julia

90dbc5da - Don't rely on implicit information for statement used-ness. (#46966)

Don't rely on implicit information for statement used-ness. (#46966) Currently, we were relying on the implicitly passed in sv.currpc to determine whether a call result type was needed or not. This is usually correct, but not always. For example, in apply_iterate, we actually end up calling various `iterate` methods and inspect their result, so the used-ness of the outer apply_iterate is irrelevant. Similar examples occur in external packages. Fix this issue by refactoring the code to thread through an extra `StmtInfo` object that record used-ness (and potentially other stmt attributes in the future).