 1064117 18 ossy 2015-01-26 01:44:35 -0800 (In reply to comment #17) > (In reply to comment #15) > > (In reply to comment #14) > > > Can we remove the -Wno-error=uninitialized workaround too from here? > > > > > > http://trac.webkit.org/browser/trunk/Source/cmake/WebKitHelpers. > > > cmake?rev=172894#L31 > > > > I checked, we can remove -Wno-error=uninitialized and > > -Wno-error=literal-suffix too. > > In a separate bug, please. It's ok for me to do it in a separated bug. 1072345 19 ossy 2015-02-26 04:58:28 -0800 Already landed in http://trac.webkit.org/changeset/179110 244883 2015-01-19 01:52:53 -0800 2015-01-19 05:18:53 -0800 Patch bug-140609-20150119015506.patch text/plain 3057 zan SW5kZXg6IENoYW5nZUxvZwo9PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09 PT09PT09PT09PT09PT09PT09PT09PT09PT09Ci0tLSBDaGFuZ2VMb2cJKHJldmlzaW9uIDE3ODY0 MikKKysrIENoYW5nZUxvZwkod29ya2luZyBjb3B5KQpAQCAtMSwzICsxLDE4IEBACisyMDE1LTAx LTE5ICBaYW4gRG9iZXJzZWsgIDx6ZG9iZXJzZWtAaWdhbGlhLmNvbT4KKworICAgICAgICBbRUZM XVtHVEtdIFN0b3AgY29tcGlsaW5nIHdpdGggLWZuby10cmVlLWRjZQorICAgICAgICBodHRwczov L2J1Z3Mud2Via2l0Lm9yZy9zaG93X2J1Zy5jZ2k/aWQ9MTQwNjA5CisKKyAgICAgICAgUmV2aWV3 ZWQgYnkgTk9CT0RZIChPT1BTISkuCisKKyAgICAgICAgVGhlIGxhdGVzdCByZWxlYXNlcyBvZiBH Q0MgdmVyc2lvbnMgNC43LCA0LjggYW5kIDQuOSBhbGwgY29tcGlsZSBhbmQKKyAgICAgICAgcnVu IEpTQyB0ZXN0cyBmaW5lIHdpdGhvdXQgdGhlIC1mbm8tdHJlZS1kY2UgY29tcGlsYXRpb24gZmxh 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