[all-commits] [llvm/llvm-project] 9cdd33: [HLSL][RootSignature] Metadata generation of RootF...

[Finn Plummer via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 9cdd33db169d0ba9853f2c9538cb15ec4b506793
      https://github.com/llvm/llvm-project/commit/9cdd33db169d0ba9853f2c9538cb15ec4b506793
  Author: Finn Plummer <finn.c.plum at gmail.com>
  Date:   2025-05-30 (Fri, 30 May 2025)

  Changed paths:
    M clang/test/CodeGenHLSL/RootSignature.hlsl
    M llvm/include/llvm/Frontend/HLSL/HLSLRootSignature.h
    M llvm/lib/Frontend/HLSL/HLSLRootSignature.cpp

  Log Message:
  -----------
  [HLSL][RootSignature] Metadata generation of RootFlags, RootConstants, RootDescriptors (#142010)

Implements metadata generation of a Root Signature from its in-memory
representation. It follows the same style as:
https://github.com/llvm/llvm-project/pull/139633.

This pr handles RootFlags, RootConstants and RootDescriptors.

The metadata follows the format described
[here](https://github.com/llvm/wg-hlsl/blob/main/proposals/0002-root-signature-in-clang.md#metadata-schema).

- Implement `BuildRoot[Flags|Constants|Descriptors]` into
`HLSLRootSignature.h`
- Add sample testcases demonstrating functionality

Note: there is no validation of metadata nodes as the
`llvm::hlsl::rootsig::RootElement` that generates it will have already
been validated.

First part of https://github.com/llvm/llvm-project/issues/126586.



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