From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gcc-bugzilla@gcc.gnu.org>
Received: by sourceware.org (Postfix, from userid 48)
	id B75FD385DC0B; Fri, 21 Jul 2023 17:38:49 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org B75FD385DC0B
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org;
	s=default; t=1689961129;
	bh=EiU84t6Ch18+KMWqvqkCPT/oMnNCBC073nw/JlWrCck=;
	h=From:To:Subject:Date:In-Reply-To:References:From;
	b=qxxFFqHQcN5Pp4FkivXCaIqnVla0dQW1DaSZK5l58kfker9B71NUbo52XapDpnX8j
	 mjeSx11+IppUjjfnVkCIMQQdNns9kQ6yrqRrBUsx1kW8iLZwEkQrKe3GSsh+QOc2Fa
	 5nLgdbHD/F/umoxLq6hyf6CAncvcbGQC2FRxFRQg=
From: "cvs-commit at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/110727] [14 Regression]
 gcc.target/aarch64/sve/aarch64-sve.exp has two new failures since commit
 061f74c0673
Date: Fri, 21 Jul 2023 17:38:49 +0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: changed
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: gcc
X-Bugzilla-Component: target
X-Bugzilla-Version: 14.0
X-Bugzilla-Keywords: testsuite-fail
X-Bugzilla-Severity: normal
X-Bugzilla-Who: cvs-commit at gcc dot gnu.org
X-Bugzilla-Status: UNCONFIRMED
X-Bugzilla-Resolution: 
X-Bugzilla-Priority: P3
X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org
X-Bugzilla-Target-Milestone: 14.0
X-Bugzilla-Flags: 
X-Bugzilla-Changed-Fields: 
Message-ID: <bug-110727-4-PgVP5KcnyD@http.gcc.gnu.org/bugzilla/>
In-Reply-To: <bug-110727-4@http.gcc.gnu.org/bugzilla/>
References: <bug-110727-4@http.gcc.gnu.org/bugzilla/>
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable
X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/
Auto-Submitted: auto-generated
MIME-Version: 1.0
List-Id: <gcc-bugs.sourceware.org>

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D110727

--- Comment #1 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Jan Hubicka <hubicka@gcc.gnu.org>:

https://gcc.gnu.org/g:a31ef26b056d0c4f0a9f08b6eb81456ea257298e

commit r14-2716-ga31ef26b056d0c4f0a9f08b6eb81456ea257298e
Author: Jan Hubicka <jh@suse.cz>
Date:   Fri Jul 21 19:38:26 2023 +0200

    Avoid scaling flat loop profiles of vectorized loops

    As discussed, when vectorizing loop with static profile, it is not alwa=
ys
good idea
    to divide the header frequency by vectorization factor because the prof=
ile
may
    not realistically represent the expected number of iterations.  Since in
such cases
    we default to relatively low iteration counts (based on average for
spec2k17), this
    will make vectorized loop body look cold.

    This patch makes vectorizer to look for flat profiles and only possibly
reduce the
    profile by known upper bound on iteration counts.

    gcc/ChangeLog:

            PR target/110727
            * tree-vect-loop.cc (scale_profile_for_vect_loop): Avoid scaling
flat
            profiles by vectorization factor.
            (vect_transform_loop): Check for flat profiles.=