mirror of
https://github.com/simdjson/simdjson
synced 2026-06-08 17:27:07 +00:00
Daniel Lemire
97 lines
3.8 KiB
C
97 lines
3.8 KiB
C
#ifndef SIMDJSON_IMPLEMENTATIONS_H
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#define SIMDJSON_IMPLEMENTATIONS_H
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#include "simdjson/implementation-base.h"
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//
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// First, figure out which implementations can be run. Doing it here makes it so we don't have to worry about the order
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// in which we include them.
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//
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#ifndef SIMDJSON_IMPLEMENTATION_ARM64
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#define SIMDJSON_IMPLEMENTATION_ARM64 (SIMDJSON_IS_ARM64)
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#endif
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#define SIMDJSON_CAN_ALWAYS_RUN_ARM64 SIMDJSON_IMPLEMENTATION_ARM64 && SIMDJSON_IS_ARM64
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#ifdef __has_include
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// How do we detect that a compiler supports vbmi2?
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// For sure if the following header is found, we are ok?
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#if __has_include(<avx512vbmi2intrin.h>)
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#define SIMDJSON_COMPILER_SUPPORTS_VBMI2 1
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#endif
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#endif
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#ifdef _MSC_VER
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#if _MSC_VER >= 1920
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// Visual Studio 2019 and up support VBMI2 under x64 even if the header
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// avx512vbmi2intrin.h is not found.
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#define SIMDJSON_COMPILER_SUPPORTS_VBMI2 1
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#endif
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#endif
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// By default, we allow AVX512.
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#ifndef SIMDJSON_AVX512_ALLOWED
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#define SIMDJSON_AVX512_ALLOWED 1
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#endif
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// Default Icelake to on if this is x86-64. Even if we're not compiled for it, it could be selected
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// at runtime.
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#ifndef SIMDJSON_IMPLEMENTATION_ICELAKE
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#define SIMDJSON_IMPLEMENTATION_ICELAKE ((SIMDJSON_IS_X86_64) && (SIMDJSON_AVX512_ALLOWED) && (SIMDJSON_COMPILER_SUPPORTS_VBMI2))
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#endif
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#ifdef _MSC_VER
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// To see why (__BMI__) && (__PCLMUL__) && (__LZCNT__) are not part of this next line, see
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// https://github.com/simdjson/simdjson/issues/1247
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#define SIMDJSON_CAN_ALWAYS_RUN_ICELAKE ((SIMDJSON_IMPLEMENTATION_ICELAKE) && (__AVX2__) && (__AVX512F__) && (__AVX512DQ__) && (__AVX512CD__) && (__AVX512BW__) && (__AVX512VL__) && (__AVX512VBMI2__))
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#else
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#define SIMDJSON_CAN_ALWAYS_RUN_ICELAKE ((SIMDJSON_IMPLEMENTATION_ICELAKE) && (__AVX2__) && (__BMI__) && (__PCLMUL__) && (__LZCNT__) && (__AVX512F__) && (__AVX512DQ__) && (__AVX512CD__) && (__AVX512BW__) && (__AVX512VL__) && (__AVX512VBMI2__))
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#endif
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// Default Haswell to on if this is x86-64. Even if we're not compiled for it, it could be selected
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// at runtime.
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#ifndef SIMDJSON_IMPLEMENTATION_HASWELL
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#define SIMDJSON_IMPLEMENTATION_HASWELL SIMDJSON_IS_X86_64
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#endif
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#ifdef _MSC_VER
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// To see why (__BMI__) && (__PCLMUL__) && (__LZCNT__) are not part of this next line, see
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// https://github.com/simdjson/simdjson/issues/1247
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#define SIMDJSON_CAN_ALWAYS_RUN_HASWELL ((SIMDJSON_IMPLEMENTATION_HASWELL) && (SIMDJSON_IS_X86_64) && (__AVX2__))
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#else
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#define SIMDJSON_CAN_ALWAYS_RUN_HASWELL ((SIMDJSON_IMPLEMENTATION_HASWELL) && (SIMDJSON_IS_X86_64) && (__AVX2__) && (__BMI__) && (__PCLMUL__) && (__LZCNT__))
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#endif
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// Default Westmere to on if this is x86-64. Note that the macro SIMDJSON_REQUIRES_HASWELL appears unused.
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#ifndef SIMDJSON_IMPLEMENTATION_WESTMERE
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#define SIMDJSON_IMPLEMENTATION_WESTMERE (SIMDJSON_IS_X86_64 && !SIMDJSON_REQUIRES_HASWELL)
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#endif
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#define SIMDJSON_CAN_ALWAYS_RUN_WESTMERE (SIMDJSON_IMPLEMENTATION_WESTMERE && SIMDJSON_IS_X86_64 && __SSE4_2__ && __PCLMUL__)
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#ifndef SIMDJSON_IMPLEMENTATION_PPC64
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#define SIMDJSON_IMPLEMENTATION_PPC64 (SIMDJSON_IS_PPC64)
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#endif
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#define SIMDJSON_CAN_ALWAYS_RUN_PPC64 SIMDJSON_IMPLEMENTATION_PPC64 && SIMDJSON_IS_PPC64
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// Default Fallback to on unless a builtin implementation has already been selected.
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#ifndef SIMDJSON_IMPLEMENTATION_FALLBACK
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#define SIMDJSON_IMPLEMENTATION_FALLBACK 1 // (!SIMDJSON_CAN_ALWAYS_RUN_ARM64 && !SIMDJSON_CAN_ALWAYS_RUN_HASWELL && !SIMDJSON_CAN_ALWAYS_RUN_WESTMERE && !SIMDJSON_CAN_ALWAYS_RUN_PPC64)
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#endif
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#define SIMDJSON_CAN_ALWAYS_RUN_FALLBACK SIMDJSON_IMPLEMENTATION_FALLBACK
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SIMDJSON_PUSH_DISABLE_WARNINGS
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SIMDJSON_DISABLE_UNDESIRED_WARNINGS
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// Implementations
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#include "simdjson/arm64.h"
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#include "simdjson/fallback.h"
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#include "simdjson/icelake.h"
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#include "simdjson/haswell.h"
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#include "simdjson/ppc64.h"
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#include "simdjson/westmere.h"
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// Builtin implementation
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#include "simdjson/builtin.h"
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SIMDJSON_POP_DISABLE_WARNINGS
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#endif // SIMDJSON_IMPLEMENTATIONS_H
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