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43 lines
903 B
43 lines
903 B
5 years ago
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#include<simdconfig.h>
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#include<simdfuncs.h>
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#include<stdint.h>
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/*
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* FIXME add proper runtime detection for VS.
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*/
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#ifdef _MSC_VER
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#include<intrin.h>
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int avx2_available(void) {
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return 0;
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}
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#else
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#include<immintrin.h>
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#include<cpuid.h>
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#if defined(__APPLE__)
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int avx2_available(void) { return 0; }
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#else
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int avx2_available(void) {
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return __builtin_cpu_supports("avx2");
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}
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#endif
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#endif
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void increment_avx2(float arr[4]) {
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double darr[4];
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darr[0] = arr[0];
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darr[1] = arr[1];
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darr[2] = arr[2];
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darr[3] = arr[3];
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__m256d val = _mm256_loadu_pd(darr);
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__m256d one = _mm256_set1_pd(1.0);
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__m256d result = _mm256_add_pd(val, one);
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_mm256_storeu_pd(darr, result);
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one = _mm256_permute4x64_pd(one, 66); /* A no-op, just here to use AVX2. */
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arr[0] = (float)darr[0];
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arr[1] = (float)darr[1];
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arr[2] = (float)darr[2];
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arr[3] = (float)darr[3];
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}
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