lowering: move field -> expr.rs

src/librustc/hir/lowering.rs

@@ -4483,16 +4483,6 @@ fn arm(&mut self, pats: hir::HirVec<P<hir::Pat>>, expr: P<hir::Expr>) -> hir::Ar
         }
     }
 
-    fn field(&mut self, ident: Ident, expr: P<hir::Expr>, span: Span) -> hir::Field {
-        hir::Field {
-            hir_id: self.next_id(),
-            ident,
-            span,
-            expr,
-            is_shorthand: false,
-        }
-    }
-
     fn stmt(&mut self, span: Span, node: hir::StmtKind) -> hir::Stmt {
         hir::Stmt { span, node, hir_id: self.next_id() }
     }

src/librustc/hir/lowering/expr.rs

@@ -1350,4 +1350,14 @@ pub(super) fn expr(
             attrs,
         }
     }
+
+    fn field(&mut self, ident: Ident, expr: P<hir::Expr>, span: Span) -> hir::Field {
+        hir::Field {
+            hir_id: self.next_id(),
+            ident,
+            span,
+            expr,
+            is_shorthand: false,
+        }
+    }
 }