Segfaults on 32-bit Intel systems

[eschnett]

Something is broken with using BFloat16s on 32-bit Intel systems. See #84 . The error message is

Failed to precompile BFloat16s [ab4f0b2a-ad5b-11e8-123f-65d77653426b] to "/home/runner/.julia/compiled/v1.11/BFloat16s/jl_KKbK8Z".
[1831] signal 11 (2): Segmentation fault
in expression starting at none:0
unknown function (ip: 0xfffe8520)
Allocations: 872871 (Pool: 872839; Big: 32); GC: 
in expression starting at /home/runner/work/_actions/julia-actions/julia-runtest/v1/test_harness.jl:9

(This is with Julia 1.11.)

[ViralBShah]

Probably an error in Julia itself.