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Rollup merge of #128170 - saethlin:clone-fn, r=compiler-errors

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Make Clone::clone a lang item

I want to absorb all the logic for picking whether an Instance is LocalCopy or GloballyShared into one place. As part of this, I wanted to identify Clone shims inside `cross_crate_inlinable` and found that rather tricky. `@compiler-errors` suggested that I add a lang item for `Clone::clone` because that would produce other cleanups in the compiler.

That sounds good to me, but I have looked and I've only been able to find one.

r? compiler-errors
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Trevor Gross 2024-07-26 02:20:31 -04:00 • committed by GitHub
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4 changed files with 7 additions and 2 deletions
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compiler/rustc_hir/src/lang_items.rs
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@ -162,6 +162,7 @@ language_item_table! {
StructuralPeq, sym::structural_peq, structural_peq_trait, Target::Trait, GenericRequirement::None;
Copy, sym::copy, copy_trait, Target::Trait, GenericRequirement::Exact(0);
Clone, sym::clone, clone_trait, Target::Trait, GenericRequirement::None;
CloneFn, sym::clone_fn, clone_fn, Target::Method(MethodKind::Trait { body: false }), GenericRequirement::None;
Sync, sym::sync, sync_trait, Target::Trait, GenericRequirement::Exact(0);
DiscriminantKind, sym::discriminant_kind, discriminant_kind_trait, Target::Trait, GenericRequirement::None;
/// The associated item of the `DiscriminantKind` trait.