[llvm-branch-commits] [DXIL][Analysis] Implement enough of DXILResourceAnalysis for buffers (PR #100699)

[Justin Bogner via llvm-branch-commits]

https://github.com/bogner created https://github.com/llvm/llvm-project/pull/100699

This implements the DXILResourceAnalysis pass for `dx.TypedBuffer` and
`dx.RawBuffer` types. This should be sufficient to lower
`dx.handle.fromBinding` for this set of types, but it leaves a number
of TODOs around for other resource types.

This also includes a straightforward `print` method in `ResourceInfo`
to make the analysis testable. This is deliberately different than the
printer in `lib/Target/DirectX/DXILResource.cpp`, which attempts to
print bindings in a format compatible with the comments `dxc` prints.
We will eventually want to make that functionality driven by this
analysis pass, but it isn't sufficient for testing so we need both.