From 2f0d6dd2c8727b4abc6bd704b2c9df2825996073 Mon Sep 17 00:00:00 2001
From: Cliff Click <cliffc@acm.org>
Date: Tue, 31 Oct 2023 19:51:30 -0700
Subject: Bugfix Region

Region edges need to align with Phi edges; missing leading null
---
 chapter05/src/main/java/com/seaofnodes/simple/node/ScopeNode.java | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'chapter05/src')

diff --git a/chapter05/src/main/java/com/seaofnodes/simple/node/ScopeNode.java b/chapter05/src/main/java/com/seaofnodes/simple/node/ScopeNode.java
index b854c627..505ffcae 100644
--- a/chapter05/src/main/java/com/seaofnodes/simple/node/ScopeNode.java
+++ b/chapter05/src/main/java/com/seaofnodes/simple/node/ScopeNode.java
@@ -115,7 +115,7 @@ public class ScopeNode extends Node {
     }
 
     public RegionNode mergeScopes(ScopeNode that) {
-        RegionNode r = (RegionNode)ctrl(new RegionNode(ctrl(), that.ctrl()).peephole());
+        RegionNode r = (RegionNode)ctrl(new RegionNode(null,ctrl(), that.ctrl()).peephole());
         for( int i=1; i<nIns(); i++ )
             if( in(1) != that.in(i) ) // No need for redundant Phis
                 set_def(i,new PhiNode(_rlabels.get(i), r, in(i), that.in(i)).peephole());
-- 
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