// IR forming a call graph with a diamond of triangle-shaped SCCs:
//
-// d1 |
-// / \ |
-// d3--d2 |
-// / \ |
-// b1 c1 |
-// / \ / \ |
-// b3--b2 c3--c2 |
-// \ / |
-// a1 |
-// / \ |
-// a3--a2 |
+// d1
+// / \
+// d3--d2
+// / \
+// b1 c1
+// / \ / \
+// b3--b2 c3--c2
+// \ /
+// a1
+// / \
+// a3--a2
//
// All call edges go up between SCCs, and clockwise around the SCC.
static const char DiamondOfTriangles[] =