Function compute_entry_weight 

pub fn compute_entry_weight(
    session: &AnalysisSession,
    entry_points: &[EntryPoint],
) -> EngineResult<EntryWeightListing>

Compute the startup import weight of every runtime entry point.

entry_points gives the declaring source of each entry, as the listing reports it. Entries are sorted by eager_bytes (heaviest first), then by path.

Errors

Returns an error if parsing or graph construction fails.