Add tests

examples/ir0/simple_cond.ir

@@ -0,0 +1,69 @@
+
+fun i32 @f (i32) {
+init:
+  bid: b0
+  allocations: 
+    %l0:i32:x
+
+block b0:
+  %b0:i0:unit = store %b0:p0:i32 %l0:*i32
+  %b0:i1:i32 = load %l0:*i32
+  %b0:i2:i32 = add %b0:i1:i32 8:i32
+  ret %b0:i2:i32
+
+block b1:
+  ret undef:i32
+}
+
+fun i32 @main () {
+init:
+  bid: b0
+  allocations: 
+    %l0:i32:x
+    %l1:i32:y
+    %l2:i32:t0
+    %l3:i32:t1
+
+block b0:
+  %b0:i0:unit = store 0:i32 %l0:*i32
+  %b0:i1:i32 = load %l0:*i32
+  %b0:i2:i32 = add %b0:i1:i32 1:i32
+  %b0:i3:unit = store %b0:i2:i32 %l0:*i32
+  %b0:i4:u1 = cmp eq %b0:i1:i32 1:i32
+  br %b0:i4:u1, b1(), b2()
+
+block b1:
+  %b1:i0:unit = store 1:i32 %l2:*i32
+  j b3()
+
+block b2:
+  %b2:i0:unit = store 2:i32 %l2:*i32
+  j b3()
+
+block b3:
+  %b3:i0:i32 = load %l2:*i32
+  %b3:i1:unit = store %b3:i0:i32 %l1:*i32
+  %b3:i2:i32 = load %l0:*i32
+  %b3:i3:i32 = load %l1:*i32
+  %b3:i4:u1 = cmp lt %b3:i2:i32 %b3:i3:i32
+  br %b3:i4:u1, b4(), b5()
+
+block b4:
+  %b4:i0:i32 = load %l0:*i32
+  %b4:i1:unit = store %b4:i0:i32 %l3:*i32
+  j b6()
+
+block b5:
+  %b5:i0:unit = store 2:i32 %l3:*i32
+  j b6()
+
+block b6:
+  %b6:i0:i32 = load %l3:*i32
+  %b6:i1:i32 = call @f:*[ret:i32 params:(i32)](%b6:i0:i32)
+  %b6:i2:u1 = cmp eq %b6:i1:i32 9:i32
+  %b6:i3:i32 = typecast %b6:i2:u1 to i32
+  ret %b6:i3:i32
+
+block b7:
+  ret 0:i32
+}