[llvm] [DAG] Combine `store + vselect` to `masked_store` (PR #145176)

[Abhishek Kaushik via llvm-commits]

abhishek-kaushik22 wrote:

> It is difficult to share a preprocessed .cc file. Highway is widely used, I'm curious what is the issue with building?

The issue is I don't have an arm machine, and I don't have the privileges to setup arm toolchains on office servers :(

https://github.com/llvm/llvm-project/pull/145176