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 BADC83990839; Wed, 12 May 2021 18:38:53 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org BADC83990839
From: "ubizjak at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/98218] [TARGET_MMX_WITH_SSE] Implement 64bit vector
 compares (AVX512 masked compares missing)
Date: Wed, 12 May 2021 18:38:53 +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: 11.0
X-Bugzilla-Keywords: missed-optimization
X-Bugzilla-Severity: enhancement
X-Bugzilla-Who: ubizjak 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-98218-4-PYfAxUsHa2@http.gcc.gnu.org/bugzilla/>
In-Reply-To: <bug-98218-4@http.gcc.gnu.org/bugzilla/>
References: <bug-98218-4@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, 12 May 2021 18:38:53 -0000

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D98218

--- Comment #12 from Uro=C5=A1 Bizjak <ubizjak at gmail dot com> ---
(In reply to David Binderman from comment #11)
> I might be seeing something similar:
>=20
> caxcpy.f: In function 'caxcpy':
> caxcpy.f:53:72: error: unrecognizable insn:
>    53 |       end subroutine
>       |=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20
> ^
> (insn 136 135 137 16 (set (reg:V2SF 107 [ vect__96.11 ])
>         (if_then_else:V2SF (reg:V2SF 220)
>             (reg:V2SF 84 [ _3 ])
>             (reg:V2SF 219))) -1
>      (nil))
> during RTL pass: vregs
> caxcpy.f:53:72: internal compiler error: in extract_insn, at recog.c:2770

Yeah, this is a non-existent SSE "cmove". I tried to find all paths where t=
his
should divert to a sequence of logic instructions or PBLENDB, but due to
plethora of ISAs some cmove expansions fell through the cracks. Fortunately,
easy to fix problem, please just provide a testcase.=