Segfault from llvmjitcode test in Python 3.9

[oscarbenjamin]

This test from the optional dependency tests fails with a segfault under Python 3.9:

from sympy.printing.llvmjitcode import llvm_callable
from sympy import cse
from sympy.abc import a, b, n

e1 = a*a
e2 = a*a + b*b
e3 = cse([e1, e2])

f = llvm_callable([a, b], e3)
jit_res = f(0.1, 1.5)

That gives:

$ python test.py 
Segmentation fault: 11

The test needs llvmlite to be installed (pip install llvmlite).

Originally posted by @oscarbenjamin in #21885 (comment)

[oscarbenjamin]

CC @markdewing

[bjodah]

I think LLVM IR is a bit of a moving target, so I'm guessing llvmlite might have gotten a bump? Perhaps we need versioned printers (e.g. LLVM11JitPrinter, LLVM12JitPrinter, ...).

[oscarbenjamin]

Possibly fixed by #23513. See numba/llvmlite#838