[llvm] [AArch64][FEAT_CMPBR] Codegen for Armv9.6-a compare-and-branch (PR #116465)

[David Green via llvm-commits]

https://github.com/davemgreen commented:

Thanks - looks sensible to me, just a question about removing one of the two ISD nodes.

https://github.com/llvm/llvm-project/pull/116465