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gallivm: check for avx512vbmi and tell LLVM the correct answer.
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There are some CPUs out there which don't have vbmi and do have
other avx512 and mesa crashes on those with illegal instructions.

This was reported to Red Hat support.

Cc: mesa-stable
Acked-By: Mike Blumenkrantz <michael.blumenkrantz@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/34282>
This commit is contained in:
Dave Airlie 2025-03-31 11:43:17 +10:00 • committed by Marge Bot
parent 4ac900b5bf
commit 5d6d167a7c
1 changed files with 1 additions and 0 deletions
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src/gallium/auxiliary/gallivm/lp_bld_misc.cpp
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@ -383,6 +383,7 @@ lp_build_fill_mattrs(std::vector<std::string> &MAttrs)
MAttrs.push_back(util_get_cpu_caps()->has_avx512bw ? "+avx512bw" : "-avx512bw");
MAttrs.push_back(util_get_cpu_caps()->has_avx512dq ? "+avx512dq" : "-avx512dq");
MAttrs.push_back(util_get_cpu_caps()->has_avx512vl ? "+avx512vl" : "-avx512vl");
MAttrs.push_back(util_get_cpu_caps()->has_avx512vbmi ? "+avx512vbmi" : "-avx512vbmi");
#endif
#if DETECT_ARCH_ARM
if (!util_get_cpu_caps()->has_neon) {