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 3DD463858403; Mon, 27 Sep 2021 02:01:13 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 3DD463858403
From: "crazylht at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/102473] [12 Regression] 521.wrf_r 5% slower at -Ofast
 and generic x86_64 tuning after r12-3426-g8f323c712ea76c
Date: Mon, 27 Sep 2021 02:01:12 +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: 12.0
X-Bugzilla-Keywords: 
X-Bugzilla-Severity: normal
X-Bugzilla-Who: crazylht at gmail dot com
X-Bugzilla-Status: NEW
X-Bugzilla-Resolution: 
X-Bugzilla-Priority: P3
X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org
X-Bugzilla-Target-Milestone: 12.0
X-Bugzilla-Flags: 
X-Bugzilla-Changed-Fields: 
Message-ID: <bug-102473-4-Hdilv9xQSX@http.gcc.gnu.org/bugzilla/>
In-Reply-To: <bug-102473-4@http.gcc.gnu.org/bugzilla/>
References: <bug-102473-4@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: Mon, 27 Sep 2021 02:01:13 -0000

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D102473

--- Comment #6 from Hongtao.liu <crazylht at gmail dot com> ---

>=20
> | Symbol                                      | sys lib | Before | After =
|=20
> diff |     % |
> |---------------------------------------------+---------+--------+-------=
+---
> ----+-------|
> | __logf_fma                                  | yes     |  68882 | 68940 =
|=20=20
> +58 | +0.08 |
> | __atanf                                     | yes     |  66664 | 66196 =
|=20
> -468 | -0.70 |
> | __module_advect_em_MOD_advect_scalar_pd     | no      |  62286 | 62348 =
|=20=20
> +62 | +0.10 |
> | __powf_fma                                  | yes     |  56213 | 56127 =
|=20=20
> -86 | -0.15 |
> | __module_mp_wsm5_MOD_nislfv_rain_plm        | no      |  46990 | 48340 |
> +1350 | +2.87 |

Does it means cycles?=20
Vtune data show __module_mp_wsm5_MOD_nislfv_rain_plm has less instructions
retired and clocksticks after my commit. And the regression comes from
libc-2.31.so which shoud be the same.=