[llvm-branch-commits] [llvm] [AMDGPU][SIFoldOperands] Fold some redundant bitmasks (PR #131311)

[Matt Arsenault via llvm-branch-commits]

arsenm wrote:

This is still theoretically useful in the dag path, but probably isn't the preferred way to deal with the issue 

https://github.com/llvm/llvm-project/pull/131311