[llvm] [DXIL] Adding support to RootSignatureFlags generation to DXContainer (PR #122396)

[Chris B via llvm-commits]

https://github.com/llvm-beanz requested changes to this pull request.

There is _a lot_ about this PR that needs to change. I'll work through writing detailed feedback next week but some high level things:
1) Splitting up the change will make it a lot easier to review (I commented this separately too).
2) There are no tests of the yaml2obj support.
3) It doesn't look like you're handling endianness on the encoding.
4) The code structure is all off.

ObjectYAML cannot and should not depend on the IR analysis library. The code for encoding binary structures should be part of the MC library not the analysis library. Take a look at how the code for the PSV0 data is structured because this should be closer to that.

https://github.com/llvm/llvm-project/pull/122396