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 4513A388E825; Fri, 17 Jul 2020 09:20:36 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 4513A388E825
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org;
 s=default; t=1594977636;
 bh=HJgzGP0XZDGkSh1oGUGuKGSxB+AybSqf8al3meIv0Fg=;
 h=From:To:Subject:Date:In-Reply-To:References:From;
 b=jsMajn8LF41BtHtiOc4Zl4Knue/EwUQlM8sWq9Q5aZiC1fVBmgUXrpuOqcdIQV0y2
 c5dgJw/Ahp2/9O3OP0x6c2U3zP46X3o9zXt4bRX81/f/jojEO5PRQfpyEfK8h40LwJ
 9oqODUN1hG0gbEaA/zW7A87JP6HkkEvKw/EhOHqE=
From: "cvs-commit at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/82199] __builtin_shuffle sometimes should produce zip1
 rather than TBL
Date: Fri, 17 Jul 2020 09:20:36 +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: 8.0
X-Bugzilla-Keywords: missed-optimization
X-Bugzilla-Severity: enhancement
X-Bugzilla-Who: cvs-commit at gcc dot gnu.org
X-Bugzilla-Status: ASSIGNED
X-Bugzilla-Resolution: 
X-Bugzilla-Priority: P3
X-Bugzilla-Assigned-To: pinskia at gcc dot gnu.org
X-Bugzilla-Target-Milestone: ---
X-Bugzilla-Flags: 
X-Bugzilla-Changed-Fields: 
Message-ID: <bug-82199-4-Zm5rx4w513@http.gcc.gnu.org/bugzilla/>
In-Reply-To: <bug-82199-4@http.gcc.gnu.org/bugzilla/>
References: <bug-82199-4@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: <http://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: <http://gcc.gnu.org/mailman/listinfo/gcc-bugs>,
 <mailto:gcc-bugs-request@gcc.gnu.org?subject=subscribe>
X-List-Received-Date: Fri, 17 Jul 2020 09:20:36 -0000

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D82199

--- Comment #5 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Richard Sandiford <rsandifo@gcc.gnu.o=
rg>:

https://gcc.gnu.org/g:7efc03fd2cb69fa0f790d32627a3e8131724e7e1

commit r11-2191-g7efc03fd2cb69fa0f790d32627a3e8131724e7e1
Author: Dmitrij Pochepko <dmitrij.pochepko@bell-sw.com>
Date:   Fri Jul 17 10:20:12 2020 +0100

    __builtin_shuffle sometimes should produce zip1 rather than TBL (PR8219=
9)

    The following patch enables vector permutations optimization by using
    another vector element size when applicable.  It allows usage of simpler
    instructions in applicable cases.

    example:

    vector float f(vector float a, vector float b)
    {
      return __builtin_shuffle  (a, b, (vector int){0, 1, 4,5});
    }

    was compiled into:
    ...
            adrp    x0, .LC0
            ldr     q2, [x0, #:lo12:.LC0]
            tbl     v0.16b, {v0.16b - v1.16b}, v2.16b
    ...

    and after patch:
    ...
            zip1    v0.2d, v0.2d, v1.2d
    ...

    bootstrapped and tested on aarch64-linux-gnu with no regressions

    gcc/ChangeLog:

    2020-07-17  Andrew Pinski  <apinksi@marvell.com>

            PR target/82199
            * config/aarch64/aarch64.c (aarch64_evpc_reencode): New functio=
n.
            (aarch64_expand_vec_perm_const_1): Call it.

    gcc/testsuite/ChangeLog:

    2020-07-17  Andrew Pinski  <apinksi@marvell.com>

            PR target/82199
            * gcc.target/aarch64/vdup_n_3.c: New test.
            * gcc.target/aarch64/vzip_1.c: New test.
            * gcc.target/aarch64/vzip_2.c: New test.
            * gcc.target/aarch64/vzip_3.c: New test.
            * gcc.target/aarch64/vzip_4.c: New test.

    Co-Authored-By: Dmitrij Pochepko <dmitrij.pochepko@bell-sw.com>=