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 B0F55386F035; Fri, 19 Mar 2021 11:26:28 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org B0F55386F035
From: "doko at debian dot org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/99663] [11 Regression] ICE in extract_constrain_insn, at
 recog.c:2670 on s390x-linux-gnu
Date: Fri, 19 Mar 2021 11:26:28 +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: ice-on-valid-code
X-Bugzilla-Severity: normal
X-Bugzilla-Who: doko at debian dot org
X-Bugzilla-Status: WAITING
X-Bugzilla-Resolution: 
X-Bugzilla-Priority: P1
X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org
X-Bugzilla-Target-Milestone: 11.0
X-Bugzilla-Flags: 
X-Bugzilla-Changed-Fields: 
Message-ID: <bug-99663-4-q4L454p5uH@http.gcc.gnu.org/bugzilla/>
In-Reply-To: <bug-99663-4@http.gcc.gnu.org/bugzilla/>
References: <bug-99663-4@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: Fri, 19 Mar 2021 11:26:28 -0000

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D99663

--- Comment #3 from Matthias Klose <doko at debian dot org> ---
trying to reproduce, it ICEs at a different place...

$ cat decNumber.i
typedef struct {
  int exponent;
  unsigned short lsu[];
} decNumber;
char __decd2utable[] =3D {};
decNumber *decExpOp_rhs;
void decExpOp() {
  decNumber buft[0];
  decNumber allocbuft;
  decNumber *t =3D buft;
  int t_0;
  if (decExpOp_rhs)
    t =3D &allocbuft;
  for (;;) {
    unsigned short varbuff[0];
    unsigned short *msu1, *source =3D t->lsu + (9 ? __decd2utable[t_0] : 3);
    for (; source >=3D t->lsu; source--, msu1--)
      *msu1 =3D *source;
    for (; msu1 >=3D varbuff;)
      ;
    if (t->exponent)
      break;
  }
}

$ build/gcc/xgcc -Bbuild/gcc/ -c -mtune=3Dz15 -march=3Dz13 -mzarch -O1 decN=
umber.i=20
during RTL pass: reload
decNumber.i: In function =E2=80=98decExpOp=E2=80=99:
decNumber.i:24:1: internal compiler error: in lra_set_insn_recog_data, at
lra.c:1004
   24 | }
      | ^
0x1ea6333 lra_set_insn_recog_data(rtx_insn*)
        ../../src/gcc/lra.c:1004
0x1ea2063 lra_get_insn_recog_data
        ../../src/gcc/lra-int.h:487
0x1ea9f99 lra_update_insn_regno_info(rtx_insn*)
        ../../src/gcc/lra.c:1625
0x1eab8b7 lra_push_insn_1
        ../../src/gcc/lra.c:1780
0x1eab905 lra_push_insn(rtx_insn*)
        ../../src/gcc/lra.c:1788
0x1eabad9 push_insns
        ../../src/gcc/lra.c:1831
0x1eabd81 lra_process_new_insns(rtx_insn*, rtx_insn*, rtx_insn*, char const=
*)
        ../../src/gcc/lra.c:1871
0x1ed2bab curr_insn_transform
        ../../src/gcc/lra-constraints.c:4669
0x1ed5c17 lra_constraints(bool)
        ../../src/gcc/lra-constraints.c:5163
0x1eaddb3 lra(_IO_FILE*)
        ../../src/gcc/lra.c:2336
0x1e13ec3 do_reload
        ../../src/gcc/ira.c:5834
0x1e145f1 execute
        ../../src/gcc/ira.c:6020
Please submit a full bug report,
with preprocessed source if appropriate.=