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 09CDC3857C5E; Thu,  7 Mar 2024 14:41:18 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 09CDC3857C5E
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org;
	s=default; t=1709822478;
	bh=AKTCI5T6HJxQ0gewLuq2+qGb1eGms6ICX/LTgOpunls=;
	h=From:To:Subject:Date:From;
	b=aQEl5kQj5MuF+DTiQm1GdlD1eYrxcz4Dr1XPAczroAu5uSYMLfwJQUAbTGNiiNZd3
	 tarQj+uASS+sFKoFoKC7/jqlO5j1+eieVDjGBddk8GaaV0fLiSFSC50cTRwocJcUto
	 A+mqXGxDN9MLw9fnULF5d/B2madCaGyEpNxw02nw=
From: "pheeck at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/114268] New: [14 Regression] 5% exec time
 regression in 454.calculix on Aarch64
Date: Thu, 07 Mar 2024 14:41:17 +0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: new
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: gcc
X-Bugzilla-Component: tree-optimization
X-Bugzilla-Version: 14.0
X-Bugzilla-Keywords: missed-optimization, needs-bisection
X-Bugzilla-Severity: normal
X-Bugzilla-Who: pheeck 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: bug_id short_desc product version bug_status
 keywords bug_severity priority component assigned_to reporter blocked
 target_milestone cf_gcchost cf_gcctarget
Message-ID: <bug-114268-4@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=3D114268

            Bug ID: 114268
           Summary: [14 Regression] 5% exec time regression in
                    454.calculix on Aarch64
           Product: gcc
           Version: 14.0
            Status: UNCONFIRMED
          Keywords: missed-optimization, needs-bisection
          Severity: normal
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: pheeck at gcc dot gnu.org
            Blocks: 26163
  Target Milestone: ---
              Host: aarch64-gnu-linux
            Target: aarch64-gnu-linux

As seen on the graph here

https://lnt.opensuse.org/db_default/v4/SPEC/graph?plot.0=3D579.170.0

between

g:e42287eaed2c93f1
and
g:4d9da4199d1cc067

we detected a 5% exec time slowdown of the 454.calculix 2006 SPEC benchmark
with the cmdline options -O2 -march=3Dnative -flto on our aarch64 machine (=
ampere
altra).


Referenced Bugs:

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D26163
[Bug 26163] [meta-bug] missed optimization in SPEC (2k17, 2k and 2k6 and 95=
)=