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105 lines
2.8 KiB
CMake
105 lines
2.8 KiB
CMake
#if (NOT CMAKE_SYSTEM_PROCESSOR MATCHES "x86_64|^i[3,9]86$")
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# return()
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#endif()
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include(CheckCSourceRuns)
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option(ENABLE_SSE "Enable compile-time SSE4.1 support." ON)
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option(ENABLE_AVX "Enable compile-time AVX support." ON)
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option(ENABLE_AVX2 "Enable compile-time AVX2 support." ON)
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if (ENABLE_SSE)
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#
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# Check compiler for SSE4_1 intrinsics
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#
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if (CMAKE_COMPILER_IS_GNUCC OR CMAKE_COMPILER_IS_CLANG )
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set(CMAKE_REQUIRED_FLAGS "-msse4.1")
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check_c_source_runs("
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#include <emmintrin.h>
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#include <smmintrin.h>
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int main()
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{
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__m128i a = _mm_setzero_si128();
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__m128i b = _mm_minpos_epu16(a);
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return 0;
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}"
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HAVE_SSE)
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endif()
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if (HAVE_SSE)
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message(STATUS "SSE4.1 is enabled - target CPU must support it")
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endif()
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if (ENABLE_AVX)
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#
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# Check compiler for AVX intrinsics
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#
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if (CMAKE_COMPILER_IS_GNUCC OR CMAKE_COMPILER_IS_CLANG )
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set(CMAKE_REQUIRED_FLAGS "-mavx")
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check_c_source_runs("
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#include <immintrin.h>
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int main()
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{
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__m256 a, b, c;
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const float src[8] = { 1.0f, 2.0f, 3.0f, 4.0f, 5.0f, 6.0f, 7.0f, 8.0f };
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float dst[8];
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a = _mm256_loadu_ps( src );
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b = _mm256_loadu_ps( src );
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c = _mm256_add_ps( a, b );
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_mm256_storeu_ps( dst, c );
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int i = 0;
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for( i = 0; i < 8; i++ ){
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if( ( src[i] + src[i] ) != dst[i] ){
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return -1;
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}
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}
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return 0;
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}"
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HAVE_AVX)
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endif()
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if (HAVE_AVX)
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message(STATUS "AVX is enabled - target CPU must support it")
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endif()
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endif()
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if (ENABLE_AVX2)
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#
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# Check compiler for AVX intrinsics
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#
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if (CMAKE_COMPILER_IS_GNUCC OR CMAKE_COMPILER_IS_CLANG )
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set(CMAKE_REQUIRED_FLAGS "-mavx2")
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check_c_source_runs("
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#include <immintrin.h>
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int main()
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{
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__m256i a, b, c;
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const int src[8] = { 1, 2, 3, 4, 5, 6, 7, 8 };
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int dst[8];
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a = _mm256_loadu_si256( (__m256i*)src );
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b = _mm256_loadu_si256( (__m256i*)src );
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c = _mm256_add_epi32( a, b );
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_mm256_storeu_si256( (__m256i*)dst, c );
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int i = 0;
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for( i = 0; i < 8; i++ ){
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if( ( src[i] + src[i] ) != dst[i] ){
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return -1;
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}
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}
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return 0;
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}"
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HAVE_AVX2)
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endif()
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if (HAVE_AVX2)
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message(STATUS "AVX2 is enabled - target CPU must support it")
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endif()
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endif()
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endif()
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mark_as_advanced(HAVE_SSE, HAVE_AVX, HAVE_AVX2)
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