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 3D810385840F; Mon, 18 Jul 2022 17:32:26 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 3D810385840F
From: "mpolacek at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug testsuite/106345] New: Some ppc64le tests fail with
 -mcpu=power9 -mtune=power9
Date: Mon, 18 Jul 2022 17:32:26 +0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: new
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: gcc
X-Bugzilla-Component: testsuite
X-Bugzilla-Version: 12.0
X-Bugzilla-Keywords: 
X-Bugzilla-Severity: normal
X-Bugzilla-Who: mpolacek 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
 bug_severity priority component assigned_to reporter target_milestone
Message-ID: <bug-106345-4@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, 18 Jul 2022 17:32:26 -0000

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D106345

            Bug ID: 106345
           Summary: Some ppc64le tests fail with -mcpu=3Dpower9
                    -mtune=3Dpower9
           Product: gcc
           Version: 12.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: testsuite
          Assignee: unassigned at gcc dot gnu.org
          Reporter: mpolacek at gcc dot gnu.org
  Target Milestone: ---

A few tests fail when GCC is configured with --with-cpu-64=3Dpower9
--with-tune-64=3Dpower9:

gcc.target/powerpc/lhs-3.c
gcc.target/powerpc/loop_align.c
gcc.target/powerpc/pr92398.p9-.c

It would be nice if we could strengthen the tests to pass with -mtune=3Dpow=
er9
-mcpu=3Dpower9 too.

In detail:

# gcc -O2 -mdejagnu-cpu=3Dpower7 lhs-3.c -S -mtune=3Dpower8
# grep ori lhs-3.s
        ori 2,2,0

but with the power9 default:

# gcc -O2 -mdejagnu-cpu=3Dpower7 lhs-3.c -S
# grep ori lhs-3.s
#

The second:

# gcc loop_align.c -fdiagnostics-plain-output -O2 -mdejagnu-cpu=3Dpower7
-falign-functions=3D16 -fno-unroll-loops -ffat-lto-objects -fno-ident -S -o
loop_align.s
# grep p2align loop_align.s
        .p2align 4,,15
        .p2align 4,,15
# gcc loop_align.c -fdiagnostics-plain-output -O2 -mdejagnu-cpu=3Dpower7
-falign-functions=3D16 -fno-unroll-loops -ffat-lto-objects -fno-ident -S -o
loop_align.s -mtune=3Dpower8
# grep p2align loop_align.s
        .p2align 4,,15
        .p2align 5

And the third test:

# gcc pr92398.p9-.c -fdiagnostics-plain-output -O2 -mvsx -ffat-lto-objects
-fno-ident -S -o pr92398.p9-.s -mtune=3Dpower8 -mcpu=3Dpower8
# grep -E '(std|not)' pr92398.p9-.s
        not 4,4
        not 5,5
        std 4,0(3)
        std 5,8(3)
        .section        .note.GNU-stack,"",@progbits
# gcc pr92398.p9-.c -fdiagnostics-plain-output -O2 -mvsx -ffat-lto-objects
-fno-ident -S -o pr92398.p9-.s=20
# grep -E '(std|not)' pr92398.p9-.s
        .section        .note.GNU-stack,"",@progbits=