From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id 46F033858D35; Thu, 9 Nov 2023 00:23:24 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 46F033858D35 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1699489404; bh=ksQmNvR+tJKkQvB7GHKBQCh+Qg2SEDNvxiEUfpKOV2M=; h=From:To:Subject:Date:In-Reply-To:References:From; b=HDScJJg7yZuRns8XDpzL3o18yuihPcTjaYpP7L5D5SmskGkURLngi4jZrARH889fS lnvIHGHw/Zh+jyWAGlpMePc4v+3CAlTwL84Ogj1PTgeMwagGkTvr2HZsW1n/3mB7T3 0696v1clgA3fmC9A/RYTroRTvDaMEgZnF6q0ujQs= From: "dave.anglin at bell dot net" To: gcc-bugs@gcc.gnu.org Subject: [Bug rtl-optimization/112415] [14 regression] Python 3.11 miscompiled on HPPA with new RTL fold mem offset pass, since r14-4664-g04c9cf5c786b94 Date: Thu, 09 Nov 2023 00:23:23 +0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: rtl-optimization X-Bugzilla-Version: 14.0 X-Bugzilla-Keywords: wrong-code X-Bugzilla-Severity: normal X-Bugzilla-Who: dave.anglin at bell dot net 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=3D112415 --- Comment #28 from dave.anglin at bell dot net --- On 2023-11-08 7:07 p.m., law at gcc dot gnu.org wrote: > Do we already have a dump for the key function? Presumably f-m-o doesn't > trigger*that* much. And if this is triggering w/o LTO we can probably m= ove to > cross debugging and analysis of those dump files and assembly code with a= nd > without f-m-o enabled, narrowing our focus on the key function. I tried looking at the difference with and without f-m-o and it was quite large.=C2=A0 The difference with and without strict aliasing is much smaller.=C2=A0 The main difference= s that I saw relate to the inlining of compiler_visit_expr and compiler_visit_expr1.=