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authorThiago Macieira <thiago.macieira@intel.com>2011-12-29 22:44:16 -0200
committerQt by Nokia <qt-info@nokia.com>2012-03-23 19:43:00 +0100
commit1882cf1c9d68e0c325c89f0bdf368b47206f19e0 (patch)
treeb127c5b7de48526cf4ec83076c66ff18fb46f133 /config.tests
parenta1b30b49ef09bef2e97b9a0622bf7ad622678fee (diff)
Add detection of AVX and AVX2 support in the compiler.
Intel CC 12.1 supports AVX2 but only with -march=core-avx2. The -mavx2 option produces a warning. GCC 4.6 does not recognise any option. GCC 4.7 recognises both -mavx2 and -march=core-avx2 so let's use the latter for now. We may need to change to -mavx2 when there's an AMD processor that supports AVX2 too. Change-Id: I529240e6e6c2c0e3942d357e0320212d954fe4de Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@nokia.com>
Diffstat (limited to 'config.tests')
-rw-r--r--config.tests/unix/avx2/avx2.cpp55
-rw-r--r--config.tests/unix/avx2/avx2.pro3
2 files changed, 58 insertions, 0 deletions
diff --git a/config.tests/unix/avx2/avx2.cpp b/config.tests/unix/avx2/avx2.cpp
new file mode 100644
index 0000000000..9e56531220
--- /dev/null
+++ b/config.tests/unix/avx2/avx2.cpp
@@ -0,0 +1,55 @@
+/****************************************************************************
+**
+** Copyright (C) 2012 Intel Corporation.
+** Contact: http://www.qt-project.org/
+**
+** This file is part of the configuration of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** GNU Lesser General Public License Usage
+** This file may be used under the terms of the GNU Lesser General Public
+** License version 2.1 as published by the Free Software Foundation and
+** appearing in the file LICENSE.LGPL included in the packaging of this
+** file. Please review the following information to ensure the GNU Lesser
+** General Public License version 2.1 requirements will be met:
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights. These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU General
+** Public License version 3.0 as published by the Free Software Foundation
+** and appearing in the file LICENSE.GPL included in the packaging of this
+** file. Please review the following information to ensure the GNU General
+** Public License version 3.0 requirements will be met:
+** http://www.gnu.org/copyleft/gpl.html.
+**
+** Other Usage
+** Alternatively, this file may be used in accordance with the terms and
+** conditions contained in a signed written agreement between you and Nokia.
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <immintrin.h>
+
+int main(int, char**)
+{
+ /* AVX */
+ _mm256_zeroall();
+ volatile __m256i a = _mm256_setzero_si256();
+
+ /* AVX2 */
+ volatile __m256i b = _mm256_and_si256(a, a);
+ volatile __m256i result = _mm256_add_epi8(a, b);
+ (void)result;
+ return 0;
+}
diff --git a/config.tests/unix/avx2/avx2.pro b/config.tests/unix/avx2/avx2.pro
new file mode 100644
index 0000000000..48374f11c4
--- /dev/null
+++ b/config.tests/unix/avx2/avx2.pro
@@ -0,0 +1,3 @@
+SOURCES = avx2.cpp
+CONFIG -= x11 qt
+mac:CONFIG -= app_bundle