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Merge pull request #12749 from powderluv:fix-clang-cl-tzcnt

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Alexander Alekhin 2018-10-05 09:28:07 +00:00
commit aeec6e43eb
1 changed files with 3 additions and 0 deletions
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3
modules/core/include/opencv2/core/hal/intrin.hpp
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@ -368,6 +368,9 @@ inline unsigned int trailingZeros32(unsigned int value) {
unsigned long index = 0;
_BitScanForward(&index, value);
return (unsigned int)index;
#elif defined(__clang__)
// clang-cl doesn't export _tzcnt_u32 for non BMI systems
return value ? __builtin_ctz(value) : 32;
#else
return _tzcnt_u32(value);
#endif