Displaying 1 result from an estimated 1 matches for "_mm256_addsub_ps".
2016 May 31
2
[PATCH 1/2] Modify autoconf tests for intrinsics to stop clang from optimizing them away.
...RESUME_AVX],
[[#include <immintrin.h>
+ #include <time.h>
]],
[[
- static __m256 mtest;
- mtest = _mm256_setzero_ps();
+ __m256 mtest;
+ mtest = _mm256_set1_ps((float)time(NULL));
+ mtest = _mm256_addsub_ps(mtest, mtest);
+ return _mm_cvtss_si32(_mm256_extractf128_ps(mtest, 0));
]]
)
AS_IF([test x"$OPUS_X86_MAY_HAVE_AVX" = x"1" && test x"$OPUS_X86_PRESUME_AVX" != x"1"],
--
2.7.4 (Apple Git-66)