Function rustc_const_eval::util::find_self_call

pub fn find_self_call<'tcx>(
    tcx: TyCtxt<'tcx>,
    body: &Body<'tcx>,
    local: Local,
    block: BasicBlock
) -> Option<(DefId, SubstsRef<'tcx>)>

Checks if the specified local is used as the self parameter of a method call in the provided BasicBlock. If it is, then the DefId of the called method is returned.