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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/107467] [12/13 Regression] Miscompilation involing -Os , -flto and -fno-strict-aliasing since r12-656-ga564da506f52be66
Date: Fri, 13 Jan 2023 11:47:40 +0000 [thread overview]
Message-ID: <bug-107467-4-AUCxW322fi@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-107467-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107467
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Last reconfirmed|2022-10-30 00:00:00 |2023-1-13
Priority|P3 |P2
--- Comment #8 from Richard Biener <rguenth at gcc dot gnu.org> ---
> diff -u a.ltrans0.ltrans.115t.vrp1 a.ltrans0.ltrans.116t.dse2
...
__attribute__((noinline, optimize ("strict-aliasing")))
bool clashy.isra ()
{
@@ -90,8 +64,6 @@
bool _1;
<bb 2> [local count: 1073741824]:
- D.5191 = get_const.isra ();
- D.5190 = get_const.isra ();
_1 = compare_pairs (&D.5190, &D.5191);
so it's ICFed compare_pairs having modref TBAA info that makes the
stores dead. I suppose ICF needs to reset / alter the modref summaries?
next prev parent reply other threads:[~2023-01-13 11:47 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-10-30 22:10 [Bug translation/107467] New: Miscompilation involing -Os , -flto and -fno-strict-aliasing volker.weissmann at gmx dot de
2022-10-30 23:22 ` [Bug tree-optimization/107467] " pinskia at gcc dot gnu.org
2022-10-30 23:36 ` pinskia at gcc dot gnu.org
2022-10-30 23:38 ` [Bug tree-optimization/107467] [12/13 Regression] " pinskia at gcc dot gnu.org
2022-10-30 23:39 ` pinskia at gcc dot gnu.org
2022-10-30 23:39 ` pinskia at gcc dot gnu.org
2022-11-05 10:29 ` rguenth at gcc dot gnu.org
2022-11-21 13:23 ` marxin at gcc dot gnu.org
2022-12-28 10:07 ` marxin at gcc dot gnu.org
2023-01-04 17:29 ` [Bug tree-optimization/107467] [12/13 Regression] Miscompilation involing -Os , -flto and -fno-strict-aliasing since r12-656-ga564da506f52be66 hubicka at gcc dot gnu.org
2023-01-13 11:47 ` rguenth at gcc dot gnu.org [this message]
2023-01-13 22:08 ` hubicka at ucw dot cz
2023-05-08 12:25 ` [Bug tree-optimization/107467] [12/13/14 " rguenth at gcc dot gnu.org
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