[llvm] [DXIL][Analysis] Collect Function properties in Metadata Analysis (PR #105728)

[Justin Bogner via llvm-commits]

https://github.com/bogner commented:

Sorry I didn't notice it when the pass itself went in, but we should really have some testing in `llvm/test/Analysis/DXILMetadataAnalysis`, not just piggy backing on the DirectX backend tests.

https://github.com/llvm/llvm-project/pull/105728