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 9B2F6385C6DB; Fri, 21 Jul 2023 07:34:01 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 9B2F6385C6DB
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org;
	s=default; t=1689924841;
	bh=06flRTbyyhux5XwU7CGx7YZjN/+gdI3T09bf8tvPRk8=;
	h=From:To:Subject:Date:In-Reply-To:References:From;
	b=pTTM2iqdvQtysWrcPW1L0MAM0yWdTWelNI3eZ2JgLElc992fFIO0gysObOlwhAt7R
	 3Dm7qRYJE9jzDhIkkW8XiZNFJS9vNkDTdzBX6Y14PIT3Ixl39yjkz949WIS6iR7HmD
	 Tbn2X4RcsJWtt2jrN6Ax94IGFlXuhMlrEHaLWEfA=
From: "cvs-commit at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/80574] GCC fail to optimize nested ternary
Date: Fri, 21 Jul 2023 07:34:00 +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: 7.0
X-Bugzilla-Keywords: missed-optimization
X-Bugzilla-Severity: enhancement
X-Bugzilla-Who: cvs-commit at gcc dot gnu.org
X-Bugzilla-Status: NEW
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-80574-4-i7S38vabGK@http.gcc.gnu.org/bugzilla/>
In-Reply-To: <bug-80574-4@http.gcc.gnu.org/bugzilla/>
References: <bug-80574-4@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=3D80574

--- Comment #11 from CVS 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:6d449531a60b56ed0f4aeb640aa9e46e4ec35208

commit r14-2698-g6d449531a60b56ed0f4aeb640aa9e46e4ec35208
Author: Andrew Pinski <apinski@marvell.com>
Date:   Thu Jul 20 17:36:29 2023 -0700

    MATCH: Add Max<Max<a,b>,a> -> Max<a,b> simplifcation

    This adds a simple match pattern to simplify
    `max<max<a,b>,a>` to `max<a,b>`.  Reassociation handles
    this already (r0-77700-ge969dbde29bfd396259357) but
    seems like we should be able to handle this even before
    reassociation.

    This fixes part of PR tree-optimization/80574 but more
    work is needed fix it the rest of the way. The original
    testcase there is fixed but the RTL level is what fixes
    it the rest of the way.

    OK? Bootstrapped and tested on x86_64-linux-gnu.

    gcc/ChangeLog:

            * match.pd (minmax<minmax<a,b>,a>->minmax<a,b>): New
            transformation.

    gcc/testsuite/ChangeLog:

            * gcc.dg/tree-ssa/reassoc-12.c: Disable all of
            the passes that enables match-and-simplify.
            * gcc.dg/tree-ssa/minmax-23.c: New test.=