From 81b654d76444d747fdf1d053760e507b50f26e18 Mon Sep 17 00:00:00 2001
From: Cliff Click <cliffc@acm.org>
Date: Mon, 5 Oct 2026 15:38:06 -0700
Subject: Small peep to drop simple store-updates out of loops

---
 chapter18/src/test/java/com/seaofnodes/simple/Chapter11Test.java | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

(limited to 'chapter18/src/test/java')

diff --git a/chapter18/src/test/java/com/seaofnodes/simple/Chapter11Test.java b/chapter18/src/test/java/com/seaofnodes/simple/Chapter11Test.java
index 01e37a43..9fd392d2 100644
--- a/chapter18/src/test/java/com/seaofnodes/simple/Chapter11Test.java
+++ b/chapter18/src/test/java/com/seaofnodes/simple/Chapter11Test.java
@@ -35,7 +35,8 @@ public class Chapter11Test {
         var stop = code._stop;
         int[] phis = {0};
         stop.walk(n -> {
-            if (n instanceof MemPhiNode) phis[0]++;
+            // Store sinking can replace field memory Phis with value Phis.
+            if (n instanceof PhiNode) phis[0]++;
             if (n instanceof MemMergeNode m && m.in(1) instanceof BulkMemPhiNode b)
                 for(int a=b._aliases.nextSetBit(0); a>=0; a=b._aliases.nextSetBit(a+1))
                     assertTrue(a<m.nIns() && m.in(a)!=null);
@@ -43,7 +44,7 @@ public class Chapter11Test {
                 !(n instanceof MemPhiNode) && !(n instanceof BulkMemPhiNode) && !(n instanceof ParmNode));
             return null;
         });
-        assertTrue(phis[0]>=3);
+        assertTrue(phis[0]>=4); // Three fields and the loop counter.
         assertEquals("S{x=1,y=2,z=3}",Eval2.eval(code,4));
     }
 
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