Add tests

examples/ir3/fib2.ir

@@ -0,0 +1,35 @@
+
+fun i32 @fibonacci (i32) {
+init:
+  bid: b0
+  allocations: 
+
+
+block b0:
+  %b0:i0:u1 = cmp lt %b0:p0:i32 2:i32
+  br %b0:i0:u1, b1(), b2()
+
+block b1:
+  ret %b0:p0:i32
+
+block b2:
+  %b2:i0:i32 = sub %b0:p0:i32 2:i32
+  %b2:i1:i32 = call @fibonacci:*[ret:i32 params:(i32)](%b2:i0:i32)
+  %b2:i2:i32 = sub %b0:p0:i32 1:i32
+  %b2:i3:i32 = call @fibonacci:*[ret:i32 params:(i32)](%b2:i2:i32)
+  %b2:i4:i32 = add %b2:i1:i32 %b2:i3:i32
+  ret %b2:i4:i32
+}
+
+fun i32 @main () {
+init:
+  bid: b0
+  allocations: 
+
+
+block b0:
+  %b0:i0:i32 = call @fibonacci:*[ret:i32 params:(i32)](9:i32)
+  %b0:i1:u1 = cmp eq %b0:i0:i32 34:i32
+  %b0:i2:i32 = typecast %b0:i1:u1 to i32
+  ret %b0:i2:i32
+}