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macro (PCL_CHECK_FOR_SSE)
include(CheckCXXSourceRuns)
set(CMAKE_REQUIRED_FLAGS "-march=native")
check_cxx_source_runs("
#include <immintrin.h>
int main()
{
volatile __m256i a, b;
a = _mm256_set1_epi8 (1);
b = _mm256_add_epi8 (a,a);
return 0;
}"
HAVE_AVX2_EXTENSIONS)
check_cxx_source_runs("
#include <immintrin.h>
int main()
{
__m256 a, b;
float vals[8] = {1, 2, 3, 4, 5, 6, 7, 8};
const int mask = 123;
a = _mm256_loadu_ps(vals);
b = a;
b = _mm256_dp_ps (a, a, 3);
_mm256_storeu_ps(vals,b);
return 0;
}"
HAVE_AVX_EXTENSIONS)
check_cxx_source_runs("
#include <nmmintrin.h>
int main ()
{
long long a[2] = { 1, 2 };
long long b[2] = { -1, 3 };
long long c[2];
__m128i va = _mm_loadu_si128 ((__m128i*)a);
__m128i vb = _mm_loadu_si128 ((__m128i*)b);
__m128i vc = _mm_cmpgt_epi64 (va, vb);
_mm_storeu_si128 ((__m128i*)c, vc);
return 0;
}"
HAVE_SSE4_2_EXTENSIONS)
check_cxx_source_runs("
#include <smmintrin.h>
int main ()
{
volatile __m128 a, b;
float vals[4] = {1, 2, 3, 4};
const int mask = 123;
a = _mm_loadu_ps (vals);
b = a;
b = _mm_dp_ps (a, a, 4);
_mm_storeu_ps (vals,b);
return (0);
}"
HAVE_SSE4_1_EXTENSIONS)
check_cxx_source_runs("
#include <pmmintrin.h>
int main ()
{
volatile __m128d a, b;
double vals[2] = {0};
a = _mm_loadu_pd (vals);
b = _mm_hadd_pd (a,a);
_mm_storeu_pd (vals, b);
return (0);
}"
HAVE_SSE3_EXTENSIONS)
check_cxx_source_runs("
#include <emmintrin.h>
int main ()
{
volatile __m128d a, b;
double vals[2] = {0};
a = _mm_loadu_pd (vals);
b = _mm_add_pd (a,a);
_mm_storeu_pd (vals,b);
return (0);
}"
HAVE_SSE2_EXTENSIONS)
check_cxx_source_runs("
#include <xmmintrin.h>
int main ()
{
volatile __m128 a, b;
float vals[4] = {0};
a = _mm_loadu_ps (vals);
b = a;
b = _mm_add_ps (a,b);
_mm_storeu_ps (vals,b);
return (0);
}"
HAVE_SSE_EXTENSIONS)
set(CMAKE_REQUIRED_FLAGS)
if(CMAKE_SYSTEM_PROCESSOR MATCHES "ppc64le")
set(CMAKE_REQUIRED_FLAGS "-DNO_WARN_X86_INTRINSICS"
endif()
set(SSE_FLAGS)
if(HAVE_AVX2_EXTENSIONS)
if(CMAKE_COMPILER_IS_CLANG)
SET(SSE_FLAGS "-mavx2")
else()
SET(SSE_FLAGS "-mavx2 -Wa,-q")
endif()
elseif(HAVE_AVX_EXTENSIONS)
if(CMAKE_COMPILER_IS_CLANG)
SET(SSE_FLAGS "-mavx")
else()
SET(SSE_FLAGS "-mavx -Wa,-q")
endif()
elseif(HAVE_SSE4_2_EXTENSIONS)
SET(SSE_FLAGS "-msse4.2")
elseif(HAVE_SSE4_1_EXTENSIONS)
SET(SSE_FLAGS "-msse4.1")
elseif(HAVE_SSE3_EXTENSIONS)
SET(SSE_FLAGS "-msse3")
elseif(HAVE_SSE2_EXTENSIONS)
SET(SSE_FLAGS "-msse2")
elseif(HAVE_SSE_EXTENSIONS)
SET(SSE_FLAGS "-msse")
endif()
endmacro ()
PCL_CHECK_FOR_SSE()
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