bjoernager/rust
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Store the laziness of type aliases in the DefKind

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This commit is contained in:
León Orell Valerian Liehr 2023-08-06 23:02:27 +02:00
parent 34ccd04859
commit 5468336d6b
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GPG key ID: D17A07215F68E713
49 changed files with 208 additions and 93 deletions
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9
compiler/rustc_hir_analysis/src/variance/constraints.rs
View file

@ -78,9 +78,8 @@ pub fn add_constraints_from_crate<'a, 'tcx>(
}
}
DefKind::Fn | DefKind::AssocFn => constraint_cx.build_constraints_for_item(def_id),
DefKind::TyAlias
if tcx.features().lazy_type_alias
|| tcx.type_of(def_id).instantiate_identity().has_opaque_types() =>
DefKind::TyAlias { lazy }
if lazy || tcx.type_of(def_id).instantiate_identity().has_opaque_types() =>
{
constraint_cx.build_constraints_for_item(def_id)
}
@ -111,8 +110,8 @@ impl<'a, 'tcx> ConstraintContext<'a, 'tcx> {
// The type as returned by `type_of` is the underlying type and generally not a weak projection.
// Therefore we need to check the `DefKind` first.
if let DefKind::TyAlias = tcx.def_kind(def_id)
&& (tcx.features().lazy_type_alias || ty.has_opaque_types())
if let DefKind::TyAlias { lazy } = tcx.def_kind(def_id)
&& (lazy || ty.has_opaque_types())
{
self.add_constraints_from_ty(current_item, ty, self.covariant);
return;

5
compiler/rustc_hir_analysis/src/variance/mod.rs
View file

@ -56,9 +56,8 @@ 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::TyAlias
if tcx.features().lazy_type_alias
|| tcx.type_of(item_def_id).instantiate_identity().has_opaque_types() =>
DefKind::TyAlias { lazy }
if lazy || tcx.type_of(item_def_id).instantiate_identity().has_opaque_types() =>
{
// These are inferred.
let crate_map = tcx.crate_variances(());

5
compiler/rustc_hir_analysis/src/variance/terms.rs
View file

@ -97,9 +97,8 @@ pub fn determine_parameters_to_be_inferred<'a, 'tcx>(
}
}
DefKind::Fn | DefKind::AssocFn => terms_cx.add_inferreds_for_item(def_id),
DefKind::TyAlias
if tcx.features().lazy_type_alias
|| tcx.type_of(def_id).instantiate_identity().has_opaque_types() =>
DefKind::TyAlias { lazy }
if lazy || tcx.type_of(def_id).instantiate_identity().has_opaque_types() =>
{
terms_cx.add_inferreds_for_item(def_id)
}