From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id 9DC313858005; Tue, 2 Nov 2021 07:17:31 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 9DC313858005 From: "pinskia at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug middle-end/103030] floating point to int inconsistency Date: Tue, 02 Nov 2021 07:17:31 +0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: middle-end X-Bugzilla-Version: 9.3.0 X-Bugzilla-Keywords: wrong-code X-Bugzilla-Severity: normal X-Bugzilla-Who: pinskia at gcc dot gnu.org X-Bugzilla-Status: RESOLVED X-Bugzilla-Resolution: DUPLICATE 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: resolution bug_status Message-ID: In-Reply-To: References: 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 List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 02 Nov 2021 07:17:31 -0000 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D103030 Andrew Pinski changed: What |Removed |Added ---------------------------------------------------------------------------- Resolution|--- |DUPLICATE Status|WAITING |RESOLVED --- Comment #3 from Andrew Pinski --- This is just an artifact of x87 and how everything is done in 80bit fp and sometimes you get different answers than you are expected. If SSE2 is turn= ed on, then the integer to fp conversion happens in the SSE2 unit and is conve= rted to 64bit fp before the conversion. Again this is not really a bug, but a partial misunderstanding of floating point and how x87 floating point works. *** This bug has been marked as a duplicate of bug 323 ***=