From 3ba6686fc991998a0a420709dfb0012bbddf77ab Mon Sep 17 00:00:00 2001
From: Cliff Click <cliffc@acm.org>
Date: Tue, 29 Sep 2026 12:21:46 -0700
Subject: Backport lazy memory splits to ch10, split into ch10a and b

---
 chapter10a/docs/example2b.gv | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

(limited to 'chapter10a/docs/example2b.gv')

diff --git a/chapter10a/docs/example2b.gv b/chapter10a/docs/example2b.gv
index 7ccbcc99..3f3309e5 100644
--- a/chapter10a/docs/example2b.gv
+++ b/chapter10a/docs/example2b.gv
@@ -1,8 +1,11 @@
 digraph Memory {
-  rankdir=LR;
+  rankdir=RL;
   node [shape=box];
   P [label="Phi(memory)"];
   S [label="Loop-body Store"];
-  P -> Entry [color=blue]; P -> S -> P [color=blue];
+  P -> Entry [color=blue];
+  P -> S [color=blue,constraint=false]; // Backedge must not place Store before Phi.
+  S -> P [color=blue];
   P -> Loop [style=dashed]; Return -> P [color=blue];
+  Return -> S [style=invis]; // Layout only: Phi, Store, Return from left to right.
 }
-- 
cgit v1.2.3