[llvm] [AMDGPU] siloadstoreopt generate REG_SEQUENCE with aligned operands (PR #162088)

[Matt Arsenault via llvm-commits]

https://github.com/arsenm commented:

Can you add the new test that produced the unaligned use? I'm not really sure how you ended up with this problem in the first place 

https://github.com/llvm/llvm-project/pull/162088