jit crash, 2024-09-20_67c5

[hzeller]

Repro:

bazel test  -c opt //xls/fuzzer:run_crasher_test_2024-09-20_67c5

This causes a segfault invoking eval_ir_main --use_llvm_jit but without much log.
If test is run with --config=asan it shows that there is a failing read dereference:

$path_to/xls/tools/eval_ir_main --input_file=/tmp/temp_directory_di0FGT/args.txt --use_llvm_jit /tmp/temp_directory_di0FGT/sample.ir
==23==ERROR: AddressSanitizer: SEGV on unknown address (pc 0x7f6dec7d44bf bp 0x000000000006 sp 0x7fff2ed6fc98 T0)
==23==The signal is caused by a READ memory access.
==23==Hint: this fault was caused by a dereference of a high value address (see register values below).  Disassemble the provided pc to learn which register was used.
    #0 0x7f6dec7d44bf  (<unknown module>)

AddressSanitizer can not provide additional info.
SUMMARY: AddressSanitizer: SEGV (<unknown module>) 

Possibly some LLVM issue.