[clang] [HLSL] Implement output parameter (PR #101083)

[Eli Friedman via cfe-commits]

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@@ -4057,6 +4057,10 @@ bool Sema::MergeFunctionDecl(FunctionDecl *New, NamedDecl *&OldD, Scope *S,
                                                          NewQType))
       return MergeCompatibleFunctionDecls(New, Old, S, MergeTypeWithOld);
 
+    if (getLangOpts().HLSL && Context.hasSameFunctionTypeIgnoringParamABI(
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efriedma-quic wrote:

Could you explain a bit more what you're doing here?  At first glance, functions with different out/inout markings aren't compatible.

https://github.com/llvm/llvm-project/pull/101083