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 07D4E388A809; Wed, 16 Dec 2020 23:26:00 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 07D4E388A809
From: "gabravier at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/89581] Unneeded stack alignment on windows x86
Date: Wed, 16 Dec 2020 23:26:00 +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: 8.2.1
X-Bugzilla-Keywords: missed-optimization
X-Bugzilla-Severity: normal
X-Bugzilla-Who: gabravier at gmail dot com
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: cc
Message-ID: <bug-89581-4-aLQRF3SABD@http.gcc.gnu.org/bugzilla/>
In-Reply-To: <bug-89581-4@http.gcc.gnu.org/bugzilla/>
References: <bug-89581-4@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
X-BeenThere: gcc-bugs@gcc.gnu.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: Gcc-bugs mailing list <gcc-bugs.gcc.gnu.org>
List-Unsubscribe: <https://gcc.gnu.org/mailman/options/gcc-bugs>,
 <mailto:gcc-bugs-request@gcc.gnu.org?subject=unsubscribe>
List-Archive: <https://gcc.gnu.org/pipermail/gcc-bugs/>
List-Post: <mailto:gcc-bugs@gcc.gnu.org>
List-Help: <mailto:gcc-bugs-request@gcc.gnu.org?subject=help>
List-Subscribe: <https://gcc.gnu.org/mailman/listinfo/gcc-bugs>,
 <mailto:gcc-bugs-request@gcc.gnu.org?subject=subscribe>
X-List-Received-Date: Wed, 16 Dec 2020 23:26:01 -0000

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D89581

Gabriel Ravier <gabravier at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |gabravier at gmail dot com

--- Comment #2 from Gabriel Ravier <gabravier at gmail dot com> ---
I can reproduce this, the code generation seems to have gotten much worse,
here's what I get with -O3 -mavx2 :

f:
  vmovq QWORD PTR [rsp-40], xmm0
  vmovq QWORD PTR [rsp-32], xmm1
  vmovapd xmm5, XMMWORD PTR [rsp-40]
  vmovq QWORD PTR [rsp-24], xmm2
  vmovq QWORD PTR [rsp-16], xmm3
  vaddpd xmm4, xmm5, XMMWORD PTR [rsp-24]
  vmovapd XMMWORD PTR [rsp-40], xmm4
  vmovsd xmm1, QWORD PTR [rsp-32]
  vmovsd xmm0, QWORD PTR [rsp-40]
  ret=