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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/94130] [8/9/10 Regression] Unintended result with optimization option when assigning two structures, memset and 0
Date: Wed, 11 Mar 2020 07:55:02 +0000 [thread overview]
Message-ID: <bug-94130-4-oxl7z16sNf@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-94130-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94130
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |law at gcc dot gnu.org,
| |rguenth at gcc dot gnu.org
Status|UNCONFIRMED |NEW
Target Milestone|--- |8.5
Last reconfirmed| |2020-03-11
Known to work| |6.5.0
Ever confirmed|0 |1
Priority|P3 |P2
Summary|Unintended result with |[8/9/10 Regression]
|optimization option when |Unintended result with
|assigning two structures, |optimization option when
|memset and 0 |assigning two structures,
| |memset and 0
Known to fail| |7.5.0, 8.3.0, 9.2.0
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Confirmed. DSE prunes the memset from the wrong side it seems. Jeff?
Breaks with -O -fno-inline already, fixed with -fno-tree-dse.
next prev parent reply other threads:[~2020-03-11 7:55 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-11 1:47 [Bug c/94130] New: " minzkn at minzkn dot com
2020-03-11 7:55 ` rguenth at gcc dot gnu.org [this message]
2020-03-11 7:58 ` [Bug tree-optimization/94130] [8/9/10 Regression] " rguenth at gcc dot gnu.org
2020-03-11 12:05 ` jakub at gcc dot gnu.org
2020-03-11 12:15 ` jakub at gcc dot gnu.org
2020-03-11 12:17 ` jakub at gcc dot gnu.org
2020-03-11 12:21 ` jakub at gcc dot gnu.org
2020-03-11 13:06 ` jakub at gcc dot gnu.org
2020-03-12 10:14 ` [Bug tree-optimization/94130] [8/9 " jakub at gcc dot gnu.org
2020-03-12 12:38 ` marxin at gcc dot gnu.org
2020-03-17 18:57 ` cvs-commit at gcc dot gnu.org
2020-03-17 19:14 ` [Bug tree-optimization/94130] [8 " jakub at gcc dot gnu.org
2020-09-17 14:24 ` cvs-commit at gcc dot gnu.org
2020-09-17 17:18 ` jakub at gcc dot gnu.org
2021-03-06 18:10 ` jakub at gcc dot gnu.org
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