Add an indirection for closures in `hir::ExprKind`

This helps bring `hir::Expr` size down, `Closure` was the biggest
variant, especially after `for<>` additions.

2 files changed, 11 insertions, 2 deletions

diff --git a/compiler/rustc_passes/src/loops.rs b/compiler/rustc_passes/src/loops.rs
index 68b2a052391..cdda0e388dd 100644
--- a/compiler/rustc_passes/src/loops.rs
+++ b/compiler/rustc_passes/src/loops.rs
@@ -57,7 +57,13 @@ impl<'a, 'hir> Visitor<'hir> for CheckLoopVisitor<'a, 'hir> {
             hir::ExprKind::Loop(ref b, _, source, _) => {
                 self.with_context(Loop(source), |v| v.visit_block(&b));
             }
-            hir::ExprKind::Closure { ref fn_decl, body, fn_decl_span, movability, .. } => {
+            hir::ExprKind::Closure(&hir::Closure {
+                ref fn_decl,
+                body,
+                fn_decl_span,
+                movability,
+                ..
+            }) => {
                 let cx = if let Some(Movability::Static) = movability {
                     AsyncClosure(fn_decl_span)
                 } else {
diff --git a/compiler/rustc_passes/src/reachable.rs b/compiler/rustc_passes/src/reachable.rs
index c830ab11e8e..f7e3fac6b2e 100644
--- a/compiler/rustc_passes/src/reachable.rs
+++ b/compiler/rustc_passes/src/reachable.rs
@@ -273,7 +273,10 @@ impl<'tcx> ReachableContext<'tcx> {
                 }
                 hir::ImplItemKind::TyAlias(_) => {}
             },
-            Node::Expr(&hir::Expr { kind: hir::ExprKind::Closure { body, .. }, .. }) => {
+            Node::Expr(&hir::Expr {
+                kind: hir::ExprKind::Closure(&hir::Closure { body, .. }),
+                ..
+            }) => {
                 self.visit_nested_body(body);
             }
             // Nothing to recurse on for these