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Branched from the monolithic repo, Qt master branch, at commit
896db169ea224deb96c59ce8af800d019de63f12

1 files changed, 172 insertions, 0 deletions

diff --git a/src/corelib/tools/qsimd_p.h b/src/corelib/tools/qsimd_p.h
new file mode 100644
index 0000000000..4647804603
--- /dev/null
+++ b/src/corelib/tools/qsimd_p.h
@@ -0,0 +1,172 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtCore module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, 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.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSIMD_P_H
+#define QSIMD_P_H
+
+#include <qglobal.h>
+
+
+QT_BEGIN_HEADER
+
+
+#if defined(QT_NO_MAC_XARCH) || (defined(Q_OS_DARWIN) && (defined(__ppc__) || defined(__ppc64__)))
+// Disable MMX and SSE on Mac/PPC builds, or if the compiler
+// does not support -Xarch argument passing
+#undef QT_HAVE_SSE
+#undef QT_HAVE_SSE2
+#undef QT_HAVE_SSE3
+#undef QT_HAVE_SSSE3
+#undef QT_HAVE_SSE4_1
+#undef QT_HAVE_SSE4_2
+#undef QT_HAVE_AVX
+#undef QT_HAVE_3DNOW
+#undef QT_HAVE_MMX
+#endif
+
+// SSE intrinsics
+#if defined(QT_HAVE_SSE2) && (defined(__SSE2__) || defined(Q_CC_MSVC))
+#if defined(QT_LINUXBASE)
+/// this is an evil hack - the posix_memalign declaration in LSB
+/// is wrong - see http://bugs.linuxbase.org/show_bug.cgi?id=2431
+#  define posix_memalign _lsb_hack_posix_memalign
+#  include <emmintrin.h>
+#  undef posix_memalign
+#else
+#  ifdef Q_CC_MINGW
+#    include <windows.h>
+#  endif
+#  include <emmintrin.h>
+#endif
+
+// SSE3 intrinsics
+#if defined(QT_HAVE_SSE3) && (defined(__SSE3__) || defined(Q_CC_MSVC))
+#include <pmmintrin.h>
+#endif
+
+// SSSE3 intrinsics
+#if defined(QT_HAVE_SSSE3) && (defined(__SSSE3__) || defined(Q_CC_MSVC))
+#include <tmmintrin.h>
+#endif
+
+// SSE4.1 intrinsics
+#if defined(QT_HAVE_SSE4_1) && (defined(__SSE4_1__) || defined(Q_CC_MSVC))
+#include <smmintrin.h>
+#endif
+
+// SSE4.2 intrinsics
+#if defined(QT_HAVE_SSE4_2) && (defined(__SSE4_2__) || defined(Q_CC_MSVC))
+#include <nmmintrin.h>
+#endif
+
+// AVX intrinsics
+#if defined(QT_HAVE_AVX) && (defined(__AVX__) || defined(Q_CC_MSVC))
+#include <immintrin.h>
+#endif
+
+
+#if !defined(QT_BOOTSTRAPPED) && (!defined(Q_CC_MSVC) || (defined(_M_X64) || _M_IX86_FP == 2))
+#define QT_ALWAYS_HAVE_SSE2
+#endif
+#endif // defined(QT_HAVE_SSE2) && (defined(__SSE2__) || defined(Q_CC_MSVC))
+
+// NEON intrinsics
+#if defined __ARM_NEON__
+#define QT_ALWAYS_HAVE_NEON
+#include <arm_neon.h>
+#endif
+
+
+// IWMMXT intrinsics
+#if defined(QT_HAVE_IWMMXT)
+#include <mmintrin.h>
+#if defined(Q_OS_WINCE)
+#  include "qplatformdefs.h"
+#endif
+#endif
+
+#if defined(QT_HAVE_IWMMXT)
+#if !defined(__IWMMXT__) && !defined(Q_OS_WINCE)
+#  include <xmmintrin.h>
+#elif defined(Q_OS_WINCE_STD) && defined(_X86_)
+#  pragma warning(disable: 4391)
+#  include <xmmintrin.h>
+#endif
+#endif
+
+// 3D now intrinsics
+#if defined(QT_HAVE_3DNOW)
+#include <mm3dnow.h>
+#endif
+
+QT_BEGIN_NAMESPACE
+
+QT_MODULE(Core)
+
+enum CPUFeatures {
+    None        = 0,
+    MMX         = 0x1,
+    MMXEXT      = 0x2,
+    MMX3DNOW    = 0x4,
+    MMX3DNOWEXT = 0x8,
+    SSE         = 0x10,
+    SSE2        = 0x20,
+    CMOV        = 0x40,
+    IWMMXT      = 0x80,
+    NEON        = 0x100,
+    SSE3        = 0x200,
+    SSSE3       = 0x400,
+    SSE4_1      = 0x800,
+    SSE4_2      = 0x1000,
+    AVX         = 0x2000
+};
+
+Q_CORE_EXPORT uint qDetectCPUFeatures();
+
+
+#define ALIGNMENT_PROLOGUE_16BYTES(ptr, i, length) \
+    for (; i < static_cast<int>(qMin(static_cast<quintptr>(length), ((4 - ((reinterpret_cast<quintptr>(ptr) >> 2) & 0x3)) & 0x3))); ++i)
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif // QSIMD_P_H