From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id AD7563857355; Sun, 25 Sep 2022 13:57:18 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org AD7563857355 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sourceware.org; s=default; t=1664114238; bh=qGaWjOMtroa4CBGOW5iB2Ff6SLmRWNegfET5YiCYrn0=; h=From:To:Subject:Date:In-Reply-To:References:From; b=ZcjmWMa/xqwtziR+5Jj842HeO7Cdm1oPtRwL+WqHVDLWtO9c7aDM3f4MZGwXZ3b72 gYlCAzCRGrTla0uMSN1irfdXpbJ6CsIoONKtw5wrHKusW6kP+AYZk17UoYh02MIlLM 9QHueCB5AZVQFpeC06zfmNiC+vzEsoOjKIpdUfgc= From: "goldstein.w.n at gmail dot com" To: glibc-bugs@sourceware.org Subject: [Bug string/29611] Optimized AVX2 string functions unconditionally use BMI2 instructions Date: Sun, 25 Sep 2022 13:57:18 +0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: glibc X-Bugzilla-Component: string X-Bugzilla-Version: 2.31 X-Bugzilla-Keywords: X-Bugzilla-Severity: critical X-Bugzilla-Who: goldstein.w.n at gmail dot com X-Bugzilla-Status: NEW X-Bugzilla-Resolution: X-Bugzilla-Priority: P2 X-Bugzilla-Assigned-To: goldstein.w.n at gmail dot com 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://sourceware.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 List-Id: https://sourceware.org/bugzilla/show_bug.cgi?id=3D29611 --- Comment #2 from Noah Goldstein --- This was fixed by: commit 83c5b368226c34a2f0a5287df40fc290b2b34359 Author: H.J. Lu Date: Mon Apr 19 10:45:07 2021 -0700 x86-64: Require BMI2 for strchr-avx2.S Which we can probably backport easily. The issue is that some avx2 changes where backported without the surrounding ifunc code. Note: This will also be an issue for memchr-avx2.S --=20 You are receiving this mail because: You are on the CC list for the bug.=