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This update introduces the ability to filter merged functions during lookups based on regex patterns derived from call site information in a previous call to `llvm-gsymutil`. The regex patterns, extracted from call sites, can then be passed to subsequent calls using the `--merged-functions-filter` option along with `--merged-functions` and `--address` (or `--addresses-from-stdin`). This allows for precise filtering of functions during lookups, giving accurate results for call stacks that contain merged functions.