From owner-freebsd-hackers@freebsd.org Sun May 1 23:51:21 2016 Return-Path: Delivered-To: freebsd-hackers@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id CB9DCB29B7F for ; Sun, 1 May 2016 23:51:21 +0000 (UTC) (envelope-from cbergstrom@pathscale.com) Received: from mail-pf0-x22e.google.com (mail-pf0-x22e.google.com [IPv6:2607:f8b0:400e:c00::22e]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 99C1A1DD7 for ; Sun, 1 May 2016 23:51:21 +0000 (UTC) (envelope-from cbergstrom@pathscale.com) Received: by mail-pf0-x22e.google.com with SMTP id c189so73125591pfb.3 for ; Sun, 01 May 2016 16:51:21 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=pathscale-com.20150623.gappssmtp.com; s=20150623; h=mime-version:content-transfer-encoding:message-id:date:subject:from :in-reply-to:references:to; bh=wfSG6R5S0pa6J2f2vL8mUBwMGzJVbmA8YHHdlVuv2lc=; b=cGa9Z2d/08tBILZZmP39aFdH1uYCv5ZZlaSg8oCeEyn7GMN8YUYToTBq5hZWbEftXB Ukf+ednaKi6ly6KeGqJzGY+DRGcSzOaUnvA87favtsJhyKi6hwuebQCI64EbHVdf+A9Z 5NLGcROvHW9uCc2/3nf5nltQeIrQ18lk8508ey0Z7xelg78t4UPLm/ylaAjGnuMQ9BMp GgHaOcGTVtBVIiIZuWQEOPD8FYwdlwmb657bPdbrJuIRS3qbIUT7C+EvfwG4otq+ml4n jxxa6wTZ8yGA+PQ9iLe4RrNqJLoc//16o15jAIXT0tYaeNOZ2AmY0Zh9bNMZI2p0CAel xACg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:content-transfer-encoding :message-id:date:subject:from:in-reply-to:references:to; bh=wfSG6R5S0pa6J2f2vL8mUBwMGzJVbmA8YHHdlVuv2lc=; b=dqStB1e9huhGRNwlxy9T86dpVXVBqCILxdqpMhub+A7pkly3VYENm7EkOFA94h6rP6 WAHq898SwqmHmGcFB45o+zTxuEQ8q6sV7CI9ElEV2xgigkNd8cWedwy6RrgQFvwm0vLE omFaEjXiAki8asAqthK7VUCwoXUYYqzd6K/pPubFQgzGPTuqf8Bu6kqk6TvWogkAeiI1 6Xiel4LPP5kO6YBnqkfZdeELieSOkl2SS+CfPKh4aLHKgpjavGdX6hzjzOsaqlyPNlcO Bni/c4T4whXmE8zgAMhfmiAkVDrYgb6yhBCKSZYxNAB09yADZKFgP1hBocZEcZlLnG3f YN0A== X-Gm-Message-State: AOPr4FUrYmYycOvbgz2+go+SKO2//nexr9s/Y4+UhEsVScFqmqMePWXR3zpKOk2t23YwHQ== X-Received: by 10.98.18.195 with SMTP id 64mr47682152pfs.152.1462146680971; Sun, 01 May 2016 16:51:20 -0700 (PDT) Received: from [127.0.0.1] ([183.90.37.249]) by smtp.gmail.com with ESMTPSA id s26sm40030170pfa.0.2016.05.01.16.51.10 (version=TLSv1/SSLv3 cipher=OTHER); Sun, 01 May 2016 16:51:20 -0700 (PDT) Content-Type: text/plain; charset="iso-8859-1" MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Mailer: BlackBerry Email (10.3.2.2876) Message-ID: <20160501235110.5480531.91284.93547@pathscale.com> Date: Mon, 02 May 2016 07:51:10 +0800 Subject: Re: some clang AVX instricts looks broken From: cbergstrom@pathscale.com In-Reply-To: <20160501235127.451d8812@rimwks> References: <20160501235127.451d8812@rimwks> To: Rozhuk Ivan , freebsd-hackers@freebsd.org, Rozhuk Ivan X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 01 May 2016 23:51:21 -0000 I doubt this is fbsd specific? Wouldn't it be better to report this to clan= g upstream? =A0 Original Message =A0 From: Rozhuk Ivan Sent: Monday, May 2, 2016 04:51 To: freebsd-hackers@freebsd.org; Rozhuk Ivan Subject: some clang AVX instricts looks broken Hi! I try port some SSE code to AVX and found that clang instricts _mm256_extra= ct* broken: _mm256_extract_epi8(__aymm0, 0) - BAD result _mm256_extract_epi8(__aymm0, 0) & 0xff - OK _mm_extract_epi8(_mm256_extractf128_si256(__aymm0, 0), 0) - OK Same time: _mm256_extract_epi8(__aymm0, 0) build with GCC - OK. CLANG: static __inline int __attribute__((__always_inline__, __nodebug__)) _mm256_extract_epi8(__m256i __a, int const __imm) { __v32qi __b =3D (__v32qi)__a; return __b[__imm & 31]; } GCC: extern __inline int __attribute__((__gnu_inline__, __always_inline__, __art= ificial__))=20 _mm256_extract_epi8 (__m256i const __X, int const __N)=20 {=20 __m128i __Y =3D _mm256_extractf128_si256 (__X, __N >> 4);=20 return _mm_extract_epi8 (__Y, __N % 16);=20 } _______________________________________________ freebsd-hackers@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to "freebsd-hackers-unsubscribe@freebsd.org"