Turn off all printing during test runs

was making 10000 lines of ignored output

10 files changed, 107 insertions, 126 deletions

diff --git a/chapter10/src/test/java/com/seaofnodes/simple/Chapter02Test.java b/chapter10/src/test/java/com/seaofnodes/simple/Chapter02Test.java
index 2deba460..75ee0b70 100644
--- a/chapter10/src/test/java/com/seaofnodes/simple/Chapter02Test.java
+++ b/chapter10/src/test/java/com/seaofnodes/simple/Chapter02Test.java
@@ -14,8 +14,6 @@ public class Chapter02Test {
         Node._disablePeephole = true; // disable peephole so we can observe full graph
         StopNode ret = parser.parse();
         assertEquals("return ((1+(2*3))+(-5));", ret.print());
-        GraphVisualizer gv = new GraphVisualizer();
-        System.out.println(gv.generateDotOutput(parser));
         Node._disablePeephole = false;
     }
 
@@ -59,8 +57,6 @@ public class Chapter02Test {
         Parser parser = new Parser("return 1+2*3+-5;");
         StopNode ret = parser.parse();
         assertEquals("return 2;", ret.print());
-        GraphVisualizer gv = new GraphVisualizer();
-        System.out.println(gv.generateDotOutput(parser));
     }
 
 }
diff --git a/chapter10/src/test/java/com/seaofnodes/simple/Chapter03Test.java b/chapter10/src/test/java/com/seaofnodes/simple/Chapter03Test.java
index 407fbe48..c76df903 100644
--- a/chapter10/src/test/java/com/seaofnodes/simple/Chapter03Test.java
+++ b/chapter10/src/test/java/com/seaofnodes/simple/Chapter03Test.java
@@ -31,7 +31,7 @@ public class Chapter03Test {
 
     @Test
     public void testVarScopeNoPeephole() {
-        Parser parser = new Parser("int a=1; int b=2; int c=0; { int b=3; c=a+b; #showGraph; } return c; #showGraph;");
+        Parser parser = new Parser("int a=1; int b=2; int c=0; { int b=3; c=a+b;  } return c; ");
         Node._disablePeephole = true;
         StopNode ret = parser.parse();
         Node._disablePeephole = false;
@@ -40,7 +40,7 @@ public class Chapter03Test {
 
     @Test
     public void testVarDist() {
-        Parser parser = new Parser("int x0=1; int y0=2; int x1=3; int y1=4; return (x0-x1)*(x0-x1) + (y0-y1)*(y0-y1); #showGraph;");
+        Parser parser = new Parser("int x0=1; int y0=2; int x1=3; int y1=4; return (x0-x1)*(x0-x1) + (y0-y1)*(y0-y1); ");
         StopNode ret = parser.parse();
         assertEquals("return 8;", ret.print());
     }
diff --git a/chapter10/src/test/java/com/seaofnodes/simple/Chapter04Test.java b/chapter10/src/test/java/com/seaofnodes/simple/Chapter04Test.java
index cde23324..e23a10b1 100644
--- a/chapter10/src/test/java/com/seaofnodes/simple/Chapter04Test.java
+++ b/chapter10/src/test/java/com/seaofnodes/simple/Chapter04Test.java
@@ -10,7 +10,7 @@ public class Chapter04Test {
 
     @Test
     public void testPeephole() {
-        Parser parser = new Parser("return 1+arg+2; #showGraph;");
+        Parser parser = new Parser("return 1+arg+2; ");
         StopNode ret = parser.parse();
         assertEquals("return (arg+3);", ret.print());
     }
@@ -38,7 +38,7 @@ public class Chapter04Test {
 
     @Test
     public void testPeephole3() {
-        Parser parser = new Parser("return 1+arg+2+arg+3; #showGraph;");
+        Parser parser = new Parser("return 1+arg+2+arg+3; ");
         StopNode ret = parser.parse();
         assertEquals("return ((arg*2)+6);", ret.print());
     }
@@ -52,7 +52,7 @@ public class Chapter04Test {
 
     @Test
     public void testVarArg() {
-        Parser parser = new Parser("return arg; #showGraph;");
+        Parser parser = new Parser("return arg; ");
         StopNode stop = parser.parse();
         ReturnNode ret = stop.ret();
         assertTrue(ret.in(0) instanceof ProjNode);
@@ -61,49 +61,49 @@ public class Chapter04Test {
 
     @Test
     public void testConstantArg() {
-        Parser parser = new Parser("return arg; #showGraph;", TypeInteger.constant(2));
+        Parser parser = new Parser("return arg; ", TypeInteger.constant(2));
         StopNode ret = parser.parse();
         assertEquals("return 2;", ret.print());
     }
 
     @Test
     public void testCompEq() {
-        Parser parser = new Parser("return 3==3; #showGraph;");
+        Parser parser = new Parser("return 3==3; ");
         StopNode ret = parser.parse();
         assertEquals("return 1;", ret.print());
     }
 
     @Test
     public void testCompEq2() {
-        Parser parser = new Parser("return 3==4; #showGraph;");
+        Parser parser = new Parser("return 3==4; ");
         StopNode ret = parser.parse();
         assertEquals("return 0;", ret.print());
     }
 
     @Test
     public void testCompNEq() {
-        Parser parser = new Parser("return 3!=3; #showGraph;");
+        Parser parser = new Parser("return 3!=3; ");
         StopNode ret = parser.parse();
         assertEquals("return 0;", ret.print());
     }
 
     @Test
     public void testCompNEq2() {
-        Parser parser = new Parser("return 3!=4; #showGraph;");
+        Parser parser = new Parser("return 3!=4; ");
         StopNode ret = parser.parse();
         assertEquals("return 1;", ret.print());
     }
 
     @Test
     public void testBug1() {
-        Parser parser = new Parser("int a=arg+1; int b=a; b=1; return a+2; #showGraph;");
+        Parser parser = new Parser("int a=arg+1; int b=a; b=1; return a+2; ");
         StopNode ret = parser.parse();
         assertEquals("return (arg+3);", ret.print());
     }
 
     @Test
     public void testBug2() {
-        Parser parser = new Parser("int a=arg+1; a=a; return a; #showGraph;");
+        Parser parser = new Parser("int a=arg+1; a=a; return a; ");
         StopNode ret = parser.parse();
         assertEquals("return (arg+1);", ret.print());
     }
diff --git a/chapter10/src/test/java/com/seaofnodes/simple/Chapter05Test.java b/chapter10/src/test/java/com/seaofnodes/simple/Chapter05Test.java
index 44fff0c0..35e54fa9 100644
--- a/chapter10/src/test/java/com/seaofnodes/simple/Chapter05Test.java
+++ b/chapter10/src/test/java/com/seaofnodes/simple/Chapter05Test.java
@@ -17,11 +17,11 @@ if (arg == 1)
     a = arg+2;
 else {
     a = arg-3;
-    #showGraph;
+
 }
-#showGraph;
+
 return a;""");
-        StopNode ret = parser.parse().iterate(true);
+        StopNode ret = parser.parse().iterate();
         assertEquals("return Phi(Region18,(arg+2),(arg-3));", ret.toString());
     }
 
@@ -36,7 +36,7 @@ if (arg == 1) {
     c = 4;
 }
 return c;""", TypeInteger.BOT);
-        StopNode ret = parser.parse().iterate(true);
+        StopNode ret = parser.parse().iterate();
         assertEquals("return Phi(Region16,4,3);", ret.toString());
     }
 
@@ -48,7 +48,7 @@ if( arg==1 )
     return 3;
 else
     return 4;
-#showGraph;""", TypeInteger.BOT);
+""", TypeInteger.BOT);
         StopNode stop = parser.parse();
         assertEquals("Stop[ return 3; return 4; ]", stop.toString());
     }
@@ -64,7 +64,7 @@ if( arg==1 )
 else
     b=a+1;
 return a+b;""");
-        StopNode ret = parser.parse().iterate(true);
+        StopNode ret = parser.parse().iterate();
         assertEquals("return ((arg*2)+Phi(Region21,2,3));", ret.toString());
     }
 
@@ -79,7 +79,7 @@ if( arg==1 )
 else
     a=b+1;
 return a+b;""");
-        StopNode ret = parser.parse().iterate(true);
+        StopNode ret = parser.parse().iterate();
         assertEquals("return ((Phi(Region32,(arg*2),arg)+arg)+Phi(Region,4,5));", ret.toString());
     }
 
@@ -98,7 +98,7 @@ else if( arg==3 )
 else
     a=5;
 return a;
-#showGraph;""", TypeInteger.BOT);
+""", TypeInteger.BOT);
         StopNode stop = parser.parse().iterate();
         assertEquals("return Phi(Region36,Phi(Region22,2,3),Phi(Region34,4,5));", stop.toString());
     }
@@ -114,7 +114,7 @@ if( arg )
 if( arg==0 )
     b=2;
 return arg+a+b;
-#showGraph;""", TypeInteger.BOT);
+""", TypeInteger.BOT);
         StopNode stop = parser.parse();
         assertEquals("return ((arg+Phi(Region13,1,0))+Phi(Region28,2,0));", stop.toString());
     }
diff --git a/chapter10/src/test/java/com/seaofnodes/simple/Chapter06Test.java b/chapter10/src/test/java/com/seaofnodes/simple/Chapter06Test.java
index d30bd43d..097c2617 100644
--- a/chapter10/src/test/java/com/seaofnodes/simple/Chapter06Test.java
+++ b/chapter10/src/test/java/com/seaofnodes/simple/Chapter06Test.java
@@ -15,7 +15,7 @@ public class Chapter06Test {
 if( true ) return 2;
 return 1;
 """);
-        StopNode stop = parser.parse().iterate(true);
+        StopNode stop = parser.parse().iterate();
         assertEquals("return 2;", stop.toString());
         assertTrue(stop.ret().ctrl() instanceof ProjNode);
     }
@@ -44,7 +44,7 @@ else
   a=3;
 return a;
 """);
-        StopNode stop = parser.parse().iterate(true);
+        StopNode stop = parser.parse().iterate();
         assertEquals("return 2;", stop.toString());
         assertTrue(stop.ret().ctrl() instanceof ProjNode);
     }
@@ -64,7 +64,7 @@ if( a==2 )
 else
     b=5;
 return b;""", TypeInteger.BOT);
-        StopNode stop = parser.parse().iterate(true);
+        StopNode stop = parser.parse().iterate();
         assertEquals("return Phi(Region37,42,5);", stop.toString());
     }
 
@@ -83,7 +83,7 @@ if( arg==2 )
 else
     b=5;
 return b;""", TypeInteger.BOT);
-        StopNode stop = parser.parse().iterate(true);
+        StopNode stop = parser.parse().iterate();
         assertEquals("return Phi(Region30,2,5);", stop.toString());
     }
 
@@ -102,7 +102,7 @@ else if( arg==3 )
 else
     a=5;
 return a;
-#showGraph;""", TypeInteger.constant(2));
+""", TypeInteger.constant(2));
         StopNode stop = parser.parse();
         assertEquals("return 5;", stop.toString());
     }
@@ -123,7 +123,7 @@ else
     a=5;
 return a;
 """, TypeInteger.constant(1));
-        StopNode stop = parser.parse().iterate(true);
+        StopNode stop = parser.parse().iterate();
         assertEquals("return 3;", stop.toString());
     }
 
@@ -143,7 +143,7 @@ else
     a=5;
 return a;
 """, TypeInteger.BOT);
-        StopNode stop = parser.parse().iterate(true);
+        StopNode stop = parser.parse().iterate();
         assertEquals("return Phi(Region41,3,Phi(Region39,4,5));", stop.toString());
     }
 
@@ -163,7 +163,7 @@ else
     a=5;
 return a;
 """, TypeInteger.constant(1));
-        StopNode stop = parser.parse().iterate(true);
+        StopNode stop = parser.parse().iterate();
         assertEquals("return 3;", stop.toString());
     }
 
@@ -183,7 +183,7 @@ else
     a=5;
 return a;
 """, TypeInteger.constant(3));
-        StopNode stop = parser.parse().iterate(true);
+        StopNode stop = parser.parse().iterate();
         assertEquals("return 4;", stop.toString());
     }
 
@@ -199,7 +199,7 @@ if( arg ) {
 }
 return a+b;
 """);
-        StopNode ret = parser.parse().iterate(true);
+        StopNode ret = parser.parse().iterate();
         assertEquals("return Phi(Region24,4,1);", ret.toString());
     }
 
@@ -216,7 +216,7 @@ if( arg ) {
 }
 return a+b;
 """, TypeInteger.constant(1));
-        StopNode ret = parser.parse().iterate(true);
+        StopNode ret = parser.parse().iterate();
         assertEquals("return 4;", ret.toString());
     }
 
@@ -232,7 +232,7 @@ if( arg ) {
 }
 return a+b;
 """, TypeInteger.constant(0));
-        StopNode ret = parser.parse().iterate(true);
+        StopNode ret = parser.parse().iterate();
         assertEquals("return 1;", ret.toString());
     }
 
@@ -250,7 +250,7 @@ if( arg ) {
 }
 return a+b+c;
 """);
-        StopNode ret = parser.parse().iterate(true);
+        StopNode ret = parser.parse().iterate();
         assertEquals("return (Phi(Region36,Phi(Region23,2,3),0)+Phi(Region,3,1));", ret.toString());
     }
 
@@ -269,7 +269,7 @@ if( arg ) {
 }
 return a+b+c;
 """, TypeInteger.constant(1));
-        StopNode ret = parser.parse().iterate(true);
+        StopNode ret = parser.parse().iterate();
         assertEquals("return 6;", ret.toString());
     }
 
@@ -287,7 +287,7 @@ if( arg ) {
 }
 return a+b+c;
 """, TypeInteger.constant(2));
-        StopNode ret = parser.parse().iterate(true);
+        StopNode ret = parser.parse().iterate();
         assertEquals("return 5;", ret.toString());
     }
 
diff --git a/chapter10/src/test/java/com/seaofnodes/simple/Chapter07Test.java b/chapter10/src/test/java/com/seaofnodes/simple/Chapter07Test.java
index a5cddb68..de9d16f2 100644
--- a/chapter10/src/test/java/com/seaofnodes/simple/Chapter07Test.java
+++ b/chapter10/src/test/java/com/seaofnodes/simple/Chapter07Test.java
@@ -14,12 +14,11 @@ public class Chapter07Test {
                 """
                 while(arg < 10) {
                     arg = arg + 1;
-                    #showGraph;
                 }
                 return arg;
                 """);
         Node._disablePeephole = true;
-        StopNode stop = parser.parse(true);
+        StopNode stop = parser.parse();
         assertEquals("return Phi(Loop6,arg,(Phi_arg+1));", stop.toString());
         assertTrue(stop.ret().ctrl() instanceof ProjNode);
         Node._disablePeephole = false;
@@ -37,7 +36,7 @@ if(arg){}else{
 }
 return a;
 """);
-        StopNode stop = parser.parse().iterate(true);
+        StopNode stop = parser.parse().iterate();
         assertEquals("return Phi(Region24,1,Phi(Loop13,1,(Phi_a+1)));", stop.toString());
     }
 
@@ -57,9 +56,8 @@ while(i < arg) {
 }
 return sum;
 """);
-        StopNode stop = parser.parse().iterate(true);
+        StopNode stop = parser.parse().iterate();
         assertEquals("return Phi(Loop8,0,Phi(Loop20,Phi_sum,(Phi_sum+Phi(Loop,0,(Phi_j+1)))));", stop.toString());
-        System.out.println(IRPrinter.prettyPrint(stop,99));
     }
 
     @Test
@@ -75,11 +73,10 @@ while(a < 10) {
 return b;
 """);
         Node._disablePeephole = true;
-        StopNode stop = parser.parse(true);
+        StopNode stop = parser.parse();
         assertEquals("return Phi(Loop8,2,Phi(Region27,Phi_b,4));", stop.toString());
         assertTrue(stop.ret().ctrl() instanceof ProjNode);
         Node._disablePeephole = false;
-        System.out.println(IRPrinter.prettyPrint(stop,99));
     }
 
     @Test
@@ -96,10 +93,9 @@ while(a < 10) {
 }
 return b;
 """);
-        StopNode stop = parser.parse().iterate(true);
+        StopNode stop = parser.parse().iterate();
         assertEquals("return Phi(Loop8,2,(Phi(Region27,Phi_b,4)+1));", stop.toString());
         assertTrue(stop.ret().ctrl() instanceof ProjNode);
-        System.out.println(IRPrinter.prettyPrint(stop,99));
     }
 
 
@@ -115,7 +111,7 @@ while(a < 10) {
 return a;
 """);
         Node._disablePeephole = true;
-        StopNode stop = parser.parse(true);
+        StopNode stop = parser.parse();
         assertEquals("return Phi(Loop7,1,((Phi_a+1)+2));", stop.toString());
         assertTrue(stop.ret().ctrl() instanceof ProjNode);
         Node._disablePeephole = false;
@@ -132,7 +128,7 @@ while(a < 10) {
 }
 return a;
 """);
-        StopNode stop = parser.parse().iterate(true);
+        StopNode stop = parser.parse().iterate();
         assertEquals("return Phi(Loop7,1,(Phi_a+3));", stop.toString());
         assertTrue(stop.ret().ctrl() instanceof ProjNode);
     }
@@ -146,11 +142,10 @@ while(arg) a = 2;
 return a;
 """);
         Node._disablePeephole = true;
-        StopNode stop = parser.parse(true);
+        StopNode stop = parser.parse();
         assertEquals("return Phi(Loop7,1,2);", stop.toString());
         assertTrue(stop.ret().ctrl() instanceof ProjNode);
         Node._disablePeephole = false;
-        System.out.println(IRPrinter.prettyPrint(stop,99));
     }
 
     @Test
@@ -164,7 +159,6 @@ return a;
         StopNode stop = parser.parse().iterate();
         assertEquals("return Phi(Loop7,1,2);", stop.toString());
         assertTrue(stop.ret().ctrl() instanceof ProjNode);
-        System.out.println(IRPrinter.prettyPrint(stop, 99));
     }
 
     @Test
@@ -179,7 +173,7 @@ while(a < 10) {
 return a;
 """);
         Node._disablePeephole = true;
-        StopNode stop = parser.parse(true);
+        StopNode stop = parser.parse();
         assertEquals("return Phi(Loop7,1,((Phi_a+1)+2));", stop.toString());
         assertTrue(stop.ret().ctrl() instanceof ProjNode);
         Node._disablePeephole = false;
@@ -196,7 +190,7 @@ while(a < 10) {
 }
 return a;
 """);
-        StopNode stop = parser.parse().iterate(true);
+        StopNode stop = parser.parse().iterate();
         assertEquals("return Phi(Loop7,1,(Phi_a+3));", stop.toString());
         assertTrue(stop.ret().ctrl() instanceof ProjNode);
     }
@@ -214,7 +208,7 @@ while(a < 10) {
 return a;
 """);
         Node._disablePeephole = true;
-        StopNode stop = parser.parse(true);
+        StopNode stop = parser.parse();
         assertEquals("return Phi(Loop8,1,((Phi_a+1)+2));", stop.toString());
         assertTrue(stop.ret().ctrl() instanceof ProjNode);
         Node._disablePeephole = false;
@@ -232,7 +226,7 @@ while(a < 10) {
 }
 return a;
 """);
-        StopNode stop = parser.parse().iterate(true);
+        StopNode stop = parser.parse().iterate();
         assertEquals("return Phi(Loop8,1,(Phi_a+3));", stop.toString());
         assertTrue(stop.ret().ctrl() instanceof ProjNode);
     }
diff --git a/chapter10/src/test/java/com/seaofnodes/simple/Chapter08Test.java b/chapter10/src/test/java/com/seaofnodes/simple/Chapter08Test.java
index 6e8d218f..6688d598 100644
--- a/chapter10/src/test/java/com/seaofnodes/simple/Chapter08Test.java
+++ b/chapter10/src/test/java/com/seaofnodes/simple/Chapter08Test.java
@@ -23,7 +23,7 @@ while(arg < 10) {
 }
 return arg;
                 """);
-        StopNode stop = parser.parse().iterate(true);
+        StopNode stop = parser.parse().iterate();
         assertEquals("return Phi(Region36,Phi(Region25,Phi(Loop6,arg,(Phi_arg+1)),Add),Add);", stop.toString());
         assertTrue(stop.ret().ctrl() instanceof RegionNode);
         Assert.assertEquals(5L, Evaluator.evaluate(stop, 1));
@@ -46,10 +46,9 @@ while(arg < 10) {
 }
 return a;
                 """);
-        StopNode stop = parser.parse().iterate(true);
+        StopNode stop = parser.parse().iterate();
         assertEquals("return Phi(Loop7,1,Phi(Region42,Phi_a,(Phi_a+1)));", stop.toString());
         assertTrue(stop.ret().ctrl() instanceof ProjNode);
-        System.out.println(IRPrinter.prettyPrint(stop,99));
     }
 
 
@@ -66,7 +65,7 @@ while(arg < 10) {
 }
 return arg;
                 """);
-        StopNode stop = parser.parse().iterate(true);
+        StopNode stop = parser.parse().iterate();
         assertEquals("return Phi(Region34,Phi(Loop6,arg,(Phi_arg+1)),Add);", stop.toString());
         assertTrue(stop.ret().ctrl() instanceof RegionNode);
     }
@@ -82,7 +81,7 @@ while(arg < 10) {
 }
 return arg;
                 """);
-        StopNode stop = parser.parse().iterate(true);
+        StopNode stop = parser.parse().iterate();
         assertEquals("return Phi(Region25,Phi(Loop6,arg,(Phi_arg+1)),Add);", stop.toString());
         assertTrue(stop.ret().ctrl() instanceof RegionNode);
     }
@@ -101,7 +100,7 @@ while(arg < 10) {
 }
 return arg;
                 """);
-        StopNode stop = parser.parse().iterate(true);
+        StopNode stop = parser.parse().iterate();
         assertEquals("return Phi(Loop6,arg,(Phi_arg+1));", stop.toString());
         assertTrue(stop.ret().ctrl() instanceof ProjNode);
     }
@@ -118,7 +117,7 @@ while(arg < 10) {
 }
 return arg;
                 """);
-        StopNode stop = parser.parse().iterate(true);
+        StopNode stop = parser.parse().iterate();
         assertEquals("return Phi(Loop6,arg,(Phi_arg+1));", stop.toString());
         assertTrue(stop.ret().ctrl() instanceof ProjNode);
     }
@@ -134,15 +133,14 @@ while( arg < 10 ) {
 }
 return arg;
                 """);
-        StopNode stop = parser.parse().iterate(true);
+        StopNode stop = parser.parse().iterate();
         assertEquals("return arg;", stop.toString());
-        System.out.println(IRPrinter.prettyPrint(stop,99));
     }
 
     @Test
     public void testRegress2() {
         Parser parser = new Parser("if(1) return 0;  else while(arg>--arg) arg=arg+1; return 0;");
-        StopNode stop = parser.parse().iterate(true);
+        StopNode stop = parser.parse().iterate();
         assertEquals("return 0;", stop.toString());
     }
 
@@ -170,7 +168,7 @@ while(arg < 10) {
 }
 return arg;
 """);
-        StopNode stop = parser.parse().iterate(true);
+        StopNode stop = parser.parse().iterate();
         assertEquals("return arg;", stop.toString());
     }
 
@@ -187,7 +185,7 @@ while(arg < 10) {
 }
 return a;
 """);
-        StopNode stop = parser.parse().iterate(true);
+        StopNode stop = parser.parse().iterate();
         assertEquals("return Phi(Region28,Phi(Loop7,1,(Phi_a+1)),Add);", stop.toString());
         assertTrue(stop.ret().ctrl() instanceof RegionNode);
     }
@@ -203,7 +201,7 @@ while(1) {
 }
 return a;
 """);
-        StopNode stop = parser.parse().iterate(true);
+        StopNode stop = parser.parse().iterate();
         assertEquals("return (Phi(Loop7,1,Add)+1);", stop.toString());
         assertTrue(stop.ret().ctrl() instanceof ProjNode prj && prj._idx==1 );
     }
diff --git a/chapter10/src/test/java/com/seaofnodes/simple/Chapter09Test.java b/chapter10/src/test/java/com/seaofnodes/simple/Chapter09Test.java
index 8e651858..048a58c7 100644
--- a/chapter10/src/test/java/com/seaofnodes/simple/Chapter09Test.java
+++ b/chapter10/src/test/java/com/seaofnodes/simple/Chapter09Test.java
@@ -26,7 +26,7 @@ while(v0) {
 }
 return 0;
                 """);
-        StopNode stop = parser.parse().iterate(true);
+        StopNode stop = parser.parse().iterate();
     }
 
     @Test
@@ -42,7 +42,7 @@ else {
 }
 return x;
                 """);
-        StopNode stop = parser.parse(true);
+        StopNode stop = parser.parse();
         assertEquals("Stop[ return (arg*2); return (Mul+1); ]", stop.toString());
         Assert.assertEquals(2L, Evaluator.evaluate(stop, 1));
         Assert.assertEquals(23L, Evaluator.evaluate(stop, 11));
@@ -54,7 +54,7 @@ return x;
                 """
 return arg*arg-arg*arg;
                 """);
-        StopNode stop = parser.parse(true);
+        StopNode stop = parser.parse();
         assertEquals("return 0;", stop.toString());
         Assert.assertEquals(0L, Evaluator.evaluate(stop, 1));
     }
@@ -69,7 +69,7 @@ while (arg < 10) {
 }
 return arg;
                 """);
-        StopNode stop = parser.parse(true).iterate(true);
+        StopNode stop = parser.parse().iterate();
         assertEquals("return Phi(Loop7,arg,(Phi_arg+2));", stop.toString());
         Assert.assertEquals(11L, Evaluator.evaluate(stop, 1));
     }
@@ -86,7 +86,7 @@ while (arg < 10) {
 }
 return arg;
                 """);
-        StopNode stop = parser.parse(true).iterate(true);
+        StopNode stop = parser.parse().iterate();
         assertEquals("return Phi(Loop8,arg,(Phi_arg+4));", stop.toString());
         Assert.assertEquals(13L, Evaluator.evaluate(stop, 1));
     }
@@ -115,7 +115,7 @@ while (arg) {
 }
 return arg;
                 """);
-        StopNode stop = parser.parse().iterate(true);
+        StopNode stop = parser.parse().iterate();
         assertEquals("return Phi(Loop14,arg,(Phi_arg+1));", stop.toString());
     }
 
@@ -133,14 +133,14 @@ while(v1+arg) {
     v1=v2;
 }
                 """);
-        StopNode stop = parser.parse().iterate(true);
+        StopNode stop = parser.parse().iterate();
         assertEquals("Stop[ ]", stop.toString());
     }
 
     @Test
     public void testWhile0() {
         Parser parser = new Parser("while(0) continue; if(0) arg=0;");
-        StopNode stop = parser.parse().iterate(true);
+        StopNode stop = parser.parse().iterate();
         assertEquals("Stop[ ]", stop.toString());
     }
 
@@ -152,7 +152,7 @@ if(0) while(0) {
     while(0) {}
 }
 """);
-        StopNode stop = parser.parse().iterate(true);
+        StopNode stop = parser.parse().iterate();
         assertEquals("Stop[ ]", stop.toString());
     }
 
@@ -160,14 +160,14 @@ if(0) while(0) {
     @Test
     public void testPrecedence() {
         Parser parser = new Parser("return 3-1+2;");
-        StopNode stop = parser.parse().iterate(true);
+        StopNode stop = parser.parse().iterate();
         assertEquals("return 4;", stop.toString());
     }
 
     @Test
     public void testSwap2() {
         Parser parser = new Parser("return 1+(1+1);");
-        StopNode stop = parser.parse().iterate(true);
+        StopNode stop = parser.parse().iterate();
         assertEquals("return 3;", stop.toString());
     }
 
@@ -185,7 +185,7 @@ while(arg) {
 }
 return a;
 """);
-        StopNode stop = parser.parse().iterate(true);
+        StopNode stop = parser.parse().iterate();
         assertEquals("return Phi(Loop9,0,(-(Phi_a+3)));", stop.toString());
     }
 
@@ -199,7 +199,7 @@ arg=0;
 int v0=0!=0<-0;
 return -0+0+0;
 """);
-        StopNode stop = parser.parse().iterate(true);
+        StopNode stop = parser.parse().iterate();
         assertEquals("Stop[ ]", stop.toString());
     }
 
@@ -207,14 +207,14 @@ return -0+0+0;
     @Test
     public void testFuzz2() {
         Parser parser = new Parser("return 0+-0;");
-        StopNode stop = parser.parse().iterate(true);
+        StopNode stop = parser.parse().iterate();
         assertEquals("return 0;", stop.toString());
     }
 
     @Test
     public void testFuzz3() {
         Parser parser = new Parser("int v0=0; while(0==69) while(v0) return 0;");
-        StopNode stop = parser.parse().iterate(true);
+        StopNode stop = parser.parse().iterate();
         assertEquals("Stop[ ]", stop.toString());
     }
 
@@ -226,7 +226,7 @@ while(1) {
     if(1<0) while(arg==-0) arg=arg-arg;
 }
 """);
-        StopNode stop = parser.parse().iterate(true);
+        StopNode stop = parser.parse().iterate();
         assertEquals("Stop[ ]", stop.toString());
     }
 
@@ -248,7 +248,7 @@ while(1) {
 }
 return 0!=0;
 """);
-        StopNode stop = parser.parse().iterate(true);
+        StopNode stop = parser.parse().iterate();
         assertEquals("Stop[ ]", stop.toString());
     }
 
@@ -259,7 +259,7 @@ int v0=0;
 while(0==1) while(v0)
         v0=1+v0;
                                    """);
-        StopNode stop = parser.parse().iterate(true);
+        StopNode stop = parser.parse().iterate();
         assertEquals("Stop[ ]", stop.toString());
     }
 
@@ -275,14 +275,14 @@ while(1)
         v1=1;
 return v1+v0;
                                    """);
-        StopNode stop = parser.parse().iterate(true);
+        StopNode stop = parser.parse().iterate();
         assertEquals("Stop[ ]", stop.toString());
     }
 
     @Test
     public void testFuzz8() {
-        Parser parser = new Parser("while(arg) arg = arg - 1; #showGraph; return arg;");
-        StopNode stop = parser.parse().iterate(true);
+        Parser parser = new Parser("while(arg) arg = arg - 1;  return arg;");
+        StopNode stop = parser.parse().iterate();
         assertEquals("return Phi(Loop6,arg,(Phi_arg-1));", stop.toString());
     }
 
diff --git a/chapter10/src/test/java/com/seaofnodes/simple/Chapter10Test.java b/chapter10/src/test/java/com/seaofnodes/simple/Chapter10Test.java
index 2e1ae1aa..f2e7ca2c 100644
--- a/chapter10/src/test/java/com/seaofnodes/simple/Chapter10Test.java
+++ b/chapter10/src/test/java/com/seaofnodes/simple/Chapter10Test.java
@@ -33,7 +33,7 @@ if( (arg/13)==0 ) {
 int r = g+h;
 return p-r;
 """);
-        StopNode stop = parser.parse(false).iterate(false);
+        StopNode stop = parser.parse().iterate();
         assertEquals("return 0;", stop.toString());
     }
 
@@ -53,8 +53,7 @@ bar.a = 1;
 bar.a = 2;
 return bar.a;
 """);
-        StopNode stop = parser.parse(false).iterate(true);
-        System.out.println(IRPrinter.prettyPrint(stop, 99, true));
+        StopNode stop = parser.parse().iterate();
         assertEquals("return 2;", stop.toString());
     }
 
@@ -70,8 +69,7 @@ else
     v.y = 3;
 return v;
 """);
-        StopNode stop = parser.parse(true).iterate(true);
-        System.out.println(IRPrinter.prettyPrint(stop, 99, true));
+        StopNode stop = parser.parse().iterate();
         assertEquals("return new Vector2D;", stop.toString());
     }
 
@@ -84,7 +82,7 @@ struct s0 {
 s0? v1=null;
 int v3=v1.zAicm;
 """);
-        try { parser.parse(true);  fail(); }
+        try { parser.parse();  fail(); }
         catch( Exception e ) {  assertEquals("Accessing unknown field 'zAicm' from 'null'",e.getMessage());  }
     }
 
@@ -94,7 +92,7 @@ int v3=v1.zAicm;
 struct s0 { int v0; }
 arg=0+new s0.0;
 """);
-        try { parser.parse(true); fail(); }
+        try { parser.parse(); fail(); }
         catch( Exception e ) { assertEquals("Expected an identifier, found 'null'",e.getMessage()); }
     }
 
@@ -109,7 +107,7 @@ while (arg) {
 }
 return bar.a;
 """);
-        StopNode stop = parser.parse(false).iterate(true);
+        StopNode stop = parser.parse().iterate();
         assertEquals("return Phi(Loop10,0,(Phi_a+2));", stop.toString());
     }
 
@@ -122,7 +120,7 @@ if (arg) bar = null;
 bar.a = 1;
 return bar.a;
 """);
-        try { parser.parse(true).iterate(true); fail(); }
+        try { parser.parse().iterate(); fail(); }
         catch( Exception e ) { assertEquals("Type null is not of declared type *Bar",e.getMessage()); }
     }
 
@@ -135,7 +133,7 @@ if (arg) bar = new Bar;
 bar.a = 1;
 return bar.a;
 """);
-        try { parser.parse(true).iterate(true); fail(); }
+        try { parser.parse().iterate(); fail(); }
         catch( Exception e ) { assertEquals("Might be null accessing 'a'",e.getMessage()); }
     }
 
@@ -148,7 +146,7 @@ if (arg) bar = null;
 bar.a = 1;
 return bar.a;
 """);
-        try { parser.parse(true); fail(); }
+        try { parser.parse(); fail(); }
         catch( Exception e ) { assertEquals("Type null is not of declared type *Bar", e.getMessage()); }
     }
 
@@ -161,7 +159,7 @@ if (arg) bar = null;
 if( bar ) bar.a = 1;
 return bar;
 """);
-        StopNode stop = parser.parse(false).iterate(true);
+        StopNode stop = parser.parse().iterate();
         assertEquals("return Phi(Region15,null,new Bar);", stop.toString());
     }
 
@@ -177,7 +175,7 @@ if( !bar ) rez=4;
 else bar.a = 1;
 return rez;
 """);
-        StopNode stop = parser.parse(false).iterate(true);
+        StopNode stop = parser.parse().iterate();
         assertEquals("return Phi(Region32,4,3);", stop.toString());
     }
 
@@ -194,7 +192,7 @@ while(arg) {
 }
 return ret;
 """);
-        try { parser.parse(true).iterate(true); fail(); }
+        try { parser.parse().iterate(); fail(); }
         catch( Exception e ) { assertEquals("Might be null accessing 'v0'", e.getMessage()); }
     }
 
@@ -208,7 +206,7 @@ s0? v1=new s0;
 s0? v1;
 v1=new s0;
 """);
-        try { parser.parse(true); fail(); }
+        try { parser.parse(); fail(); }
         catch( Exception e ) { assertEquals("Redefining name 'v1'", e.getMessage()); }
     }
 
@@ -230,7 +228,7 @@ while( i.x < i.len ) {
 }
 return sum;
 """);
-        StopNode stop = parser.parse().iterate(true);
+        StopNode stop = parser.parse().iterate();
         assertEquals("return Phi(Loop14,0,(Phi(Loop,0,(Phi_x+1))+Phi_sum));", stop.toString());
     }
 
@@ -247,12 +245,10 @@ while(arg) {
     v0.v0 = arg;
     arg = arg-1;
     if (arg==5) ret=v0;
-    #showGraph;
 }
 return ret;
 """);
-        StopNode stop = parser.parse(true).iterate(true);
-        System.out.println(IRPrinter.prettyPrint(stop, 99, true));
+        StopNode stop = parser.parse().iterate();
         assertEquals("return Phi(Loop10,new s0,Phi(Region31,new s0,Phi_ret));", stop.toString());
     }
 
@@ -266,12 +262,10 @@ while(arg) {
     v0.v0 = arg;
     arg = arg-1;
     if (arg==5) ret=v0;
-        #showGraph;
 }
 return ret;
 """);
-        StopNode stop = parser.parse(true).iterate(true);
-        System.out.println(IRPrinter.prettyPrint(stop, 99, true));
+        StopNode stop = parser.parse().iterate();
         assertEquals("return Phi(Loop13,new s0,Phi(Region32,new s0,Phi_ret));", stop.toString());
     }
 
@@ -288,8 +282,7 @@ while(arg < 10) {
 }
 return ret;
 """);
-        StopNode stop = parser.parse(true).iterate(true);
-        System.out.println(IRPrinter.prettyPrint(stop, 99, true));
+        StopNode stop = parser.parse().iterate();
         assertEquals("return Phi(Loop10,new s0,Phi(Region30,new s0,Phi_ret));", stop.toString());
     }
 
@@ -303,7 +296,7 @@ if(0>=0) return new s0;
 return new s0;
 int v0=null.f0;
 """);
-        try { parser.parse(true); fail(); }
+        try { parser.parse(); fail(); }
         catch( Exception e ) { assertEquals("Accessing unknown field 'f0' from 'null'", e.getMessage()); }
     }
 
@@ -319,7 +312,7 @@ if(0) {
     }
 }
    """);
-        StopNode stop = parser.parse(true).iterate(true);
+        StopNode stop = parser.parse().iterate();
         assertEquals("Stop[ ]", stop.toString());
     }
 
@@ -333,7 +326,7 @@ if(0) return 0;
 else return new s0;
 if(new s0.f0) return 0;
     """);
-        StopNode stop = parser.parse(true).iterate(true);
+        StopNode stop = parser.parse().iterate();
         assertEquals("return new s0;", stop.toString());
     }
 
@@ -349,7 +342,7 @@ while(0<arg) {
 }
 return 0;
     """);
-        StopNode stop = parser.parse().iterate(true);
+        StopNode stop = parser.parse().iterate();
     }
 
     @Test
@@ -361,7 +354,7 @@ while(v0.f0) {}
 s0 v1 = v0;
 return v1;
     """);
-        StopNode stop = parser.parse().iterate(true);
+        StopNode stop = parser.parse().iterate();
         assertEquals("return new s0;", stop.toString());
     }
 
@@ -393,7 +386,7 @@ while(0) {}
         }    }
 }
 """);
-        StopNode stop = parser.parse().iterate(true);
+        StopNode stop = parser.parse().iterate();
         assertEquals("Stop[ ]", stop.toString());
     }
 
@@ -404,7 +397,7 @@ int v0=arg==0;
 while(v0) continue;
 return 0;
 """);
-        StopNode stop = parser.parse().iterate(true);
+        StopNode stop = parser.parse().iterate();
         assertEquals("return 0;", stop.toString());
     }
 
diff --git a/chapter10/src/test/java/com/seaofnodes/simple/SchedulerTest.java b/chapter10/src/test/java/com/seaofnodes/simple/SchedulerTest.java
index e5961815..5def2782 100644
--- a/chapter10/src/test/java/com/seaofnodes/simple/SchedulerTest.java
+++ b/chapter10/src/test/java/com/seaofnodes/simple/SchedulerTest.java
@@ -31,7 +31,7 @@ if (arg) v.f=1;
 return i;
 """);
         StopNode._disablePeephole = true;
-        StopNode stop = parser.parse(true);//.iterate(true);
+        StopNode stop = parser.parse(true);//.iterate();
         var eval = new Evaluator(stop);
         assertEquals(2L, eval.evaluate(1, 10));
     }
@@ -46,7 +46,7 @@ S v0=new S;
 if(arg) v0.f=1;
 return v0;
 """);
-        StopNode stop = parser.parse(false).iterate(true);
+        StopNode stop = parser.parse().iterate();
         var eval = new Evaluator(stop);
         assertObj(eval.evaluate(0, 10), "S", 0L);
         assertObj(eval.evaluate(1, 10), "S", 1L);
@@ -65,7 +65,7 @@ i=v.f;
 if (arg) v.f=1;
 return i;
 """);
-        StopNode stop = parser.parse(false).iterate(true);
+        StopNode stop = parser.parse().iterate();
         var eval = new Evaluator(stop);
         assertEquals(2L, eval.evaluate(0, 10));
         assertEquals(2L, eval.evaluate(1, 10));