Fix GCM of CSE stores

Stop CSE of stores.
Backports to ch11,12,13,14

2 files changed, 18 insertions, 1 deletions

diff --git a/chapter14/src/test/java/com/seaofnodes/simple/Chapter11Test.java b/chapter14/src/test/java/com/seaofnodes/simple/Chapter11Test.java
index 3b9cac7d..ca0db829 100644
--- a/chapter14/src/test/java/com/seaofnodes/simple/Chapter11Test.java
+++ b/chapter14/src/test/java/com/seaofnodes/simple/Chapter11Test.java
@@ -511,4 +511,21 @@ return v;
         StopNode stop = parser.parse(false).iterate(true);
         //assertEquals("return new S;", stop.toString());
     }
+
+    @Test
+    public void testSplit() {
+        Parser parser = new Parser(
+                                   """
+struct S { int f; }
+S s = new S;
+if( arg==0 ) s.f = 1;
+else if (arg == 1) s.f = 1;
+return s.f;
+""");
+        StopNode stop = parser.parse(false).iterate(true);
+        assertEquals("return Phi(Region37,1,Phi(Region35,1,0));", stop.toString());
+        assertEquals(1L, Evaluator.evaluate(stop,  0));
+        assertEquals(1L, Evaluator.evaluate(stop,  1));
+        assertEquals(0L, Evaluator.evaluate(stop,  2));
+    }
 }
diff --git a/chapter14/src/test/java/com/seaofnodes/simple/Chapter13Test.java b/chapter14/src/test/java/com/seaofnodes/simple/Chapter13Test.java
index f9aa3016..11ab5621 100644
--- a/chapter14/src/test/java/com/seaofnodes/simple/Chapter13Test.java
+++ b/chapter14/src/test/java/com/seaofnodes/simple/Chapter13Test.java
@@ -35,7 +35,7 @@ while( arg ) {
 return head.next.i;
 """);
         try { parser.parse(true).iterate(true); fail(); }
-        catch( Exception e ) { assertEquals("Might be null accessing 'i'",e.getMessage()); }
+        catch( Exception e ) { assertEquals("Might be null accessing 'next'",e.getMessage()); }
     }
 
     @Test