[llvm] [X86][DAGCombiner][SelectionDAG] - Fold Zext Build Vector to Bitcast of widen Build Vector (PR #135010)

[Rohit Aggarwal via llvm-commits]

rohitaggarwal007 wrote:

Is it a good idea to move the logic in X86IselLowering.cpp so that just to enable for X86 incase other targets are regressing?

https://github.com/llvm/llvm-project/pull/135010