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INCLUDE(CheckCSourceRuns)
INCLUDE(CheckCSourceCompiles)
INCLUDE(CheckCXXSourceRuns)
SET(AVX_CODE "
#include <immintrin.h>
int main()
{
__m256 a;
a = _mm256_set1_ps(0);
return 0;
}
")
SET(AVX512_CODE "
#include <immintrin.h>
int main()
{
__m512i a = _mm512_set_epi8(0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0);
__m512i b = a;
__mmask64 equality_mask = _mm512_cmp_epi8_mask(a, b, _MM_CMPINT_EQ);
return 0;
}
")
SET(AVX2_CODE "
#include <immintrin.h>
int main()
{
__m256i a = {0};
a = _mm256_abs_epi16(a);
__m256i x;
_mm256_extract_epi64(x, 0); // we rely on this in our AVX2 code
return 0;
}
")
MACRO(CHECK_SSE lang type flags)
SET(__FLAG_I 1)
SET(CMAKE_REQUIRED_FLAGS_SAVE ${CMAKE_REQUIRED_FLAGS})
FOREACH(__FLAG ${flags})
IF(NOT ${lang}_${type}_FOUND)
SET(CMAKE_REQUIRED_FLAGS ${__FLAG})
IF(lang STREQUAL "CXX")
CHECK_CXX_SOURCE_COMPILES("${${type}_CODE}" ${lang}_HAS_${type}_${__FLAG_I})
ELSE()
CHECK_C_SOURCE_COMPILES("${${type}_CODE}" ${lang}_HAS_${type}_${__FLAG_I})
ENDIF()
IF(${lang}_HAS_${type}_${__FLAG_I})
SET(${lang}_${type}_FOUND TRUE CACHE BOOL "${lang} ${type} support")
SET(${lang}_${type}_FLAGS "${__FLAG}" CACHE STRING "${lang} ${type} flags")
ENDIF()
MATH(EXPR __FLAG_I "${__FLAG_I}+1")
ENDIF()
ENDFOREACH()
SET(CMAKE_REQUIRED_FLAGS ${CMAKE_REQUIRED_FLAGS_SAVE})
IF(NOT ${lang}_${type}_FOUND)
SET(${lang}_${type}_FOUND FALSE CACHE BOOL "${lang} ${type} support")
SET(${lang}_${type}_FLAGS "" CACHE STRING "${lang} ${type} flags")
ENDIF()
MARK_AS_ADVANCED(${lang}_${type}_FOUND ${lang}_${type}_FLAGS)
ENDMACRO()
CHECK_SSE(C "AVX" " ;-mavx;/arch:AVX")
CHECK_SSE(C "AVX2" " ;-mavx2 -mfma -mf16c;/arch:AVX2")
CHECK_SSE(C "AVX512" " ;-mavx512f -mavx512dq -mavx512vl -mavx512bw -mfma;/arch:AVX512")
CHECK_SSE(CXX "AVX" " ;-mavx;/arch:AVX")
CHECK_SSE(CXX "AVX2" " ;-mavx2 -mfma -mf16c;/arch:AVX2")
CHECK_SSE(CXX "AVX512" " ;-mavx512f -mavx512dq -mavx512vl -mavx512bw -mfma;/arch:AVX512")
|
