Use pattern to match attributes

Author: gnzlbg

src/test/codegen/ffi-const.rs

@@ -2,15 +2,10 @@
 #![crate_type = "lib"]
 #![feature(ffi_const)]
 
-// CHECK-LABEL: @bar()
-#[no_mangle]
 pub fn bar() { unsafe { foo() } }
 
-
 extern {
-    // CHECK-LABEL: @foo() unnamed_addr #1
-    // CHECK: attributes #1 = { {{.*}}readnone{{.*}} }
-    #[no_mangle]
-    #[ffi_const]
-    pub fn foo();
+    #[ffi_const] pub fn foo();
 }
+// CHECK: declare void @foo(){{.*}}#1{{.*}}
+// CHECK: attributes #1 = { {{.*}}readnone{{.*}} }

src/test/codegen/ffi-pure.rs

@@ -2,12 +2,10 @@
 #![crate_type = "lib"]
 #![feature(ffi_pure)]
 
-// CHECK-LABEL: @bar()
-#[no_mangle]
 pub fn bar() { unsafe { foo() } }
 
 extern {
-    // CHECK-LABEL: @foo() unnamed_addr #1
-    // CHECK: attributes #1 = { {{.*}}readonly{{.*}} }
     #[ffi_pure] pub fn foo();
 }
+// CHECK: declare void @foo(){{.*}}#1{{.*}}
+// CHECK: attributes #1 = { {{.*}}readonly{{.*}} }