diff --git a/clang/test/CodeGen/regparm.c b/clang/test/CodeGen/regparm.c
new file mode 100644
index 000000000000..fdf07ead6de7
--- /dev/null
+++ b/clang/test/CodeGen/regparm.c
@@ -0,0 +1,19 @@
+// RUN: clang-cc -triple i386-unknown-unknown %s -emit-llvm -o - | grep inreg | count 2
+
+#define FASTCALL __attribute__((regparm(2)))
+
+typedef struct {
+  int aaa;
+  double bbbb;
+  int ccc[200];
+} foo;
+
+static void FASTCALL
+reduced(char b, double c, foo* d, double e, int f)
+{
+}
+
+int
+main(void) {
+	reduced(0, 0.0, 0, 0.0, 0);
+}