ff1ffa7577
It seems the compiler supports /arch:AVX512 and /arch:AVX512F but none of the other switches (and neither are documented). And when you pass those, you also get Conflict Detection (CD), Double & Quad (DQ), Byte & Word (BW) and Vector Length (VL), which matches the ICC switch "-xCORE-AVX512". Unlike ICC, there doesn't seem to be an option to enable only the common part of AVX-512. Support for Intel Xeon Phi's current features (Exponential & Reciprocation and Prefetch) and future ones (IFMA, VBMI, 4FMAPS, 4VNNI and VPOPCNTDQ) seems to be missing altogether. See https://blogs.msdn.microsoft.com/vcblog/2017/07/11/microsoft-visual-studio-2017-supports-intel-avx-512/ Change-Id: I98105cd9616b8097957db680d73eb1f86e487e6d Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@qt.io>
107 lines
3.7 KiB
C++
107 lines
3.7 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2017 Intel Corporation.
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** Contact: https://www.qt.io/licensing/
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**
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** This file is part of the configuration of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 3 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL3 included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU Lesser General Public License version 3 requirements
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** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 2.0 or (at your option) the GNU General
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** Public license version 3 or any later version approved by the KDE Free
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** Qt Foundation. The licenses are as published by the Free Software
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** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
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** included in the packaging of this file. Please review the following
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** information to ensure the GNU General Public License requirements will
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** be met: https://www.gnu.org/licenses/gpl-2.0.html and
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** https://www.gnu.org/licenses/gpl-3.0.html.
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include <immintrin.h>
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#ifndef __AVX512F__
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# error "There doesn't seem to be AVX-512 support in this compiler"
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#endif
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#ifndef WANT_AVX512
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# error ".pro file must define WANT_AVX512 macro to the AVX-512 feature to be tested"
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#endif
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// The following checks if __AVXx__ is defined, where x is the value in
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// WANT_AVX512
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#define HAS2(x) __AVX512 ## x ## __
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#define HAS(x) HAS2(x)
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#if !HAS(WANT_AVX512)
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# error "Feature not supported"
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#endif
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int main(int, char**argv)
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{
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/* AVX512 Foundation */
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__m512i i;
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__m512d d;
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__m512 f;
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__mmask16 m = ~1;
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i = _mm512_maskz_loadu_epi32(0, argv);
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d = _mm512_loadu_pd((double *)argv + 64);
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f = _mm512_loadu_ps((float *)argv + 128);
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#ifdef WANT_AVX512ER
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/* AVX512 Exponential and Reciprocal */
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f = _mm512_exp2a23_round_ps(f, 8);
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#endif
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#ifdef WANT_AVX512CD
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/* AVX512 Conflict Detection */
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i = _mm512_maskz_conflict_epi32(m, i);
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#endif
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#ifdef WANT_AVX512PF
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/* AVX512 Prefetch */
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_mm512_mask_prefetch_i64scatter_pd(argv, 0xf, i, 2, 2);
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#endif
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#ifdef WANT_AVX512DQ
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/* AVX512 Doubleword and Quadword support */
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m = _mm512_movepi32_mask(i);
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#endif
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#ifdef WANT_AVX512BW
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/* AVX512 Byte and Word support */
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i = _mm512_mask_loadu_epi8(i, m, argv - 8);
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#endif
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#ifdef WANT_AVX512VL
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/* AVX512 Vector Length */
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__m256i i2 = _mm256_maskz_loadu_epi32(0, argv);
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_mm256_mask_storeu_epi32(argv + 1, m, i2);
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#endif
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#ifdef WANT_AVX512IFMA
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/* AVX512 Integer Fused Multiply-Add */
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i = _mm512_madd52lo_epu64(i, i, i);
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#endif
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#ifdef WANT_AVX512VBMI
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/* AVX512 Vector Byte Manipulation Instructions */
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i = _mm512_permutexvar_epi8(i, i);
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#endif
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_mm512_mask_storeu_epi64(argv, m, i);
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_mm512_mask_storeu_ps(argv + 64, m, f);
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_mm512_mask_storeu_pd(argv + 128, m, d);
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return 0;
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}
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