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std::simd::simd build on top of VCL (#769)
* add vectorclass library https://github.com/vectorclass * hook-up std::simd using VCL * build with GCC * stdx instead of std for SIMD as it's not yet part of C++26 * SIMD unittest * SIMD unittest * build with GCC
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J. Daniel Smith
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Feb 8, 2024
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,122 @@ | ||
| /* ========================================================================= | ||
| * This file is part of coda_oss-c++ | ||
| * ========================================================================= | ||
| * | ||
| * (C) Copyright 2004 - 2014, MDA Information Systems LLC | ||
| * © Copyright 2024, Maxar Technologies, Inc. | ||
| * | ||
| * coda_oss-c++ is free software; you can redistribute it and/or modify | ||
| * it under the terms of the GNU Lesser General Public License as published by | ||
| * the Free Software Foundation; either version 3 of the License, or | ||
| * (at your option) any later version. | ||
| * | ||
| * This program is distributed in the hope that it will be useful, | ||
| * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| * GNU Lesser General Public License for more details. | ||
| * | ||
| * You should have received a copy of the GNU Lesser General Public | ||
| * License along with this program; If not, | ||
| * see <http://www.gnu.org/licenses/>. | ||
| * | ||
| */ | ||
| #pragma once | ||
|
|
||
| #include "coda_oss/CPlusPlus.h" | ||
| #include "config/disable_compiler_warnings.h" | ||
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| // This logic needs to be here rather than <std/simd> so that `coda_oss::simd` will | ||
| // be the same as `std::simd`. | ||
| #ifndef CODA_OSS_HAVE_std_simd_ | ||
| #define CODA_OSS_HAVE_std_simd_ 0 // assume no <simd> | ||
| #endif | ||
| #ifndef CODA_OSS_HAVE_experimental_simd_ | ||
| #define CODA_OSS_HAVE_experimental_simd_ 0 // assume no std::experimental::simd | ||
| #endif | ||
| #ifndef CODA_OSS_HAVE_vcl_simd_ | ||
| #define CODA_OSS_HAVE_vcl_simd_ 0 // assume no vcl::simd | ||
| #endif | ||
| #if CODA_OSS_cpp17 // __has_include | ||
| #if __has_include(<simd>) // <simd> not until C++26 (hopefully!) | ||
| #include <simd> | ||
| #undef CODA_OSS_HAVE_std_simd_ | ||
| #define CODA_OSS_HAVE_std_simd_ 1 // provided by the implementation, probably C++26 | ||
| #endif | ||
|
|
||
| /* not quite ready for experimental::simd | ||
| #if __has_include(<experimental/simd>) // G++11 | ||
| #include <experimental/simd> | ||
| #undef CODA_OSS_HAVE_experimental_simd_ | ||
| #define CODA_OSS_HAVE_experimental_simd_ 1 // provided by <experimental/simd> | ||
| #endif | ||
| */ | ||
|
|
||
| #if __has_include("vectorclass/simd/simd") // our own implementation using VCL | ||
| #ifdef VCL_NAMESPACE | ||
| #error "VCL_NAMESPACE already #define'd" | ||
| #endif | ||
|
|
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| #define VCL_NAMESPACE vcl | ||
|
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||
| // The vectorclass headers #pragma-away some warnings; be sure those don't persist | ||
| CODA_OSS_disable_warning_push | ||
| #if _MSC_VER | ||
| #pragma warning(disable: 4100) // '...': unreferenced formal parameter | ||
| #pragma warning(disable: 4127) // conditional expression is constant | ||
| #pragma warning(disable: 4244) // '...': conversion from '...' to '...', possible loss of data | ||
| #pragma warning(disable: 4723) // potential divide by 0 | ||
| #pragma warning(disable: 6001) // Using uninitialized memory '...'. | ||
| #pragma warning(disable: 26485) // Expression '...': No array to pointer decay (bounds.3). | ||
| #pragma warning(disable: 26440) // Function '...' can be declared 'noexcept' (f.6). | ||
| #pragma warning(disable: 26493) // Don't use C-style casts (type.4). | ||
| #pragma warning(disable: 26814) // The const variable '...' can be computed at compile-time. Consider using constexpr (con.5). | ||
| #pragma warning(disable: 26434) // Function '... hides a non-virtual function '...'. | ||
| #pragma warning(disable: 26429) // Symbol '...' is never tested for nullness, it can be marked as not_null (f.23). | ||
| #pragma warning(disable: 26482) // Only index into arrays using constant expressions (bounds.2). | ||
| #pragma warning(disable: 26481) // Don't use pointer arithmetic. Use span instead (bounds.1). | ||
| #pragma warning(disable: 26446) // Prefer to use gsl::at() instead of unchecked subscript operator (bounds.4). | ||
| #pragma warning(disable: 26823) // Dereferencing a possibly null pointer '...' (lifetime.1). | ||
| #pragma warning(disable: 26496) // The variable '...' does not change after construction, mark it as const (con.4). | ||
| #pragma warning(disable: 26472) // Don't use a static_cast for arithmetic conversions. Use brace initialization, gsl::narrow_cast or gsl::narrow (type.1). | ||
| #pragma warning(disable: 26494) // Variable '...' is uninitialized. Always initialize an object (type.5). | ||
| #pragma warning(disable: 26458) // Prefer to use gsl::at() instead of unchecked subscript operator (bounds.4). | ||
| #pragma warning(disable: 26497) // You can attempt to make '...' constexpr unless it contains any undefined behavior (f.4). | ||
| #pragma warning(disable: 26818) // Switch statement does not cover all cases. Consider adding a '...' label (es.79). | ||
| #pragma warning(disable: 26475) // Do not use function style casts (es.49). Prefer '...' over '...'. | ||
| #pragma warning(disable: 26477) // Use '...' rather than 0 or NULL (es.47). | ||
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| #elif defined(__GNUC__) || defined(__clang__) | ||
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| CODA_OSS_disable_warning(-Wzero-as-null-pointer-constant) | ||
| CODA_OSS_disable_warning(-Wshadow) | ||
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| #endif | ||
|
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| #include "vectorclass/version2/vectorclass.h" | ||
| #include "vectorclass/version2/vectormath_trig.h" | ||
| CODA_OSS_disable_warning_pop | ||
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| CODA_OSS_disable_warning_push | ||
| #if _MSC_VER | ||
| #pragma warning(disable: 26472) // Don't use a static_cast for arithmetic conversions. Use brace initialization, gsl::narrow_cast or gsl::narrow (type.1). | ||
| #endif | ||
| #include "vectorclass/simd/simd" | ||
| CODA_OSS_disable_warning_pop | ||
|
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||
| #undef CODA_OSS_HAVE_vcl_simd_ | ||
| #define CODA_OSS_HAVE_vcl_simd_ 1 // provided by vectorclass/simd/simd.h | ||
| #endif | ||
|
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| #endif // CODA_OSS_cpp17 | ||
|
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| namespace coda_oss | ||
| { | ||
| #if CODA_OSS_HAVE_std_simd_ | ||
| namespace simd = std::simd; | ||
| #elif CODA_OSS_HAVE_experimental_simd_ | ||
| namespace simd = std::experimental; | ||
| #elif CODA_OSS_HAVE_vcl_simd_ | ||
| namespace simd = vcl::simd; | ||
| #endif | ||
| } | ||
|
|
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,47 @@ | ||
| /* ========================================================================= | ||
| * This file is part of std-c++ | ||
| * ========================================================================= | ||
| * | ||
| * � Copyright 2023, Maxar Technologies, Inc. | ||
| * | ||
| * std-c++ is free software; you can redistribute it and/or modify | ||
| * it under the terms of the GNU Lesser General Public License as published by | ||
| * the Free Software Foundation; either version 3 of the License, or | ||
| * (at your option) any later version. | ||
| * | ||
| * This program is distributed in the hope that it will be useful, | ||
| * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| * GNU Lesser General Public License for more details. | ||
| * | ||
| * You should have received a copy of the GNU Lesser General Public | ||
| * License along with this program; If not, http://www.gnu.org/licenses/. | ||
| * | ||
| */ | ||
| #pragma once | ||
|
|
||
| #include "coda_oss/simd.h" | ||
| #include "coda_oss/CPlusPlus.h" | ||
|
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| // Calling this **stdx** (instead of *std*) for now as it hasn't yet been voted into C++26 | ||
|
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| // Make it (too?) easy for clients to get our various std:: implementations | ||
| #ifndef CODA_OSS_NO_stdx_simd | ||
| #if CODA_OSS_cpp26 | ||
| #include <simd> | ||
| #define CODA_OSS_NO_stdx_simd 1 // part of C++26 (hopefully) | ||
| #else | ||
| #define CODA_OSS_NO_stdx_simd 0 // use our own | ||
| #endif | ||
| #endif | ||
|
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| #if !CODA_OSS_NO_stdx_simd | ||
| namespace stdx // TODO: This is slightly uncouth: we're not supposed to augment "std". | ||
| { | ||
| namespace simd = coda_oss::simd; | ||
| } | ||
| //#ifndef __cpp_lib_simd | ||
| //#define __cpp_lib_simd 202402L // https://en.cppreference.com/w/cpp/feature_test#cpp_lib_simd | ||
| //#endif | ||
|
|
||
| #endif // CODA_OSS_NO_stdx_simd |
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