From 23481970c0115bf86f08c89b3916285b78311b8d Mon Sep 17 00:00:00 2001
From: fuhsnn <66062782+fuhsnn@users.noreply.github.com>
Date: Tue, 29 Sep 2026 17:37:41 +0800
Subject: Add same constant phi merge test

---
 .../test/java/com/seaofnodes/simple/Chapter05Test.java    | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

(limited to 'chapter25/src/test/java')

diff --git a/chapter25/src/test/java/com/seaofnodes/simple/Chapter05Test.java b/chapter25/src/test/java/com/seaofnodes/simple/Chapter05Test.java
index 6ac08fda..79af6ae7 100644
--- a/chapter25/src/test/java/com/seaofnodes/simple/Chapter05Test.java
+++ b/chapter25/src/test/java/com/seaofnodes/simple/Chapter05Test.java
@@ -137,6 +137,21 @@ return a;
         assertEquals("return (arg==Phi(Region,3,2));", code.print());
     }
 
+    @Test
+    public void testMergeSameCon() {
+        CodeGen code = new CodeGen(
+"""
+int a=arg;
+if( arg==1 )
+    a=3;
+else
+    a=3;
+return a;
+""");
+        code.parse().opto();
+        assertEquals("return 3;", code.print());
+    }
+
     @Test
     public void testTrue() {
       CodeGen code = new CodeGen("return true;").parse();
-- 
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