[llvm] [ARM] Stop gluing ALU nodes to branches / selects (PR #116970)

[Martin Storsjö via llvm-commits]

mstorsjo wrote:

I've pinpointed it to one single object file (all the others can be compiled with this change without breakage), but I'll try to pinpoint the individual function(s) that contain the issue as well. Compiling with `-mllvm -verify-machineinstrs` doesn't point anything out, and neither does compiling with `-S` like it did last time around.

The issue does have some knock-on effects on other projects in my testing setup, so I'll revert it now and continue pinpointing it tomorrow, and I'll hand over the narrowed down case to you then.

https://github.com/llvm/llvm-project/pull/116970