bjoernager/rust
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Replace RPITIT current impl with new strategy that lowers as a GAT

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This commit is contained in:
Santiago Pastorino 2023-06-24 00:00:08 -03:00
parent d1389b9b48
commit 20429af7a3
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GPG key ID: 8131A24E0C79EFAF
146 changed files with 1106 additions and 586 deletions
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10
compiler/rustc_hir_analysis/src/variance/mod.rs
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@ -56,7 +56,7 @@ fn variances_of(tcx: TyCtxt<'_>, item_def_id: LocalDefId) -> &[ty::Variance] {
let crate_map = tcx.crate_variances(());
return crate_map.variances.get(&item_def_id.to_def_id()).copied().unwrap_or(&[]);
}
DefKind::OpaqueTy | DefKind::ImplTraitPlaceholder => {
DefKind::OpaqueTy => {
return variance_of_opaque(tcx, item_def_id);
}
_ => {}
@ -115,14 +115,6 @@ fn variance_of_opaque(tcx: TyCtxt<'_>, item_def_id: LocalDefId) -> &[ty::Varianc
{
self.visit_opaque(*def_id, substs)
}
// FIXME(-Zlower-impl-trait-in-trait-to-assoc-ty) check whether this is necessary
// at all for RPITITs.
ty::Alias(_, ty::AliasTy { def_id, substs, .. })
if self.tcx.is_impl_trait_in_trait(*def_id)
&& !self.tcx.lower_impl_trait_in_trait_to_assoc_ty() =>
{
self.visit_opaque(*def_id, substs)
}
_ => t.super_visit_with(self),
}
}