meson/test cases/common/155 simd/simd_sse3.c

#include<simdconfig.h>
#include<simdfuncs.h>

#ifdef _MSC_VER
#include<intrin.h>
int sse3_available() {
    return 1;
}
#else

#include<pmmintrin.h>
#include<cpuid.h>
#include<stdint.h>

#if defined(__APPLE__)
int sse3_available() { return 1; }
#else
int sse3_available() {
    return __builtin_cpu_supports("sse3");
}
#endif
#endif

void increment_sse3(float arr[4]) {
    double darr[4];
    __m128d val1 = _mm_set_pd(arr[0], arr[1]);
    __m128d val2 = _mm_set_pd(arr[2], arr[3]);
    __m128d one = _mm_set_pd(1.0, 1.0);
    __m128d result = _mm_add_pd(val1, one);
    _mm_store_pd(darr, result);
    result = _mm_add_pd(val2, one);
    _mm_store_pd(&darr[2], result);
    result = _mm_hadd_pd(val1, val2); /* This does nothing. Only here so we use an SSE3 instruction. */
    arr[0] = (float)darr[1];
    arr[1] = (float)darr[0];
    arr[2] = (float)darr[3];
    arr[3] = (float)darr[2];
}