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https://github.com/ClickHouse/ClickHouse.git
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75 lines
2.2 KiB
CMake
75 lines
2.2 KiB
CMake
# Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
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# SPDX-License-Identifier: Apache-2.0.
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include(CheckCCompilerFlag)
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include(CheckIncludeFile)
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if (USE_CPU_EXTENSIONS)
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if (MSVC)
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check_c_compiler_flag("/arch:AVX2" HAVE_M_AVX2_FLAG)
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if (HAVE_M_AVX2_FLAG)
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set(AVX2_CFLAGS "/arch:AVX2")
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endif()
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else()
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check_c_compiler_flag(-mavx2 HAVE_M_AVX2_FLAG)
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if (HAVE_M_AVX2_FLAG)
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set(AVX2_CFLAGS "-mavx -mavx2")
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endif()
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endif()
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cmake_push_check_state()
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set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} ${AVX2_CFLAGS}")
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check_c_source_compiles("
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#include <immintrin.h>
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#include <emmintrin.h>
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#include <string.h>
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int main() {
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__m256i vec;
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memset(&vec, 0, sizeof(vec));
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_mm256_shuffle_epi8(vec, vec);
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_mm256_set_epi32(1,2,3,4,5,6,7,8);
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_mm256_permutevar8x32_epi32(vec, vec);
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return 0;
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}" HAVE_AVX2_INTRINSICS)
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check_c_source_compiles("
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#include <immintrin.h>
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#include <string.h>
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int main() {
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__m256i vec;
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memset(&vec, 0, sizeof(vec));
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return (int)_mm256_extract_epi64(vec, 2);
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}" HAVE_MM256_EXTRACT_EPI64)
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cmake_pop_check_state()
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endif() # USE_CPU_EXTENSIONS
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macro(simd_add_definition_if target definition)
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if(${definition})
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target_compile_definitions(${target} PRIVATE -D${definition})
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endif(${definition})
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endmacro(simd_add_definition_if)
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# Configure private preprocessor definitions for SIMD-related features
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# Does not set any processor feature codegen flags
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function(simd_add_definitions target)
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simd_add_definition_if(${target} HAVE_AVX2_INTRINSICS)
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simd_add_definition_if(${target} HAVE_MM256_EXTRACT_EPI64)
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endfunction(simd_add_definitions)
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# Adds source files only if AVX2 is supported. These files will be built with
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# avx2 intrinsics enabled.
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# Usage: simd_add_source_avx2(target file1.c file2.c ...)
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function(simd_add_source_avx2 target)
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foreach(file ${ARGN})
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target_sources(${target} PRIVATE ${file})
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set_source_files_properties(${file} PROPERTIES COMPILE_FLAGS "${AVX2_CFLAGS}")
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endforeach()
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endfunction(simd_add_source_avx2)
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