[clang] [llvm] [DirectX] Implement Shader Flags Analysis for ResMayNotAlias (PR #131070)

[Finn Plummer via llvm-commits]

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inbelic wrote:

Are we able to add the `-res-may-alias` flag here so that we keep our testcase isolated on the current flag being tested? Or add the module flag I suppose

https://github.com/llvm/llvm-project/pull/131070