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Remove projection_ty_from_predicates

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Yuki Okushi 2021-06-16 16:33:03 +09:00
parent 52b22869db
commit 280d19395d
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GPG key ID: DABA5B072961C18A
3 changed files with 1 additions and 29 deletions
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2
compiler/rustc_middle/src/dep_graph/dep_node.rs
View file

@ -285,7 +285,7 @@ pub type DepNode = rustc_query_system::dep_graph::DepNode<DepKind>;
// required that their size stay the same, but we don't want to change
// it inadvertently. This assert just ensures we're aware of any change.
#[cfg(any(target_arch = "x86", target_arch = "x86_64"))]
static_assert_size!(DepNode, 18);
static_assert_size!(DepNode, 17);
#[cfg(not(any(target_arch = "x86", target_arch = "x86_64")))]
static_assert_size!(DepNode, 24);

4
compiler/rustc_middle/src/query/mod.rs
View file

@ -191,10 +191,6 @@ rustc_queries! {
desc { |tcx| "elaborating item bounds for `{}`", tcx.def_path_str(key) }
}
query projection_ty_from_predicates(key: (DefId, DefId)) -> Option<ty::ProjectionTy<'tcx>> {
desc { |tcx| "finding projection type inside predicates of `{}`", tcx.def_path_str(key.0) }
}
query native_libraries(_: CrateNum) -> Lrc<Vec<NativeLib>> {
desc { "looking up the native libraries of a linked crate" }
}

24
compiler/rustc_typeck/src/collect.rs
View file

@ -77,7 +77,6 @@ pub fn provide(providers: &mut Providers) {
generics_of,
predicates_of,
predicates_defined_on,
projection_ty_from_predicates,
explicit_predicates_of,
super_predicates_of,
super_predicates_that_define_assoc_type,
@ -2352,29 +2351,6 @@ fn explicit_predicates_of(tcx: TyCtxt<'_>, def_id: DefId) -> ty::GenericPredicat
}
}
fn projection_ty_from_predicates(
tcx: TyCtxt<'tcx>,
key: (
// ty_def_id
DefId,
// def_id of `N` in `<T as Trait>::N`
DefId,
),
) -> Option<ty::ProjectionTy<'tcx>> {
let (ty_def_id, item_def_id) = key;
let mut projection_ty = None;
for (predicate, _) in tcx.predicates_of(ty_def_id).predicates {
if let ty::PredicateKind::Projection(projection_predicate) = predicate.kind().skip_binder()
{
if item_def_id == projection_predicate.projection_ty.item_def_id {
projection_ty = Some(projection_predicate.projection_ty);
break;
}
}
}
projection_ty
}
/// Converts a specific `GenericBound` from the AST into a set of
/// predicates that apply to the self type. A vector is returned
/// because this can be anywhere from zero predicates (`T: ?Sized` adds no