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 A8F833858D38; Wed,  9 Nov 2022 22:25:45 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org A8F833858D38
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org;
	s=default; t=1668032745;
	bh=rv7uRfGTVp3YgF89qsnfkuKNTtPodBR3x+xzIw0BAoA=;
	h=From:To:Subject:Date:In-Reply-To:References:From;
	b=VbrSLPP+j4uTwtSgpjvIXDxP6CKRavbalaL3dRgxbhvctywxhb9/MAH5IcdouFnoj
	 OW2j7iQVFbVH/1YDInbl/Bq0mZ2d++4sPi1CMq+VqaD0+04rkQ0kicZOJy7xmoS0GM
	 q11DVHFxkYfpV7/UaFs10g2ELoxUPrLoFK6qoH0o=
From: "amacleod at redhat dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/107591] range-op{,-float}.cc for x * x
Date: Wed, 09 Nov 2022 22:25:45 +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: 13.0
X-Bugzilla-Keywords: missed-optimization
X-Bugzilla-Severity: normal
X-Bugzilla-Who: amacleod at redhat dot com
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-107591-4-fPhkquDKFS@http.gcc.gnu.org/bugzilla/>
In-Reply-To: <bug-107591-4@http.gcc.gnu.org/bugzilla/>
References: <bug-107591-4@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=3D107591

--- Comment #16 from Andrew Macleod <amacleod at redhat dot com> ---
(In reply to Jakub Jelinek from comment #15)
> I've screwed up the real_value_negate calls, they need to assign the resu=
lt.
>=20
> Anyway, yet another option would be for cdce to ask the ranger if the sqrt
> argument can be smaller than -0.0 (and only if it can, emit the compariso=
n).
> Then we don't need to deal with removing the comparison again.
> Of course, such removals might be still useful for user code.

even checking the global range from cdce at this point should show that its=
 >=3D
-0.0...=