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* [Bug tree-optimization/45883] New: Incorrect store removal when compiling with -fstrict-aliasing @ 2010-10-04 17:02 vegorov at chromium dot org 2010-10-04 22:20 ` [Bug tree-optimization/45883] " rguenth at gcc dot gnu.org ` (2 more replies) 0 siblings, 3 replies; 4+ messages in thread From: vegorov at chromium dot org @ 2010-10-04 17:02 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45883 Summary: Incorrect store removal when compiling with -fstrict-aliasing Product: gcc Version: 4.5.1 Status: UNCONFIRMED Severity: normal Priority: P3 Component: tree-optimization AssignedTo: unassigned@gcc.gnu.org ReportedBy: vegorov@chromium.org Created attachment 21958 --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=21958 testcase When attached test case is compiled with -O1 -fstrict-aliasing GCC removes store to the GlobalObject::ctx_ field. GCC seems to be confused by BitCast<T**> in the Handle<T>::operator* but I see no aliasing violation there. ^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug tree-optimization/45883] Incorrect store removal when compiling with -fstrict-aliasing 2010-10-04 17:02 [Bug tree-optimization/45883] New: Incorrect store removal when compiling with -fstrict-aliasing vegorov at chromium dot org @ 2010-10-04 22:20 ` rguenth at gcc dot gnu.org 2010-10-05 8:47 ` vegorov at chromium dot org 2011-12-22 2:33 ` pinskia at gcc dot gnu.org 2 siblings, 0 replies; 4+ messages in thread From: rguenth at gcc dot gnu.org @ 2010-10-04 22:20 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45883 --- Comment #1 from Richard Guenther <rguenth at gcc dot gnu.org> 2010-10-04 22:20:27 UTC --- Looks related to PR42834 (-fno-builtin-memcpy fixes it) ^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug tree-optimization/45883] Incorrect store removal when compiling with -fstrict-aliasing 2010-10-04 17:02 [Bug tree-optimization/45883] New: Incorrect store removal when compiling with -fstrict-aliasing vegorov at chromium dot org 2010-10-04 22:20 ` [Bug tree-optimization/45883] " rguenth at gcc dot gnu.org @ 2010-10-05 8:47 ` vegorov at chromium dot org 2011-12-22 2:33 ` pinskia at gcc dot gnu.org 2 siblings, 0 replies; 4+ messages in thread From: vegorov at chromium dot org @ 2010-10-05 8:47 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45883 --- Comment #2 from Vyacheslav Egorov <vegorov at chromium dot org> 2010-10-05 08:47:19 UTC --- Richard I can confirm that test case passes when compiled with -O1 -fstrict-aliasing -fno-builtin-memcpy. ^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug tree-optimization/45883] Incorrect store removal when compiling with -fstrict-aliasing 2010-10-04 17:02 [Bug tree-optimization/45883] New: Incorrect store removal when compiling with -fstrict-aliasing vegorov at chromium dot org 2010-10-04 22:20 ` [Bug tree-optimization/45883] " rguenth at gcc dot gnu.org 2010-10-05 8:47 ` vegorov at chromium dot org @ 2011-12-22 2:33 ` pinskia at gcc dot gnu.org 2 siblings, 0 replies; 4+ messages in thread From: pinskia at gcc dot gnu.org @ 2011-12-22 2:33 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45883 Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |RESOLVED Known to work| |4.4.3, 4.7.0 Resolution| |DUPLICATE --- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> 2011-12-22 02:28:15 UTC --- Fixed. *** This bug has been marked as a duplicate of bug 42834 *** ^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2011-12-22 2:30 UTC | newest] Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2010-10-04 17:02 [Bug tree-optimization/45883] New: Incorrect store removal when compiling with -fstrict-aliasing vegorov at chromium dot org 2010-10-04 22:20 ` [Bug tree-optimization/45883] " rguenth at gcc dot gnu.org 2010-10-05 8:47 ` vegorov at chromium dot org 2011-12-22 2:33 ` pinskia at gcc dot gnu.org
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