[llvm] [NewPM] Port x86-insert-vzero-upper (PR #181597)

[Aiden Grossman via llvm-commits]

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boomanaiden154 wrote:

We should just drop the name in the header entirely per https://llvm.org/docs/CodingStandards.html#file-headers.

https://github.com/llvm/llvm-project/pull/181597