[llvm] [HLSL] Adding support for root descriptors in root signature metadata representation (PR #139781)

[Justin Bogner via llvm-commits]

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@@ -55,6 +55,14 @@ static std::optional<uint32_t> extractMdIntValue(MDNode *Node,
   return std::nullopt;
 }
 
+static std::optional<StringRef> extractMdStringValue(MDNode *Node,
+                                                     unsigned int OpId) {
+  MDString *NodeText = cast<MDString>(Node->getOperand(OpId));
+  if (NodeText == nullptr)
+    return std::nullopt;
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bogner wrote:

Looks like you fixed the crash here, but could you please add a test as well?

https://github.com/llvm/llvm-project/pull/139781