Update documentation

compiler/rustc_middle/src/mir/interpret/allocation.rs

@@ -103,7 +103,7 @@ impl hash::Hash for Allocation {
 /// Interned types generally have an `Outer` type and an `Inner` type, where
 /// `Outer` is a newtype around `Interned<Inner>`, and all the operations are
 /// done on `Outer`, because all occurrences are interned. E.g. `Ty` is an
-/// outer type and `TyS` is its inner type.
+/// outer type and `TyKind` is its inner type.
 ///
 /// Here things are different because only const allocations are interned. This
 /// means that both the inner type (`Allocation`) and the outer type

compiler/rustc_middle/src/ty/mod.rs

@@ -448,7 +448,7 @@ pub struct CReaderCacheKey {
     pub pos: usize,
 }
 
-/// Use this rather than `TyS`, whenever possible.
+/// Use this rather than `TyKind`, whenever possible.
 #[derive(Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Hash, HashStable)]
 #[rustc_diagnostic_item = "Ty"]
 #[rustc_pass_by_value]
@@ -476,13 +476,13 @@ impl ty::EarlyBoundRegion {
 
 /// Represents a predicate.
 ///
-/// See comments on `TyS`, which apply here too (albeit for
-/// `PredicateS`/`Predicate` rather than `TyS`/`Ty`).
+/// See comments on `WithCachedTypeInfo`, which apply here too (albeit for
+/// `PredicateS`/`Predicate` rather than `TyKind`/`Ty`).
 #[derive(Debug)]
 pub(crate) struct PredicateS<'tcx> {
     kind: Binder<'tcx, PredicateKind<'tcx>>,
     flags: TypeFlags,
-    /// See the comment for the corresponding field of [TyS].
+    /// See the comment for the corresponding field of [WithCachedTypeInfo].
     outer_exclusive_binder: ty::DebruijnIndex,
 }