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 2903E3864877; Thu, 11 Jan 2024 18:01:51 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 2903E3864877
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org;
	s=default; t=1704996111;
	bh=b4JR6wlNbKWPpGrk+ZuROuKCxZn71eWNSc/i/YZIVFA=;
	h=From:To:Subject:Date:In-Reply-To:References:From;
	b=hnt5tZkvokXEZpuc1Z9+KdLCB/EJDWHnofQV2BHGeXgA7cx7e96JnO7NFuOEr/CUe
	 S5eSyyodrpreemBWgcV/0Hlz6wXvOWtgNDbzngYEBtoOSjKKgWTv+XsPyzeINTv67J
	 PvexGi8ecUaP9gNu0v6vjPk9ryV795R7ssvV9cLQ=
From: "cvs-commit at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/113301] [12/13/14 Regression] Missed
 optimization: (1/(x+1))/2 => 0 since gcc-12
Date: Thu, 11 Jan 2024 18:01:50 +0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: changed
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: gcc
X-Bugzilla-Component: tree-optimization
X-Bugzilla-Version: 14.0
X-Bugzilla-Keywords: missed-optimization
X-Bugzilla-Severity: normal
X-Bugzilla-Who: cvs-commit at gcc dot gnu.org
X-Bugzilla-Status: ASSIGNED
X-Bugzilla-Resolution: 
X-Bugzilla-Priority: P2
X-Bugzilla-Assigned-To: pinskia at gcc dot gnu.org
X-Bugzilla-Target-Milestone: 12.4
X-Bugzilla-Flags: 
X-Bugzilla-Changed-Fields: 
Message-ID: <bug-113301-4-PboSiYVrqh@http.gcc.gnu.org/bugzilla/>
In-Reply-To: <bug-113301-4@http.gcc.gnu.org/bugzilla/>
References: <bug-113301-4@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=3D113301

--- Comment #9 from GCC Commits <cvs-commit at gcc dot gnu.org> ---
The trunk branch has been updated by Andrew Pinski <pinskia@gcc.gnu.org>:

https://gcc.gnu.org/g:7f56a90269b393fcc55ef08e0990fafb7b1c24b4

commit r14-7148-g7f56a90269b393fcc55ef08e0990fafb7b1c24b4
Author: Andrew Pinski <quic_apinski@quicinc.com>
Date:   Wed Jan 10 14:25:37 2024 -0800

    match: Delay folding of 1/x into `(x+1u)<2u?x:0` until late [PR113301]

    Since currently ranger does not work with the complexity of COND_EXPR in
    some cases so delaying the simplification of `1/x` for signed types
    help code generation.
    tree-ssa/divide-8.c is a new testcase where this can help.

    Bootstrapped and tested on x86_64-linux-gnu with no regressions.

            PR tree-optimization/113301

    gcc/ChangeLog:

            * match.pd (`1/x`): Delay signed case until late.

    gcc/testsuite/ChangeLog:

            * gcc.dg/tree-ssa/divide-8.c: New test.

    Signed-off-by: Andrew Pinski <quic_apinski@quicinc.com>=