From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id 19BD43858C00; Thu, 1 Sep 2022 09:46:47 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 19BD43858C00 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1662025607; bh=zJt20BI3QfxKDCjeBFug8mayPGHJbJ3xihm/uoTcvyc=; h=From:To:Subject:Date:In-Reply-To:References:From; b=FgNBP0JDUKRLEJS9EdP106PgAPMhL+T2bAeWEA5+51wnDYbnMAQwBtHeT4rKu3HNq y47QZWo5WNHZFTOesvePLEWBt1c3KTpEHpx/RDmpykQu7cKBcYs5cEFW5/8Akk4n/i pocQkw4ROpjEZWsVTJHlXtAjvxSeOryvwS4bPxE0= From: "rearnsha at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug target/106763] Armv8.2 vmov.f16 instruction sometimes causes SIGILL Date: Thu, 01 Sep 2022 09:46:45 +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: 12.2.1 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: rearnsha at gcc dot gnu.org X-Bugzilla-Status: RESOLVED X-Bugzilla-Resolution: INVALID 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: 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=3D106763 --- Comment #10 from Richard Earnshaw --- If you don't have CONFIG_SMP enabled, it looks like the kernel will do lazy context switching of the FP registers (it can save time if a process doesn'= t do any FP). So another work around might be to enable that, even if you have = only have a single core.=