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 4DDEE3858407; Sun,  5 Jun 2022 21:31:42 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 4DDEE3858407
From: "roger at nextmovesoftware dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/105856] [13 Regression] ice in emit_move_insn, at
 expr.cc:4011
Date: Sun, 05 Jun 2022 21:31:42 +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: 13.0
X-Bugzilla-Keywords: ice-on-valid-code
X-Bugzilla-Severity: normal
X-Bugzilla-Who: roger at nextmovesoftware dot com
X-Bugzilla-Status: ASSIGNED
X-Bugzilla-Resolution: 
X-Bugzilla-Priority: P1
X-Bugzilla-Assigned-To: roger at nextmovesoftware dot com
X-Bugzilla-Target-Milestone: 13.0
X-Bugzilla-Flags: 
X-Bugzilla-Changed-Fields: short_desc assigned_to cc priority version
 bug_status keywords target_milestone cf_reconfirmed_on cf_gcctarget
 everconfirmed
Message-ID: <bug-105856-4-UMso9i0G3g@http.gcc.gnu.org/bugzilla/>
In-Reply-To: <bug-105856-4@http.gcc.gnu.org/bugzilla/>
References: <bug-105856-4@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: Sun, 05 Jun 2022 21:31:42 -0000

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D105856

Roger Sayle <roger at nextmovesoftware dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|ice in emit_move_insn, at   |[13 Regression] ice in
                   |expr.cc:4011                |emit_move_insn, at
                   |                            |expr.cc:4011
           Assignee|unassigned at gcc dot gnu.org      |roger at nextmoveso=
ftware dot com
                 CC|                            |roger at nextmovesoftware =
dot com
           Priority|P3                          |P1
            Version|12.0                        |13.0
             Status|UNCONFIRMED                 |ASSIGNED
           Keywords|                            |ice-on-valid-code
   Target Milestone|---                         |13.0
   Last reconfirmed|                            |2022-06-05
             Target|                            |arm*
     Ever confirmed|0                           |1

--- Comment #2 from Roger Sayle <roger at nextmovesoftware dot com> ---
Mine.  Sorry for the breakage.  I've a fix that avoids the ICE on ARM, and
allows GCC to generate the following code for this testcase:
g_329_3:
        mov     r0, #6
        b       func_19
[i.e. the same code as without the #pragma pack(1)].
This is a big improvement on GCC v12 which generates
(both with and without #pragma pack(1)):

g_329_3:
  movw r3, #:lower16:.LANCHOR0
  movt r3, #:upper16:.LANCHOR0
  ldr r0, [r3]
  b func_19

I'm bootstrapping and regression testing on x86_64 now.=