[llvm-branch-commits] [llvm] [SelectionDAG] Fold EXTRACT_SUBVECTOR(EXTRACT_SUBVECTOR(X, C1), C0) with nonzero indices (PR #200935)

[Matt Arsenault via llvm-branch-commits]

https://github.com/arsenm commented:

You'd probably have better luck with 16-bit element vectors for AMDGPU (particularly cases that aren't even aligned). Or testing on another target 

https://github.com/llvm/llvm-project/pull/200935