mirror of
https://github.com/matrix-construct/construct
synced 2024-11-13 21:41:06 +01:00
124 lines
2.2 KiB
C++
124 lines
2.2 KiB
C++
// The Construct
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//
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// Copyright (C) The Construct Developers, Authors & Contributors
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// Copyright (C) 2016-2020 Jason Volk <jason@zemos.net>
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//
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// Permission to use, copy, modify, and/or distribute this software for any
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// purpose with or without fee is hereby granted, provided that the above
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// copyright notice and this permission notice is present in all copies. The
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// full license for this software is available in the LICENSE file.
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#pragma once
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#define HAVE_IRCD_SIMD_TRAITS_H
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namespace ircd::simd
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{
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template<class T>
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static constexpr size_t lanes();
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template<class U,
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class T>
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static constexpr bool is_lane_same();
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template<class U,
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class T>
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static constexpr bool is_lane_base_of();
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template<class T>
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static constexpr bool is_lane_integral();
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template<class T>
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static constexpr bool is_lane_floating();
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template<class T>
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T mask_full();
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constexpr auto alignment
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{
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support::avx512f? 64:
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support::avx? 32:
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support::sse? 16:
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8
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};
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}
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template<class T>
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[[gnu::const]]
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inline T
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ircd::simd::mask_full()
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{
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if constexpr(is_lane_floating<T>())
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return T{};
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else
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return ~T{0};
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}
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template<class T>
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constexpr bool
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ircd::simd::is_lane_floating()
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{
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return std::is_floating_point<lane_type<T>>::value;
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}
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template<class T>
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constexpr bool
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ircd::simd::is_lane_integral()
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{
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return std::is_integral<lane_type<T>>::value;
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}
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template<class U,
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class T>
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constexpr bool
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ircd::simd::is_lane_same()
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{
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return std::is_same<U, lane_type<T>>::value;
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}
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template<class U,
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class T>
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constexpr bool
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ircd::simd::is_lane_base_of()
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{
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return std::is_base_of<U, lane_type<T>>::value;
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}
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/// Get number of lanes for vector type (the number after the x in the
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/// type name).
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template<class T>
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constexpr size_t
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ircd::simd::lanes()
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{
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constexpr size_t ret
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{
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sizeof(T) / sizeof_lane<T>()
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};
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static_assert
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(
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sizeof(T) <= 64 && ret <= 64 && ret > 0
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);
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return ret;
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}
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template<>
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constexpr size_t
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ircd::simd::sizeof_lane<ircd::u128x1>()
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{
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return 16;
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}
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template<>
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constexpr size_t
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ircd::simd::sizeof_lane<ircd::u256x1>()
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{
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return 32;
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}
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template<>
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constexpr size_t
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ircd::simd::sizeof_lane<ircd::u512x1>()
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{
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return 64;
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}
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