[llvm] [LoopVectorize] Widen selected-base loads with masked loads (PR #213227)

[via llvm-commits]

OHNope wrote:

Sorry, I overlooked the impact on the VPlan before/after printing test. I’ve fixed it and rerun all tests under llvm/test/Transforms/LoopVectorize/VPlan; they all pass.

https://github.com/llvm/llvm-project/pull/213227