[llvm] [LV][EVL] Support cast instruction with EVL-vectorization (PR #108351)

[Mel Chen via llvm-commits]

https://github.com/Mel-Chen commented:

Apologies for the late reply since I just finished a long vacation. 
I'm happy to see that someone else is also contributing to EVL vectorization. :)

https://github.com/llvm/llvm-project/pull/108351