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// Copyright (C) 2020 The Qt Company Ltd.
// Copyright (C) 2022 Intel Corporation.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#ifndef QSIMD_H
#define QSIMD_H
#include <QtCore/qglobal.h>
/*
* qconfig.h defines the QT_COMPILER_SUPPORTS_XXX macros.
* They mean the compiler supports the necessary flags and the headers
* for the x86 and ARM intrinsics.
*
* Supported instruction set extensions are:
* Flag | Arch
* neon | ARM
* mips_dsp | mips
* mips_dspr2 | mips
* sse2 | x86
* sse4_1 | x86
* sse4_2 | x86
* avx | x86
*
* Code can use the following constructs to determine compiler support & status:
* - #if QT_COMPILER_USES(XXX) (e.g: #if QT_COMPILER_USES(neon) or QT_COMPILER_USES(sse4_1)
* If this test passes, then the compiler is already generating code using the
* given instruction set. The intrinsics for those instructions are
* #included and can be used without restriction or runtime check.
*
* Code that requires runtime detection and different code paths at runtime is
* currently not supported here, have a look at qsimd_p.h for support.
*/
#define QT_COMPILER_USES(feature) (1/QT_COMPILER_USES_##feature == 1)
#if defined(Q_PROCESSOR_ARM) && defined(__ARM_NEON) || defined(__ARM_NEON__)
# include <arm_neon.h>
# define QT_COMPILER_USES_neon 1
#else
# define QT_COMPILER_USES_neon -1
#endif
#if defined(Q_PROCESSOR_MIPS) && (defined(__MIPS_DSP__) || (defined(__mips_dsp) && defined(Q_PROCESSOR_MIPS_32)))
# define QT_COMPILER_USES_mips_dsp 1
#else
# define QT_COMPILER_USES_mips_dsp -1
#endif
#if defined(Q_PROCESSOR_MIPS) && (defined(__MIPS_DSPR2__) || (defined(__mips_dspr2) && defined(Q_PROCESSOR_MIPS_32)))
# define QT_COMPILER_USES_mips_dspr2 1
#else
# define QT_COMPILER_USES_mips_dspr2 -1
#endif
#if defined(Q_PROCESSOR_X86) && defined(Q_CC_MSVC)
// MSVC doesn't define __SSE2__, so do it ourselves
# if (defined(_M_X64) || _M_IX86_FP >= 2) && defined(QT_COMPILER_SUPPORTS_SSE2)
# define __SSE__ 1
# define __SSE2__ 1
# endif
# if (defined(_M_AVX) || defined(__AVX__))
// Visual Studio defines __AVX__ when /arch:AVX is passed, but not the earlier macros
// See: https://msdn.microsoft.com/en-us/library/b0084kay.aspx
# define __SSE3__ 1
# define __SSSE3__ 1
# define __SSE4_1__ 1
# define __SSE4_2__ 1
# define __POPCNT__ 1
# ifndef __AVX__
# define __AVX__ 1
# endif
# endif
# ifdef __SSE2__
# define QT_VECTORCALL __vectorcall
# endif
# ifdef __AVX2__
// MSVC defines __AVX2__ with /arch:AVX2
# define __F16C__ 1
# define __RDRND__ 1
# define __FMA__ 1
# define __BMI__ 1
# define __BMI2__ 1
# define __MOVBE__ 1
# define __LZCNT__ 1
# endif
// Starting with /arch:AVX512, MSVC defines all the macros
#endif
#if defined(Q_PROCESSOR_X86) && defined(__SSE2__)
# include <immintrin.h>
# define QT_COMPILER_USES_sse2 1
#else
# define QT_COMPILER_USES_sse2 -1
#endif
#if defined(Q_PROCESSOR_X86) && defined(__SSE3__)
# define QT_COMPILER_USES_sse3 1
#else
# define QT_COMPILER_USES_sse3 -1
#endif
#if defined(Q_PROCESSOR_X86) && defined(__SSSE3__)
# define QT_COMPILER_USES_ssse3 1
#else
# define QT_COMPILER_USES_ssse3 -1
#endif
#if defined(Q_PROCESSOR_X86) && defined(__SSE4_1__)
# define QT_COMPILER_USES_sse4_1 1
#else
# define QT_COMPILER_USES_sse4_1 -1
#endif
#if defined(Q_PROCESSOR_X86) && defined(__SSE4_2__)
# define QT_COMPILER_USES_sse4_2 1
#else
# define QT_COMPILER_USES_sse4_2 -1
#endif
#if defined(Q_PROCESSOR_X86) && defined(__AVX__)
# define QT_COMPILER_USES_avx 1
#else
# define QT_COMPILER_USES_avx -1
#endif
#ifndef QT_VECTORCALL
#define QT_VECTORCALL
#endif
QT_BEGIN_NAMESPACE
QT_END_NAMESPACE
#endif // QSIMD_H
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