From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 19457 invoked by alias); 3 Nov 2014 03:02:16 -0000 Mailing-List: contact gcc-bugs-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Id: List-Archive: List-Post: List-Help: Sender: gcc-bugs-owner@gcc.gnu.org Received: (qmail 19386 invoked by uid 48); 3 Nov 2014 03:02:12 -0000 From: "mednafen at gmail dot com" To: gcc-bugs@gcc.gnu.org Subject: [Bug target/63661] [4.9/5 Regression] -O2 miscompiles on OSX 10.10 Yosemite Date: Mon, 03 Nov 2014 03:02:00 -0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: target X-Bugzilla-Version: 4.9.1 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: mednafen at gmail dot com X-Bugzilla-Status: NEW X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org X-Bugzilla-Target-Milestone: 4.9.3 X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: cc attachments.created Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-SW-Source: 2014-11/txt/msg00074.txt.bz2 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63661 mednafen at gmail dot com changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |mednafen at gmail dot com --- Comment #19 from mednafen at gmail dot com --- Created attachment 33870 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=33870&action=edit Simplified testcase. Simplified testcase, tested to be broken on x86_64 Linux. $ /usr/local/gcc-4.9.2/bin/gcc -O2 -fpic -o testcase-alt testcase-alt.c && ./testcase-alt A: 0x00007fffd8416f60 B: 0x4014000000000000 ---- 5 $ /usr/local/gcc-4.9.2/bin/gcc -O2 -fpic -mtune=nehalem -o testcase-alt testcase-alt.c && ./testcase-alt A: 0x00007fffc9fb1730 B: 0x00007fffc9fb1730 ---- 6.95331e-310 Aborted