internal: intern `TypeBound`s

Doesn't save much memory (~2 mb), but interning things is generally a
good pattern to follow

1 files changed, 3 insertions, 1 deletions

diff --git a/crates/hir_def/src/path/lower.rs b/crates/hir_def/src/path/lower.rs
index a873325b2..cf4e7c02e 100644
--- a/crates/hir_def/src/path/lower.rs
+++ b/crates/hir_def/src/path/lower.rs
@@ -171,7 +171,9 @@ pub(super) fn lower_generic_args(
                     let name = name_ref.as_name();
                     let type_ref = assoc_type_arg.ty().map(|it| TypeRef::from_ast(lower_ctx, it));
                     let bounds = if let Some(l) = assoc_type_arg.type_bound_list() {
-                        l.bounds().map(|it| TypeBound::from_ast(lower_ctx, it)).collect()
+                        l.bounds()
+                            .map(|it| Interned::new(TypeBound::from_ast(lower_ctx, it)))
+                            .collect()
                     } else {
                         Vec::new()
                     };