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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)
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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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