From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id EADCE3858D20; Wed, 9 Aug 2023 09:24:06 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org EADCE3858D20 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1691573046; bh=xTOZ2gzeR17D5kUhDVtl3y0/45iOiec1BaZzrG1Sfs0=; h=From:To:Subject:Date:In-Reply-To:References:From; b=GPG/+rbDACyHwRVAexIBuTnY+ZHfmpdhXKpvBWiiLJe/vapS1RBNUj6cJdeDwWpqD 4jKe7M3JFKhKbtjxHWb/PTLH+MSV6lVCTl1Xf8AphqdlF9zzX4xc5aqKNB1bxE6BJU hHYGpz8oWtOcdKrW2WwWmllMIXZoJ/ImdPeaGbDI= From: "jakub at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug tree-optimization/110311] [14 Regression] regression in tree-optimizer Date: Wed, 09 Aug 2023 09:24:03 +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: 14.0 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: jakub 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: 14.0 X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: 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 List-Id: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D110311 --- Comment #51 from Jakub Jelinek --- The easiest would be to bisect gcc in the suspected ranges, that way you'd = know for sure which git commit introduced the problem and which fixed/"fixed" it. If it is about what the compiler emits, one doesn't have to build whole gcc from scratch each time, but can just --disable-bootstrap build it and during bisection whenever git is updated just ./config.status --recheck; ./config.status; ma= ke -jN in libcpp, libiberty and gcc subdirectories and use f951/gfortran binar= iers from that instead of the ones from the initial build to build your project.=