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/****************************************************************************
**
** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/
**
** This file is part of the QtCore module 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.
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QSIMD_P_H
#define QSIMD_P_H
#include <qglobal.h>
QT_BEGIN_HEADER
/*
* qt_module_config.prf defines the QT_COMPILER_SUPPORTS_XXX macros.
* They mean the compiler supports the necessary flags and the headers
* for the x86 and ARM intrinsics:
* - GCC: the -mXXX or march=YYY flag is necessary before #include
* - Intel CC: #include can happen unconditionally
* - MSVC: #include can happen unconditionally
* - RVCT: ???
*
* We will try to include all headers possible under this configuration.
*
* MSVC does not define __SSE2__ & family, so we will define them.
*
* Supported XXX are:
* Flag | Arch | GCC | Intel CC | MSVC |
* NEON | ARM | I & C | None | ? |
* IWMMXT | ARM | I & C | None | I & C |
* SSE2 | x86 | I & C | I & C | I & C |
* SSE3 | x86 | I & C | I & C | I only |
* SSSE3 | x86 | I & C | I & C | I only |
* SSE4_1 | x86 | I & C | I & C | I only |
* SSE4_2 | x86 | I & C | I & C | I only |
* AVX | x86 | I & C | I & C | I & C |
* AVX2 | x86 | I & C | I & C | I only |
* I = intrinsics; C = code generation
*/
#ifdef __MINGW64_VERSION_MAJOR
#include <intrin.h>
#endif
// SSE intrinsics
#if defined(__SSE2__) || (defined(QT_COMPILER_SUPPORTS_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
# include <emmintrin.h>
#endif
#if defined(Q_CC_MSVC) && (defined(_M_X64) || _M_IX86_FP >= 2)
# define __SSE__ 1
# define __SSE2__ 1
#endif
#endif
// SSE3 intrinsics
#if defined(__SSE3__) || (defined(QT_COMPILER_SUPPORTS_SSE3) && defined(Q_CC_MSVC))
#include <pmmintrin.h>
#endif
// SSSE3 intrinsics
#if defined(__SSSE3__) || (defined(QT_COMPILER_SUPPORTS_SSSE3) && defined(Q_CC_MSVC))
#include <tmmintrin.h>
#endif
// SSE4.1 intrinsics
#if defined(__SSE4_1__) || (defined(QT_COMPILER_SUPPORTS_SSE4_1) && defined(Q_CC_MSVC))
#include <smmintrin.h>
#endif
// SSE4.2 intrinsics
#if defined(__SSE4_2__) || (defined(QT_COMPILER_SUPPORTS_SSE4_2) && defined(Q_CC_MSVC))
#include <nmmintrin.h>
#endif
// AVX intrinsics
#if defined(__AVX__) || (defined(QT_COMPILER_SUPPORTS_AVX) && defined(Q_CC_MSVC))
// immintrin.h is the ultimate header, we don't need anything else after this
#include <immintrin.h>
# if defined(Q_CC_MSVC) && defined(_M_AVX)
// MS Visual Studio 2010 has no macro pre-defined to identify the use of /arch:AVX
// See: http://connect.microsoft.com/VisualStudio/feedback/details/605858/arch-avx-should-define-a-predefined-macro-in-x64-and-set-a-unique-value-for-m-ix86-fp-in-win32
// When such a macro exists, add it above, replacing _M_AVX as appropriate
# define __SSE3__ 1
# define __SSSE3__ 1
// no Intel CPU supports SSE4a, so don't define it
# define __SSE4_1__ 1
# define __SSE4_2__ 1
# define __AVX__ 1
# ifdef _M_AVX2
// replace the macro above with the proper MS macro when it exists
// All processors with AVX2 will support BMI1 and FMA
# define __AVX2__ 1
# define __BMI__ 1
# define __FMA__ 1
# endif
# endif
#endif
// NEON intrinsics
#if defined __ARM_NEON__
#include <arm_neon.h>
#endif
// IWMMXT intrinsics
#if defined(QT_COMPILER_SUPPORTS_IWMMXT)
#include <mmintrin.h>
#if defined(Q_OS_WINCE)
# include "qplatformdefs.h"
#endif
#endif
#if defined(QT_COMPILER_SUPPORTS_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
QT_BEGIN_NAMESPACE
enum CPUFeatures {
None = 0,
IWMMXT = 0x1,
NEON = 0x2,
SSE2 = 0x4,
SSE3 = 0x8,
SSSE3 = 0x10,
SSE4_1 = 0x20,
SSE4_2 = 0x40,
AVX = 0x80,
AVX2 = 0x100,
HLE = 0x200,
RTM = 0x400
};
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
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