[clang] [clang][CodeGen] Promote point of GRO(CWG2563) (PR #151067)

[Chuanqi Xu via cfe-commits]

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@@ -768,6 +781,76 @@ struct GetReturnObjectManager {
     CGF.EmitAutoVarInit(GroEmission);
     Builder.CreateStore(Builder.getTrue(), GroActiveFlag);
   }
+  // The GRO returns either when it is first suspended or when it completes
+  // without ever being suspended. The EmitGroConv function evaluates these
+  // conditions and executes the conversion if true.
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ChuanqiXu9 wrote:

nit: perform the conversion if needed

https://github.com/llvm/llvm-project/pull/151067