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 A1A5F385B835; Fri, 17 Apr 2020 14:23:59 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org A1A5F385B835
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org;
 s=default; t=1587133439;
 bh=58CeliUCpQ61gil5LfwSDNCC9sH9CcXeK4UJjyikh6o=;
 h=From:To:Subject:Date:In-Reply-To:References:From;
 b=jM+qWHv9p43shz5lGgngp4FMIaGGLu5pisY2ZF94IgM1Xd+2wR7WjHymtckXCyhzs
 r6vuc/jNcdTxHA8tiAiSuR6Km0TZ30p/ga0gmzf/M0FWtYDlq9r9lCKd4Az4aLuSA6
 JCjaIdiKi4zFE92lwpQ2swq7+Lkdv5S8XSVxFKes=
From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug ipa/93385] [10 Regression] wrong code with u128 modulo at -O2
 -fno-dce -fno-ipa-cp -fno-tree-dce
Date: Fri, 17 Apr 2020 14:23:59 +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: 10.0
X-Bugzilla-Keywords: diagnostic, wrong-code
X-Bugzilla-Severity: normal
X-Bugzilla-Who: jakub at gcc dot gnu.org
X-Bugzilla-Status: ASSIGNED
X-Bugzilla-Resolution: 
X-Bugzilla-Priority: P1
X-Bugzilla-Assigned-To: jamborm at gcc dot gnu.org
X-Bugzilla-Target-Milestone: 10.0
X-Bugzilla-Flags: 
X-Bugzilla-Changed-Fields: 
Message-ID: <bug-93385-4-07l6rVV9OF@http.gcc.gnu.org/bugzilla/>
In-Reply-To: <bug-93385-4@http.gcc.gnu.org/bugzilla/>
References: <bug-93385-4@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 Apr 2020 14:23:59 -0000

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D93385

--- Comment #27 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Now, perhaps the analysis code could also detect which lhs are directly or
indirectly needed by debug stmts and when doing this return NULL in
remap_gimple_stmt, we could do something like (much simplified)
insert_debug_temp_for_var_def in there.  Though unsure if we must always ha=
ndle
first the SSA_NAME definitions before uses, if not, then we'd need to figure
out the SSA_NAME to DEBUG_EXPR_DECL mapping early and then just let
remap_gimple_stmt add the debug stmt for it.
Perhaps ignore debug stmts for now as long as it doesn't ICE on them and I'=
ll
try to do something for those?=