2020-03-30 16:36:02 +00:00
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#pragma once
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2021-10-02 07:13:14 +00:00
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#include <base/types.h>
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2020-05-15 10:10:34 +00:00
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2020-05-18 17:07:36 +00:00
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/* This file contains macros and helpers for writing platform-dependent code.
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2020-06-21 18:47:16 +00:00
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*
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* Macros DECLARE_<Arch>_SPECIFIC_CODE will wrap code inside it into the
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2020-05-18 17:07:36 +00:00
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* namespace TargetSpecific::<Arch> and enable Arch-specific compile options.
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* Thus, it's allowed to call functions inside these namespaces only after
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* checking platform in runtime (see isArchSupported() below).
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*
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* If compiler is not gcc/clang or target isn't x86_64 or ENABLE_MULTITARGET_CODE
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2020-08-08 00:47:03 +00:00
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* was set to OFF in cmake, all code inside these macros will be removed and
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2020-09-19 16:42:36 +00:00
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* USE_MULTITARGET_CODE will be set to 0. Use #if USE_MULTITARGET_CODE whenever you
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* use anything from this namespaces.
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*
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* For similarities there is a macros DECLARE_DEFAULT_CODE, which wraps code
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* into the namespace TargetSpecific::Default but doesn't specify any additional
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* copile options. Functions and classes inside this macros are available regardless
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* of USE_MUTLITARGE_CODE.
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*
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* Example of usage:
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*
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* DECLARE_DEFAULT_CODE (
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* int funcImpl() {
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* return 1;
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* }
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* ) // DECLARE_DEFAULT_CODE
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*
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* DECLARE_AVX2_SPECIFIC_CODE (
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* int funcImpl() {
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* return 2;
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* }
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* ) // DECLARE_DEFAULT_CODE
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*
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* int func() {
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* #if USE_MULTITARGET_CODE
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* if (isArchSupported(TargetArch::AVX2))
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* return TargetSpecific::AVX2::funcImpl();
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* #endif
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* return TargetSpecific::Default::funcImpl();
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* }
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*
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* Sometimes code may benefit from compiling with different options.
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* For these purposes use DECLARE_MULTITARGET_CODE macros. It will create a copy
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* of the code for every supported target and compile it with different options.
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* These copies are available via TargetSpecific namespaces described above.
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*
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* Inside every TargetSpecific namespace there is a constexpr variable BuildArch,
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* which indicates the target platform for current code.
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*
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* Example:
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*
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* DECLARE_MULTITARGET_CODE(
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* int funcImpl(int size, ...) {
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* int iteration_size = 1;
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* if constexpr (BuildArch == TargetArch::SSE42)
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* iteration_size = 2
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* else if constexpr (BuildArch == TargetArch::AVX || BuildArch == TargetArch::AVX2)
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* iteration_size = 4;
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* for (int i = 0; i < size; i += iteration_size)
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* ...
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* }
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* ) // DECLARE_MULTITARGET_CODE
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*
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* // All target-specific and default implementations are available here via
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* TargetSpecific::<Arch>::funcImpl. Use runtime detection to choose one.
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*
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* If you want to write IFunction or IExecutableFuncionImpl with several implementations
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* see PerformanceAdaptors.h.
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*/
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namespace DB
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{
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enum class TargetArch : UInt32
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{
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Default = 0, /// Without any additional compiler options.
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SSE42 = (1 << 0), /// SSE4.2
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AVX = (1 << 1),
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AVX2 = (1 << 2),
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AVX512F = (1 << 3),
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AVX512BW = (1 << 4),
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AVX512VBMI = (1 << 5),
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};
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/// Runtime detection.
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bool isArchSupported(TargetArch arch);
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String toString(TargetArch arch);
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2022-07-17 04:01:53 +00:00
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#ifndef ENABLE_MULTITARGET_CODE
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# define ENABLE_MULTITARGET_CODE 0
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#endif
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#if ENABLE_MULTITARGET_CODE && defined(__GNUC__) && defined(__x86_64__)
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2022-03-12 18:05:50 +00:00
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/// NOLINTNEXTLINE
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#define USE_MULTITARGET_CODE 1
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#if defined(__clang__)
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#define AVX512VBMI_FUNCTION_SPECIFIC_ATTRIBUTE __attribute__((target("sse,sse2,sse3,ssse3,sse4,popcnt,avx,avx2,avx512f,avx512bw,avx512vl,avx512vbmi")))
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#define AVX512BW_FUNCTION_SPECIFIC_ATTRIBUTE __attribute__((target("sse,sse2,sse3,ssse3,sse4,popcnt,avx,avx2,avx512f,avx512bw")))
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#define AVX512_FUNCTION_SPECIFIC_ATTRIBUTE __attribute__((target("sse,sse2,sse3,ssse3,sse4,popcnt,avx,avx2,avx512f")))
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#define AVX2_FUNCTION_SPECIFIC_ATTRIBUTE __attribute__((target("sse,sse2,sse3,ssse3,sse4,popcnt,avx,avx2")))
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#define AVX_FUNCTION_SPECIFIC_ATTRIBUTE __attribute__((target("sse,sse2,sse3,ssse3,sse4,popcnt,avx"))
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#define SSE42_FUNCTION_SPECIFIC_ATTRIBUTE __attribute__((target("sse,sse2,sse3,ssse3,sse4,popcnt")))
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#define DEFAULT_FUNCTION_SPECIFIC_ATTRIBUTE
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# define BEGIN_AVX512VBMI_SPECIFIC_CODE \
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_Pragma("clang attribute push(__attribute__((target(\"sse,sse2,sse3,ssse3,sse4,popcnt,avx,avx2,avx512f,avx512bw,avx512vl,avx512vbmi\"))),apply_to=function)")
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# define BEGIN_AVX512BW_SPECIFIC_CODE \
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_Pragma("clang attribute push(__attribute__((target(\"sse,sse2,sse3,ssse3,sse4,popcnt,avx,avx2,avx512f,avx512bw\"))),apply_to=function)")
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# define BEGIN_AVX512F_SPECIFIC_CODE \
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_Pragma("clang attribute push(__attribute__((target(\"sse,sse2,sse3,ssse3,sse4,popcnt,avx,avx2,avx512f\"))),apply_to=function)")
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# define BEGIN_AVX2_SPECIFIC_CODE \
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_Pragma("clang attribute push(__attribute__((target(\"sse,sse2,sse3,ssse3,sse4,popcnt,avx,avx2\"))),apply_to=function)")
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# define BEGIN_AVX_SPECIFIC_CODE \
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_Pragma("clang attribute push(__attribute__((target(\"sse,sse2,sse3,ssse3,sse4,popcnt,avx\"))),apply_to=function)")
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# define BEGIN_SSE42_SPECIFIC_CODE \
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_Pragma("clang attribute push(__attribute__((target(\"sse,sse2,sse3,ssse3,sse4,popcnt\"))),apply_to=function)")
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# define END_TARGET_SPECIFIC_CODE \
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_Pragma("clang attribute pop")
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/* Clang shows warning when there aren't any objects to apply pragma.
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* To prevent this warning we define this function inside every macros with pragmas.
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*/
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# define DUMMY_FUNCTION_DEFINITION [[maybe_unused]] void _dummy_function_definition();
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#else
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#define AVX512VBMI_FUNCTION_SPECIFIC_ATTRIBUTE __attribute__((target("sse,sse2,sse3,ssse3,sse4,popcnt,avx,avx2,avx512f,avx512bw,avx512vl,avx512vbmi,tune=native")))
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#define AVX512BW_FUNCTION_SPECIFIC_ATTRIBUTE __attribute__((target("sse,sse2,sse3,ssse3,sse4,popcnt,avx,avx2,avx512f,avx512bw,tune=native")))
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#define AVX512_FUNCTION_SPECIFIC_ATTRIBUTE __attribute__((target("sse,sse2,sse3,ssse3,sse4,popcnt,avx,avx2,avx512f,tune=native")))
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#define AVX2_FUNCTION_SPECIFIC_ATTRIBUTE __attribute__((target("sse,sse2,sse3,ssse3,sse4,popcnt,avx,avx2,tune=native")))
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#define AVX_FUNCTION_SPECIFIC_ATTRIBUTE __attribute__((target("sse,sse2,sse3,ssse3,sse4,popcnt,avx,tune=native")))
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#define SSE42_FUNCTION_SPECIFIC_ATTRIBUTE __attribute__((target("sse,sse2,sse3,ssse3,sse4,popcnt",tune=native)))
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#define DEFAULT_FUNCTION_SPECIFIC_ATTRIBUTE
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# define BEGIN_AVX512VBMI_SPECIFIC_CODE \
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_Pragma("GCC push_options") \
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_Pragma("GCC target(\"sse,sse2,sse3,ssse3,sse4,popcnt,avx,avx2,avx512f,avx512bw,avx512vl,avx512vbmi,tune=native\")")
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# define BEGIN_AVX512BW_SPECIFIC_CODE \
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_Pragma("GCC push_options") \
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_Pragma("GCC target(\"sse,sse2,sse3,ssse3,sse4,popcnt,avx,avx2,avx512f,avx512bw,tune=native\")")
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# define BEGIN_AVX512F_SPECIFIC_CODE \
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_Pragma("GCC push_options") \
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_Pragma("GCC target(\"sse,sse2,sse3,ssse3,sse4,popcnt,avx,avx2,avx512f,tune=native\")")
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# define BEGIN_AVX2_SPECIFIC_CODE \
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_Pragma("GCC push_options") \
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_Pragma("GCC target(\"sse,sse2,sse3,ssse3,sse4,popcnt,avx,avx2,tune=native\")")
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# define BEGIN_AVX_SPECIFIC_CODE \
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_Pragma("GCC push_options") \
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_Pragma("GCC target(\"sse,sse2,sse3,ssse3,sse4,popcnt,avx,tune=native\")")
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# define BEGIN_SSE42_SPECIFIC_CODE \
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_Pragma("GCC push_options") \
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_Pragma("GCC target(\"sse,sse2,sse3,ssse3,sse4,popcnt,tune=native\")")
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# define END_TARGET_SPECIFIC_CODE \
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_Pragma("GCC pop_options")
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/* GCC doesn't show such warning, we don't need to define anything.
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*/
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# define DUMMY_FUNCTION_DEFINITION
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#endif
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2020-05-16 15:43:05 +00:00
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#define DECLARE_SSE42_SPECIFIC_CODE(...) \
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BEGIN_SSE42_SPECIFIC_CODE \
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namespace TargetSpecific::SSE42 { \
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DUMMY_FUNCTION_DEFINITION \
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using namespace DB::TargetSpecific::SSE42; \
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__VA_ARGS__ \
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} \
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END_TARGET_SPECIFIC_CODE
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2020-04-02 13:48:14 +00:00
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#define DECLARE_AVX_SPECIFIC_CODE(...) \
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BEGIN_AVX_SPECIFIC_CODE \
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namespace TargetSpecific::AVX { \
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DUMMY_FUNCTION_DEFINITION \
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using namespace DB::TargetSpecific::AVX; \
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__VA_ARGS__ \
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} \
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END_TARGET_SPECIFIC_CODE
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2020-04-02 13:48:14 +00:00
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#define DECLARE_AVX2_SPECIFIC_CODE(...) \
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BEGIN_AVX2_SPECIFIC_CODE \
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namespace TargetSpecific::AVX2 { \
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DUMMY_FUNCTION_DEFINITION \
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using namespace DB::TargetSpecific::AVX2; \
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__VA_ARGS__ \
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} \
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END_TARGET_SPECIFIC_CODE
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2020-05-15 12:00:20 +00:00
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#define DECLARE_AVX512F_SPECIFIC_CODE(...) \
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BEGIN_AVX512F_SPECIFIC_CODE \
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namespace TargetSpecific::AVX512F { \
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DUMMY_FUNCTION_DEFINITION \
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using namespace DB::TargetSpecific::AVX512F; \
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__VA_ARGS__ \
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} \
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END_TARGET_SPECIFIC_CODE
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#define DECLARE_AVX512BW_SPECIFIC_CODE(...) \
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BEGIN_AVX512BW_SPECIFIC_CODE \
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namespace TargetSpecific::AVX512BW { \
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DUMMY_FUNCTION_DEFINITION \
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using namespace DB::TargetSpecific::AVX512BW; \
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__VA_ARGS__ \
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} \
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END_TARGET_SPECIFIC_CODE
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2022-07-15 07:01:16 +00:00
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#define DECLARE_AVX512VBMI_SPECIFIC_CODE(...) \
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BEGIN_AVX512VBMI_SPECIFIC_CODE \
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namespace TargetSpecific::AVX512VBMI { \
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DUMMY_FUNCTION_DEFINITION \
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using namespace DB::TargetSpecific::AVX512VBMI; \
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__VA_ARGS__ \
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} \
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END_TARGET_SPECIFIC_CODE
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2020-05-16 19:30:00 +00:00
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#else
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#define USE_MULTITARGET_CODE 0
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/* Multitarget code is disabled, just delete target-specific code.
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*/
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#define DECLARE_SSE42_SPECIFIC_CODE(...)
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#define DECLARE_AVX_SPECIFIC_CODE(...)
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#define DECLARE_AVX2_SPECIFIC_CODE(...)
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#define DECLARE_AVX512F_SPECIFIC_CODE(...)
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2022-06-02 09:19:46 +00:00
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#define DECLARE_AVX512BW_SPECIFIC_CODE(...)
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2022-07-15 07:01:16 +00:00
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#define DECLARE_AVX512VBMI_SPECIFIC_CODE(...)
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2020-05-16 19:30:00 +00:00
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#endif
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#define DECLARE_DEFAULT_CODE(...) \
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namespace TargetSpecific::Default { \
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using namespace DB::TargetSpecific::Default; \
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__VA_ARGS__ \
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}
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2022-03-12 18:05:50 +00:00
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/// NOLINTNEXTLINE
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2020-04-02 13:48:14 +00:00
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#define DECLARE_MULTITARGET_CODE(...) \
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2020-05-15 12:00:20 +00:00
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DECLARE_DEFAULT_CODE (__VA_ARGS__) \
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2020-05-16 15:43:05 +00:00
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DECLARE_SSE42_SPECIFIC_CODE (__VA_ARGS__) \
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2020-05-15 12:00:20 +00:00
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DECLARE_AVX_SPECIFIC_CODE (__VA_ARGS__) \
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DECLARE_AVX2_SPECIFIC_CODE (__VA_ARGS__) \
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2022-06-02 09:19:46 +00:00
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DECLARE_AVX512F_SPECIFIC_CODE(__VA_ARGS__) \
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2022-09-25 15:03:52 +00:00
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DECLARE_AVX512BW_SPECIFIC_CODE(__VA_ARGS__) \
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DECLARE_AVX512VBMI_SPECIFIC_CODE(__VA_ARGS__)
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2020-03-30 16:36:02 +00:00
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DECLARE_DEFAULT_CODE(
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2022-03-12 18:05:50 +00:00
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constexpr auto BuildArch = TargetArch::Default; /// NOLINT
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2020-03-30 16:36:02 +00:00
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) // DECLARE_DEFAULT_CODE
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2020-05-16 15:43:05 +00:00
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DECLARE_SSE42_SPECIFIC_CODE(
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2022-03-12 18:05:50 +00:00
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constexpr auto BuildArch = TargetArch::SSE42; /// NOLINT
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2020-05-16 15:43:05 +00:00
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) // DECLARE_SSE42_SPECIFIC_CODE
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2020-03-30 16:36:02 +00:00
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DECLARE_AVX_SPECIFIC_CODE(
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2022-03-12 18:05:50 +00:00
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constexpr auto BuildArch = TargetArch::AVX; /// NOLINT
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2020-03-30 16:36:02 +00:00
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) // DECLARE_AVX_SPECIFIC_CODE
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DECLARE_AVX2_SPECIFIC_CODE(
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2022-03-12 18:05:50 +00:00
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constexpr auto BuildArch = TargetArch::AVX2; /// NOLINT
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2020-03-30 16:36:02 +00:00
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) // DECLARE_AVX2_SPECIFIC_CODE
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2020-05-15 12:00:20 +00:00
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DECLARE_AVX512F_SPECIFIC_CODE(
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2022-03-12 18:05:50 +00:00
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constexpr auto BuildArch = TargetArch::AVX512F; /// NOLINT
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2020-05-15 12:00:20 +00:00
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) // DECLARE_AVX512F_SPECIFIC_CODE
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2020-03-30 16:36:02 +00:00
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2022-06-02 09:19:46 +00:00
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DECLARE_AVX512BW_SPECIFIC_CODE(
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constexpr auto BuildArch = TargetArch::AVX512BW; /// NOLINT
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) // DECLARE_AVX512BW_SPECIFIC_CODE
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2022-07-15 07:01:16 +00:00
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DECLARE_AVX512VBMI_SPECIFIC_CODE(
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constexpr auto BuildArch = TargetArch::AVX512VBMI; /// NOLINT
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) // DECLARE_AVX512VBMI_SPECIFIC_CODE
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2022-05-16 15:05:16 +00:00
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/** Runtime Dispatch helpers for class members.
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*
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* Example of usage:
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*
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* class TestClass
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* {
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* public:
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2022-05-24 12:25:29 +00:00
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* MULTITARGET_FUNCTION_AVX2_SSE42(
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* MULTITARGET_FUNCTION_HEADER(int), testFunctionImpl, MULTITARGET_FUNCTION_BODY((int value)
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2022-05-16 15:05:16 +00:00
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* {
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* return value;
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* })
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* )
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*
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* void testFunction(int value) {
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* if (isArchSupported(TargetArch::AVX2))
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* {
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* testFunctionImplAVX2(value);
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* }
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* else if (isArchSupported(TargetArch::SSE42))
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* {
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* testFunctionImplSSE42(value);
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* }
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* else
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* {
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* testFunction(value);
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* }
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* }
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*};
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*
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*/
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/// Function header
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2022-05-24 12:25:29 +00:00
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#define MULTITARGET_FUNCTION_HEADER(...) __VA_ARGS__
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2022-05-16 15:05:16 +00:00
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/// Function body
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2022-05-24 12:25:29 +00:00
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#define MULTITARGET_FUNCTION_BODY(...) __VA_ARGS__
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2022-05-16 15:05:16 +00:00
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#if ENABLE_MULTITARGET_CODE && defined(__GNUC__) && defined(__x86_64__)
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/// NOLINTNEXTLINE
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2022-05-24 12:25:29 +00:00
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#define MULTITARGET_FUNCTION_AVX2_SSE42(FUNCTION_HEADER, name, FUNCTION_BODY) \
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2022-05-16 15:05:16 +00:00
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FUNCTION_HEADER \
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\
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AVX2_FUNCTION_SPECIFIC_ATTRIBUTE \
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name##AVX2 \
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FUNCTION_BODY \
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\
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FUNCTION_HEADER \
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\
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2022-05-17 14:59:11 +00:00
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SSE42_FUNCTION_SPECIFIC_ATTRIBUTE \
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2022-05-16 15:05:16 +00:00
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name##SSE42 \
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FUNCTION_BODY \
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\
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FUNCTION_HEADER \
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\
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name \
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FUNCTION_BODY \
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#else
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/// NOLINTNEXTLINE
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2022-05-24 12:25:29 +00:00
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#define MULTITARGET_FUNCTION_AVX2_SSE42(FUNCTION_HEADER, name, FUNCTION_BODY) \
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2022-05-16 15:05:16 +00:00
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FUNCTION_HEADER \
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\
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name \
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FUNCTION_BODY \
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#endif
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2020-05-16 06:59:08 +00:00
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}
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