__builtin_clz    1168 Zend/zend_alloc.c #if (defined(__GNUC__) || __has_builtin(__builtin_clz))  && defined(PHP_HAVE_BUILTIN_CLZ)
__builtin_clz    1169 Zend/zend_alloc.c 	return (__builtin_clz(size) ^ 0x1f) + 1;
__builtin_clz     117 Zend/zend_hash.c #elif (defined(__GNUC__) || __has_builtin(__builtin_clz))  && defined(PHP_HAVE_BUILTIN_CLZ)
__builtin_clz     118 Zend/zend_hash.c 	return 0x2 << (__builtin_clz(nSize - 1) ^ 0x1f);