[llvm-branch-commits] [llvm] [AMDGPU] Put back ProperlyAlignedRC helper functions (PR #175000)

[Matt Arsenault via llvm-branch-commits]

arsenm wrote:

> Can you elaborate on it? How, during RA, can the newly introduced regclasses be constrained for their uses? 

This shouldn't be necessary. The spill pseudos should support any register class, always. They can be split up as required to satisfy alignment when the pseudo is expanded 



https://github.com/llvm/llvm-project/pull/175000