37 lines
1.3 KiB
Rust
37 lines
1.3 KiB
Rust
use rustc_middle::mir::mono::{Linkage as RLinkage, MonoItem, Visibility};
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use crate::prelude::*;
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pub(crate) fn get_clif_linkage(
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mono_item: MonoItem<'_>,
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linkage: RLinkage,
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visibility: Visibility,
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is_compiler_builtins: bool,
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) -> Linkage {
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match (linkage, visibility) {
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(RLinkage::External, Visibility::Default) if is_compiler_builtins => Linkage::Hidden,
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(RLinkage::External, Visibility::Default) => Linkage::Export,
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(RLinkage::Internal, Visibility::Default) => Linkage::Local,
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(RLinkage::External, Visibility::Hidden) => Linkage::Hidden,
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(RLinkage::WeakAny, Visibility::Default) => Linkage::Preemptible,
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_ => panic!("{:?} = {:?} {:?}", mono_item, linkage, visibility),
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}
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}
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pub(crate) fn get_static_linkage(tcx: TyCtxt<'_>, def_id: DefId) -> Linkage {
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let fn_attrs = tcx.codegen_fn_attrs(def_id);
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if let Some(linkage) = fn_attrs.linkage {
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match linkage {
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RLinkage::External => Linkage::Export,
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RLinkage::Internal => Linkage::Local,
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RLinkage::ExternalWeak | RLinkage::WeakAny => Linkage::Preemptible,
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_ => panic!("{:?}", linkage),
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}
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} else if tcx.is_reachable_non_generic(def_id) {
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Linkage::Export
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} else {
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Linkage::Hidden
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}
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}
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