[clang] [llvm] Hlsl asint16 intrinsic (PR #131900)

[Ashley Coleman via llvm-commits]

V-FEXrt wrote:

I'm assuming this PR resolves an issue right? We typically add `Fixes #1234` (without the `) as part of the description so it will close the issue when the PR is merged 

https://github.com/llvm/llvm-project/pull/131900