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 B319B3858D20; Fri,  8 Sep 2023 02:11:50 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org B319B3858D20
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org;
	s=default; t=1694139110;
	bh=yB9bSWOzESggsYXmKERPUtwSnT6Z1vkRqIxTncL5usw=;
	h=From:To:Subject:Date:In-Reply-To:References:From;
	b=GtJZf5os+TVZ5FSqnOJ0/IM44Zkv6CcQMD6tUE7SiF9VdNnfdNpsvMQb3uoCBATrc
	 uw9yoyiAS8KkPUVtUVMUzBaUj64TxVQA+KcC2e5PoyTKdNhenF6t/bbOtApe5kvZwq
	 ip2k/Ti/IeuFfZQFEEjDU6SPX5GUiwvQmvS1AV3I=
From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/111332] Using GCC7.3.0 and GCC10.3.0 to compile the same
 test case, assembler file instructions are different and performance fallback
 is obvious.
Date: Fri, 08 Sep 2023 02:11:50 +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: 10.3.0
X-Bugzilla-Keywords: 
X-Bugzilla-Severity: normal
X-Bugzilla-Who: pinskia 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: ---
X-Bugzilla-Flags: 
X-Bugzilla-Changed-Fields: cf_known_to_work cf_known_to_fail
Message-ID: <bug-111332-4-4IF6rtAOAY@http.gcc.gnu.org/bugzilla/>
In-Reply-To: <bug-111332-4@http.gcc.gnu.org/bugzilla/>
References: <bug-111332-4@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=3D111332

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
      Known to work|                            |6.4.0
      Known to fail|                            |7.3.0, 7.5.0, 8.5.0, 9.5.0

--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
GCC 11+ produces:
.L3:
        vmovdqu (%rsi), %ymm2
        vmovdqu 32(%rsi), %ymm1
        subq    $-128, %rdi
        subq    $-128, %rsi
        vmovdqu -64(%rsi), %ymm0
        vmovdqu -32(%rsi), %ymm3
        vmovdqu %ymm2, -128(%rdi)
        vmovdqu %ymm3, -32(%rdi)
        vmovdqu %ymm1, -96(%rdi)
        vmovdqu %ymm0, -64(%rdi)
        cmpq    %rax, %rdi
        jne     .L3

Which is the best code ...=