[llvm-branch-commits] [llvm] release/19.x: [RegisterCoalescer] Fix SUBREG_TO_REG handling in the RegisterCoalescer. (#96839) (PR #101071)

[Tobias Hieta via llvm-branch-commits]

tru wrote:

I had to manually merge this since there was a merge commit in this PR. It was fine but please don't merge in from the release branch in the future since we don't use squashing for the release branch.

https://github.com/llvm/llvm-project/pull/101071