From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id 0A2263857C4A; Wed, 6 Mar 2024 22:53:08 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 0A2263857C4A DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1709765588; bh=dSPc1ax+wO4CW337rMvm7taozpwcoALaOvrOV4385uw=; h=From:To:Subject:Date:In-Reply-To:References:From; b=p5T/uvOzgI6KruM7MXlB3NUM4gzKuzl12eR6VzSR8AqyYI7Z3jyX+mKuBLUvktxBb EaEmnIJaYdfGVACRJfEGVZDolnsu7R4Q5SQW3WQFkeEBnx/MMIqmeuXcKbRf3v84Li 88N4FObTLXsYmNADWcxg8/3bPiW8/g0+sf/qc9GA= From: "segher at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug rtl-optimization/101523] Huge number of combine attempts Date: Wed, 06 Mar 2024 22:53:07 +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: 12.0 X-Bugzilla-Keywords: compile-time-hog, memory-hog X-Bugzilla-Severity: normal X-Bugzilla-Who: segher at gcc dot gnu.org X-Bugzilla-Status: UNCONFIRMED X-Bugzilla-Resolution: X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: segher at gcc dot gnu.org X-Bugzilla-Target-Milestone: --- 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=3D101523 --- Comment #17 from Segher Boessenkool --- Why does this happen so extremely often for s390x customers? It should from first principles happen way more often for e.g. powerpc, but we never see s= uch big problems, let alone "all of the time"! So what is really happening? And, when did this start, anyway, because apparently at some point in time all was fine?=