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From: "cvs-commit at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/100672] wrong code with vector shift and unary minus
Date: Fri, 25 Jun 2021 09:05:55 +0000 [thread overview]
Message-ID: <bug-100672-4-r7G6SYTKuP@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-100672-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100672
--- Comment #13 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-11 branch has been updated by Richard Biener
<rguenth@gcc.gnu.org>:
https://gcc.gnu.org/g:e0dae9c92aa248c858f682f03ee1b16471297718
commit r11-8652-ge0dae9c92aa248c858f682f03ee1b16471297718
Author: Richard Biener <rguenther@suse.de>
Date: Wed May 19 13:35:07 2021 +0200
middle-end/100672 - fix bogus right shift folding
This fixes the bogus use of TYPE_PRECISION on vector types
from optimizing -((int)x >> 31) into (unsigned)x >> 31.
2021-05-19 Richard Biener <rguenther@suse.de>
PR middle-end/100672
* fold-const.c (fold_negate_expr_1): Use element_precision.
(negate_expr_p): Likewise.
* gcc.dg/torture/pr100672.c: New testcase.
(cherry picked from commit 8d51039cb7c807ed84ff7df5416a1e3ba07a5e63)
next prev parent reply other threads:[~2021-06-25 9:05 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-19 10:30 [Bug tree-optimization/100672] New: " zsojka at seznam dot cz
2021-05-19 10:32 ` [Bug tree-optimization/100672] " zsojka at seznam dot cz
2021-05-19 11:23 ` rguenth at gcc dot gnu.org
2021-05-19 11:26 ` rguenth at gcc dot gnu.org
2021-05-19 11:29 ` rguenth at gcc dot gnu.org
2021-05-19 11:32 ` rguenth at gcc dot gnu.org
2021-05-19 11:33 ` [Bug middle-end/100672] " rguenth at gcc dot gnu.org
2021-05-19 11:44 ` zsojka at seznam dot cz
2021-05-19 11:54 ` rguenth at gcc dot gnu.org
2021-05-19 11:56 ` zsojka at seznam dot cz
2021-05-19 12:00 ` zsojka at seznam dot cz
2021-05-19 13:41 ` cvs-commit at gcc dot gnu.org
2021-05-19 13:41 ` rguenth at gcc dot gnu.org
2021-06-25 9:05 ` cvs-commit at gcc dot gnu.org [this message]
2021-11-09 13:05 ` cvs-commit at gcc dot gnu.org
2021-11-09 13:45 ` cvs-commit at gcc dot gnu.org
2021-11-09 13:45 ` rguenth at gcc dot gnu.org
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