================
@@ -49,6 +54,185 @@ LLVM_INSTANTIATE_REGISTRY(FrontendPluginRegistry)
namespace {
+/// DeserializedDeclsLineRangePrinter dumps ranges of deserialized declarations
+/// to aid debugging and bug minimization. It implements ASTConsumer and
+/// ASTDeserializationListener, so that an object of
+/// DeserializedDeclsLineRangePrinter registers as its own listener. The
+/// ASTDeserializationListener interface provides the DeclRead callback that we
+/// use to collect the deserialized Decls. Note that printing or otherwise
+/// processing them as this point is dangerous, since that could trigger
+/// additional deserialization and crash compilation. Therefore, we process the
+/// collected Decls in HandleTranslationUnit method of ASTConsumer. This is a
+/// safe point, since we know that by this point all the Decls needed by the
+/// compiler frontend have been deserialized. In case our processing causes
+/// further deserialization, DeclRead from the listener might be called again.
+/// However, at that point we don't accept any more Decls for processing.
+class DeserializedDeclsLineRangePrinter : public ASTConsumer,
----------------
emaxx-google wrote:
nit: Remove the word `Line` from the name, or replace it like
`...SourceRangePrinter`, since the code prints the column numbers as well too.
Or consider renaming the class to `MinimizationHintsPrinter` in accordance with
the flag name.
https://github.com/llvm/llvm-project/pull/133910
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