preliminary work on sea of nodes based intermediate representation.

test.l

@@ -1,5 +1,12 @@
-u32 a()
-{
-	[u32] v = {1, 2, 3};
-	return z[0];
+u32 a = 2;
+
+if (a == 3) {
+	a = 5;
+	if (a == 4) {
+		a = 3;
+	}
+} else {
+	a = 1;
 }
+
+u32 d = a;