[llvm] [X86] Ensure that bit reversals of byte vectors are properly lowered on pure GFNI targets (PR #148304)

[Simon Pilgrim via llvm-commits]

https://github.com/RKSimon commented:

You need to use the update_llc_test_checks.py script to regenerate the vector-bitreverse.ll file

https://github.com/llvm/llvm-project/pull/148304