Huh. Well, that leaves rebuilding with -march=skylake (I can vouch for that one being AVX512-free ^^), or trying under GDB, or an instrumented build for perf, or ASAN/MSAN & friends ^^.
EDIT: Except I'm guessing the AVX comes from the libc's memset/memcpy, so, nope on the rebuild ;p. (__memcpy_avx_unaligned_erms is certainly getting a good workout over here ;p).
Last edited by NiLuJe; 11-30-2020 at 07:42 PM.
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