[llvm-branch-commits] [clang] [HLSL] Add codegen for accessing resource members of a struct (PR #187127)

[Justin Bogner via llvm-branch-commits]

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@@ -96,24 +97,113 @@ void addRootSignatureMD(llvm::dxbc::RootSignatureVersion RootSigVer,
   RootSignatureValMD->addOperand(MDVals);
 }
 
+// Gived a MemberExpr of a resource or resource array type, find the parent
+// VarDecl of the struct or class instance that contains this resource and
+// build the full resource name based on the member access path.
+//
+// For example, for a member access like "myStructArray[0].memberA",
+// this function will find the VarDecl of "myStructArray" and use the
+// EmbeddedResourceNameBuilder to build the resource name
+// "myStructArray.0.memberA".
+static const VarDecl *getStructResourceParentDeclAndBuildName(
+    const MemberExpr *ME, EmbeddedResourceNameBuilder &NameBuilder) {
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bogner wrote:

I don't have a good suggestion for how to do otherwise here since separating these would be pretty awkward, but functions named `doXAndY` always make me a little uncomfortable.

https://github.com/llvm/llvm-project/pull/187127