Update PCH serialization of FunctionDecl flags.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@82526 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/Frontend/ast-main.c b/test/Frontend/ast-main.c
index a08eb6b..7831406 100644
--- a/test/Frontend/ast-main.c
+++ b/test/Frontend/ast-main.c
@@ -1,8 +1,7 @@
-// RUN: clang -emit-llvm -S -o %t1.ll %s &&
+// RUN: clang -emit-llvm -S -o %t1.ll -x c - < %s &&
 // RUN: clang -emit-ast -o %t.ast %s &&
-// RUN: clang -emit-llvm -S -o %t2.ll %t.ast &&
+// RUN: clang -emit-llvm -S -o %t2.ll -x ast - < %t.ast &&
 // RUN: diff %t1.ll %t2.ll
-// XFAIL: *
 
 int main() {
   return 0;