Add a test to the previous commit.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@105596 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/CodeGen/builtins-arm.c b/test/CodeGen/builtins-arm.c
index 5553757..546f57a 100644
--- a/test/CodeGen/builtins-arm.c
+++ b/test/CodeGen/builtins-arm.c
@@ -1,6 +1,12 @@
-// RUN: %clang_cc1 -triple thumbv7-eabi -target-cpu cortex-a8 -O3 -emit-llvm -o %t %s
+// RUN: %clang_cc1 -Wall -Werror -triple thumbv7-eabi -target-cpu cortex-a8 -O3 -emit-llvm -o - %s | FileCheck %s
 
 void *f0()
 {
   return __builtin_thread_pointer();
 }
+
+void f1(char *a, char *b) {
+	__clear_cache(a,b);
+}
+
+// CHECK: call void @__clear_cache