Add tests

examples/ir1/cond.ir

@@ -0,0 +1,31 @@
+
+fun i32 @main () {
+init:
+  bid: b0
+  allocations: 
+    %l0:i32:y
+    %l1:i32:x
+    %l2:i32:t0
+
+block b0:
+  %b0:i0:unit = store 1:i32 %l0:*i32
+  %b0:i1:unit = store 0:i32 %l1:*i32
+  %b0:i2:i32 = load %l1:*i32
+  %b0:i3:i32 = load %l0:*i32
+  %b0:i4:u1 = cmp eq %b0:i2:i32 %b0:i3:i32
+  br %b0:i4:u1, b1(), b2()
+
+block b1:
+  %b1:i0:unit = store 2:i32 %l2:*i32
+  j b3()
+
+block b2:
+  %b2:i0:unit = store 5:i32 %l2:*i32
+  j b3()
+
+block b3:
+  %b3:i0:i32 = load %l2:*i32
+  %b3:i1:u1 = cmp eq %b3:i0:i32 5:i32
+  %b3:i2:i32 = typecast %b3:i1:u1 to i32
+  ret %b3:i2:i32
+}