src/linkage.rs

   1 use rustc_middle::mir::mono::{Linkage as RLinkage, MonoItem, Visibility};
   2
   3 use crate::prelude::*;
   4
   5 pub(crate) fn get_clif_linkage(mono_item: MonoItem<'_>, linkage: RLinkage, visibility: Visibility) -> Linkage {
   6     match (linkage, visibility) {
   7         (RLinkage::External, Visibility::Default) => Linkage::Export,
   8         (RLinkage::Internal, Visibility::Default) => Linkage::Local,
   9         (RLinkage::External, Visibility::Hidden) => Linkage::Hidden,
  10         _ => panic!("{:?} = {:?} {:?}", mono_item, linkage, visibility),
  11     }
  12 }
  13
  14 pub(crate) fn get_static_linkage(tcx: TyCtxt<'_>, def_id: DefId) -> Linkage {
  15     let fn_attrs = tcx.codegen_fn_attrs(def_id);
  16
  17     if let Some(linkage) = fn_attrs.linkage {
  18         match linkage {
  19             RLinkage::External => Linkage::Export,
  20             RLinkage::Internal => Linkage::Local,
  21             RLinkage::ExternalWeak | RLinkage::WeakAny => Linkage::Preemptible,
  22             _ => panic!("{:?}", linkage),
  23         }
  24     } else {
  25         if tcx.is_reachable_non_generic(def_id) {
  26             Linkage::Export
  27         } else {
  28             Linkage::Export // FIXME use Linkage::Hidden
  29         }
  30     }
  31 }