This pr resolves some discrepancies in verification during `validate` in
`DXILRootSignature.cpp`.
Note: we don't add a backend test for version 1.0 flag values because it
treats the struct as though there is no flags value. However, this will
be used when we use the verifications in the frontend.
- Updates `verifyDescriptorFlag` to check for valid flags based on
version, as reflected [here](https://github.com/llvm/wg-hlsl/pull/297)
- Add test to demonstrate updated flag verifications
- Adds `verifyNumDescriptors` to the validation of `DescriptorRange`s
- Add a test to demonstrate `numDescriptors` verification
- Updates a number of tests that mistakenly had an invalid
`numDescriptors` specified
Resolves: https://github.com/llvm/llvm-project/issues/147107
Implements descriptor table parsing from root signature metadata. This
is required to support root signatures in hlsl.
Closes: #[126640](https://github.com/llvm/llvm-project/issues/126640)
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Co-authored-by: joaosaffran <joao.saffran@microsoft.com>
Updates the Root Signature metadata parser to extract version
information. This requirement was added after the initial parser
implementation.
---------
Co-authored-by: joaosaffran <joao.saffran@microsoft.com>
- adds parsing from metadata into dxcontainer binary
- adds validations as described in the spec
- adds testing scenarios
closes: [#126638](https://github.com/llvm/llvm-project/issues/126638)
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Co-authored-by: joaosaffran <joao.saffran@microsoft.com>
