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 A39123858C66; Thu, 12 Jan 2023 18:32:25 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org A39123858C66
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org;
	s=default; t=1673548345;
	bh=n3dNzgBua7Yd9DjOY1fKl2Qm/JkAVWN2NFsQx0uuIdE=;
	h=From:To:Subject:Date:In-Reply-To:References:From;
	b=dX3QnShYTS2yiJjGl7PvaS52JLxawirt7gClpjO5m3HM3Mw/6/TcuS2DVHb2xLF+6
	 /UJtnv9hQ1o8q1exkkqwDslShYMy8JxkagV7BruHBvmlhC0RMFVcaeIMEQjktdU9qU
	 f5nwbEo+Y0MAF5MAYFvoC/EHTIYtHwbyuda+n9Z4=
From: "dcb314 at hotmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: =?UTF-8?B?W0J1ZyBpcGEvMTA4Mzg0XSBlcnJvcjogY29udmVyc2lvbiBvZiBy?=
 =?UTF-8?B?ZWdpc3RlciB0byBhIGRpZmZlcmVudCBzaXplIGluIOKAmHZpZXdfY29udmVy?=
 =?UTF-8?B?dF9leHBy4oCZ?=
Date: Thu, 12 Jan 2023 18:32:25 +0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: changed
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: gcc
X-Bugzilla-Component: ipa
X-Bugzilla-Version: 13.0
X-Bugzilla-Keywords: ice-checking, ice-on-valid-code
X-Bugzilla-Severity: normal
X-Bugzilla-Who: dcb314 at hotmail dot com
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: 
Message-ID: <bug-108384-4-lc0WRH5XAY@http.gcc.gnu.org/bugzilla/>
In-Reply-To: <bug-108384-4@http.gcc.gnu.org/bugzilla/>
References: <bug-108384-4@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
List-Id: <gcc-bugs.sourceware.org>

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D108384

--- Comment #8 from David Binderman <dcb314 at hotmail dot com> ---
(In reply to David Binderman from comment #4)
> I suspect a grep pattern could help guide the reduction.
> I tried a few patterns, but didn't make any real progress.

Using this pattern:

$ grep "func_23[^,]*,[^)]*)" bug873.c

I got the following reduced code:

struct S0 {
  int f0;
  short f1;
  unsigned f2 : 7;
  short f3
} func_2_l_27;
g_389;
func_23(struct S0 p_24, struct S0 p_25) {
  int *l_1051 =3D g_389;
  if (safe_sub_func_int16_t_s_s())
    for (;;)
      safe_lshift_func_uint8_t_u_s(p_24.f1);
  *l_1051 =3D p_25.f0;
}
func_2() {
  struct S0 l_26[] =3D {4, 5, 4, 6, 4, 5, 4, 6};
  func_23(l_26[1], func_2_l_27);
}

$ fgrep func_23 bug873.c
func_23(struct S0 p_24, struct S0 p_25) {
  func_23(l_26[1], func_2_l_27);
$=