Details
-
Bug
-
Status: Closed (View Workflow)
-
Critical
-
Resolution: Fixed
-
11.7.0
-
None
Description
In file included from /home/buildbot/x86-debian-12/build/sql/vector_mhnsw.cc:25:
|
/home/buildbot/x86-debian-12/build/sql/bloom_filters.h: In member function ‘void PatternedSimdBloomFilter<T>::Insert(const T**)’:
|
/home/buildbot/x86-debian-12/build/sql/bloom_filters.h:128:23: error: there are no arguments to ‘_mm256_extract_epi64’ that depend on a template parameter, so a declaration of ‘_mm256_extract_epi64’ must be available [-fpermissive]
|
128 | uint64_t block0 = _mm256_extract_epi64(vecBlockIdxA, 0);
|
Attachments
Issue Links
- is caused by
-
MDEV-34939 vector search in 11.7
-
- Closed
-
Activity
some intrisics are defined as
|
avxintrin.h |
#ifdef __x86_64__
|
extern __inline long long __attribute__((__gnu_inline__, __always_inline__, __artificial__)) |
_mm256_extract_epi64 (__m256i __X, const int __N) |
{
|
__m128i __Y = _mm256_extractf128_si256 (__X, __N >> 1);
|
return _mm_extract_epi64 (__Y, __N % 2); |
}
|
#endif |
As far as I can tell, the Intel intrinsic function wraps an AVX instruction, which definitely is available in some IA-32 implementations.
One thing that I do not see in the code is a run-time feature check. Not only the CPU implementation needs to support the ISA extensions that are being used, but also the operating system needs to enable saving the registers on a context switch; otherwise SIGILL will be triggered, as we recently learned in
MDEV-34565. An easy way to test this would be to boot Linux with the option noxsave.