Vc/common/vectorabi.h

0001 /*  This file is part of the Vc library. {{{
0002 Copyright © 2015 Matthias Kretz <kretz@kde.org>
0003
0004 Redistribution and use in source and binary forms, with or without
0005 modification, are permitted provided that the following conditions are met:
0006     * Redistributions of source code must retain the above copyright
0007       notice, this list of conditions and the following disclaimer.
0008     * Redistributions in binary form must reproduce the above copyright
0009       notice, this list of conditions and the following disclaimer in the
0010       documentation and/or other materials provided with the distribution.
0011     * Neither the names of contributing organizations nor the
0012       names of its contributors may be used to endorse or promote products
0013       derived from this software without specific prior written permission.
0014
0015 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
0016 ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
0017 WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
0018 DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE FOR ANY
0019 DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
0020 (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
0021 LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
0022 ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
0023 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
0024 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
0025
0026 }}}*/
0027
0028 #ifndef VC_COMMON_VECTORABI_H_
0029 #define VC_COMMON_VECTORABI_H_
0030
0031 namespace Vc_VERSIONED_NAMESPACE
0032 {
0033 namespace VectorAbi
0034 {
0035 template <typename T>
0036 using Avx1Abi = typename std::conditional<std::is_integral<T>::value, VectorAbi::Sse,
0037                                           VectorAbi::Avx>::type;
0038
0039 template <typename T> struct DeduceCompatible {
0040 #ifdef __x86_64__
0041     using type = Sse;
0042 #else
0043     using type = Scalar;
0044 #endif
0045 };
0046
0047 template <typename T>
0048 struct DeduceBest {
0049     using type = typename std::conditional<
0050         CurrentImplementation::is(ScalarImpl), Scalar,
0051         typename std::conditional<
0052             CurrentImplementation::is_between(SSE2Impl, SSE42Impl), Sse,
0053             typename std::conditional<
0054                 CurrentImplementation::is(AVXImpl), Avx1Abi<T>,
0055                 typename std::conditional<CurrentImplementation::is(AVX2Impl), Avx,
0056                                           void>::type>::type>::type>::type;
0057 };
0058 template <typename T> using Best = typename DeduceBest<T>::type;
0059 }  // namespace VectorAbi
0060 }  // namespace Vc_VERSIONED_NAMESPACE
0061
0062 #include "simdarrayfwd.h"
0063
0064 namespace Vc_VERSIONED_NAMESPACE
0065 {
0066 namespace detail
0067 {
0068 // is_fixed_size_abi {{{
0069 template <class T> struct is_fixed_size_abi : std::false_type {
0070 };
0071 template <int N> struct is_fixed_size_abi<simd_abi::fixed_size<N>> : std::true_type {
0072 };
0073 //}}}
0074
0075 template <class T>
0076 using not_fixed_size_abi = typename std::enable_if<!is_fixed_size_abi<T>::value, T>::type;
0077
0078 }  // namespace detail
0079 }  // namespace Vc
0080
0081 #endif  // VC_COMMON_VECTORABI_H_
0082
0083 // vim: foldmethod=marker