Add benchmark

bench/exotic_arguments.c

@@ -0,0 +1,31 @@
+typedef struct {
+  int a;
+  int b;
+} small;
+
+typedef struct {
+  long a;
+  long b;
+  long c;
+  long d;
+  long e;
+  long f;
+  long g;
+  long h;
+} large;
+
+int exotic_arguments_struct_small(small a, int nonce) {
+  return a.a + a.b + nonce;
+}
+
+long exotic_arguments_struct_large(large a, int nonce) {
+  return a.a + a.b + a.c + a.d + a.e + a.f + a.g + a.h + nonce;
+}
+
+float exotic_arguments_float(float a, int nonce) {
+  return a + (float) nonce;
+}
+
+double exotic_arguments_double(double a, int nonce) {
+  return a + (double) nonce;
+}