[PATCH] D24154: [DAGCombiner] Fix incorrect sinking of a truncate into the operand of a shift.

[Matt Arsenault via llvm-commits]

arsenm added a comment.

LGTM, but can you add a scalar case with the original test I added for this which hits the new limit of the full scalar bit width behavior instead of / 2


https://reviews.llvm.org/D24154