Actually create ranged int types in the type system.

compiler/rustc_hir/src/hir.rs

@@ -2624,7 +2624,7 @@ pub enum TyKind<'hir> {
     Infer,
     /// Placeholder for a type that has failed to be defined.
     Err(rustc_span::ErrorGuaranteed),
-    /// Pattern types (`u32 as 1..`)
+    /// Pattern types (`pattern_type!(u32 is 1..)`)
     Pat(&'hir Ty<'hir>, &'hir Pat<'hir>),
 }