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More safe CPU dispatching

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This commit is contained in:
Alexey Milovidov 2021-04-13 21:54:46 +03:00
parent b00c66cb36
commit fb98915435
4 changed files with 175 additions and 0 deletions
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10
src/Functions/divide/CMakeLists.txt Normal file
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add_library(divide_impl_sse2 divideImpl.cpp)
target_compile_options(divide_impl_sse2 PRIVATE -msse2 -DNAMESPACE=SSE2)
target_link_libraries(divide_impl_sse2 libdivide)
add_library(divide_impl_avx2 divideImpl.cpp)
target_compile_options(divide_impl_avx2 PRIVATE -mavx2 -DNAMESPACE=AVX2)
target_link_libraries(divide_impl_avx2 libdivide)
add_library(divide_impl divide.cpp)
target_link_libraries(divide_impl divide_impl_sse2 divide_impl_avx2 clickhouse_common_io)

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src/Functions/divide/divide.cpp Normal file
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#include "divide.h"
#include <Common/CpuId.h>
namespace SSE2
{
template <typename A, typename B, typename ResultType>
void divideImpl(const A * __restrict a_pos, B b, ResultType * __restrict c_pos, size_t size);
}
namespace AVX2
{
template <typename A, typename B, typename ResultType>
void divideImpl(const A * __restrict a_pos, B b, ResultType * __restrict c_pos, size_t size);
}
template <typename A, typename B, typename ResultType>
void divideImpl(const A * __restrict a_pos, B b, ResultType * __restrict c_pos, size_t size)
{
if (DB::Cpu::CpuFlagsCache::have_AVX2)
AVX2::divideImpl(a_pos, b, c_pos, size);
else if (DB::Cpu::CpuFlagsCache::have_SSE2)
SSE2::divideImpl(a_pos, b, c_pos, size);
}
template void divideImpl<uint64_t, uint64_t, uint64_t>(const uint64_t * __restrict, uint64_t, uint64_t * __restrict, size_t);
template void divideImpl<uint64_t, uint32_t, uint64_t>(const uint64_t * __restrict, uint32_t, uint64_t * __restrict, size_t);
template void divideImpl<uint64_t, uint16_t, uint64_t>(const uint64_t * __restrict, uint16_t, uint64_t * __restrict, size_t);
template void divideImpl<uint64_t, char8_t, uint64_t>(const uint64_t * __restrict, char8_t, uint64_t * __restrict, size_t);
template void divideImpl<uint32_t, uint64_t, uint32_t>(const uint32_t * __restrict, uint64_t, uint32_t * __restrict, size_t);
template void divideImpl<uint32_t, uint32_t, uint32_t>(const uint32_t * __restrict, uint32_t, uint32_t * __restrict, size_t);
template void divideImpl<uint32_t, uint16_t, uint32_t>(const uint32_t * __restrict, uint16_t, uint32_t * __restrict, size_t);
template void divideImpl<uint32_t, char8_t, uint32_t>(const uint32_t * __restrict, char8_t, uint32_t * __restrict, size_t);
template void divideImpl<int64_t, uint64_t, int64_t>(const int64_t * __restrict, uint64_t, int64_t * __restrict, size_t);
template void divideImpl<int64_t, uint32_t, int64_t>(const int64_t * __restrict, uint32_t, int64_t * __restrict, size_t);
template void divideImpl<int64_t, uint16_t, int64_t>(const int64_t * __restrict, uint16_t, int64_t * __restrict, size_t);
template void divideImpl<int64_t, char8_t, int64_t>(const int64_t * __restrict, char8_t, int64_t * __restrict, size_t);
template void divideImpl<int32_t, uint64_t, int32_t>(const int32_t * __restrict, uint64_t, int32_t * __restrict, size_t);
template void divideImpl<int32_t, uint32_t, int32_t>(const int32_t * __restrict, uint32_t, int32_t * __restrict, size_t);
template void divideImpl<int32_t, uint16_t, int32_t>(const int32_t * __restrict, uint16_t, int32_t * __restrict, size_t);
template void divideImpl<int32_t, char8_t, int32_t>(const int32_t * __restrict, char8_t, int32_t * __restrict, size_t);
template void divideImpl<uint64_t, int64_t, uint64_t>(const uint64_t * __restrict, int64_t, uint64_t * __restrict, size_t);
template void divideImpl<uint64_t, int32_t, uint64_t>(const uint64_t * __restrict, int32_t, uint64_t * __restrict, size_t);
template void divideImpl<uint64_t, int16_t, uint64_t>(const uint64_t * __restrict, int16_t, uint64_t * __restrict, size_t);
template void divideImpl<uint64_t, int8_t, uint64_t>(const uint64_t * __restrict, int8_t, uint64_t * __restrict, size_t);
template void divideImpl<uint32_t, int64_t, uint32_t>(const uint32_t * __restrict, int64_t, uint32_t * __restrict, size_t);
template void divideImpl<uint32_t, int32_t, uint32_t>(const uint32_t * __restrict, int32_t, uint32_t * __restrict, size_t);
template void divideImpl<uint32_t, int16_t, uint32_t>(const uint32_t * __restrict, int16_t, uint32_t * __restrict, size_t);
template void divideImpl<uint32_t, int8_t, uint32_t>(const uint32_t * __restrict, int8_t, uint32_t * __restrict, size_t);
template void divideImpl<int64_t, int64_t, int64_t>(const int64_t * __restrict, int64_t, int64_t * __restrict, size_t);
template void divideImpl<int64_t, int32_t, int64_t>(const int64_t * __restrict, int32_t, int64_t * __restrict, size_t);
template void divideImpl<int64_t, int16_t, int64_t>(const int64_t * __restrict, int16_t, int64_t * __restrict, size_t);
template void divideImpl<int64_t, int8_t, int64_t>(const int64_t * __restrict, int8_t, int64_t * __restrict, size_t);
template void divideImpl<int32_t, int64_t, int32_t>(const int32_t * __restrict, int64_t, int32_t * __restrict, size_t);
template void divideImpl<int32_t, int32_t, int32_t>(const int32_t * __restrict, int32_t, int32_t * __restrict, size_t);
template void divideImpl<int32_t, int16_t, int32_t>(const int32_t * __restrict, int16_t, int32_t * __restrict, size_t);
template void divideImpl<int32_t, int8_t, int32_t>(const int32_t * __restrict, int8_t, int32_t * __restrict, size_t);

4
src/Functions/divide/divide.h Normal file
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#include <cstddef>
template <typename A, typename B, typename ResultType>
void divideImpl(const A * __restrict a_pos, B b, ResultType * __restrict c_pos, size_t size);

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src/Functions/divide/divideImpl.cpp Normal file
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/// This translation unit should be compiled multiple times
/// with different values of NAMESPACE and machine flags (sse2, avx2).
#if !defined(NAMESPACE)
#error "NAMESPACE macro must be defined"
#endif
#if defined(__AVX2__)
#define REG_SIZE 32
#define LIBDIVIDE_AVX2
#elif defined(__SSE2__)
#define REG_SIZE 16
#define LIBDIVIDE_SSE2
#endif
#include <libdivide.h>
namespace NAMESPACE
{
template <typename A, typename B, typename ResultType>
void divideImpl(const A * __restrict a_pos, B b, ResultType * __restrict c_pos, size_t size)
{
libdivide::divider<A> divider(b);
const A * a_end = a_pos + size;
#if defined(__SSE2__)
static constexpr size_t values_per_simd_register = REG_SIZE / sizeof(A);
const A * a_end_simd = a_pos + size / values_per_simd_register * values_per_simd_register;
while (a_pos < a_end_simd)
{
#if defined(__AVX2__)
_mm256_storeu_si256(reinterpret_cast<__m256i *>(c_pos),
_mm256_loadu_si256(reinterpret_cast<const __m256i *>(a_pos)) / divider);
#else
_mm_storeu_si128(reinterpret_cast<__m128i *>(c_pos),
_mm_loadu_si128(reinterpret_cast<const __m128i *>(a_pos)) / divider);
#endif
a_pos += values_per_simd_register;
c_pos += values_per_simd_register;
}
#endif
while (a_pos < a_end)
{
*c_pos = *a_pos / divider;
++a_pos;
++c_pos;
}
}
template void divideImpl<uint64_t, uint64_t, uint64_t>(const uint64_t * __restrict, uint64_t, uint64_t * __restrict, size_t);
template void divideImpl<uint64_t, uint32_t, uint64_t>(const uint64_t * __restrict, uint32_t, uint64_t * __restrict, size_t);
template void divideImpl<uint64_t, uint16_t, uint64_t>(const uint64_t * __restrict, uint16_t, uint64_t * __restrict, size_t);
template void divideImpl<uint64_t, char8_t, uint64_t>(const uint64_t * __restrict, char8_t, uint64_t * __restrict, size_t);
template void divideImpl<uint32_t, uint64_t, uint32_t>(const uint32_t * __restrict, uint64_t, uint32_t * __restrict, size_t);
template void divideImpl<uint32_t, uint32_t, uint32_t>(const uint32_t * __restrict, uint32_t, uint32_t * __restrict, size_t);
template void divideImpl<uint32_t, uint16_t, uint32_t>(const uint32_t * __restrict, uint16_t, uint32_t * __restrict, size_t);
template void divideImpl<uint32_t, char8_t, uint32_t>(const uint32_t * __restrict, char8_t, uint32_t * __restrict, size_t);
template void divideImpl<int64_t, uint64_t, int64_t>(const int64_t * __restrict, uint64_t, int64_t * __restrict, size_t);
template void divideImpl<int64_t, uint32_t, int64_t>(const int64_t * __restrict, uint32_t, int64_t * __restrict, size_t);
template void divideImpl<int64_t, uint16_t, int64_t>(const int64_t * __restrict, uint16_t, int64_t * __restrict, size_t);
template void divideImpl<int64_t, char8_t, int64_t>(const int64_t * __restrict, char8_t, int64_t * __restrict, size_t);
template void divideImpl<int32_t, uint64_t, int32_t>(const int32_t * __restrict, uint64_t, int32_t * __restrict, size_t);
template void divideImpl<int32_t, uint32_t, int32_t>(const int32_t * __restrict, uint32_t, int32_t * __restrict, size_t);
template void divideImpl<int32_t, uint16_t, int32_t>(const int32_t * __restrict, uint16_t, int32_t * __restrict, size_t);
template void divideImpl<int32_t, char8_t, int32_t>(const int32_t * __restrict, char8_t, int32_t * __restrict, size_t);
template void divideImpl<uint64_t, int64_t, uint64_t>(const uint64_t * __restrict, int64_t, uint64_t * __restrict, size_t);
template void divideImpl<uint64_t, int32_t, uint64_t>(const uint64_t * __restrict, int32_t, uint64_t * __restrict, size_t);
template void divideImpl<uint64_t, int16_t, uint64_t>(const uint64_t * __restrict, int16_t, uint64_t * __restrict, size_t);
template void divideImpl<uint64_t, int8_t, uint64_t>(const uint64_t * __restrict, int8_t, uint64_t * __restrict, size_t);
template void divideImpl<uint32_t, int64_t, uint32_t>(const uint32_t * __restrict, int64_t, uint32_t * __restrict, size_t);
template void divideImpl<uint32_t, int32_t, uint32_t>(const uint32_t * __restrict, int32_t, uint32_t * __restrict, size_t);
template void divideImpl<uint32_t, int16_t, uint32_t>(const uint32_t * __restrict, int16_t, uint32_t * __restrict, size_t);
template void divideImpl<uint32_t, int8_t, uint32_t>(const uint32_t * __restrict, int8_t, uint32_t * __restrict, size_t);
template void divideImpl<int64_t, int64_t, int64_t>(const int64_t * __restrict, int64_t, int64_t * __restrict, size_t);
template void divideImpl<int64_t, int32_t, int64_t>(const int64_t * __restrict, int32_t, int64_t * __restrict, size_t);
template void divideImpl<int64_t, int16_t, int64_t>(const int64_t * __restrict, int16_t, int64_t * __restrict, size_t);
template void divideImpl<int64_t, int8_t, int64_t>(const int64_t * __restrict, int8_t, int64_t * __restrict, size_t);
template void divideImpl<int32_t, int64_t, int32_t>(const int32_t * __restrict, int64_t, int32_t * __restrict, size_t);
template void divideImpl<int32_t, int32_t, int32_t>(const int32_t * __restrict, int32_t, int32_t * __restrict, size_t);
template void divideImpl<int32_t, int16_t, int32_t>(const int32_t * __restrict, int16_t, int32_t * __restrict, size_t);
template void divideImpl<int32_t, int8_t, int32_t>(const int32_t * __restrict, int8_t, int32_t * __restrict, size_t);
}