From b84d08d1e46df54ee3a2729296697e0b1ecc6097 Mon Sep 17 00:00:00 2001
From: Yuki Okushi <yuki.okushi@huawei.com>
Date: Wed, 16 Jun 2021 06:36:15 +0900
Subject: [PATCH] Use `has_impl_trait` where possible

---
 compiler/rustc_typeck/src/astconv/generics.rs | 12 +-----------
 1 file changed, 1 insertion(+), 11 deletions(-)

diff --git a/compiler/rustc_typeck/src/astconv/generics.rs b/compiler/rustc_typeck/src/astconv/generics.rs
index 9e700d9e8d8..0cfdde26c2b 100644
--- a/compiler/rustc_typeck/src/astconv/generics.rs
+++ b/compiler/rustc_typeck/src/astconv/generics.rs
@@ -647,17 +647,7 @@ impl<'o, 'tcx> dyn AstConv<'tcx> + 'o {
             return false;
         }
 
-        let impl_trait = generics.params.iter().any(|param| {
-            matches!(
-                param.kind,
-                ty::GenericParamDefKind::Type {
-                    synthetic: Some(
-                        hir::SyntheticTyParamKind::ImplTrait | hir::SyntheticTyParamKind::FromAttr,
-                    ),
-                    ..
-                }
-            )
-        });
+        let impl_trait = generics.has_impl_trait();
 
         if impl_trait {
             let spans = seg