digraph Memory {
  // IR styles match graph/web/render.js; arrows are use -> definition.
  graph [bgcolor="#fafbfc" fontname="Helvetica" nodesep=0.35 ranksep=0.55 splines=ortho];
  node [fontname="Helvetica" fontsize=12 color="#758191" fontcolor="#152330" shape=box style="rounded,filled" fillcolor="#edf3f7"];
  edge [fontname="Helvetica" fontsize=9 color="#536477" fontcolor="#364352" arrowsize=0.7 penwidth=1.5];

  rankdir=RL;

  M [label="Incoming memory" shape=octagon style="filled" fillcolor="#dcecff"];
  A [label="True: Store x" shape=octagon style="filled" fillcolor="#dcecff"];
  B [label="False: Store x" shape=octagon style="filled" fillcolor="#dcecff"];
  P [label="Phi(memory)" shape=hexagon style="filled" fillcolor="#f5e4fa"];
  P -> A -> M [color="#2867b2"]; P -> B -> M [color="#2867b2"];
  P -> Region [style=dashed,color="#9396a3"]; Return -> P [color="#2867b2"];
  Return [shape=box style="filled" fillcolor="#fff1c4"];
  Region [shape=trapezium style="filled" fillcolor="#fff1c4"];
}