public inbox for gcc-bugs@sourceware.org
help / color / mirror / Atom feed
From: "cvs-commit at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/103253] [12 Regression] ICE: Segmentation fault (in convert_mult_to_fma or in vect_recog_mask_conversion_pattern) since r12-5129-g8ed62c929c7c4462
Date: Thu, 18 Nov 2021 11:24:48 +0000 [thread overview]
Message-ID: <bug-103253-4-tx5m3UBg0M@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-103253-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103253
--- Comment #11 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Tamar Christina <tnfchris@gcc.gnu.org>:
https://gcc.gnu.org/g:1a0bce98dcf84dd0a7b3ac67b51ac68758cc7ad0
commit r12-5369-g1a0bce98dcf84dd0a7b3ac67b51ac68758cc7ad0
Author: Tamar Christina <tamar.christina@arm.com>
Date: Thu Nov 18 11:22:11 2021 +0000
middle-end: Fix FMA detection when inspecting gimple which have no LHS.
convert_mult_to_fma assumes that all gimple_assigns have a LHS set. This
assumption is however not true when an IFN is kept around just for the
side-effects. In those situations you have just the IFN and lhs will be
null.
Since there's no LHS, there also can't be any ADD and such it can't be an
FMA
so it's correct to just return early if no LHS.
gcc/ChangeLog:
PR tree-optimization/103253
* tree-ssa-math-opts.c (convert_mult_to_fma): Check for LHS.
gcc/testsuite/ChangeLog:
PR tree-optimization/103253
* gcc.dg/vect/pr103253.c: New test.
next prev parent reply other threads:[~2021-11-18 11:24 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-15 17:05 [Bug tree-optimization/103253] New: [12 Regression] ICE: Segmentation fault (in convert_mult_to_fma) asolokha at gmx dot com
2021-11-15 17:21 ` [Bug tree-optimization/103253] [12 Regression] ICE: Segmentation fault (in convert_mult_to_fma or in vect_recog_mask_conversion_pattern) asolokha at gmx dot com
2021-11-16 8:16 ` [Bug tree-optimization/103253] [12 Regression] ICE: Segmentation fault (in convert_mult_to_fma or in vect_recog_mask_conversion_pattern) since r12-5129-g8ed62c929c7c4462 marxin at gcc dot gnu.org
2021-11-16 8:27 ` asolokha at gmx dot com
2021-11-16 8:42 ` tnfchris at gcc dot gnu.org
2021-11-16 9:02 ` tnfchris at gcc dot gnu.org
2021-11-16 9:32 ` rguenth at gcc dot gnu.org
2021-11-16 9:39 ` tnfchris at gcc dot gnu.org
2021-11-16 9:44 ` rguenther at suse dot de
2021-11-16 10:12 ` tnfchris at gcc dot gnu.org
2021-11-16 10:29 ` rguenther at suse dot de
2021-11-18 11:24 ` cvs-commit at gcc dot gnu.org [this message]
2021-11-18 11:26 ` tnfchris at gcc dot gnu.org
2021-12-13 8:22 ` [Bug tree-optimization/103253] Unused COND_MUL isn't removed by DCE even with -fno-trapping-math tnfchris at gcc dot gnu.org
2022-05-06 8:31 ` jakub at gcc dot gnu.org
2023-05-08 12:23 ` rguenth at gcc dot gnu.org
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=bug-103253-4-tx5m3UBg0M@http.gcc.gnu.org/bugzilla/ \
--to=gcc-bugzilla@gcc.gnu.org \
--cc=gcc-bugs@gcc.gnu.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).