[clang] [Clang] Fix assertion "unsigned range includes negative?" in AnalyzeComparison during Sema of vector comparison with mismatched signed/unsigned types and __builtin_convertvector (PR #182627)

[Yutong Zhu via cfe-commits]

YutongZhuu wrote:

> CI failures appear to be unrelated, so I'll merge (sorry for the delay!)
> 
> Oops, I spoke too soon, can you update your email address to be public (https://llvm.org/docs/DeveloperPolicy.html#email-addresses)? When I went to land the changes, I see:
> 
> > [115899167+YutongZhuu at users.noreply.github.com](mailto:115899167+YutongZhuu at users.noreply.github.com).

Made it public, could you try again? Thanks!

https://github.com/llvm/llvm-project/pull/182627