[llvm] [AMDGPU] Fix for 131386 by reducing implicit definitions on register restoration (PR #133986)

[Krzysztof Drewniak via llvm-commits]

https://github.com/krzysz00 commented:

This looks like a straightforward bugfix to me but I don't understand the backend well enough to approve it

https://github.com/llvm/llvm-project/pull/133986