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 6B09E3858D39; Thu, 10 Nov 2022 21:31:54 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 6B09E3858D39
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org;
	s=default; t=1668115914;
	bh=pOheVCpCYTo1JO9BphqasXV1UtCX9Z0rSgBtN1FsX98=;
	h=From:To:Subject:Date:In-Reply-To:References:From;
	b=lBUYyZ7AbPuPESB0KKQjtoUTa1DNqqlTSsXNM8wePm3u3CVS0bs5mhsseTCHhzbNE
	 /5vUFSPiTq86+R57qiODH2X4TeNyupZqr4uPYlvrNU1HnZw88+ZtWMi6w7AtgtqXrD
	 xzYi5q+JCwzDN/vgEipSAf6a428fmQh3cCS/e6B0=
From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/107622] Missing optimization of switch-statement
Date: Thu, 10 Nov 2022 21:31:53 +0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: changed
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: gcc
X-Bugzilla-Component: c++
X-Bugzilla-Version: 13.0
X-Bugzilla-Keywords: 
X-Bugzilla-Severity: normal
X-Bugzilla-Who: pinskia at gcc dot gnu.org
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-107622-4-Kt59rEHjOP@http.gcc.gnu.org/bugzilla/>
In-Reply-To: <bug-107622-4@http.gcc.gnu.org/bugzilla/>
References: <bug-107622-4@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=3D107622

--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
There is one part which GCC could optimize better that is the store.
There might be another bug about that too.

Note as I mentioned __builtin_unreachable is needed if truely the value com=
ing
inside g is outside of [0,3] range.=