[llvm] [InstSimplify] Fold active.lane.mask to poison (PR #203333)

[Ramkumar Ramachandra via llvm-commits]

artagnon wrote:

> We have several tests in llvm/test/Transforms/InstCombine/get_active_lane_mask.ll and llvm/test/Transforms/InstSimplify/ConstProp/active-lane-mask.ll. I don't see what we're missing. Can you point out the new coverage?

Ah yes, I've switched the patch over to fold to poison.

https://github.com/llvm/llvm-project/pull/203333