[llvm-branch-commits] [llvm] AMDGPU: Delete spills of undef values (PR #119684)

[Christudasan Devadasan via llvm-branch-commits]

cdevadas wrote:

Currently, regalloc won't do subreg spilling. But it will be fixed in the foreseeable future. What will happen if you write a test that spills the `undef` subreg of a tuple?
Do you want to cover it anyway?

https://github.com/llvm/llvm-project/pull/119684