[FIRRTL] handle testbench dir annotation in combination with dut anno…

…tation (#2382) Get files in the correct directory.
llvm · Dec 25, 2021 · bd80437 · bd80437
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commit bd80437
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diff --git a/include/circt/Dialect/FIRRTL/InstanceGraph.h b/include/circt/Dialect/FIRRTL/InstanceGraph.h
@@ -166,6 +166,9 @@ class InstanceGraph {
   /// InstanceOp.getReferencedModule() will be a linear search through the IR.
   Operation *getReferencedModule(InstanceOp op);
 
+  /// Check if child is instantiated by a parent.
+  bool isAncestor(FModuleLike child, FModuleOp parent);
+
   /// Iterate through all modules.
   using iterator = NodeIterator;
   iterator begin() { return nodes.begin(); }