Add or-patterns to pattern types

compiler/rustc_hir/src/hir.rs

@@ -1813,6 +1813,9 @@ pub enum TyPatKind<'hir> {
     /// A range pattern (e.g., `1..=2` or `1..2`).
     Range(&'hir ConstArg<'hir>, &'hir ConstArg<'hir>),
 
+    /// A list of patterns where only one needs to be satisfied
+    Or(&'hir [TyPat<'hir>]),
+
     /// A placeholder for a pattern that wasn't well formed in some way.
     Err(ErrorGuaranteed),
 }