[llvm] [MachineLICM] Correctly Apply Register Masks (PR #95746)

[Martin Storsjö via llvm-commits]

mstorsjo wrote:

> Can you also provide the unoptimized IR? You can get it through clang by disabling all LLVM passes (`-Xclang -disable-llvm-passes` or something?)

Sure: 
[mchorver-16x8.zip](https://github.com/user-attachments/files/15885244/mchorver-16x8.zip)

With this, I can repro the same issue by compiling this IR as `clang mchorver-16x8.ll -O3 -c -o test/encoder/EncUT_MotionCompensation2.o`.

https://github.com/llvm/llvm-project/pull/95746