From f613348651956d68e225ffc184dd6eabaea5326a Mon Sep 17 00:00:00 2001
From: Cliff Click <cliffc@acm.org>
Date: Fri, 13 Jun 2025 15:42:08 -0700
Subject: Chapter 24: Chaining Relationals and Sparse Conditional Constant
 Propagation
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Co-authored-by: Tamás Hadházy <85063808+Hels15@users.noreply.github.com>
Co-authored-by: Hsiang-Ying Fu <66062782+fuhsnn@users.noreply.github.com>
Co-authored-by: fuhsnn <66062782+fuhsnn@users.noreply.github.com>
Co-authored-by: Symious <14933944+symious@users.noreply.github.com>
Co-authored-by: Jun Kawasaki <jun784@gmail.com>
Co-authored-by: Hadházy Tamás <helsgithub15@gmail.com>
Co-authored-by: Claude Opus 5 <noreply@anthropic.com>
---
 .../java/com/seaofnodes/simple/BrainFuckTest.java  |   61 +-
 .../java/com/seaofnodes/simple/Chapter05Test.java  |   16 +-
 .../java/com/seaofnodes/simple/Chapter06Test.java  |   32 +-
 .../java/com/seaofnodes/simple/Chapter07Test.java  |   14 +-
 .../java/com/seaofnodes/simple/Chapter08Test.java  |   22 +-
 .../java/com/seaofnodes/simple/Chapter09Test.java  |   40 +-
 .../java/com/seaofnodes/simple/Chapter10Test.java  |   44 +-
 .../java/com/seaofnodes/simple/Chapter11Test.java  |    6 +-
 .../java/com/seaofnodes/simple/Chapter12Test.java  |   14 +-
 .../java/com/seaofnodes/simple/Chapter13Test.java  |  316 +-
 .../com/seaofnodes/simple/Chapter14FloatTest.java  |    8 +-
 .../java/com/seaofnodes/simple/Chapter14Test.java  |   28 +-
 .../java/com/seaofnodes/simple/Chapter15Test.java  |   38 +-
 .../java/com/seaofnodes/simple/Chapter16Test.java  |   18 +-
 .../java/com/seaofnodes/simple/Chapter17aTest.java |   10 +-
 .../java/com/seaofnodes/simple/Chapter17bTest.java |   70 +-
 .../java/com/seaofnodes/simple/Chapter18Test.java  |   32 +-
 .../java/com/seaofnodes/simple/Chapter19Test.java  |   85 +-
 .../java/com/seaofnodes/simple/Chapter20Test.java  |    4 +-
 .../java/com/seaofnodes/simple/Chapter21Test.java  |  187 +-
 .../java/com/seaofnodes/simple/Chapter22Test.java  |   54 +-
 .../java/com/seaofnodes/simple/Chapter23Test.java  |  157 +-
 .../com/seaofnodes/simple/Chapter24AllocTest.java  |  170 +
 .../java/com/seaofnodes/simple/Chapter24Test.java  |  735 +++
 src/test/java/com/seaofnodes/simple/Eval2.java     |   21 +-
 .../com/seaofnodes/simple/MemoryEncodingTest.java  |    5 +-
 .../java/com/seaofnodes/simple/MergeSortTest.java  |   46 +-
 src/test/java/com/seaofnodes/simple/PhaseTest.java |   16 +-
 .../java/com/seaofnodes/simple/SchedulerTest.java  |    6 +-
 src/test/java/com/seaofnodes/simple/Simple.java    |    8 +-
 .../java/com/seaofnodes/simple/SpillStats.java     |    5 +-
 src/test/java/com/seaofnodes/simple/TestArm64.java |   12 +-
 src/test/java/com/seaofnodes/simple/TestC.java     |   17 +
 src/test/java/com/seaofnodes/simple/TestRisc5.java |   12 +-
 src/test/java/com/seaofnodes/simple/TypeTest.java  |   16 +
 .../simple/codegen/RegAllocTestSupport.java        |   27 +
 .../com/seaofnodes/simple/evaluator/Scheduler.java |    2 +-
 .../java/com/seaofnodes/simple/fuzzer/Fuzzer.java  |    2 +-
 .../java/com/seaofnodes/simple/fuzzer/Reducer.java |    2 +-
 .../seaofnodes/simple/fuzzer/ScriptGenerator.java  |    4 +-
 src/test/java/com/seaofnodes/simple/progs/and1.smp |   10 -
 src/test/java/com/seaofnodes/simple/progs/and2.smp |   16 -
 src/test/java/com/seaofnodes/simple/progs/and3.smp |   14 -
 .../java/com/seaofnodes/simple/progs/antiDep1.smp  |   11 -
 .../com/seaofnodes/simple/progs/brain_fuck.smp     |   46 -
 src/test/java/com/seaofnodes/simple/progs/echo.smp |    3 -
 src/test/java/com/seaofnodes/simple/progs/fib.smp  |   11 -
 .../com/seaofnodes/simple/progs/helloWorld.smp     |    3 -
 .../java/com/seaofnodes/simple/progs/large.smp     | 5344 --------------------
 .../java/com/seaofnodes/simple/progs/loop2.smp     |   10 -
 src/test/java/com/seaofnodes/simple/progs/or1.smp  |   12 -
 src/test/java/com/seaofnodes/simple/progs/or2.smp  |   23 -
 .../java/com/seaofnodes/simple/progs/person.smp    |    9 -
 .../java/com/seaofnodes/simple/progs/print.smp     |    8 -
 .../java/com/seaofnodes/simple/progs/ptrand.smp    |   10 -
 .../com/seaofnodes/simple/progs/riscv_load.smp     |    4 -
 .../com/seaofnodes/simple/progs/sext_str_1.smp     |    4 -
 .../seaofnodes/simple/progs/sext_str_fold_away.smp |    5 -
 .../simple/progs/sext_str_not_fold_away.smp        |    4 -
 .../simple/progs/sext_str_not_fold_away_2.smp      |    4 -
 .../java/com/seaofnodes/simple/progs/sieve.smp     |   31 -
 src/test/java/com/seaofnodes/simple/progs/sort.smp |   38 -
 .../com/seaofnodes/simple/progs/stacked_r_10x.c    |   13 +
 .../com/seaofnodes/simple/progs/stacked_r_11x.c    |   13 +
 .../com/seaofnodes/simple/progs/stacked_r_12x.c    |   13 +
 .../com/seaofnodes/simple/progs/stacked_r_13x.c    |   13 +
 .../com/seaofnodes/simple/progs/stacked_r_9x.c     |   13 +
 .../com/seaofnodes/simple/progs/store_peep.smp     |    3 -
 68 files changed, 1823 insertions(+), 6227 deletions(-)
 create mode 100644 src/test/java/com/seaofnodes/simple/Chapter24AllocTest.java
 create mode 100644 src/test/java/com/seaofnodes/simple/Chapter24Test.java
 delete mode 100644 src/test/java/com/seaofnodes/simple/progs/and1.smp
 delete mode 100644 src/test/java/com/seaofnodes/simple/progs/and2.smp
 delete mode 100644 src/test/java/com/seaofnodes/simple/progs/and3.smp
 delete mode 100644 src/test/java/com/seaofnodes/simple/progs/antiDep1.smp
 delete mode 100644 src/test/java/com/seaofnodes/simple/progs/brain_fuck.smp
 delete mode 100644 src/test/java/com/seaofnodes/simple/progs/echo.smp
 delete mode 100644 src/test/java/com/seaofnodes/simple/progs/fib.smp
 delete mode 100644 src/test/java/com/seaofnodes/simple/progs/helloWorld.smp
 delete mode 100644 src/test/java/com/seaofnodes/simple/progs/large.smp
 delete mode 100644 src/test/java/com/seaofnodes/simple/progs/loop2.smp
 delete mode 100644 src/test/java/com/seaofnodes/simple/progs/or1.smp
 delete mode 100644 src/test/java/com/seaofnodes/simple/progs/or2.smp
 delete mode 100644 src/test/java/com/seaofnodes/simple/progs/person.smp
 delete mode 100644 src/test/java/com/seaofnodes/simple/progs/print.smp
 delete mode 100644 src/test/java/com/seaofnodes/simple/progs/ptrand.smp
 delete mode 100644 src/test/java/com/seaofnodes/simple/progs/riscv_load.smp
 delete mode 100644 src/test/java/com/seaofnodes/simple/progs/sext_str_1.smp
 delete mode 100644 src/test/java/com/seaofnodes/simple/progs/sext_str_fold_away.smp
 delete mode 100644 src/test/java/com/seaofnodes/simple/progs/sext_str_not_fold_away.smp
 delete mode 100644 src/test/java/com/seaofnodes/simple/progs/sext_str_not_fold_away_2.smp
 delete mode 100644 src/test/java/com/seaofnodes/simple/progs/sieve.smp
 delete mode 100644 src/test/java/com/seaofnodes/simple/progs/sort.smp
 create mode 100644 src/test/java/com/seaofnodes/simple/progs/stacked_r_10x.c
 create mode 100644 src/test/java/com/seaofnodes/simple/progs/stacked_r_11x.c
 create mode 100644 src/test/java/com/seaofnodes/simple/progs/stacked_r_12x.c
 create mode 100644 src/test/java/com/seaofnodes/simple/progs/stacked_r_13x.c
 create mode 100644 src/test/java/com/seaofnodes/simple/progs/stacked_r_9x.c
 delete mode 100644 src/test/java/com/seaofnodes/simple/progs/store_peep.smp

(limited to 'src/test/java/com/seaofnodes')

diff --git a/src/test/java/com/seaofnodes/simple/BrainFuckTest.java b/src/test/java/com/seaofnodes/simple/BrainFuckTest.java
index 9f626805..a3b98fe0 100644
--- a/src/test/java/com/seaofnodes/simple/BrainFuckTest.java
+++ b/src/test/java/com/seaofnodes/simple/BrainFuckTest.java
@@ -5,8 +5,6 @@ import com.seaofnodes.isa.eval.EvalRisc5;
 import com.seaofnodes.isa.eval.EvalArm64;
 
 import com.seaofnodes.simple.codegen.CodeGen;
-import com.seaofnodes.simple.node.cpus.arm.arm;
-import com.seaofnodes.simple.node.cpus.riscv.riscv;
 import java.io.IOException;
 import java.nio.file.Files;
 import java.nio.file.Path;
@@ -18,21 +16,70 @@ public class BrainFuckTest {
 
     @Test public void testBrainFuck() throws IOException {
         String brain_fuck = "Hello World!\n";
-        TestC.run("brain_fuck", brain_fuck, 40);
+        String src =
+"""
+// -*- mode: java;  -*-
+val brain_fuck = { ->
+    var !program = "++++++++[>++++[>++>+++>+++>+<<<<-]>+>+>->>+[<]<-]>>.>---.+++++++..+++.>>.<-.<.+++.------.--------.>>+.>++.";
+    int d = 0;
+    u8[] !output = new u8[0];
+    u8[] !data = new u8[100];
 
-        EvalRisc5 R5 = TestRisc5.build("brain_fuck", 0, 28, false);
+    for( int pc = 0; pc < program#; pc++ ) {
+        var command = program[pc];
+        if (command == 62) {
+            d++;
+        } else if (command == 60) {
+            d--;
+        } else if (command == 43) {
+            data[d]++;
+        } else if (command == 45) {
+            data[d]--;
+        } else if (command == 46) {
+            // Output a byte; increase the output array size
+            var old = output;
+            output = new u8[output# + 1];
+            for( int i = 0; i < old#; i++ )
+                output[i] = old[i];
+            output[old#] = data[d]; // Add the extra byte on the end
+        } else if (command == 44) {
+            data[d] = 42;
+        } else if (command == 91) {
+            if (data[d] == 0) {
+                for( int d = 1; d > 0; ) {
+                    command = program[++pc];
+                    if (command == 91) d++;
+                    if (command == 93) d--;
+                }
+            }
+        } else if (command == 93) {
+            if (data[d]) {
+                for( int d = 1; d > 0; ) {
+                    command = program[--pc];
+                    if (command == 93) d++;
+                    if (command == 91) d--;
+                }
+            }
+        }
+    }
+    return output;
+};
+""";
+        TestC.run(src,"brain_fuck", null, brain_fuck, 40);
+
+        EvalRisc5 R5 = TestRisc5.build("brain_fuck", src, 0, 28, false);
         int trap = R5.step(100000);
         assertEquals(0,trap);
-        int ptr = (int)R5.regs[riscv.A0];
+        int ptr = (int)R5.regs[com.seaofnodes.simple.node.cpus.riscv.riscv.A0];
         assertEquals(brain_fuck.length(),R5.ld4s(ptr));
         for( int i=0; i<brain_fuck.length(); i++ )
             assertEquals(brain_fuck.charAt(i), R5.ld1z(ptr+4+i));
 
-        EvalArm64 A5 = TestArm64.build("brain_fuck", 0, 28, false);
+        EvalArm64 A5 = TestArm64.build("brain_fuck", src, 0, 28, false);
         int trap_arm = A5.step(100000);
         assertEquals(0,trap_arm);
         assertEquals(0,trap);
-        int ptr_arm = (int)A5.regs[arm.X0];
+        int ptr_arm = (int)A5.regs[com.seaofnodes.simple.node.cpus.arm.arm.X0];
         assertEquals(brain_fuck.length(),A5.ld4s(ptr_arm));
 
         for( int i=0; i<brain_fuck.length(); i++ )
diff --git a/src/test/java/com/seaofnodes/simple/Chapter05Test.java b/src/test/java/com/seaofnodes/simple/Chapter05Test.java
index 8168594a..b234209f 100644
--- a/src/test/java/com/seaofnodes/simple/Chapter05Test.java
+++ b/src/test/java/com/seaofnodes/simple/Chapter05Test.java
@@ -20,7 +20,7 @@ else {
 }
 return a;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return Phi(Region,(arg+2),(arg-3));", code.print());
     }
 
@@ -36,7 +36,7 @@ if (arg == 1) {
 }
 return c;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return Phi(Region,4,3);", code.print());
     }
 
@@ -64,7 +64,7 @@ if( arg==1 )
 else
     b=a+1;
 return a+b;""");
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return ((arg<<1)+Phi(Region,2,3));", code.print());
     }
 
@@ -79,7 +79,7 @@ if( arg==1 )
 else
     a=b+1;
 return a+b;""");
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return ((Phi(Region,(arg<<1),arg)+arg)+Phi(Region,4,5));", code.print());
     }
 
@@ -99,7 +99,7 @@ else
     a=5;
 return a;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return Phi(Region,3,5,2,4);", code.print());
     }
 
@@ -115,7 +115,7 @@ if( arg==0 )
     b=2;
 return arg+a+b;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return ((arg+Phi(Region,1,0))+Phi(Region,2,0));", code.print());
     }
 
@@ -130,7 +130,7 @@ if( arg==1 )
 }
 return a;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return (arg==Phi(Region,3,2));", code.print());
     }
 
@@ -145,7 +145,7 @@ else
     a=3;
 return a;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return 3;", code.print());
     }
 
diff --git a/src/test/java/com/seaofnodes/simple/Chapter06Test.java b/src/test/java/com/seaofnodes/simple/Chapter06Test.java
index d817a015..53fcefed 100644
--- a/src/test/java/com/seaofnodes/simple/Chapter06Test.java
+++ b/src/test/java/com/seaofnodes/simple/Chapter06Test.java
@@ -15,7 +15,7 @@ public class Chapter06Test {
 if( true ) return 2;
 return 1;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return 2;", code.print());
         assertTrue(code.ctrl() instanceof FunNode);
     }
@@ -29,7 +29,7 @@ if (arg)
     a = 2;
 return (arg < a) < 3; // Because (arg < a) is a bool/uint1/[0-1], its always less than 3
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return 1;", code.print());
     }
 
@@ -44,7 +44,7 @@ else
   a=3;
 return a;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return 2;", code.print());
         assertTrue(code.ctrl() instanceof FunNode);
     }
@@ -65,7 +65,7 @@ else
     b=5;
 return b;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return Phi(Region,42,5);", code.print());
     }
 
@@ -84,7 +84,7 @@ if( arg==2 )
 else
     b=5;
 return b;""");
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return Phi(Region,2,5);", code.print());
     }
 
@@ -104,7 +104,7 @@ else if( arg==3 )
 else
     a=5;
 return a;
-""", TypeInteger.constant(2), 123L, true).parse().iter().finalizeIR();
+""", TypeInteger.constant(2), 123L, true).driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return 5;", code.print());
     }
 
@@ -124,7 +124,7 @@ else if( arg==3 )
 else
     a=5;
 return a;
-""", TypeInteger.constant(1), 123L, true).parse().iter().finalizeIR();
+""", TypeInteger.constant(1), 123L, true).driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return 3;", code.print());
     }
 
@@ -144,7 +144,7 @@ else
     a=5;
 return a;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return Phi(Region,3,5,4);", code.print());
     }
 
@@ -165,7 +165,7 @@ else
     a=5;
 return a;
 """, TypeInteger.constant(1), 123L, true);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return 3;", code.print());
     }
 
@@ -186,7 +186,7 @@ else
     a=5;
 return a;
 """, TypeInteger.constant(3), 123L, true);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return 4;", code.print());
     }
 
@@ -202,7 +202,7 @@ if( arg ) {
 }
 return a+b;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return Phi(Region,4,1);", code.print());
     }
 
@@ -221,7 +221,7 @@ if( arg ) {
 }
 return a+b;
 """, TypeInteger.constant(1), 123L, true);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return 4;", code.print());
     }
 
@@ -239,7 +239,7 @@ if( arg ) {
 }
 return a+b;
 """, TypeInteger.constant(0), 123L, true);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return 1;", code.print());
     }
 
@@ -257,7 +257,7 @@ if( arg ) {
 }
 return a+b+c;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return Phi(Region,6,1,5);", code.print());
     }
 
@@ -278,7 +278,7 @@ if( arg ) {
 }
 return a+b+c;
 """, TypeInteger.constant(1), 123L, true);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return 6;", code.print());
     }
 
@@ -298,7 +298,7 @@ if( arg ) {
 }
 return a+b+c;
 """, TypeInteger.constant(2), 123L, true);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return 5;", code.print());
     }
 
diff --git a/src/test/java/com/seaofnodes/simple/Chapter07Test.java b/src/test/java/com/seaofnodes/simple/Chapter07Test.java
index 0ebc427c..8db31bc1 100644
--- a/src/test/java/com/seaofnodes/simple/Chapter07Test.java
+++ b/src/test/java/com/seaofnodes/simple/Chapter07Test.java
@@ -34,7 +34,7 @@ if(arg){}else{
 }
 return a;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return Phi(Region,1,Phi(Loop,1,(Phi_a+1)));", code.print());
     }
 
@@ -54,7 +54,7 @@ while(i < arg) {
 }
 return sum;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return Phi(Loop,0,Phi(Loop,Phi_sum,(Phi_sum+Phi(Loop,0,(Phi_j+1)))));", code.print());
     }
 
@@ -89,7 +89,7 @@ while(a < 10) {
 }
 return b;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return Phi(Loop,2,(Phi(Region,Phi_b,4)+1));", code.print());
         assertTrue(code.ctrl() instanceof CProjNode);
     }
@@ -122,7 +122,7 @@ while(a < 10) {
 }
 return a;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return Phi(Loop,1,(Phi_a+3));", code.print());
         assertTrue(code.ctrl() instanceof CProjNode);
     }
@@ -148,7 +148,7 @@ int a = 1;
 while(arg) a = 2;
 return a;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return Phi(Loop,1,2);", code.print());
         assertTrue(code.ctrl() instanceof CProjNode);
     }
@@ -180,7 +180,7 @@ while(a < 10) {
 }
 return a;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return Phi(Loop,1,(Phi_a+3));", code.print());
         assertTrue(code.ctrl() instanceof CProjNode);
     }
@@ -214,7 +214,7 @@ while(a < 10) {
 }
 return a;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return Phi(Loop,1,(Phi_a+3));", code.print());
         assertTrue(code.ctrl() instanceof CProjNode);
     }
diff --git a/src/test/java/com/seaofnodes/simple/Chapter08Test.java b/src/test/java/com/seaofnodes/simple/Chapter08Test.java
index 543b91d1..376e472b 100644
--- a/src/test/java/com/seaofnodes/simple/Chapter08Test.java
+++ b/src/test/java/com/seaofnodes/simple/Chapter08Test.java
@@ -22,7 +22,7 @@ while(arg < 10) {
 }
 return arg;
                 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return Phi(Region,(Phi(Loop,arg,Add)+1),Add,Phi_arg);", code.print());
         assertTrue(code.ctrl() instanceof RegionNode);
         Assert.assertEquals( "5", Eval2.eval(code, 1));
@@ -45,7 +45,7 @@ while(arg < 10) {
 }
 return a;
                 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return Phi(Loop,1,Phi(Region,Phi_a,(Phi_a+1),Phi_a));", code.print());
         assertTrue(code.ctrl() instanceof CProjNode);
     }
@@ -64,7 +64,7 @@ while(arg < 10) {
 }
 return arg;
                 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return Phi(Region,Phi(Loop,arg,(Phi_arg+1)),Add);", code.print());
         assertTrue(code.ctrl() instanceof RegionNode);
     }
@@ -80,7 +80,7 @@ while(arg < 10) {
 }
 return arg;
                 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return Phi(Region,Phi(Loop,arg,(Phi_arg+1)),Add);", code.print());
         assertTrue(code.ctrl() instanceof RegionNode);
     }
@@ -99,7 +99,7 @@ while(arg < 10) {
 }
 return arg;
                 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return Phi(Loop,arg,(Phi_arg+1));", code.print());
         assertTrue(code.ctrl() instanceof CProjNode);
     }
@@ -116,7 +116,7 @@ while(arg < 10) {
 }
 return arg;
                 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return Phi(Loop,arg,(Phi_arg+1));", code.print());
         assertTrue(code.ctrl() instanceof CProjNode);
     }
@@ -132,14 +132,14 @@ while( arg < 10 ) {
 }
 return arg;
                 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return arg;", code.print());
     }
 
     @Test
     public void testRegress2() {
         CodeGen code = new CodeGen("if(1) return 0;  else while(arg>- -arg) arg=arg+1; return 0;");
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return 0;", code.print());
     }
 
@@ -167,7 +167,7 @@ while(arg < 10) {
 }
 return arg;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return arg;", code.print());
     }
 
@@ -184,7 +184,7 @@ while(arg < 10) {
 }
 return a;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return Phi(Region,Phi(Loop,1,(Phi_a+1)),Add);", code.print());
         assertTrue(code.ctrl() instanceof RegionNode);
     }
@@ -200,7 +200,7 @@ while(1) {
 }
 return a;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return (Phi(Loop,1,Add)+1);", code.print());
         assertTrue(code.ctrl() instanceof CProjNode prj && prj._idx==1 );
     }
diff --git a/src/test/java/com/seaofnodes/simple/Chapter09Test.java b/src/test/java/com/seaofnodes/simple/Chapter09Test.java
index 3a4415d9..f24d96eb 100644
--- a/src/test/java/com/seaofnodes/simple/Chapter09Test.java
+++ b/src/test/java/com/seaofnodes/simple/Chapter09Test.java
@@ -24,7 +24,7 @@ while(v0) {
 }
 return 0;
                 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
     }
 
     @Test
@@ -40,7 +40,7 @@ else {
 }
 return x;
                 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return Phi(Region,(arg<<1),(Shl+1));", code.print());
         Assert.assertEquals( "2", Eval2.eval(code,  1));
         Assert.assertEquals("23", Eval2.eval(code, 11));
@@ -49,7 +49,7 @@ return x;
     @Test
     public void testGVN2() {
         CodeGen code = new CodeGen("return arg*arg-arg*arg;");
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return 0;", code.print());
         Assert.assertEquals("0", Eval2.eval(code,  1, 1));
     }
@@ -63,7 +63,7 @@ while (arg < 10) {
 }
 return arg;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return Phi(Loop,arg,(Phi_arg+2));", code.print());
         Assert.assertEquals("11", Eval2.eval(code,  1));
     }
@@ -80,7 +80,7 @@ while (arg < 10) {
 }
 return arg;
                 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return Phi(Loop,arg,(Phi_arg+4));", code.print());
         Assert.assertEquals("13", Eval2.eval(code,  1));
     }
@@ -109,7 +109,7 @@ while (arg) {
 }
 return arg;
                 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return 0;", code.print());
     }
 
@@ -128,14 +128,14 @@ while(v1+arg) {
 }
 return 0;
                 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return 0;", code.print());
     }
 
     @Test
     public void testWhile0() {
         CodeGen code = new CodeGen("while(0) continue; if(0) arg=0; return arg;");
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return arg;", code.print());
     }
 
@@ -148,7 +148,7 @@ if(0) while(0) {
 }
 return 0;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return 0;", code.print());
     }
 
@@ -156,14 +156,14 @@ return 0;
     @Test
     public void testPrecedence() {
         CodeGen code = new CodeGen("return 3-1+2;");
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return 4;", code.print());
     }
 
     @Test
     public void testSwap2() {
         CodeGen code = new CodeGen("return 1+(1+1);");
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return 3;", code.print());
     }
 
@@ -181,7 +181,7 @@ while(arg) {
 }
 return a;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return Phi(Loop,0,(-(Phi_a+3)));", code.print());
     }
 
@@ -195,7 +195,7 @@ arg=0;
 int v0=0!=0<-0;
 return -0+0+0;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return Top;", code.print());
     }
 
@@ -203,14 +203,14 @@ return -0+0+0;
     @Test
     public void testFuzz2() {
         CodeGen code = new CodeGen("return 0+-0;");
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return 0;", code.print());
     }
 
     @Test
     public void testFuzz3() {
         CodeGen code = new CodeGen("int v0=0; while(0==69) while(v0) return 0; return 0;");
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return 0;", code.print());
     }
 
@@ -222,7 +222,7 @@ while(1) {
     if(1<0) while(arg==-0) arg=arg-arg;
 }
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return Top;", code.print());
     }
 
@@ -244,7 +244,7 @@ while(1) {
 }
 return 0!=0;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return Top;", code.print());
     }
 
@@ -257,7 +257,7 @@ while(0==1) while(v0)
         v0=1+v0;
 return 0;        
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return 0;", code.print());
     }
 
@@ -273,14 +273,14 @@ while(1)
         v1=1;
 return v1+v0;
                                    """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return Top;", code.print());
     }
 
     @Test
     public void testFuzz8() {
         CodeGen code = new CodeGen("while(arg) arg = arg - 1;  return arg;");
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return 0;", code.print());
     }
 
diff --git a/src/test/java/com/seaofnodes/simple/Chapter10Test.java b/src/test/java/com/seaofnodes/simple/Chapter10Test.java
index 4fd20b18..afe0b141 100644
--- a/src/test/java/com/seaofnodes/simple/Chapter10Test.java
+++ b/src/test/java/com/seaofnodes/simple/Chapter10Test.java
@@ -120,7 +120,7 @@ if( (arg/13)==0 ) {
 int r = g+h;
 return p-r;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return 0;", code.print());
     }
 
@@ -140,7 +140,7 @@ bar.a = 1;
 bar.a = 2;
 return bar.a;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return 2;", code.print());
     }
 
@@ -156,7 +156,7 @@ else
     v.y = 3;
 return v;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return Vector2D;", code.print());
     }
 
@@ -194,7 +194,7 @@ while (arg) {
 }
 return bar.a;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return Phi(Loop,0,(Phi_a+2));", code.print());
     }
 
@@ -246,7 +246,7 @@ if (arg) bar = null;
 if( bar ) bar.a = 1;
 return bar;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return Phi(Region,null,Bar);", code.print());
     }
 
@@ -262,7 +262,7 @@ if( !bar ) rez=4;
 else bar.a = 1;
 return rez;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return Phi(Region,4,3);", code.print());
     }
 
@@ -316,7 +316,7 @@ while( i.x < i.len ) {
 }
 return sum;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return Phi(Loop,0,(Phi(Loop,0,(Phi_x+1))+Phi_sum));", code.print());
     }
 
@@ -335,7 +335,7 @@ while(arg) {
 }
 return ret;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return Phi(Loop,s0,Phi(Region,s0,Phi_ret));", code.print());
     }
 
@@ -353,7 +353,7 @@ while(arg) {
 }
 return ret;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return Phi(Loop,s0,Phi(Region,s0,Phi_ret));", code.print());
     }
 
@@ -370,7 +370,7 @@ while(arg < 10) {
 }
 return ret;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return Phi(Loop,s0,Phi(Region,s0,Phi_ret));", code.print());
     }
 
@@ -398,7 +398,7 @@ if(0) {
 }
 return 0;
    """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return 0;", code.print());
     }
 
@@ -412,7 +412,7 @@ if(0) return 0;
 else return new s0;
 if(new s0.f0) return 0;
     """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return s0;", code.print());
     }
 
@@ -428,7 +428,7 @@ while(0<arg) {
 }
 return 0;
     """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
     }
 
     @Test
@@ -440,7 +440,7 @@ while(v0.f0) {}
 s0 v1 = v0;
 return v1;
     """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return (const)s0;", code.print());
     }
 
@@ -473,7 +473,7 @@ while(0) {}
 }
 return 0;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return 0;", code.print());
     }
 
@@ -484,7 +484,7 @@ int v0=arg==0;
 while(v0) continue;
 return 0;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return 0;", code.print());
     }
 
@@ -498,7 +498,7 @@ return 0;
             a.y = 55; b.y = 66;
             a.x = 33; b.x = 44;
             return before*100 + p.x;
-            """).parse().iter().finalizeIR();
+            """).driver(CodeGen.Phase.FinalizeIR);
         StopNode stop = code._stop;
         assertEquals("1133",Eval2.eval(code,0));
         assertEquals("2244",Eval2.eval(code,1));
@@ -524,7 +524,7 @@ return 0;
             """;
 
     @Test public void testMemoryAcrossNestedLoops() {
-        var code = new CodeGen(NESTED_MEMORY).parse().iter().finalizeIR();
+        var code = new CodeGen(NESTED_MEMORY).driver(CodeGen.Phase.FinalizeIR);
         StopNode stop = code._stop;
         for (int arg=0; arg<7; arg++) {
             assertEquals("S{x="+(5L+arg)+",y="+(7L+arg*(arg+1)-(arg>=2 ? 2 : 0))+
@@ -540,7 +540,7 @@ return 0;
             if (arg) { s.x = 11; s.z = 13; return s; }
             s.y = 17;
             return s;
-            """).parse().iter().finalizeIR();
+            """).driver(CodeGen.Phase.FinalizeIR);
         StopNode stop = code._stop;
         for (int arg=0; arg<2; arg++) {
             assertEquals(arg==0 ? "S{x=3,y=17,z=7}" : "S{x=11,y=5,z=13}",Eval2.eval(code,arg));
@@ -557,7 +557,7 @@ return 0;
             int v;
             if (arg>1) v=p.x; else v=q.x;
             return v;
-            """).parse().iter().finalizeIR();
+            """).driver(CodeGen.Phase.FinalizeIR);
         StopNode stop = code._stop;
         // The one-step safety check stops at the memory aggregate.
         assertEquals(2,countMemoryNodes(stop,LoadNode.class,new BitSet()));
@@ -572,7 +572,7 @@ return 0;
             !S !s = new S;
             if (arg) s.x=arg+1; else s.x=arg+2;
             return s;
-            """).parse().iter().finalizeIR();
+            """).driver(CodeGen.Phase.FinalizeIR);
         StopNode stop = code._stop;
         // Keep each Store on its own branch.
         assertEquals(2,countMemoryNodes(stop,StoreNode.class,new BitSet()));
@@ -591,7 +591,7 @@ return 0;
             if (arg>1) { v=p.x; p.x=41; p.y=5; }
             else       { v=q.x; q.x=42; }
             return v;
-            """).parse().iter().finalizeIR();
+            """).driver(CodeGen.Phase.FinalizeIR);
         StopNode stop = code._stop;
         assertEquals(2,countMemoryNodes(stop,LoadNode.class,new BitSet()));
         assertEquals("-1",Eval2.eval(code,-1));
diff --git a/src/test/java/com/seaofnodes/simple/Chapter11Test.java b/src/test/java/com/seaofnodes/simple/Chapter11Test.java
index 43a780ec..7c5e05f8 100644
--- a/src/test/java/com/seaofnodes/simple/Chapter11Test.java
+++ b/src/test/java/com/seaofnodes/simple/Chapter11Test.java
@@ -13,7 +13,7 @@ public class Chapter11Test {
             s.x = 42;
             while (arg > 0) { s.y = s.y + arg; arg = arg - 1; }
             return s.x;
-            """).parse().iter().finalizeIR();
+            """).driver(CodeGen.Phase.FinalizeIR);
         var stop = code._stop;
         assertEquals("return 42;",stop.toString());
         assertEquals("42",Eval2.eval(code,5));
@@ -32,7 +32,7 @@ public class Chapter11Test {
                 arg = arg - 1;
             }
             return a;
-            """).parse().iter().finalizeIR();
+            """).driver(CodeGen.Phase.FinalizeIR);
         var stop = code._stop;
         int[] phis = {0};
         stop.walk(n -> {
@@ -54,7 +54,7 @@ public class Chapter11Test {
         // it. Keep both the worklist assertion and the final heap check.
         for (int seed : new int[]{0,97,123,456}) {
             var code = new CodeGen(Chapter10Test.NESTED_MEMORY,com.seaofnodes.simple.type.TypeInteger.BOT,seed,false).parse();
-            code.iter().finalizeIR();
+            code.iter().opto().iterPostOpto().finalizeIR();
             assertEquals("S{x=9,y=25,z=17}",Eval2.eval(code,4));
         }
     }
diff --git a/src/test/java/com/seaofnodes/simple/Chapter12Test.java b/src/test/java/com/seaofnodes/simple/Chapter12Test.java
index 4026ea8b..2ef209c5 100644
--- a/src/test/java/com/seaofnodes/simple/Chapter12Test.java
+++ b/src/test/java/com/seaofnodes/simple/Chapter12Test.java
@@ -14,7 +14,7 @@ public class Chapter12Test {
 """
 return 3.14;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return 3.14;", code.print());
         assertEquals("3.14", Eval2.eval(code,  0));
     }
@@ -75,7 +75,7 @@ i0.f = f0;
 f0.i = i0;
 return f0.i.f.i.i;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return 17;", code.print());
     }
 
@@ -87,7 +87,7 @@ struct N { !N? !next; int i; };
 N n = new N;
 return n.next;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return null;", code.print());
     }
 
@@ -100,7 +100,7 @@ struct N { !M !next; int i; };
 N n = new N { next = new M; };
 return n.next;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return (const)M;", code.print());
     }
 
@@ -150,7 +150,7 @@ return n.i;
 struct S{};
 return 0;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return 0;", code.print());
         assertEquals("0", Eval2.eval(code,  0));
     }
@@ -162,7 +162,7 @@ return 0;
 struct S1 { !S2? !s; };
 return new S2;
 """);
-        try { code.parse().iter().finalizeIR(); fail(); }
+        try { code.driver(CodeGen.Phase.FinalizeIR); fail(); }
         catch( Exception e ) { assertEquals("Unknown struct type 'S2'",e.getMessage()); }
     }
 
@@ -174,7 +174,7 @@ struct S1 { !S2? !s; };
 struct S2 { int x; };
 return new S1.s=new S2;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return S2;", code.print());
     }
 
diff --git a/src/test/java/com/seaofnodes/simple/Chapter13Test.java b/src/test/java/com/seaofnodes/simple/Chapter13Test.java
index 6451ad1d..3301fa5e 100644
--- a/src/test/java/com/seaofnodes/simple/Chapter13Test.java
+++ b/src/test/java/com/seaofnodes/simple/Chapter13Test.java
@@ -8,296 +8,6 @@ import static org.junit.Assert.assertEquals;
 
 public class Chapter13Test {
 
-    // A placeholder test used to rapidly rotate through fuzzer produced issues
-    @Test
-    public void testFuzzer() {
-        CodeGen code = new CodeGen(
-"""
-while(---- -arg) {
-    while(-arg) {
-        while(-----arg*---0) {
-                int N=--false==false<--arg;
-                while(N<-4==N) {
-                    N=N+N;
-                }
-            }
-        {
-            int kzEl_r7EYz = (3*----0!=-arg) < (37*--97!=0/arg==arg) <= -(--arg!=0);
-            while(kzEl_r7EYz<---1) {
-                kzEl_r7EYz=kzEl_r7EYz+kzEl_r7EYz*arg>=24;
-                if(7) continue;
-                kzEl_r7EYz=false;
-                if(-kzEl_r7EYz+arg<-3) continue;
-                else {
-                    while(kzEl_r7EYz) continue;
-                    arg=----3;
-                    kzEl_r7EYz=-(-----arg*1>-kzEl_r7EYz);
-                    int v2uF_4ba=9;
-                }
-            }
-        }
-        int pjcp7rv=arg;
-        {
-            int m2ya3=--arg-pjcp7rv;
-            while(m2ya3<-----pjcp7rv>=pjcp7rv+--pjcp7rv!=---pjcp7rv!=-arg<---(-m2ya3)>m2ya3<=-----true>14!=--m2ya3) {
-                m2ya3=m2ya3+-(--0<=false<pjcp7rv/arg<=-true);
-                while((--m2ya3)<--arg<-----arg*false!=arg<pjcp7rv*arg) {
-                    pjcp7rv=-3+-arg;
-                    break;
-                }
-                while(-3) {
-                    while(67+0-61) m2ya3=m2ya3;
-                    if(----pjcp7rv==---(---arg)) pjcp7rv=0!=-23;
-                    else pjcp7rv=----89;
-                    while(m2ya3!=m2ya3<pjcp7rv) m2ya3=1;
-                    while(--arg<=pjcp7rv) pjcp7rv=-32<=-m2ya3+62;
-                }
-                break;
-            }
-        }
-        {
-            int arg=-1<-9!=(-arg>=-pjcp7rv>=arg<=arg);
-            while(arg<-arg) {
-                arg=arg+--arg;
-                {
-                    while((--93)--pjcp7rv*-pjcp7rv+arg) arg=0-(6>=(--(---41/(0))!=--pjcp7rv)>=---2*33);
-                    pjcp7rv=11;
-                    int c=pjcp7rv;
-                    if(--107) break;
-                    else break;
-                }
-            }
-        }
-        pjcp7rv=pjcp7rv;
-        int aR0Wkua=-pjcp7rv==pjcp7rv;
-        {
-            if(-0!=-0) while(-true) break;
-            else {
-                while(aR0Wkua) pjcp7rv=-0/pjcp7rv;
-                pjcp7rv=pjcp7rv;
-            }
-        }
-    }
-    if(-arg) {
-        {
-            int Isdlt0fr91=0!=arg;
-            while(Isdlt0fr91<-Isdlt0fr91==-Isdlt0fr91+true) {
-                Isdlt0fr91=Isdlt0fr91+-1!=true;
-                if(-arg) if(--arg<=Isdlt0fr91) Isdlt0fr91=-Isdlt0fr91;
-                int i=---arg<---arg!=--40;
-                {
-                    int jVX43Ln4Dm=-(6)==-Isdlt0fr91/----0;
-                    while(jVX43Ln4Dm<--(3-3)) {
-                        jVX43Ln4Dm=jVX43Ln4Dm+-0<25;
-                        i=24<--(jVX43Ln4Dm);
-                    }
-                }
-                i=(arg!=----false>=7);
-                int Te=5>-arg;
-                break;
-            }
-        }
-        arg=arg!=--true/arg;
-        {
-            int UX=arg;
-            while(UX<-3*arg) {
-                UX=UX+arg/-1;
-                arg=-3--(-UX- -47<arg==--arg==arg)/arg- -UX>=-arg;
-                if(---12) while(-UX) break;
-                break;
-            }
-        }
-        continue;
-    }
-    if(arg) arg=--0;
-    else if(1) continue;
-    int DtTlhjYq=19==arg;
-    {
-        arg=--DtTlhjYq<=(DtTlhjYq/---DtTlhjYq<=-DtTlhjYq);
-        if(---arg) continue;
-        else {
-                int Zsl=40;
-                while(Zsl<--Zsl--false>((Zsl))==Zsl!=--DtTlhjYq-DtTlhjYq-DtTlhjYq) {
-                    Zsl=Zsl+arg;
-                }
-            }
-        if((arg)) if(-DtTlhjYq) {
-            }
-            else while(((2)==3*arg/DtTlhjYq)<=0==---arg) return false;
-        else {
-                int lwbF=arg>=0;
-                while(lwbF<57) {
-                    lwbF=lwbF+--(-arg+lwbF)>=-2>=arg!=arg;
-                    arg=----0+0;
-                    while(49) break;
-                    if(true) DtTlhjYq=-----arg;
-                    DtTlhjYq=0!=-----(0);
-                }
-            }
-        arg=---arg!=DtTlhjYq/--0;
-        DtTlhjYq=-DtTlhjYq/(--arg<arg);
-        if(32) {
-                int q=-DtTlhjYq;
-                while(q<arg*(0*q)/0) {
-                    q=q+DtTlhjYq;
-                    DtTlhjYq=arg;
-                }
-            }
-        else if(--arg) if(15) break;
-                else arg=0==arg<=-55>DtTlhjYq;
-            else {
-            }
-        DtTlhjYq=-0;
-        {
-            while((0)<-arg) DtTlhjYq=-DtTlhjYq;
-        }
-        if(30/--(arg)>=0) DtTlhjYq=-0>=arg;
-        else {
-            int Y2wcIQJ=--DtTlhjYq*---11;
-            if(arg==arg) {
-                Y2wcIQJ=-----Y2wcIQJ;
-                Y2wcIQJ=Y2wcIQJ<7;
-                if(DtTlhjYq) arg=arg;
-                else break;
-                while(-arg!=-31==(false<=-15>=-DtTlhjYq+--6*-----Y2wcIQJ<=---arg!=-Y2wcIQJ<=---0<-arg*--Y2wcIQJ)) DtTlhjYq=arg!=3;
-            }
-            continue;
-        }
-        arg=DtTlhjYq;
-        arg=--3/(---arg)>=80>=-DtTlhjYq<=DtTlhjYq;
-        arg=51+---(-true)!=arg!=----1==-DtTlhjYq;
-        if(11<=arg) if((arg)+79<32+(-arg)) continue;
-            else if(true==DtTlhjYq) break;
-        break;
-    }
-}
-if(arg!=62==arg) {
-    while(---arg) {
-        {
-            int bhmDacPM=arg/arg;
-            while(bhmDacPM<arg) {
-                bhmDacPM=bhmDacPM+80*((-bhmDacPM)/---bhmDacPM>1)<bhmDacPM-2!=7;
-                arg=-0;
-                arg=bhmDacPM>=-arg+-arg;
-                break;
-            }
-        }
-        int arg=true;
-        arg=arg<=arg;
-        {
-            int KlC=30;
-            while(KlC<-2) {
-                KlC=KlC+-1!=25<=-KlC>KlC>----0;
-                int Ij=arg>=-arg<=---10;
-                {
-                    int LAbgurVa2R=-arg!=Ij;
-                    while(LAbgurVa2R<-true) {
-                        LAbgurVa2R=LAbgurVa2R+Ij;
-                        KlC=-LAbgurVa2R;
-                        Ij=42*(-Ij>true);
-                        while(Ij) arg=KlC;
-                        KlC=-----7>-(--KlC<--7)==-LAbgurVa2R;
-                    }
-                }
-                int a=Ij<=-KlC;
-                if(Ij) {
-                    int r1W=a!=-false;
-                }
-                else {
-                    arg=56>=Ij;
-                    while(54) break;
-                    arg=8>=-(a<--Ij)/a>=-a-KlC;
-                }
-                int Yt_T=KlC;
-                arg=KlC;
-            }
-        }
-        if(----false/--arg/12+-----0) if(-9+-arg) while(arg!=(arg)) arg=--1>=-71-arg!=---(--arg*11+102)/--arg;
-            else if(----arg) continue;
-        if(-arg-arg) {
-            arg=-(-arg)*--(-3)<(-7==-arg----arg);
-            {
-                int arg=arg;
-                while(arg<-0>arg==-arg-(-arg>1+11)) {
-                    arg=arg+6-arg!=--0>---30>=---arg<=arg/(3)+---arg;
-                }
-            }
-            arg=-arg+arg;
-            arg=--47+-arg<1>arg*(-arg==-arg- -0>3);
-            arg=(----arg)!=arg+--59;
-            arg=- -4+arg==-(arg)-arg;
-        }
-        else {
-            while(--true-----true*-25+-18>arg>=-----(-arg)---13) {
-                arg=-0+--true<false;
-                continue;
-            }
-            arg=true<=arg;
-            break;
-        }
-        arg=arg*22<--(0+-arg);
-        {
-            continue;
-        }
-    }
-    arg=1*---((3<=true)==---2);
-    arg=7+-(-1);
-    return arg+--true;
-}
-else {
-    int o3ypEsewxM=-(---arg);
-    int vzXB=(-(---11<=--o3ypEsewxM>=--0))<=-0/-arg;
-    int L=-arg;
-    int B4mHcrf=---vzXB;
-    int oZWGdzZl=-o3ypEsewxM;
-    int K6tQqa1=11;
-    while(0!=--L) {
-            int sdZfTM=vzXB*true+K6tQqa1;
-            while(sdZfTM<false) {
-                sdZfTM=sdZfTM+arg;
-                sdZfTM=oZWGdzZl;
-                K6tQqa1=-K6tQqa1;
-                arg=---K6tQqa1;
-                while((3+-K6tQqa1)<oZWGdzZl) {
-                    if(-----(-1)) sdZfTM=-false;
-                    {}
-                }
-                K6tQqa1=vzXB!=-(B4mHcrf+-7>false);
-                sdZfTM=vzXB;
-            }
-        }
-    L=false;
-    while(31) B4mHcrf=arg;
-    oZWGdzZl=-0<--oZWGdzZl<=--2;
-    if(K6tQqa1>=20<=46) {
-        if(-1+-L) if(oZWGdzZl) {
-                int wmhv=-----0;
-            }
-        int arg=0;
-        o3ypEsewxM=---(oZWGdzZl);
-        return -oZWGdzZl/0;
-    }
-    else if(arg) {
-            int yKk5=B4mHcrf>=4>K6tQqa1<-B4mHcrf/o3ypEsewxM;
-            return -K6tQqa1;
-        }
-        else {
-            if(---0) {
-                {}
-                {}
-            }
-            return o3ypEsewxM;
-        }
-}
-""");
-        code.driver(CodeGen.Phase.TypeCheck);
-        assertEquals("return 9;", code.print());
-        code.driver(CodeGen.Phase.Schedule);
-        // LoopTree connects the nonreturning paths using synthetic Never exits.
-        assertEquals("return Phi(Region,9,Top,Top,Top,Top);", code.print());
-    }
-
-
     @Test
     public void testPrimes() {
         CodeGen code = new CodeGen(
@@ -325,7 +35,7 @@ while( prime <= arg ) {
 }
 return primeCount;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return Phi(Region,0,Phi(Loop,1,Phi(Region,Phi_primeCount,Phi_primeCount,(Phi_primeCount+1))));", code.print());
         assertEquals("0", Eval2.eval(code,  1)); // No primes 1 or below
         assertEquals("1", Eval2.eval(code,  2)); // 2
@@ -347,7 +57,7 @@ i=v.f;
 if (arg) v.f=1;
 return i;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return 2;", code.print());
         assertEquals("2", Eval2.eval(code, 0));
         assertEquals("2", Eval2.eval(code, 1));
@@ -370,7 +80,7 @@ if (arg) {
 }
 return i;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return Phi(Region,.f,0);", code.print());
     }
 
@@ -389,7 +99,7 @@ if (v1) {
 }
 return v0;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return S;", code.print());
     }
 
@@ -407,7 +117,7 @@ if (arg+1) arg= 0;
 while (arg) v.f = 2;
 return i;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return arg;", code.print());
     }
 
@@ -424,7 +134,7 @@ while(1) {
 }
 return v;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return S;", code.print());
     }
 
@@ -439,7 +149,7 @@ while( -arg )
 while(1)
   arg = arg+ptr.v;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return Top;", code.print());
     }
 
@@ -457,7 +167,7 @@ while (arg) {
 }
 return i;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return 0;", code.print());
     }
 
@@ -477,7 +187,7 @@ while(arg) {
 }
 return arg;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return 0;", code.print());
     }
 
@@ -495,7 +205,7 @@ if (arg) {
 }
 return v;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return S;", code.print());
     }
 
@@ -514,7 +224,7 @@ while (arg > 0) {
 }
 return v;
                 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         //assertEquals("return new S;", code.print());
     }
 
@@ -531,7 +241,7 @@ while(0>=0) {
 }
 return 0;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return Top;", code.print());
     }
 
@@ -549,7 +259,7 @@ u32 v0=0;
     return v1;
 }
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return 0;", code.print());
     }
 
diff --git a/src/test/java/com/seaofnodes/simple/Chapter14FloatTest.java b/src/test/java/com/seaofnodes/simple/Chapter14FloatTest.java
index 51397e77..b0cf0a91 100644
--- a/src/test/java/com/seaofnodes/simple/Chapter14FloatTest.java
+++ b/src/test/java/com/seaofnodes/simple/Chapter14FloatTest.java
@@ -55,7 +55,7 @@ public class Chapter14FloatTest {
 """
 return 3.14;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return 3.14;", code.print());
         assertEquals("3.14", Eval2.eval(code,  0));
     }
@@ -66,7 +66,7 @@ return 3.14;
 """
 return 3.14;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return 3.14;", code.print());
         assertEquals("3.14", Eval2.eval(code,  0));
     }
@@ -83,7 +83,7 @@ while( 1 ) {
 }
 return guess;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return Phi(Loop,(flt)arg,(((ToFloat/Phi_guess)+Phi_guess)*0.5f));", code.print());
         assertEquals("3.0", Eval2.eval(code,  9));
         assertEquals("1.414213562373095", Eval2.eval(code,  2));
@@ -96,7 +96,7 @@ return guess;
 flt x = arg;
 return x+1==x;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return ((flt)arg==(ToFloat+1.0f));", code.print());
         assertEquals("0", Eval2.eval(code, 1));
     }
diff --git a/src/test/java/com/seaofnodes/simple/Chapter14Test.java b/src/test/java/com/seaofnodes/simple/Chapter14Test.java
index 95a5ee81..b4a27c04 100644
--- a/src/test/java/com/seaofnodes/simple/Chapter14Test.java
+++ b/src/test/java/com/seaofnodes/simple/Chapter14Test.java
@@ -16,7 +16,7 @@ public class Chapter14Test {
 """
 return 3.14;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return 3.14;", code.print());
         assertEquals("3.14", Eval2.eval(code,  0));
     }
@@ -32,7 +32,7 @@ if( b < 0 ) c = -1;
 if( b > 2 ) c =  1;
 return c;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return 99;", code.print());
         assertEquals("99", Eval2.eval(code,  0));
     }
@@ -45,7 +45,7 @@ u8 b = 123;
 b = b + 456;// Truncate
 return b;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return 67;", code.print());
         assertEquals("67", Eval2.eval(code,  0));
     }
@@ -59,7 +59,7 @@ u8 b = 123;
 while( b ) b = b + 456;// Truncate
 return b;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return 0;", code.print());
     }
 
@@ -72,7 +72,7 @@ b = b + 456;// Truncate
 u1 c = b;   // No more truncate needed
 return c;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return 1;", code.print());
         assertEquals("1", Eval2.eval(code,  0));
     }
@@ -85,7 +85,7 @@ int b = 123;
 b = b+456 & 31;                 // Precedence
 return b;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return 3;", code.print());
         assertEquals("3", Eval2.eval(code,  0));
     }
@@ -99,7 +99,7 @@ struct Foo { u1 b; };
 f.b = 123;
 return f.b;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return 1;", code.print());
         assertEquals("1", Eval2.eval(code,  0));
     }
@@ -111,7 +111,7 @@ return f.b;
 i8 b = 255;                     // Chopped
 return b;                       // Sign extend
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return -1;", code.print());
         assertEquals("-1", Eval2.eval(code,  0));
     }
@@ -124,7 +124,7 @@ i8 b = arg;
 b = b + 1;// Truncate
 return b;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return (((((arg<<56)>>56)+1)<<56)>>56);", code.print());
         assertEquals("1", Eval2.eval(code, 0));
         assertEquals("-128", Eval2.eval(code, 127));
@@ -138,7 +138,7 @@ u16 mask = (1<<16)-1;           // AND mask
 int c = 123456789 & mask;
 return c;                       //
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return 52501;", code.print());
         assertEquals("52501", Eval2.eval(code,  0));
     }
@@ -149,7 +149,7 @@ return c;                       //
 """
 return (arg | 123 ^ 456) >>> 1;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return (((arg|123)^456)>>>1);", code.print());
         assertEquals("217", Eval2.eval(code,  0));
     }
@@ -175,7 +175,7 @@ while(arg) v1=-v0;
 while(v1) break;
 return v1;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return Phi(Loop,(((1<<arg)&1)&Shl),0);", code.print());
         assertEquals("1", Eval2.eval(code,  0));
     }
@@ -194,7 +194,7 @@ if(0&0>>>0) {
 }
 return v0;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return 0;", code.print());
         assertEquals("0", Eval2.eval(code,  0));
     }
@@ -220,7 +220,7 @@ f32 ff32 = 3.141592653589793;  if( ff32 != 3.1415927410125732) return 5;
 
 return 0;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return 0;", code.print());
         assertEquals("0", Eval2.eval(code,  0));
     }
diff --git a/src/test/java/com/seaofnodes/simple/Chapter15Test.java b/src/test/java/com/seaofnodes/simple/Chapter15Test.java
index a74a1113..9aaafc28 100644
--- a/src/test/java/com/seaofnodes/simple/Chapter15Test.java
+++ b/src/test/java/com/seaofnodes/simple/Chapter15Test.java
@@ -75,7 +75,7 @@ public class Chapter15Test {
 """
 return 3.14;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return 3.14;", code.print());
         assertEquals("3.14", Eval2.eval(code,  0));
     }
@@ -89,7 +89,7 @@ struct C { !C? !l; };
 c.l = c;
 return c;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return C;", code.print());
         assertEquals("C{l=$cyclic}", Eval2.eval(code,  0));
     }
@@ -108,7 +108,7 @@ while (i < old#) {
 output[i] = 1;
 return output;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return []u8;", code.print());
         assertEquals("\u0001", Eval2.eval(code,  0));
     }
@@ -120,7 +120,7 @@ return output;
 int[] is = new int[2];
 return is[1];
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return 0;", code.print());
         assertEquals("0", Eval2.eval(code,  0));
     }
@@ -133,7 +133,7 @@ int[] is = new int[2];
 int[] is2 = new int[2];
 return is[1];
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return 0;", code.print());
         assertEquals("0", Eval2.eval(code,  0));
     }
@@ -147,7 +147,7 @@ a[0] = 1;
 a[1] = 2;
 return a[0];
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return 1;", code.print());
         assertEquals("1", Eval2.eval(code,  0));
     }
@@ -160,7 +160,7 @@ struct A { int i; };
 !A?[] !a = new !A?[2];
 return a;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return []*A?;", code.print());
         assertEquals("*A {i64 !i; }?[ null,null]", Eval2.eval(code, 0));
     }
@@ -189,7 +189,7 @@ else {
 }
 return rez;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return Phi(Region,1.2,.y,2.3);", code.print());
         assertEquals("3.14", Eval2.eval(code, 0));
         assertEquals("1.2", Eval2.eval(code, 1));
@@ -232,7 +232,7 @@ root._kids = new !Tree?[2]; // NO BANG SO ARRAY IS OF IMMUTABLE TREES????
 root._kids[0] = new Tree;
 return root;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return Tree;", code.print());
         assertEquals("Tree{_kids=*Tree {*[]*Tree?? !_kids; }?[ Tree{_kids=null},null]}", Eval2.eval(code,  0));
     }
@@ -244,7 +244,7 @@ return root;
 struct S { int a; int[] !b; };
 return 0;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return 0;", code.print());
     }
 
@@ -267,7 +267,7 @@ while( i < ary# - 1 ) {
 }
 return ary[1] * 1000 + ary[3]; // 1 * 1000 + 6
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return (.[]+(.[]*1000));", code.print());
         assertEquals("1006", Eval2.eval(code,  4));
     }
@@ -276,7 +276,7 @@ return ary[1] * 1000 + ary[3]; // 1 * 1000 + 6
     public void sieveOEratosthenes() throws IOException {
         String src = Files.readString(Path.of("src/test/java/com/seaofnodes/simple/progs/sieve.smp"));
         CodeGen code = new CodeGen(src+"return sieve(arg);");
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return []u32;", code.print());
         assertEquals("u32[ 2,3,5,7,11,13,17,19]",Eval2.eval(code, 20));
     }
@@ -293,7 +293,7 @@ s2.f = 2.0;
 if (arg) s1 = new S;
 return s1.i + s1.f;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return ((flt).i+.f);", code.print());
         assertEquals("0.0", Eval2.eval(code,  0));
     }
@@ -305,7 +305,7 @@ return s1.i + s1.f;
 """
 return new flt;
 """);
-        try { code.parse().iter().finalizeIR(); fail(); }
+        try { code.driver(CodeGen.Phase.FinalizeIR); fail(); }
         catch( Exception e ) { assertEquals("Cannot allocate a flt",e.getMessage()); }
     }
 
@@ -327,7 +327,7 @@ return is;
 int[] is = new int[3.14];
 return is[1];
 """);
-        try { code.parse().iter().finalizeIR(); fail(); }
+        try { code.driver(CodeGen.Phase.FinalizeIR); fail(); }
         catch( Exception e ) { assertEquals("Cannot allocate an array with length 3.14",e.getMessage()); }
     }
 
@@ -337,7 +337,7 @@ return is[1];
 int[] is = new int[arg];
 return is[1];
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return 0;", code.print());
         assertEquals("0", Eval2.eval(code,  4));
         try { Eval2.eval(code,-1); fail(); }
@@ -370,7 +370,7 @@ while(v5+(0&0)) {
 }
 return v1;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return 0;", code.print());
         assertEquals("0", Eval2.eval(code,  0));
     }
@@ -386,7 +386,7 @@ int v8=0;
 while(0<--1>>>---(v7*0==v8)) {}
 return 0;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return 0;", code.print());
     }
 
@@ -411,7 +411,7 @@ else {
 }
 return 0;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return 0;", code.print());
     }
 }
diff --git a/src/test/java/com/seaofnodes/simple/Chapter16Test.java b/src/test/java/com/seaofnodes/simple/Chapter16Test.java
index 67962acd..d066357f 100644
--- a/src/test/java/com/seaofnodes/simple/Chapter16Test.java
+++ b/src/test/java/com/seaofnodes/simple/Chapter16Test.java
@@ -15,7 +15,7 @@ public class Chapter16Test {
 """
 return 3.14;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return 3.14;", code.print());
         assertEquals("3.14", Eval2.eval(code,  0));
     }
@@ -28,7 +28,7 @@ return 3.14;
 int x, y;
 return x+y;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return 0;", code.print());
         assertEquals("0", Eval2.eval(code,  0));
     }
@@ -39,7 +39,7 @@ return x+y;
 int x=2, y=x+1;
 return x+y;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return 5;", code.print());
         assertEquals("5", Eval2.eval(code,  0));
     }
@@ -52,7 +52,7 @@ struct X { int x=3; };
 X z = new X;
 return z.x;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return 3;", code.print());
         assertEquals("3", Eval2.eval(code,  0));
     }
@@ -64,7 +64,7 @@ struct X { int x=3; };
 X z = new X { x = 4; };
 return z.x;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return 4;", code.print());
         assertEquals("4", Eval2.eval(code,  0));
     }
@@ -85,7 +85,7 @@ LLI? next = head.next;
 if( !next ) return 1;
 return next.i;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return Phi(Region,0,1,.i);", code.print());
         assertEquals("0", Eval2.eval(code,  0));
         assertEquals("1", Eval2.eval(code,  1));
@@ -116,7 +116,7 @@ LLI? next = head.next;
 if( !next ) return 1;
 return next.i;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return Phi(Region,0,1,.i);", code.print());
         assertEquals("0", Eval2.eval(code,  0));
         assertEquals("1", Eval2.eval(code,  1));
@@ -141,7 +141,7 @@ struct Square {
 };
 return new Square;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return Square;", code.print());
         assertEquals("Square{side=3.0,diag=1.7320508075688772}", Eval2.eval(code,  3));
         assertEquals("Square{side=4.0,diag=2.0}", Eval2.eval(code, 4));
@@ -165,7 +165,7 @@ return new Square;
         """;
 
     @Test public void testConstructorMemory() {
-        var code = new CodeGen(CONSTRUCTOR_MEMORY).parse().iter().finalizeIR();
+        var code = new CodeGen(CONSTRUCTOR_MEMORY).driver(CodeGen.Phase.FinalizeIR);
         assertEquals("111249",Eval2.eval(code,0));
         assertEquals("222352",Eval2.eval(code,1));
     }
diff --git a/src/test/java/com/seaofnodes/simple/Chapter17aTest.java b/src/test/java/com/seaofnodes/simple/Chapter17aTest.java
index ba5bb985..d03248c2 100644
--- a/src/test/java/com/seaofnodes/simple/Chapter17aTest.java
+++ b/src/test/java/com/seaofnodes/simple/Chapter17aTest.java
@@ -15,7 +15,7 @@ int x=2, y=3;
 if( arg ) { int x = y; x = x*x; y=x; } // Shadow final x
 return y;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return Phi(Region,9,3);", code.print());
         assertEquals("3", Eval2.eval(code, 0));
         assertEquals("9", Eval2.eval(code, 1));
@@ -28,7 +28,7 @@ struct X { int ~x; };
 X z = new X { x=3; };
 return z.x;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return 3;", code.print());
         assertEquals("3", Eval2.eval(code,  0));
     }
@@ -40,7 +40,7 @@ struct Point { int ~x, ~y; };
 Point p = new Point { x=3; y=4; };
 return p;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return (const)Point;", code.print());
         assertEquals("Point{x=3,y=4}", Eval2.eval(code,  0));
     }
@@ -73,7 +73,7 @@ return p;
     public void testStructFinal3() {
         for( String fields : new String[] { "var x; var y;", "int[] !x;", "int[] !x;" } ) {
             String src = "struct Point { "+fields+" }; Point p = new Point; p.x++; return p;";
-            try { new CodeGen(src).parse().iter().finalizeIR(); fail(fields); }
+            try { new CodeGen(src).driver(CodeGen.Phase.FinalizeIR); fail(fields); }
             catch( Exception e ) { assertEquals("'Point' is not fully initialized, field 'x' needs to be set in a constructor",e.getMessage()); }
         }
     }
@@ -98,7 +98,7 @@ struct Point { var x=3; var y=4; };
 p.x++;
 return p;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return Point;", code.print());
         assertEquals("Point{x=4,y=4}", Eval2.eval(code,  0));
     }
diff --git a/src/test/java/com/seaofnodes/simple/Chapter17bTest.java b/src/test/java/com/seaofnodes/simple/Chapter17bTest.java
index 862c9cf7..d2fa40f3 100644
--- a/src/test/java/com/seaofnodes/simple/Chapter17bTest.java
+++ b/src/test/java/com/seaofnodes/simple/Chapter17bTest.java
@@ -52,7 +52,7 @@ return 1;
         CodeGen code = new CodeGen("""
 return arg++;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return arg;", code.print());
         assertEquals("0", Eval2.eval(code, 0));
     }
@@ -62,7 +62,7 @@ return arg++;
         CodeGen code = new CodeGen("""
 return arg+++arg++;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return ((arg<<1)+1);", code.print());
         assertEquals("1", Eval2.eval(code, 0));
     }
@@ -73,7 +73,7 @@ return arg+++arg++;
 //   -(arg--)-(arg--)
 return -arg---arg--;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return (-((arg<<1)+-1));", code.print());
         assertEquals("1", Eval2.eval(code, 0));
     }
@@ -86,7 +86,7 @@ xs[0]++;
 xs[1]++;
 return xs[0];
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return 1;", code.print());
         assertEquals("1", Eval2.eval(code, 2));
     }
@@ -98,7 +98,7 @@ u8[] !xs = new u8[1];
 xs[0]--;
 return xs[0];
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return 255;", code.print());
         assertEquals("255", Eval2.eval(code, 2));
     }
@@ -111,7 +111,7 @@ struct S { u16 x; };
 s.x--;
 return s.x;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return 65535;", code.print());
         assertEquals("65535", Eval2.eval(code, 2));
     }
@@ -119,7 +119,7 @@ return s.x;
     @Test
     public void testInc6() {
         CodeGen code = new CodeGen("return --arg;");
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return (arg+-1);", code.print());
         assertEquals("-1", Eval2.eval(code, 0));
     }
@@ -127,7 +127,7 @@ return s.x;
     @Test
     public void testInc7() {
         CodeGen code = new CodeGen("u8 x=0; return --x;");
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return 255;", code.print());
         assertEquals("255", Eval2.eval(code, 0));
     }
@@ -135,7 +135,7 @@ return s.x;
     @Test
     public void testInc8() {
         CodeGen code = new CodeGen("int x; x+=2; return x+=3;");
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return 5;", code.print());
         assertEquals("5", Eval2.eval(code, 0));
     }
@@ -143,7 +143,7 @@ return s.x;
     @Test
     public void testInc9() {
         CodeGen code = new CodeGen("flt x = 1.5; x++; return x;");
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return 2.5f;", code.print());
         assertEquals("2.5", Eval2.eval(code, 0));
     }
@@ -158,40 +158,40 @@ return s.x;
     // ---------------------------------------------------------------
     @Test public void testVar0() {
         CodeGen code = new CodeGen("var d; return d;");
-        try { code.parse().iter().finalizeIR(); fail(); }
+        try { code.driver(CodeGen.Phase.FinalizeIR); fail(); }
         catch( Exception e ) { assertEquals("Syntax error, expected =expression: ;",e.getMessage()); }
     }
 
     @Test public void testVar1() {
         CodeGen code = new CodeGen("val d; return d;");
-        try { code.parse().iter().finalizeIR(); fail(); }
+        try { code.driver(CodeGen.Phase.FinalizeIR); fail(); }
         catch( Exception e ) { assertEquals("Syntax error, expected =expression: ;",e.getMessage()); }
     }
 
     @Test public void testVar2() {
         CodeGen code = new CodeGen("int x; x=3; x++; return x; // Ok, no initializer so x is mutable ");
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return 4;", code.print());
         assertEquals("4", Eval2.eval(code, 0));
     }
 
     @Test public void testVar3() {
         CodeGen code = new CodeGen("int x=3; x++; return x; // Ok, primitive so x is mutable despite initializer ");
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return 4;", code.print());
         assertEquals("4", Eval2.eval(code, 0));
     }
 
     @Test public void testVar4() {
         CodeGen code = new CodeGen("struct S{int x;}; !S? !s; s=new S; s.x++; return s.x; // Ok, no initializer so x is mutable ");
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return 1;", code.print());
         assertEquals("1", Eval2.eval(code, 0));
     }
 
     @Test public void testVar5() {
         CodeGen code = new CodeGen("struct S{int x;}; !S? !s; s=new S{x=3;}; s.x++; return s.x; // Ok, no initializer so x is mutable ");
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return 4;", code.print());
         assertEquals("4", Eval2.eval(code, 0));
     }
@@ -210,14 +210,14 @@ return s.x;
 
     @Test public void testVar8() {
         CodeGen code = new CodeGen("struct S{int x;}; !S !s=new S; s.x++; return s.x; // Ok, has '!' so s.x is mutable ");
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return 1;", code.print());
         assertEquals("1", Eval2.eval(code, 0));
     }
 
     @Test public void testVar9() {
         CodeGen code = new CodeGen("struct S{int x;}; var s=new S; s.x++; return s.x; // Ok, has var so s.x is mutable ");
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return 1;", code.print());
         assertEquals("1", Eval2.eval(code, 0));
     }
@@ -264,7 +264,7 @@ foo.bar.x++;           // Bumps to 5
 int x5 = xfoo.bar.x;   // Ok to read through xfoo, gets 5
 return x4*10+x5;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return 45;", code.print());
         assertEquals("45", Eval2.eval(code, 0));
     }
@@ -289,7 +289,7 @@ A x = new A {
     b = new B;
 };
 """);
-        try { code.parse().iter().finalizeIR(); fail(); }
+        try { code.driver(CodeGen.Phase.FinalizeIR); fail(); }
         catch( Exception e ) { assertEquals("Cannot read uninitialized field 'b'",e.getMessage()); }
     }
 
@@ -345,7 +345,7 @@ return me;
         CodeGen code = new CodeGen("""
 return arg ? 1 : 2;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return Phi(Region,1,2);", code.print());
         assertEquals("2", Eval2.eval(code, 0));
         assertEquals("1", Eval2.eval(code, 1));
@@ -356,7 +356,7 @@ return arg ? 1 : 2;
         CodeGen code = new CodeGen("""
 return arg ? 0 : arg;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return 0;", code.print());
         assertEquals("0", Eval2.eval(code, 0));
     }
@@ -368,7 +368,7 @@ struct Bar { int x; };
 var b = arg ? new Bar : null;
 return b ? b.x++ + b.x++ : -1;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return Phi(Region,((.x<<1)+1),-1);", code.print());
         assertEquals("-1", Eval2.eval(code, 0));
         assertEquals("1", Eval2.eval(code, 1));
@@ -381,7 +381,7 @@ struct Bar { int x; };
 var b = arg ? new Bar;
 return b ? b.x++ + b.x++ : -1;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return Phi(Region,((.x<<1)+1),-1);", code.print());
         assertEquals("-1", Eval2.eval(code, 0));
         assertEquals("1", Eval2.eval(code, 1));
@@ -395,7 +395,7 @@ struct Bar { !Bar? !next; int x; };
 var b = arg ? new Bar { next = (arg==2) ? new Bar{x=2;}; x=1; };
 return b ? b.next ? b.next.x : b.x; // parses "b ? (b.next ? b.next.x : b.x) : 0"
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return Phi(Region,.x,0,.x);", code.print());
         assertEquals("0", Eval2.eval(code, 0));
         assertEquals("1", Eval2.eval(code, 1));
@@ -408,7 +408,7 @@ return b ? b.next ? b.next.x : b.x; // parses "b ? (b.next ? b.next.x : b.x) : 0
 flt f=arg?1:1.2;
 return f;   // missing widening
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return Phi(Region,1.0f,1.2);", code.print());
         assertEquals("1.2", Eval2.eval(code,  0));
     }
@@ -433,7 +433,7 @@ for( int i=0; i<arg; i++ )
     sum += i;
 return sum;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return Phi(Loop,0,(Phi_sum+Phi(Loop,0,(Phi_i+1))));", code.print());
         assertEquals("3", Eval2.eval(code, 3));
         assertEquals("45", Eval2.eval(code, 10));
@@ -446,7 +446,7 @@ for( ; i<arg; i++ )
     sum += i;
 return sum;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return Phi(Loop,0,(Phi_sum+Phi(Loop,0,(Phi_i+1))));", code.print());
         assertEquals("3", Eval2.eval(code, 3));
         assertEquals("45", Eval2.eval(code, 10));
@@ -461,7 +461,7 @@ for( int i=0; ; i++ ) {
 }
 return sum;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return Phi(Loop,0,(Phi_sum+Phi(Loop,0,(Phi_i+1))));", code.print());
         assertEquals("3", Eval2.eval(code, 3));
         assertEquals("45", Eval2.eval(code, 10));
@@ -474,7 +474,7 @@ for( int i=0; i<arg; )
     sum += i++;
 return sum;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return Phi(Loop,0,(Phi_sum+Phi(Loop,0,(Phi_i+1))));", code.print());
         assertEquals("3", Eval2.eval(code, 3));
         assertEquals("45", Eval2.eval(code, 10));
@@ -487,7 +487,7 @@ for( int i=0; i<arg; i++ )
     sum += i;
 return i;
 """);
-        try { code.parse().iter().finalizeIR(); fail(); }
+        try { code.driver(CodeGen.Phase.FinalizeIR); fail(); }
         catch( Exception e ) { assertEquals("Undefined name 'i'",e.getMessage()); }
     }
     @Test
@@ -495,7 +495,7 @@ return i;
         CodeGen code = new CodeGen("""
 for(;;arg++;) {}
 """);
-        try { code.parse().iter().finalizeIR(); fail(); }
+        try { code.driver(CodeGen.Phase.FinalizeIR); fail(); }
         catch( Exception e ) { assertEquals("Syntax error, expected Unexpected code after expression: ;",e.getMessage()); }
     }
 
@@ -511,7 +511,7 @@ struct A{
 };
 return new A;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return A;", code.print());
         assertEquals("A{f1=null,f2=null}", Eval2.eval(code,0));
     }
@@ -525,7 +525,7 @@ struct A {
 };
 return new A{array_of_b = new !B?[0]; }.array_of_b;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return []*B?;", code.print());
         assertEquals("*B {... }?[]", Eval2.eval(code,0));
     }
@@ -544,7 +544,7 @@ for( ; ptr; ptr = ptr.next )
     sum += ptr.i;
 return sum;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return Phi(Loop,0,(Phi_sum+.i));", code.print());
         assertEquals("45", Eval2.eval(code, 10));
     }
diff --git a/src/test/java/com/seaofnodes/simple/Chapter18Test.java b/src/test/java/com/seaofnodes/simple/Chapter18Test.java
index 11bdfb9a..e26edb7e 100644
--- a/src/test/java/com/seaofnodes/simple/Chapter18Test.java
+++ b/src/test/java/com/seaofnodes/simple/Chapter18Test.java
@@ -157,7 +157,7 @@ return a;
 {int -> int}? x2 = null; // null function ptr
 return x2;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return null;", code._stop.toString());
         assertEquals("null", Eval2.eval(code, 0 ) );
     }
@@ -170,7 +170,7 @@ return x2;
     x*x;
 };
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return (Parm_x(sq,i64)*x);", code._stop.toString());
         //assertEquals("{ int -> int #1}", Eval2.eval(code, 3));
     }
@@ -197,7 +197,7 @@ return sq(arg)+sq(3);
 int cnt=1;
 return { -> cnt; };
 """);
-        try { code.parse().iter().finalizeIR(); fail(); }
+        try { code.driver(CodeGen.Phase.FinalizeIR); fail(); }
         catch( Exception e ) { assertEquals("Variable 'cnt' is out of function scope and must be a final constant",e.getMessage()); }
     }
 
@@ -209,7 +209,7 @@ return { -> cnt; };
 val cnt=2;
 return { -> cnt; }();
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("return 2;", code._stop.toString());
         assertEquals("2", Eval2.eval(code, 0));
     }
@@ -222,8 +222,8 @@ return { -> cnt; }();
 var fcn = arg ? { int x -> x*x; } : { int x -> x+x; };
 return fcn(3);
 """);
-        code.parse().iter().finalizeIR();
-        assertEquals("Stop[ return #2; return (Parm_x($fun21,i64,3)*x); return (Parm_x($fun22,i64,3)<<1); ]", code._stop.toString());
+        code.driver(CodeGen.Phase.FinalizeIR);
+        assertEquals("Stop[ return #2; return (Parm_x($fun21,i64)*x); return (Parm_x($fun22,i64)<<1); ]", code._stop.toString());
         assertEquals("6", Eval2.eval(code, 0));
         assertEquals("9", Eval2.eval(code, 1));
     }
@@ -233,7 +233,7 @@ return fcn(3);
     public void testFcn5() {
         CodeGen code = new CodeGen("val fact = { int x -> x <= 1 ? 1 : x*fact(x-1); }; return fact(arg);");
         code.driver(CodeGen.Phase.TypeCheck);
-        assertEquals("Stop[ return #2; return Phi(Region,1,(Parm_x(fact,i64,arg,(x-1))*#2)); ]", code._stop.toString());
+        assertEquals("Stop[ return #2; return Phi(Region,1,(Parm_x(fact,i64)*#2)); ]", code._stop.toString());
         assertEquals( "1", Eval2.eval(code, 0));
         assertEquals( "1", Eval2.eval(code, 1));
         assertEquals( "2", Eval2.eval(code, 2));
@@ -249,7 +249,7 @@ struct S { int i; };
 val newS = { int x -> return new S { i=x; }; };
 return newS(1).i;
 """);
-        code.driver(CodeGen.Phase.Schedule);
+        code.driver(CodeGen.Phase.TypeCheck);
         assertEquals("return 1;", code._stop.toString());
         assertEquals("1", Eval2.eval(code,  0));
     }
@@ -264,8 +264,8 @@ val f = {->1;};
 val g = {->2;};
 return 2;
 """);
-        code.driver(CodeGen.Phase.Schedule);
-        assertEquals("Stop[ return 1; return 1; return 2; ]", code._stop.toString());
+        code.driver(CodeGen.Phase.TypeCheck);
+        assertEquals("return 1;", code._stop.toString());
         assertEquals("1", Eval2.eval(code,  0));
     }
 
@@ -342,7 +342,7 @@ for(;;) {
 }
 return 1;
 """);
-        try { code.parse().iter().finalizeIR(); fail(); }
+        try { code.driver(CodeGen.Phase.FinalizeIR); fail(); }
         catch( Exception e ) { assertEquals("No active loop for a break or continue",e.getMessage()); }
     }
 
@@ -399,7 +399,7 @@ for(;;) {
 val g = { ->
     g();
 };
-return 0;
+return g();
 """);
         try { code.driver(CodeGen.Phase.TypeCheck); fail(); }
         catch( Exception e ) { assertEquals("No defined return type",e.getMessage()); }
@@ -415,7 +415,7 @@ val is_even = { int x -> x ? is_odd (x-1) : true ; };
 val is_odd  = { int x -> x ? is_even(x-1) : false; };
 return is_even(arg);
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         assertEquals("Stop[ return is_even( arg); return Phi(Region,Phi(Region,is_even( ((Parm_x(is_even,int,arg,Sub)-1)-1)),0),1); ]", code._stop.toString());
         assertEquals("1", Eval2.eval(code, 0));
         assertEquals("0", Eval2.eval(code, 1));
@@ -489,7 +489,7 @@ return p.coffee_count;
         """;
 
     @Test public void testCallMemory() {
-        var code = new CodeGen(CALL_MEMORY).parse().iter().finalizeIR();
+        var code = new CodeGen(CALL_MEMORY).driver(CodeGen.Phase.FinalizeIR);
         int[] calls={0};
         code._stop.walk(n -> { if(n instanceof CallNode) calls[0]++; return null; });
         assertEquals(2,calls[0]); // Keep real calls so this checks scheduling across them.
@@ -518,7 +518,7 @@ return p.coffee_count;
         """;
 
     @Test public void testRecursiveMemory() {
-        var code = new CodeGen(RECURSIVE_MEMORY).parse().iter().finalizeIR();
+        var code = new CodeGen(RECURSIVE_MEMORY).driver(CodeGen.Phase.FinalizeIR);
         for(int n=0; n<7; n++)
             assertEquals(Long.toString((10L*(n+1)+n*(n+1)/2)*100+10+n),Eval2.eval(code,n));
     }
@@ -536,7 +536,7 @@ return p.coffee_count;
         """;
 
     @Test public void testInlineAllocationMemory() {
-        var code = new CodeGen(INLINE_MEMORY).parse().iter().finalizeIR();
+        var code = new CodeGen(INLINE_MEMORY).driver(CodeGen.Phase.FinalizeIR);
         assertNull(code._stop.walk(n -> n instanceof CallNode ? n : null));
         assertEquals("400944",Eval2.eval(code,0));
         assertEquals("420946",Eval2.eval(code,2));
diff --git a/src/test/java/com/seaofnodes/simple/Chapter19Test.java b/src/test/java/com/seaofnodes/simple/Chapter19Test.java
index 70fd3ade..303cfda2 100644
--- a/src/test/java/com/seaofnodes/simple/Chapter19Test.java
+++ b/src/test/java/com/seaofnodes/simple/Chapter19Test.java
@@ -27,7 +27,7 @@ public class Chapter19Test {
         fun.addDef(code._start);
         code.link(fun);
         var otherReturn = tfp.makeFrom(TypeInteger.constant(654321));
-        org.junit.Assert.assertSame(fun,code.link(otherReturn));
+        org.junit.Assert.assertSame(fun,code._link(otherReturn));
         org.junit.Assert.assertTrue(con.toString().contains("printerTarget"));
         assertEquals("printerTarget",call.name());
     }
@@ -47,7 +47,38 @@ return 0;
 
     @Test
     public void testString() throws IOException {
-        String src = Files.readString(Path.of("src/test/java/com/seaofnodes/simple/progs/stringHash.smp"));
+        String src =
+"""
+struct String {
+    u8[] !cs;
+    int _hashCode;
+};
+
+// Compare two Strings
+val equals = { !String !self, !String s ->
+    if( self == s ) return true;
+    if( self.cs# != s.cs# ) return false;
+    for( int i=0; i< self.cs#; i++ )
+        if( self.cs[i] != s.cs[i] )
+            return false;
+    return true;
+};
+
+// Return the String hashCode (cached, and never 0)
+val hashCode = { !String self ->
+    self._hashCode
+    ?  self._hashCode
+    : (self._hashCode = _hashCodeString(self));
+};
+
+val _hashCodeString = { !String self ->
+    int hash=0;
+    for( int i=0; i< self.cs#; i++ )
+        hash = hash*31 + self.cs[i];
+    if( !hash ) hash = 123456789;
+    return hash;
+};
+""";
         CodeGen code = new CodeGen(src).driver(CodeGen.Phase.LocalSched);
         assertEquals("Stop[ return Phi(Region,1,0,0,1); return Phi(Region,._hashCode,Phi(Region,123456789,Phi(Loop,0,(.[]+((Phi_hash<<5)-Phi_hash))))); ]", code._stop.toString());
         //assertEquals("-4898613127354160978", Eval2.eval(code,  2));
@@ -316,8 +347,20 @@ return A[1];
 
     @Test
     public void testNewton() throws IOException {
-        String src = Files.readString(Path.of("src/test/java/com/seaofnodes/simple/progs/newtonFloat.smp"))
-            + "flt farg = arg;  return test_sqrt(farg);";
+        String src =
+"""
+val test_sqrt = { flt x ->
+    flt epsilon = 1e-15;
+    flt guess = x;
+    while( 1 ) {
+        flt next = (x/guess + guess)/2;
+        if( guess-epsilon <= next & next <= guess+epsilon ) return guess;
+        //if( guess==next ) return guess;
+        guess = next;
+    }
+};
+flt farg = arg;  return test_sqrt(farg);
+""";
         CodeGen code = new CodeGen(src).driver(Phase.LocalSched,"x86_64_v2", "SystemV");
         assertEquals("return Phi(Loop,(cvtf,arg),(mulf,(addf,(divf,cvtf,Phi_guess),Phi_guess),0.5f));", code.print());
     };
@@ -325,7 +368,39 @@ return A[1];
 
     @Test
     public void sieveOfEratosthenes() throws IOException {
-        String src = Files.readString(Path.of("src/test/java/com/seaofnodes/simple/progs/sieve.smp"));
+        String src =
+"""
+val sieve = { int N ->
+    // The main Sieve array
+    bool[] !ary = new bool[N];
+    // The primes less than N
+    u32[] !primes = new u32[N>>1];
+    // Number of primes so far, searching at index p
+    int nprimes = 0, p=2;
+    // Find primes while p^2 < N
+    while( p*p < N ) {
+        // skip marked non-primes
+        while( ary[p] ) p++;
+        // p is now a prime
+        primes[nprimes++] = p;
+        // Mark out the rest non-primes
+        for( int i = p + p; i < ary#; i+= p )
+            ary[i] = true;
+        p++;
+    }
+
+    // Now just collect the remaining primes, no more marking
+    for( ; p < N; p++ )
+        if( !ary[p] )
+            primes[nprimes++] = p;
+
+    // Copy/shrink the result array
+    u32[] !rez = new u32[nprimes];
+    for( int j=0; j < nprimes; j++ )
+        rez[j] = primes[j];
+    return rez;
+};
+""";
         CodeGen code = new CodeGen(src).driver(Phase.LocalSched,"x86_64_v2", "SystemV");
         assertEquals("return []u32;", code.print());
         //assertEquals("u32[ 2,3,5,7,11,13,17,19]",Eval2.eval(code, 20));
diff --git a/src/test/java/com/seaofnodes/simple/Chapter20Test.java b/src/test/java/com/seaofnodes/simple/Chapter20Test.java
index cf2b175d..ba93a440 100644
--- a/src/test/java/com/seaofnodes/simple/Chapter20Test.java
+++ b/src/test/java/com/seaofnodes/simple/Chapter20Test.java
@@ -243,8 +243,8 @@ s.cs[1] = 108; // l
 hashCode(s);
 """;
         testTarget(src,"x86_64_v2", "SystemV",9,null);
-        testTarget(src,"riscv"    , "SystemV",4,null);
-        testTarget(src,"arm"      , "SystemV",1,null);
+        testTarget(src,"riscv"    , "SystemV",3,null);
+        testTarget(src,"arm"      , "SystemV",0,null);
     }
 
     @Test
diff --git a/src/test/java/com/seaofnodes/simple/Chapter21Test.java b/src/test/java/com/seaofnodes/simple/Chapter21Test.java
index f25a881a..1bf65cfd 100644
--- a/src/test/java/com/seaofnodes/simple/Chapter21Test.java
+++ b/src/test/java/com/seaofnodes/simple/Chapter21Test.java
@@ -29,7 +29,7 @@ public class Chapter21Test {
                 else if(i==4) b.x=40;
             }
             return sum;
-            """).parse().iter().finalizeIR();
+            """).driver(CodeGen.Phase.FinalizeIR);
         // The i==2 read still sees 10: three reads of 10, then three of 30.
         assertEquals("120",Eval2.eval(code,0));
         assertEquals("60",Eval2.eval(code,1));
@@ -309,7 +309,7 @@ public class Chapter21Test {
     }
 
 
-    // Enabled in Chapter 23; measured there by Chapter23AllocTest.
+    // Frozen Jig runs in Chapter23AllocTest; the revised input is in Chapter24AllocTest.
     @Test @Ignore
     public void testJig() throws IOException {
         String src = Files.readString(Path.of("src/test/java/com/seaofnodes/simple/progs/jig.smp"));
@@ -343,7 +343,17 @@ public class Chapter21Test {
 
     @Test
     public void testArray1() throws IOException {
-        String src = Files.readString(Path.of("src/test/java/com/seaofnodes/simple/progs/array1.smp"));
+        String src =
+"""
+int[] !ary = new int[arg];
+// Fill [0,1,2,3,4,...]
+for( int i=0; i<ary#; i++ )
+    ary[i] = i;
+// Fill [0,1,3,6,10,...]
+for( int i=0; i<ary#-1; i++ )
+    ary[i+1] += ary[i];
+return ary[1] * 1000 + ary[3]; // 1 * 1000 + 6
+""";
         testCPU(src,"x86_64_v2", "SystemV",-1,"return .[];");
         testCPU(src,"riscv"    , "SystemV", 7,"return (add,.[],(mul,.[],1000));");
         testCPU(src,"arm"      , "SystemV", 5,"return (add,.[],(mul,.[],1000));");
@@ -351,7 +361,19 @@ public class Chapter21Test {
 
     @Test
     public void testAntiDeps1() throws IOException {
-        String src = Files.readString(Path.of("src/test/java/com/seaofnodes/simple/progs/antiDep1.smp"));
+        String src =
+"""
+struct S { int f; };
+var v0 = new S;
+!S? !v1;
+if (arg) v1 = new S;
+if (v1) {
+    v0.f = v1.f;
+} else {
+    v0.f = 2;
+}
+return v0;
+""";
         testCPU(src,"x86_64_v2", "SystemV", 7,"return mov(mov(S));");
         testCPU(src,"riscv"    , "SystemV",10,"return mov(mov(S));");
         testCPU(src,"arm"      , "SystemV",10,"return mov(mov(S));");
@@ -359,18 +381,92 @@ public class Chapter21Test {
 
     @Test
     public void testString() throws IOException {
-        String src = Files.readString(Path.of("src/test/java/com/seaofnodes/simple/progs/stringHash.smp"));
+        String src =
+"""
+struct String {
+    u8[] !cs;
+    int _hashCode;
+};
+
+// Compare two Strings
+val equals = { !String !self, !String s ->
+    if( self == s ) return true;
+    if( self.cs# != s.cs# ) return false;
+    for( int i=0; i< self.cs#; i++ )
+        if( self.cs[i] != s.cs[i] )
+            return false;
+    return true;
+};
+
+// Return the String hashCode (cached, and never 0)
+val hashCode = { !String self ->
+    self._hashCode
+    ?  self._hashCode
+    : (self._hashCode = _hashCodeString(self));
+};
+
+val _hashCodeString = { !String self ->
+    int hash=0;
+    for( int i=0; i< self.cs#; i++ )
+        hash = hash*31 + self.cs[i];
+    if( !hash ) hash = 123456789;
+    return hash;
+};
+""";
         testCPU(src,"x86_64_v2", "SystemV", 9,null);
         testCPU(src,"riscv"    , "SystemV", 3,null);
         testCPU(src,"arm"      , "SystemV", 1,null);
     }
 
     @Test public void testStringExport() throws IOException {
-        TestC.run("stringHash", 9);
+        String src =
+"""
+struct String {
+    u8[] !cs;
+    int _hashCode;
+};
+
+// Compare two Strings
+val equals = { !String !self, !String s ->
+    if( self == s ) return true;
+    if( self.cs# != s.cs# ) return false;
+    for( int i=0; i< self.cs#; i++ )
+        if( self.cs[i] != s.cs[i] )
+            return false;
+    return true;
+};
+
+// Return the String hashCode (cached, and never 0)
+val hashCode = { !String self ->
+    self._hashCode
+    ?  self._hashCode
+    : (self._hashCode = _hashCodeString(self));
+};
+
+val _hashCodeString = { !String self ->
+    int hash=0;
+    for( int i=0; i< self.cs#; i++ )
+        hash = hash*31 + self.cs[i];
+    if( !hash ) hash = 123456789;
+    return hash;
+};
+""";
+        TestC.run(src, "stringHash",null, "", 9);
     }
 
     @Test public void testLoop2() throws IOException {
-        String src = Files.readString(Path.of("src/test/java/com/seaofnodes/simple/progs/loop2.smp"));
+        String src =
+"""
+int i = 0;
+while(true) {
+    i += 1;
+    if( i==0 ) continue;
+    if( i==1 ) continue;
+    if( i==2 ) break;
+    continue;
+}
+return i;
+""";
         testCPU(src,"x86_64_v2", "Win64"  ,0,"return (inc,Phi(Loop,0,inc));");
         testCPU(src,"riscv"    , "SystemV",0,"return ( Phi(Loop,0,addi) + #1 );");
         testCPU(src,"arm"      , "SystemV",0,"return (inc,Phi(Loop,0,inc));");
@@ -389,9 +485,22 @@ public class Chapter21Test {
 8  2.828427   (4.44089e-16)
 9  3.000000   (0)
 """;
-        TestC.run("newtonFloat",result,34);
+        String src =
+"""
+val test_sqrt = { flt x ->
+    flt epsilon = 1e-15;
+    flt guess = x;
+    while( 1 ) {
+        flt next = (x/guess + guess)/2;
+        if( guess-epsilon <= next & next <= guess+epsilon ) return guess;
+        //if( guess==next ) return guess;
+        guess = next;
+    }
+};
+""";
+        TestC.run(src, "newtonFloat", null, result, 34);
 
-        EvalRisc5 R5 = TestRisc5.build("newtonFloat", 0, 10, false);
+        EvalRisc5 R5 = TestRisc5.build("newtonFloat",src, 0, 10, false);
         R5.fregs[riscv.FA0 - riscv.F_OFFSET] = 3.0;
         int trap_r5 = R5.step(1000);
         assertEquals(0,trap_r5);
@@ -399,7 +508,7 @@ public class Chapter21Test {
         assertEquals(1.732051,R5.fregs[riscv.FA0 - riscv.F_OFFSET], 0.00001);
 
         // arm
-        EvalArm64 A5 = TestArm64.build("newtonFloat", 0, 10, false);
+        EvalArm64 A5 = TestArm64.build("newtonFloat", src,0, 10, false);
         A5.fregs[arm.D0 - arm.D_OFFSET] = 3.0;
         int trap_arm = A5.step(1000);
         assertEquals(0,trap_arm);
@@ -408,6 +517,39 @@ public class Chapter21Test {
 
 
     @Test public void testSieve() throws IOException {
+        String src =
+"""
+val sieve = { int N ->
+    // The main Sieve array
+    bool[] !ary = new bool[N];
+    // The primes less than N
+    u32[] !primes = new u32[N>>1];
+    // Number of primes so far, searching at index p
+    int nprimes = 0, p=2;
+    // Find primes while p^2 < N
+    while( p*p < N ) {
+        // skip marked non-primes
+        while( ary[p] ) p++;
+        // p is now a prime
+        primes[nprimes++] = p;
+        // Mark out the rest non-primes
+        for( int i = p + p; i < ary#; i+= p )
+            ary[i] = true;
+        p++;
+    }
+
+    // Now just collect the remaining primes, no more marking
+    for( ; p < N; p++ )
+        if( !ary[p] )
+            primes[nprimes++] = p;
+
+    // Copy/shrink the result array
+    u32[] !rez = new u32[nprimes];
+    for( int j=0; j < nprimes; j++ )
+        rez[j] = primes[j];
+    return rez;
+};
+""";
         // The primes
         int[] primes = new int[]  { 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97, };
         SB sb = new SB().p(primes.length).p("[");
@@ -416,11 +558,11 @@ public class Chapter21Test {
         String sprimes = sb.p("]").toString();
 
         // Compile, link against native C; expect the above string of primes to be printed out by C
-        TestC.run("sieve",sprimes, 186);
+        TestC.run(src, "sieve", null, sprimes, 186);
 
         // Evaluate on RISC5 emulator; expect return of an array of primes in
         // the simulated heap.
-        EvalRisc5 R5 = TestRisc5.build("sieve", 100, 92, false);
+        EvalRisc5 R5 = TestRisc5.build("sieve", src, 100, 92, false);
         int trap = R5.step(10000);
         assertEquals(0,trap);
         // Return register A0 holds sieve(100)
@@ -432,7 +574,7 @@ public class Chapter21Test {
 
         // Evaluate on ARM5 emulator; expect return of an array of primes in
         // the simulated heap.
-        EvalArm64 A5 = TestArm64.build("sieve", 100, 94, false);
+        EvalArm64 A5 = TestArm64.build("sieve", src, 100, 94, false);
         int trap_arm = A5.step(10000);
         assertEquals(0, trap_arm);
         int ary_arm = (int)A5.regs[arm.X0];
@@ -443,17 +585,30 @@ public class Chapter21Test {
     }
 
     @Test public void testFibExport() throws IOException {
+        String src =
+"""
+val fib = {int n ->
+    int f1=1;
+    int f2=1;
+    while( n-- > 1 ){
+        int temp = f1+f2;
+        f1=f2;
+        f2=temp;
+    }
+    return f2;
+};
+""";
         String fib = "[1, 1, 2, 3, 5, 8, 13, 21, 34, 55]";
-        TestC.run("fib", fib, 24);
+        TestC.run(src, "fib", null, fib, 24);
 
-        EvalRisc5 R5 = TestRisc5.build("fib", 9, 17, false);
+        EvalRisc5 R5 = TestRisc5.build("fib", src, 9, 17, false);
         int trap = R5.step(100);
         assertEquals(0,trap);
         // Return register A0 holds fib(8)==55
         assertEquals(55,R5.regs[riscv.A0]);
 
         // arm
-        EvalArm64 A5 = TestArm64.build("fib", 9, 17, false);
+        EvalArm64 A5 = TestArm64.build("fib", src, 9, 17, false);
         int trap_arm = A5.step(100);
         assertEquals(0,trap_arm);
         // Return register X0 holds fib(8)==55
diff --git a/src/test/java/com/seaofnodes/simple/Chapter22Test.java b/src/test/java/com/seaofnodes/simple/Chapter22Test.java
index 351fd571..3ff8dc09 100644
--- a/src/test/java/com/seaofnodes/simple/Chapter22Test.java
+++ b/src/test/java/com/seaofnodes/simple/Chapter22Test.java
@@ -126,7 +126,7 @@ public class Chapter22Test {
                     else assertEquals(42,cpu.regs[0]);
                 }
             }
-        CodeGen unused = new CodeGen("({->42;}); return 0;").parse().iter().finalizeIR();
+        CodeGen unused = new CodeGen("({->42;}); return 0;").driver(CodeGen.Phase.FinalizeIR);
         assertEquals(1,unused._stop.nIns());
     }
 
@@ -186,7 +186,8 @@ public class Chapter22Test {
         testCPU(src,"arm","SystemV",0,"return Top;");
     }
 
-    // Enabled in Chapter 23; measured there by Chapter23AllocTest.
+
+    // Frozen Jig runs in Chapter23AllocTest; the revised input is in Chapter24AllocTest.
     @Test @Ignore
     public void testJig() throws IOException {
         String src = Files.readString(Path.of("src/test/java/com/seaofnodes/simple/progs/jig.smp"));
@@ -223,11 +224,11 @@ return 0;
         assertEquals(56, testCPUSize(src, "arm","SystemV",4,"return 0;"));
 
         // do assertEquals here
-        EvalRisc5 R5 = TestRisc5.build("sext_str_not_fold_away", 0, 4, false);
+        EvalRisc5 R5 = TestRisc5.build("sext_str_not_fold_away", src,0, 4, false);
         int trap = R5.step(100);
         assertEquals(0,trap);
 
-        EvalArm64 A5 = TestArm64.build("sext_str_not_fold_away", 0, 4, false);
+        EvalArm64 A5 = TestArm64.build("sext_str_not_fold_away", src, 0, 4, false);
         trap = A5.step(100);
         assertEquals(0,trap);
 
@@ -243,11 +244,11 @@ return 0;
                 return 0;
         """;
 
-        EvalRisc5 R5 = TestRisc5.build("sext_str_not_fold_away_2", 0, 4, false);
+        EvalRisc5 R5 = TestRisc5.build("sext_str_not_fold_away_2", src, 0, 4, false);
         int trap = R5.step(100);
         assertEquals(0,trap);
 
-        EvalArm64 A5 = TestArm64.build("sext_str_not_fold_away_2", 0, 4, false);
+        EvalArm64 A5 = TestArm64.build("sext_str_not_fold_away_2", src, 0, 4, false);
         int trap_arm = A5.step(100);
         assertEquals(0,trap_arm);
 
@@ -267,11 +268,11 @@ p.age = (arg<<48)>>48;
 return 0;
        """;
 
-        EvalRisc5 R5 = TestRisc5.build("sext_str_fold_away", 0, 5, false);
+        EvalRisc5 R5 = TestRisc5.build("sext_str_fold_away", src, 0, 5, false);
         int trap = R5.step(100);
         assertEquals(0,trap);
 
-        EvalArm64 A5 = TestArm64.build("sext_str_fold_away", 0, 5, false);
+        EvalArm64 A5 = TestArm64.build("sext_str_fold_away", src, 0, 5, false);
         int trap_arm = A5.step(100);
         assertEquals(0,trap_arm);
 
@@ -284,8 +285,19 @@ return 0;
 
     // Int now is changed to 4 bytes.
     @Test public void testPerson() throws IOException {
+        String src =
+"""
+struct Person {
+    i32 age;
+};
+
+val fcn = { !Person?[] !ps, int x ->
+    if( ps[x] )
+        ps[x].age++;
+};
+""";
         String person = "6\n";
-        TestC.run("person", person, 0);
+        TestC.run(src, "person", null, person, 0);
 
         // Memory layout starting at PS:
         int ps = 1<<16;         // Person array pointer starts at heap start
@@ -296,7 +308,7 @@ return 0;
         int p1 = ps+4*8+1*8;
         // P2 = { age } // sizeof=8
         int p2 = ps+4*8+2*8;
-        EvalRisc5 R5 = TestRisc5.build("person", ps, 0, false);
+        EvalRisc5 R5 = TestRisc5.build("person", src, ps, 0, false);
         R5.regs[riscv.A1] = 1;  // Index 1
         R5.st8(ps,3);           // Length
         R5.st8(ps+1*8,p0);
@@ -312,7 +324,7 @@ return 0;
         assertEquals(17+1,R5.ld8(p1));
         assertEquals(60+0,R5.ld8(p2));
 
-        EvalArm64 A5 = TestArm64.build("person", ps, 0, false);
+        EvalArm64 A5 = TestArm64.build("person", src, ps, 0, false);
         A5.regs[arm.X1] = 1;  // Index 1
         A5.st8(ps, 3);
         A5.st8(ps+1*8,p0);
@@ -351,18 +363,22 @@ return cc.cz;
 
     @Test
     public void testHelloWorld() throws IOException {
-        String src = Files.readString(Path.of("src/test/java/com/seaofnodes/simple/progs/helloWorld.smp"));
+        String src =
+"""
+sys.io.p("Hello, World!");
+return 0;
+""";
         TestC.run(src,TestC.CALL_CONVENTION,null, null,null,"build/objs/helloWorld","","Hello, World!",0);
 
         // Evaluate on RISC5 emulator
-        EvalRisc5 R5 = TestRisc5.build("helloWorld", 0, 2, false);
+        EvalRisc5 R5 = TestRisc5.build("helloWorld", src, 0, 2, false);
         int trap = R5.step(100);
         assertEquals(0,trap);
         assertEquals(0,R5.regs[riscv.A0]);
         assertEquals("Hello, World!",R5._stdout.toString());
 
         // Evaluate on ARM emulator
-        EvalArm64 arm = TestArm64.build("helloWorld", 0, 2, false);
+        EvalArm64 arm = TestArm64.build("helloWorld", src,0, 2, false);
         trap = arm.step(100);
         assertEquals(0,trap);
         assertEquals(0,arm.regs[0]);
@@ -392,17 +408,21 @@ return sum(is);
 
     @Test @Ignore
     public void testEcho() throws IOException {
-        String src = Files.readString(Path.of("src/test/java/com/seaofnodes/simple/progs/echo.smp"));
+        String src =
+"""
+// Echo stdin to stdout.
+return sys.io.p( sys.io.stdin() );
+""";
         TestC.run(src,TestC.CALL_CONVENTION,null, null,null,"build/objs/echo","","",0);
 
         // Evaluate on RISC5 emulator
-        EvalRisc5 R5 = TestRisc5.build("echo", 0, 2, false);
+        EvalRisc5 R5 = TestRisc5.build("echo", src, 0, 2, false);
         int trap = R5.step(100);
         assertEquals(0,trap);
         assertEquals(0,R5.regs[riscv.A0]);
 
         // Evaluate on ARM emulator
-        EvalArm64 arm = TestArm64.build("echo", 0, 2, false);
+        EvalArm64 arm = TestArm64.build("echo", src, 0, 2, false);
         trap = arm.step(100);
         assertEquals(0,trap);
         assertEquals(0,arm.regs[0]);
diff --git a/src/test/java/com/seaofnodes/simple/Chapter23Test.java b/src/test/java/com/seaofnodes/simple/Chapter23Test.java
index e27434c2..22be3af1 100644
--- a/src/test/java/com/seaofnodes/simple/Chapter23Test.java
+++ b/src/test/java/com/seaofnodes/simple/Chapter23Test.java
@@ -25,6 +25,8 @@ public class Chapter23Test {
     @Test public void testDiagnosticTypeAccessors() throws Exception {
         new CodeGen("return 0;").parse();
         var tfp = TypeFunPtr.TEST;
+        var con = new ConstantNode(tfp);
+        var call = new CallNode(null,con,con,con);
         var field = Type.class.getDeclaredField("VISIT");
         field.setAccessible(true);
         var visit = (java.util.Map<Object,Type>)field.get(null);
@@ -34,6 +36,9 @@ public class Chapter23Test {
             assertEquals(0,TypeInteger.ZERO.alignment());
             assertEquals(0,TypeInteger.ZERO.value());
             org.junit.Assert.assertTrue(tfp._isConstant());
+            con.toString();
+            call.name();
+            con.p(1);
             org.junit.Assert.assertSame(Type.BOTTOM,visit.get(marker));
             assertEquals(1,visit.size());
         } finally { visit.clear(); }
@@ -94,10 +99,6 @@ var apply = { i64 x, { i64 -> u32 } fcn ->
 """;
     }
 
-    @Test @Ignore
-    public void myOwnSake2() throws IOException {
-        TestC.runS("print","Or",0);
-    }
 
     static CodeGen testCPU( String src, String cpu, String os, int spills, String stop ) {
         CodeGen code = new CheckedCodeGen(src).driver(CodeGen.Phase.Encoding,cpu,os);
@@ -110,17 +111,32 @@ var apply = { i64 x, { i64 -> u32 } fcn ->
 
     @Test
     public void testOr() throws IOException {
-        TestC.runS("or1","Or",0);
+        String src =
+                """
+                int a = 1;
+                int b = 0;
+                
+                if(a++ || b++ ) {
+                    if(b == 0 && a == 2) {
+                        sys.io.p("Or");
+                    }
+                } else{
+                    sys.io.p("And");
+                }
+                return 0;
+                """;
+
+        TestC.runSF("or1", src, null, "Or", 0);
 
         // Evaluate on RISC5 emulator
-        EvalRisc5 R5 = TestRisc5.build("or1", 0, 2, false);
+        EvalRisc5 R5 = TestRisc5.build("or1", src, 0, 2, false);
         int trap = R5.step(100);
         assertEquals(0,trap);
         assertEquals(0,R5.regs[riscv.A0]);
         assertEquals("Or",R5._stdout.toString());
 
         // Evaluate on ARM emulator
-        EvalArm64 arm = TestArm64.build("or1", 0, 2, false);
+        EvalArm64 arm = TestArm64.build("or1", src,0, 2, false);
         trap = arm.step(100);
         assertEquals(0,trap);
         assertEquals(0,arm.regs[0]);
@@ -129,17 +145,29 @@ var apply = { i64 x, { i64 -> u32 } fcn ->
 
     @Test
     public void testAnd() throws IOException {
-        TestC.runS("and1","And",0);
+        String src =
+                """
+                int a = 1;
+                int b = 1;
+                
+                if(a && b) {
+                    sys.io.p("And");
+                } else {
+                    sys.io.p("Or");
+                }
+                return 0;
+                """;
+        TestC.runSF("and1", src, null, "And", 0);
 
         // Evaluate on RISC5 emulator
-        EvalRisc5 R5 = TestRisc5.build("and1", 0, 2, false);
+        EvalRisc5 R5 = TestRisc5.build("and1", src, 0, 2, false);
         int trap = R5.step(100);
         assertEquals(0,trap);
         assertEquals(0,R5.regs[riscv.A0]);
         assertEquals("And",R5._stdout.toString());
 
         // Evaluate on ARM emulator
-        EvalArm64 arm = TestArm64.build("and1", 0, 2, false);
+        EvalArm64 arm = TestArm64.build("and1", src, 0, 2, false);
         trap = arm.step(100);
         assertEquals(0,trap);
         assertEquals(0,arm.regs[0]);
@@ -148,24 +176,38 @@ var apply = { i64 x, { i64 -> u32 } fcn ->
 
     @Test
     public void testAndPtr() throws IOException {
+        // Todo: have one src here
         String src =
-"""
-struct S { !S? !fld; };
-val ptr = arg == 1 ? null : new S{fld = arg==1 ? null : new S{fld = null;};};
-return ptr && ptr.fld ? "true" : "false";
-        """;
+                """
+                struct S { !S? !fld; };
+                val ptr = arg == 1 ? null : new S{fld = arg==1 ? null : new S{fld = null;};};
+                return ptr && ptr.fld ? "true" : "false";
+                """;
+        String src2 =
+                """
+                struct S { !S? !fld; };
+                
+                val ptr = arg == 1 ? null : new S{fld = arg==1 ? null : new S{fld = null;};};
+                if( ptr && ptr.fld ) {
+                  sys.io.p("true");
+                } else {
+                  sys.io.p("false");
+                }
+                
+                return 0;
+                """;
         CodeGen code = new CodeGen(src).driver(CodeGen.Phase.TypeCheck);
         assertEquals("[97-117][ 116,114,117,101]", Eval2.eval(code, 0));
 
         // Evaluate on RISC5 emulator
-        EvalRisc5 R5 = TestRisc5.build("ptrand", 1, 8, false);
+        EvalRisc5 R5 = TestRisc5.build("ptrand",src2, 1, 8, false);
         int trap = R5.step(100);
         assertEquals(0,trap);
         assertEquals(0,R5.regs[riscv.A0]);
         assertEquals("false",R5._stdout.toString());
 
         // Evaluate on ARM emulator
-        EvalArm64 arm = TestArm64.build("ptrand", 1, 8, false);
+        EvalArm64 arm = TestArm64.build("ptrand", src2, 1, 8, false);
         trap = arm.step(100);
         assertEquals(0,trap);
         assertEquals(0,arm.regs[0]);
@@ -175,37 +217,80 @@ return ptr && ptr.fld ? "true" : "false";
     // conditional side effect
     @Test
     public void testCondSideEffAnd() throws IOException {
-        TestC.runS("and2","Effected",0);
+        String src =
+                """
+                int a = 1;
+                int b = 1;
+                
+                int x=1;
+                int y=1;
+                int z=0;
+                
+                int g = x++ && y++ && z++;
+                
+                if(x == 2 && y == 2 && z == 1 && g == 0) {
+                    sys.io.p("Effected");
+                } else {
+                    sys.io.p("Not effected");
+                }
+                return 0;
+                """;
+
+        TestC.runSF("and2", src, null, "Effected", 0);
 
         // Evaluate on RISC5 emulator
-        EvalRisc5 R5 = TestRisc5.build("and2", 0, 2, false);
+        EvalRisc5 R5 = TestRisc5.build("and2", src, 0, 2, false);
         int trap = R5.step(100);
         assertEquals(0,trap);
         assertEquals(0,R5.regs[riscv.A0]);
         assertEquals("Effected",R5._stdout.toString());
 
         // Evaluate on ARM emulator
-        EvalArm64 arm = TestArm64.build("and2", 0, 2, false);
+        EvalArm64 arm = TestArm64.build("and2", src, 0, 2, false);
         trap = arm.step(100);
         assertEquals(0,trap);
         assertEquals(0,arm.regs[0]);
         assertEquals("Effected",arm._stdout.toString());
     }
 
-
     @Test
     public void testCondSideEffOr() throws IOException {
-        TestC.runS("or2","Effected",0);
+        String src =
+                """
+                int a = 1;
+                int b = 1;
+                
+                int x = -1;
+                int y=1;
+                int z= -1;
+                
+                int g = x++ || y++ || z++;
+                
+                int switch = 0;
+                if(x == 4 || y == 4 || z == 4) {
+                    switch = -1;
+                } else {
+                    switch = 1;
+                }
+                int cd = 1;
+                if((x == 0 && y == 1 && z==-1) && switch && g) {
+                    sys.io.p("Effected");
+                } else {
+                    sys.io.p("Not effected");
+                }
+                return 0;
+                """;
+        TestC.runSF("or2", src, null, "Effected", 0);
 
         // Evaluate on RISC5 emulator
-        EvalRisc5 R5 = TestRisc5.build("or2", 0, 2, false);
+        EvalRisc5 R5 = TestRisc5.build("or2", src, 0, 2, false);
         int trap = R5.step(100);
         assertEquals(0,trap);
         assertEquals(0,R5.regs[riscv.A0]);
         assertEquals("Effected",R5._stdout.toString());
 
         // Evaluate on ARM emulator
-        EvalArm64 arm = TestArm64.build("or2", 0, 2, false);
+        EvalArm64 arm = TestArm64.build("or2", src, 0, 2, false);
         trap = arm.step(100);
         assertEquals(0,trap);
         assertEquals(0,arm.regs[0]);
@@ -215,23 +300,41 @@ return ptr && ptr.fld ? "true" : "false";
     // test it with function calls
     @Test
     public void testFuncCall() throws IOException {
-        TestC.runS("and3","Or",0);
+        String src =
+                """
+                // -*- mode: java;  -*-
+                int a = 1;
+                int b = 1;
+                
+                var sq = { int x ->
+                    x*x;
+                };
+                
+                if(a && sq(0)) {
+                    sys.io.p("And");
+                } else {
+                    sys.io.p("Or");
+                }
+                return 0;
+                """;
+        TestC.runSF("and3", src, null, "Or", 0);
 
         // Evaluate on RISC5 emulator
-        EvalRisc5 R5 = TestRisc5.build("and3", 0, 2, false);
+        EvalRisc5 R5 = TestRisc5.build("and3", src, 0, 2, false);
         int trap = R5.step(100);
         assertEquals(0,trap);
         assertEquals(0,R5.regs[riscv.A0]);
         assertEquals("Or",R5._stdout.toString());
 
         // Evaluate on ARM emulator
-        EvalArm64 arm = TestArm64.build("and3", 0, 2, false);
+        EvalArm64 arm = TestArm64.build("and3", src, 0, 2, false);
         trap = arm.step(100);
         assertEquals(0,trap);
         assertEquals(0,arm.regs[0]);
         assertEquals("Or",arm._stdout.toString());
     }
 
+
     @Test
     public void testFRefFields() {
         String src =
diff --git a/src/test/java/com/seaofnodes/simple/Chapter24AllocTest.java b/src/test/java/com/seaofnodes/simple/Chapter24AllocTest.java
new file mode 100644
index 00000000..7fae2c27
--- /dev/null
+++ b/src/test/java/com/seaofnodes/simple/Chapter24AllocTest.java
@@ -0,0 +1,170 @@
+package com.seaofnodes.simple;
+
+import com.seaofnodes.isa.eval.EvalRisc5;
+
+import com.seaofnodes.isa.eval.EvalArm64;
+
+import java.io.IOException;
+import java.nio.file.*;
+import com.seaofnodes.simple.node.cpus.arm.arm;
+import com.seaofnodes.simple.node.cpus.riscv.riscv;
+import org.junit.Ignore;
+import org.junit.Test;
+import static org.junit.Assert.*;
+
+// Revised inherited programs belong to the chapter which changed their inputs.
+public class Chapter24AllocTest {
+    @Test
+    public void testNewtonInteger() {
+        String src =
+"""
+// Newtons approximation to the square root
+val sqrt = { int x ->
+    int guess = x;
+    while( 1 ) {
+        int next = (x/guess + guess)/2;
+        if( next == guess ) return guess;
+        guess = next;
+    }
+};
+int cast_int = arg+2;
+return sqrt(arg) + sqrt(cast_int);
+""";
+        Chapter24Test.testCPU(src,"x86_64_v2", "Win64"  ,40,null);
+        Chapter24Test.testCPU(src,"riscv"    , "SystemV",19,null);
+        Chapter24Test.testCPU(src,"arm"      , "SystemV",19,null);
+    }
+
+    @Ignore
+    @Test
+    public void testJig21() throws IOException {
+        String src =
+"""
+struct s0 {
+    bool v1;
+    i16 v2;
+    int v3;
+    i8 v4;
+    byte v5;
+};
+while(new s0.v3)
+    while(new s0.v5<<new s0.v4) {}
+if(0) {
+    if(0) {
+        flt !P5ZUD4=new s0.v2;
+    }
+    while(0) {}
+}
+return new s0.v1;
+""";
+        Chapter24Test.testCPU(src,"x86_64_v2", "Win64"  ,-1,null);
+        Chapter24Test.testCPU(src,"riscv"    , "SystemV",-1,null);
+        Chapter24Test.testCPU(src,"arm"      , "SystemV",-1,null);
+    }
+
+    @Test public void testStackArguments() throws IOException {
+        // Test passes more args than registers in Sys5, which is far far more
+        // than what Win64 allows - so Win64 gets a lot more spills here.
+        String src =
+"""
+val addAll = { int i0, flt f1, int i2, flt f3, int i4, flt f5, int i6, flt f7, int x8, flt f9, int i10, flt f11, int i12, flt f13, int i14, flt f15, int x16, flt f17 int x18, flt f19 ->
+    return
+    i0 + f1+ i2+ f3+ i4+ f5+ i6+ f7+ x8 +f9 +
+    i10+f11+i12+f13+i14+f15+x16+f17+x18+f19 ;
+};
+""";
+        String arg_count = "191.000000\n";
+
+        TestC.run(src, "arg_count", null, arg_count, TestC.CALL_CONVENTION.equals("Win64") ? 32 : 9);
+
+        EvalRisc5 R5 = TestRisc5.build("no_stack_arg_count", src, 0, 4, false);
+
+        // Todo: handle stack(imaginary stack in emulator)
+        // pass in float arguments
+        R5.fregs[riscv.FA0 - riscv.F_OFFSET] = 1.1;
+        R5.fregs[riscv.FA1 - riscv.F_OFFSET] = 1.1;
+        R5.fregs[riscv.FA2 - riscv.F_OFFSET] = 1.1;
+        R5.fregs[riscv.FA3 - riscv.F_OFFSET] = 1.1;
+        R5.fregs[riscv.FA4 - riscv.F_OFFSET] = 1.1;
+        R5.fregs[riscv.FA5 - riscv.F_OFFSET] = 1.1;
+        R5.fregs[riscv.FA6 - riscv.F_OFFSET] = 1.1;
+        R5.fregs[riscv.FA7 - riscv.F_OFFSET] = 1.1;
+
+        // a0 is passed in arg
+        R5.regs[riscv.A1] = 2;
+        R5.regs[riscv.A2] = 2;
+        R5.regs[riscv.A3] = 2;
+        R5.regs[riscv.A4] = 2;
+        R5.regs[riscv.A5] = 2;
+        R5.regs[riscv.A6] = 2;
+        R5.regs[riscv.A7] = 2;
+
+        int trap = R5.step(100);
+        assertEquals(0,trap);
+
+        double result = R5.fregs[riscv.FA0 - riscv.F_OFFSET];
+
+        assertEquals(22.8, result, 0.00001);
+
+        // arm
+        EvalArm64 A5 = TestArm64.build("no_stack_arg_count", src, 0, 4, false);
+
+        A5.fregs[arm.D0 - arm.D_OFFSET] = 1.1;
+        A5.fregs[arm.D1 - arm.D_OFFSET] = 1.1;
+        A5.fregs[arm.D2 - arm.D_OFFSET] = 1.1;
+        A5.fregs[arm.D3 - arm.D_OFFSET] = 1.1;
+        A5.fregs[arm.D4 - arm.D_OFFSET] = 1.1;
+        A5.fregs[arm.D5 - arm.D_OFFSET] = 1.1;
+        A5.fregs[arm.D6 - arm.D_OFFSET] = 1.1;
+        A5.fregs[arm.D7 - arm.D_OFFSET] = 1.1;
+
+        A5.regs[arm.X1]  = 2;
+        A5.regs[arm.X2]  = 2;
+        A5.regs[arm.X3]  = 2;
+        A5.regs[arm.X4]  = 2;
+        A5.regs[arm.X5]  = 2;
+        A5.regs[arm.X6]  = 2;
+        A5.regs[arm.X7]  = 2;
+
+        int trap_arm = A5.step(100);
+        assertEquals(0,trap_arm);
+
+        double result1 = A5.fregs[arm.D0 - arm.D_OFFSET];
+        assertEquals(22.8, result1, 0.00001);
+    }
+
+    @Ignore
+    @Test
+    public void testJig22() throws IOException {
+        String src =
+"""
+val fib = {int n ->
+    int temp=0;
+    int f1=1;
+    int f2=1;
+    int i=n;
+    while( i>1 ){
+        temp = f1+f2;
+        f1=f2;
+        f2=temp;
+        i=i-1;
+    }
+    return f2;
+};
+
+fib(10);
+""";
+        Chapter24Test.testCPU(src,"x86_64_v2", "Win64"  ,-1,null);
+        Chapter24Test.testCPU(src,"riscv"    , "SystemV",-1,null);
+        Chapter24Test.testCPU(src,"arm"      , "SystemV",-1,null);
+    }
+
+    @Test
+    public void testBubbleSort() throws IOException {
+        //String src = Files.readString(Path.of("src/test/java/com/seaofnodes/simple/progs/jig.smp"));
+        String src = Files.readString(Path.of("docs/examples/BubbleSort.smp"));
+        Chapter24Test.testCPU(src,"x86_64_v2", "Win64"  ,-1,null);
+        Chapter24Test.testCPU(src,"riscv"    , "SystemV",-1,null);
+        Chapter24Test.testCPU(src,"arm"      , "SystemV",-1,null);
+    }
+}
diff --git a/src/test/java/com/seaofnodes/simple/Chapter24Test.java b/src/test/java/com/seaofnodes/simple/Chapter24Test.java
new file mode 100644
index 00000000..3e5dc2a9
--- /dev/null
+++ b/src/test/java/com/seaofnodes/simple/Chapter24Test.java
@@ -0,0 +1,735 @@
+package com.seaofnodes.simple;
+
+import com.seaofnodes.isa.eval.EvalRisc5;
+
+import com.seaofnodes.isa.eval.EvalArm64;
+
+import com.seaofnodes.simple.codegen.RegAllocTestSupport.CheckedCodeGen;
+import com.seaofnodes.simple.node.*;
+import com.seaofnodes.simple.type.*;
+
+
+import com.seaofnodes.simple.codegen.CodeGen;
+import com.seaofnodes.simple.node.cpus.riscv.riscv;
+import java.io.IOException;
+import org.junit.Ignore;
+import org.junit.Test;
+import static org.junit.Assert.*;
+
+public class Chapter24Test {
+    @Test public void testRecursiveWidening() {
+        String[] srcs = {
+            // Parm(x) must widen even though the recursive result is constant.
+            "val f = { int x, int limit -> x >= limit ? 0 : f(x+1,limit); }; return f(0,arg);",
+            // The growing result has its own cycle, which never crosses Parm(x).
+            "val f = { int x -> x <= 0 ? 0 : f(x-1)+1; }; return f(3);"
+        };
+        for( int i=0; i<srcs.length; i++ )
+            for( long seed : new long[]{0,42,126} ) {
+                var code = new CodeGen(srcs[i],TypeInteger.BOT,seed,true).driver(CodeGen.Phase.LocalSched);
+                assertEquals(i==0 ? "0" : "3",Eval2.eval(code,3));
+            }
+    }
+
+    @Test public void testColdLoopSelfConflict() { com.seaofnodes.simple.codegen.RegAllocTestSupport.coldLoopSelfConflict(); }
+
+    @Test public void testPrintingDeadFunction() throws Exception {
+        var code = new CodeGen("return 0;").parse();
+        var tfp = TypeFunPtr.TEST;
+        var fun = new FunNode(null,tfp,"deadPrinterTarget");
+        org.junit.Assert.assertTrue(fun.isDead());
+        code.link(fun);
+        var con = new ConstantNode(tfp);
+        var call = new CallNode(null,con,con,con);
+        con.toString();
+        call.name();
+
+        org.junit.Assert.assertSame(fun,code._link(tfp));
+        // Optimizer lookup still performs its usual lazy cleanup.
+        org.junit.Assert.assertNull(code.link(tfp));
+        org.junit.Assert.assertNull(code._link(tfp));
+    }
+
+
+    @Ignore
+    @Test
+    public void testJig() throws IOException {
+        String src = "int v0=0;  v0 = arg && 0== 0 !=0;";
+        testCPU(src,"x86_64_v2", "Win64"  ,-1,null);
+        testCPU(src,"riscv"    , "SystemV",-1,null);
+        testCPU(src,"arm"      , "SystemV",-1,null);
+    }
+
+    static CodeGen testCPU( String src, String cpu, String os, int spills, String stop ) {
+        CodeGen code = new CheckedCodeGen(src).driver(CodeGen.Phase.Encoding,cpu,os);
+        SpillStats.record(code,"Chapter24",cpu,os);
+        SpillStats.checkSpills(spills,code._regAlloc._spillScaled);
+        if( stop != null )
+            assertEquals(stop, code._stop.toString());
+        return code;
+    }
+
+    @Test
+    public void testOr() throws IOException {
+        String src =
+"""
+int a = 1;
+int b = 0;
+
+if(a++ || b++ ) {
+    if(b == 0 && a == 2) {
+        sys.io.p("Or");
+    }
+} else{
+    sys.io.p("And");
+}
+return 0;
+""";
+
+        TestC.runSF("or1", src, null, "Or", 0);
+
+        // Evaluate on RISC5 emulator
+        EvalRisc5 R5 = TestRisc5.build("or1", src, 0, 2, false);
+        int trap = R5.step(100);
+        assertEquals(0,trap);
+        assertEquals(0,R5.regs[riscv.A0]);
+        assertEquals("Or",R5._stdout.toString());
+
+        // Evaluate on ARM emulator
+        EvalArm64 arm = TestArm64.build("or1", src,0, 2, false);
+        trap = arm.step(100);
+        assertEquals(0,trap);
+        assertEquals(0,arm.regs[0]);
+        assertEquals("Or",arm._stdout.toString());
+    }
+
+    @Test
+    public void testAnd() throws IOException {
+        String src =
+"""
+int a = 1;
+int b = 1;
+
+if(a && b) {
+    sys.io.p("And");
+} else {
+    sys.io.p("Or");
+}
+return 0;
+""";
+        TestC.runSF("and1", src, null, "And", 0);
+
+        // Evaluate on RISC5 emulator
+        EvalRisc5 R5 = TestRisc5.build("and1", src, 0, 2, false);
+        int trap = R5.step(100);
+        assertEquals(0,trap);
+        assertEquals(0,R5.regs[riscv.A0]);
+        assertEquals("And",R5._stdout.toString());
+
+        // Evaluate on ARM emulator
+        EvalArm64 arm = TestArm64.build("and1", src, 0, 2, false);
+        trap = arm.step(100);
+        assertEquals(0,trap);
+        assertEquals(0,arm.regs[0]);
+        assertEquals("And",arm._stdout.toString());
+    }
+
+    @Test
+    public void testAndPtr() throws IOException {
+        // Todo: have one src here
+        String src =
+"""
+struct S { !S? !fld; };
+val ptr = arg == 1 ? null : new S{fld = arg==1 ? null : new S{fld = null;};};
+return ptr && ptr.fld ? "true" : "false";
+""";
+        String src2 =
+"""
+struct S { !S? !fld; };
+
+val ptr = arg == 1 ? null : new S{fld = arg==1 ? null : new S{fld = null;};};
+if( ptr && ptr.fld ) {
+  sys.io.p("true");
+} else {
+  sys.io.p("false");
+}
+
+return 0;
+""";
+        CodeGen code = new CodeGen(src).driver(CodeGen.Phase.TypeCheck);
+        assertEquals("[97-117][ 116,114,117,101]", Eval2.eval(code, 0));
+
+        // Evaluate on RISC5 emulator
+        EvalRisc5 R5 = TestRisc5.build("ptrand",src2, 1, 8, false);
+        int trap = R5.step(100);
+        assertEquals(0,trap);
+        assertEquals(0,R5.regs[riscv.A0]);
+        assertEquals("false",R5._stdout.toString());
+
+        // Evaluate on ARM emulator
+        EvalArm64 arm = TestArm64.build("ptrand", src2, 1, 8, false);
+        trap = arm.step(100);
+        assertEquals(0,trap);
+        assertEquals(0,arm.regs[0]);
+        assertEquals("false",arm._stdout.toString());
+    }
+
+    // conditional side effect
+    @Test
+    public void testCondSideEffAnd() throws IOException {
+        String src =
+"""
+int a = 1;
+int b = 1;
+
+int x=1;
+int y=1;
+int z=0;
+
+int g = x++ && y++ && z++;
+
+if(x == 2 && y == 2 && z == 1 && g == 0) {
+    sys.io.p("Effected");
+} else {
+    sys.io.p("Not effected");
+}
+return 0;
+""";
+
+        TestC.runSF("and2", src, null, "Effected", 0);
+
+        // Evaluate on RISC5 emulator
+        EvalRisc5 R5 = TestRisc5.build("and2", src, 0, 2, false);
+        int trap = R5.step(100);
+        assertEquals(0,trap);
+        assertEquals(0,R5.regs[riscv.A0]);
+        assertEquals("Effected",R5._stdout.toString());
+
+        // Evaluate on ARM emulator
+        EvalArm64 arm = TestArm64.build("and2", src, 0, 2, false);
+        trap = arm.step(100);
+        assertEquals(0,trap);
+        assertEquals(0,arm.regs[0]);
+        assertEquals("Effected",arm._stdout.toString());
+    }
+
+
+    @Test
+    public void testCondSideEffOr() throws IOException {
+        String src =
+"""
+int a = 1;
+int b = 1;
+
+int x = -1;
+int y=1;
+int z= -1;
+
+int g = x++ || y++ || z++;
+
+int switch = 0;
+if(x == 4 || y == 4 || z == 4) {
+    switch = -1;
+} else {
+    switch = 1;
+}
+int cd = 1;
+if((x == 0 && y == 1 && z==-1) && switch && g) {
+    sys.io.p("Effected");
+} else {
+    sys.io.p("Not effected");
+}
+return 0;
+""";
+        TestC.runSF("or2", src, null, "Effected", 0);
+
+        // Evaluate on RISC5 emulator
+        EvalRisc5 R5 = TestRisc5.build("or2", src, 0, 2, false);
+        int trap = R5.step(100);
+        assertEquals(0,trap);
+        assertEquals(0,R5.regs[riscv.A0]);
+        assertEquals("Effected",R5._stdout.toString());
+
+        // Evaluate on ARM emulator
+        EvalArm64 arm = TestArm64.build("or2", src, 0, 2, false);
+        trap = arm.step(100);
+        assertEquals(0,trap);
+        assertEquals(0,arm.regs[0]);
+        assertEquals("Effected",arm._stdout.toString());
+    }
+
+    // test it with function calls
+    @Test
+    public void testFuncCall() throws IOException {
+        String src =
+"""
+// -*- mode: java;  -*-
+int a = 1;
+int b = 1;
+
+var sq = { int x ->
+    x*x;
+};
+
+if(a && sq(0)) {
+    sys.io.p("And");
+} else {
+    sys.io.p("Or");
+}
+return 0;
+""";
+        TestC.runSF("and3", src, null, "Or", 0);
+
+        // Evaluate on RISC5 emulator
+        EvalRisc5 R5 = TestRisc5.build("and3", src, 0, 2, false);
+        int trap = R5.step(100);
+        assertEquals(0,trap);
+        assertEquals(0,R5.regs[riscv.A0]);
+        assertEquals("Or",R5._stdout.toString());
+
+        // Evaluate on ARM emulator
+        EvalArm64 arm = TestArm64.build("and3", src, 0, 2, false);
+        trap = arm.step(100);
+        assertEquals(0,trap);
+        assertEquals(0,arm.regs[0]);
+        assertEquals("Or",arm._stdout.toString());
+    }
+
+    // test it with function calls
+    @Test
+    public void testStack1() throws IOException {
+        String src =
+"""
+int something_specific = 11;
+
+if (10 < something_specific < 20) {
+    sys.io.p("In Range");
+} else {
+   sys.io.p("Out of Range");
+}
+return 0;
+""";
+
+        TestC.runSF("stacked_r_1", src, null, "In Range", 0);
+
+        // Evaluate on RISC5 emulator
+        EvalRisc5 R5 = TestRisc5.build("stacked_r_1", src, 0, 2, false);
+        int trap = R5.step(100);
+        assertEquals(0,trap);
+        assertEquals(0,R5.regs[riscv.A0]);
+        assertEquals("In Range",R5._stdout.toString());
+
+        // Evaluate on ARM emulator
+        EvalArm64 arm = TestArm64.build("stacked_r_1", src, 0, 2, false);
+        trap = arm.step(100);
+        assertEquals(0,trap);
+        assertEquals(0,arm.regs[0]);
+        assertEquals("In Range",arm._stdout.toString());
+    }
+
+    @Test
+    public void testStack2() throws IOException {
+        String src =
+"""
+int score = 75;
+
+if (60 <= score < 90) {
+    sys.io.p("In Range");
+} else {
+sys.io.p("Out of range");
+}
+return 0;
+""";
+
+        TestC.runSF("stacked_r_2", src, null, "In Range", 0);
+
+        // Evaluate on RISC5 emulator
+        EvalRisc5 R5 = TestRisc5.build("stacked_r_2", src, 0, 2, false);
+        int trap = R5.step(100);
+        assertEquals(0,trap);
+        assertEquals(0,R5.regs[riscv.A0]);
+        assertEquals("In Range",R5._stdout.toString());
+
+        // Evaluate on ARM emulator
+        EvalArm64 arm = TestArm64.build("stacked_r_2", src, 0, 2, false);
+        trap = arm.step(100);
+        assertEquals(0,trap);
+        assertEquals(0,arm.regs[0]);
+        assertEquals("In Range",arm._stdout.toString());
+    }
+
+    @Test
+    public void testStack3() throws IOException {
+        String src =
+"""
+var sq = { int x ->
+    x*x;
+};
+
+int score = 5;
+
+val str = (sq(2) <= score < sq(3)) ? "In Range" : "Out of range";
+sys.io.p(str);
+return 0;
+""";
+
+        TestC.runSF("stacked_r_3", src, null, "In Range", 5);
+
+        // Evaluate on RISC5 emulator
+        EvalRisc5 R5 = TestRisc5.build("stacked_r_3", src, 0, 5, false);
+        int trap = R5.step(100);
+        assertEquals(0,trap);
+        assertEquals(0,R5.regs[riscv.A0]);
+        assertEquals("In Range",R5._stdout.toString());
+
+        // Evaluate on ARM emulator
+        EvalArm64 arm = TestArm64.build("stacked_r_3", src, 0, 5, false);
+        int trap_1 = arm.step(100);
+        assertEquals(0,trap_1);
+        assertEquals(0,arm.regs[0]);
+        assertEquals("In Range",arm._stdout.toString());
+    }
+
+    @Test
+    public void testStack4() throws IOException {
+        String src =
+"""
+int something_specific = 9;
+
+if (10 < something_specific < 20) {
+    sys.io.p("In Range");
+} else {
+   sys.io.p("Out of Range");
+}
+return 0;
+""";
+
+        TestC.runSF("stacked_r_4", src, null, "Out of Range", 0);
+
+        // Evaluate on RISC5 emulator
+        EvalRisc5 R5 = TestRisc5.build("stacked_r_4", src,0, 2, false);
+        int trap = R5.step(100);
+        assertEquals(0,trap);
+        assertEquals(0,R5.regs[riscv.A0]);
+        assertEquals("Out of Range",R5._stdout.toString());
+
+        // Evaluate on ARM emulator
+        EvalArm64 arm = TestArm64.build("stacked_r_4", src, 0, 2, false);
+        trap = arm.step(100);
+        assertEquals(0,trap);
+        assertEquals(0,arm.regs[0]);
+        assertEquals("Out of Range",arm._stdout.toString());
+    }
+
+    @Test
+    public void testStack5() throws IOException {
+        String src =
+"""
+var sq = { int x ->
+    x*x;
+};
+
+int score = 5;
+
+if (sq(2) <= score < sq(3)) {
+sys.io.p("In Range");
+} else {
+sys.io.p("Out of range");
+}
+
+return 0;
+""";
+        TestC.runSF("stacked_r_5", src, null, "In Range", 5);
+
+        // Evaluate on RISC5 emulator
+        EvalRisc5 R5 = TestRisc5.build("stacked_r_5", src, 0, 7, false);
+        int trap = R5.step(100);
+        assertEquals(0,trap);
+        assertEquals(0,R5.regs[riscv.A0]);
+        assertEquals("In Range",R5._stdout.toString());
+
+        // Evaluate on ARM emulator
+        EvalArm64 arm = TestArm64.build("stacked_r_5", src, 0, 7, false);
+        trap = arm.step(100);
+        assertEquals(0,trap);
+        assertEquals(0,arm.regs[0]);
+        assertEquals("In Range",arm._stdout.toString());
+    }
+
+
+    @Test
+    public void testStack6() {
+        try { new CodeGen(
+                    """
+                        return 0 < arg > 1;
+                        """
+        ).parse(); fail(); }
+        catch( RuntimeException e ) { assertEquals("Mixing relational directions in a chained relational test",e.getMessage()); }
+    }
+
+    @Test
+    public void testStack9() throws IOException {
+        String stack9 = "1";
+        String src =
+"""
+var stack9 = { int x ->
+    (x < 1) == 1;
+};
+""";
+        String src2 =
+"""
+return (0 < 1) == 1;
+""";
+        TestC.run(src, "stacked_r_9x", null, stack9,0);
+
+        // Evaluate on RISC5 emulator
+        EvalRisc5 R5 = TestRisc5.build("stacked_r_9", src2, 0, 0, false);
+        int trap = R5.step(100);
+        assertEquals(0,trap);
+        assertEquals(1,R5.regs[riscv.A0]);
+
+        // Evaluate on ARM emulator
+        EvalArm64 arm = TestArm64.build("stacked_r_9", src2, 0, 0, false);
+        trap = arm.step(100);
+        assertEquals(0,trap);
+        assertEquals(1,arm.regs[0]);
+    }
+
+    @Test
+    public void testStack10() throws IOException {
+        String stack10 = "1";
+        String src =
+"""
+var stack10 = { int x ->
+    (x < 1) == (1>x);
+};
+""";
+    String src2 =
+"""
+return (0 < 1) == (1>0);
+""";
+        TestC.run(src, "stacked_r_10x", null, stack10,0);
+
+        // Evaluate on RISC5 emulator
+        EvalRisc5 R5 = TestRisc5.build("stacked_r_10", src2, 0, 0, false);
+        int trap = R5.step(100);
+        assertEquals(0,trap);
+        assertEquals(1,R5.regs[riscv.A0]);
+
+        // Evaluate on ARM emulator
+        EvalArm64 arm = TestArm64.build("stacked_r_10", src2,0, 0, false);
+        trap = arm.step(100);
+        assertEquals(0,trap);
+        assertEquals(1,arm.regs[0]);
+    }
+
+    @Test
+    public void testStack11() throws IOException {
+        String stack11 = "1";
+        String src =
+"""
+var stack11 = { int x ->
+    0 < x < x+1 < 4;
+};
+""";
+        String src2 =
+"""
+return 0 < arg < arg+1 < 4;
+""";
+        TestC.run(src, "stacked_r_11x", null, stack11,2);
+
+        // Evaluate on RISC5 emulator
+        EvalRisc5 R5 = TestRisc5.build("stacked_r_11", src2, 1, 2, false);
+        int trap = R5.step(100);
+        assertEquals(0,trap);
+        assertEquals(1,R5.regs[riscv.A0]);
+
+        // Evaluate on ARM emulator
+        EvalArm64 arm = TestArm64.build("stacked_r_11", src2, 1, 0, false);
+        trap = arm.step(100);
+        assertEquals(0,trap);
+        assertEquals(1,arm.regs[0]);
+    }
+
+    // shows that it is parsed as
+    // ((0 != x) != 2)
+    @Test
+    public void testStack12() throws IOException {
+        String stack11 = "1";
+        String src =
+                """
+                var stack12 = { int x ->
+                    0 != x != 2;
+                };
+                """;
+        String src2 =
+                """
+                return 0 != arg != 2;
+                """;
+        TestC.run(src, "stacked_r_12x", null, stack11,0);
+
+        // Evaluate on RISC5 emulator
+        EvalRisc5 R5 = TestRisc5.build("stacked_r_12", src2, 1, 0, false);
+        int trap = R5.step(100);
+        assertEquals(0,trap);
+        assertEquals(1,R5.regs[riscv.A0]);
+
+        // Evaluate on ARM emulator
+        EvalArm64 arm = TestArm64.build("stacked_r_12", src2, 1, 0, false);
+        trap = arm.step(100);
+        assertEquals(0,trap);
+        assertEquals(1,arm.regs[0]);
+    }
+
+
+    // shows that it is parsed as
+    // ((0 == x) == 1)
+    @Test
+    public void testStack13() throws IOException {
+        String stack12 = "1";
+        String src =
+                """
+                var stack13 = { int x ->
+                    0 == x == 1;
+                };
+                """;
+        String src2 =
+                """
+                return 0 == arg == 1;
+                """;
+        TestC.run(src, "stacked_r_13x", null, stack12,0);
+
+        // Compile once per target, then check false, true and negative inputs.
+        EvalRisc5 R5 = TestRisc5.build("stacked_r_13", src2, 1, 0, false);
+        for( int arg : new int[]{-1,0,1} ) {
+            R5._pc = 0;
+            R5.regs[riscv.A0] = arg;
+            assertEquals(0,R5.step(100));
+            assertEquals(arg==0 ? 1 : 0,R5.regs[riscv.A0]);
+        }
+        EvalArm64 arm = TestArm64.build("stacked_r_13", src2, 1, 0, false);
+        for( int arg : new int[]{-1,0,1} ) {
+            arm._pc = 0;
+            arm.regs[0] = arg;
+            assertEquals(0,arm.step(100));
+            assertEquals(arg==0 ? 1 : 0,arm.regs[0]);
+        }
+    }
+
+    @Test
+    public void testFRefFields() {
+        String src =
+"""
+// A hypothetical scanner class
+struct Scan {
+    int !x;
+    u8[~] !buf;
+    // Skip whitespace
+    val skip = { !Scan s ->
+        while( s.buf[s.x] <= ' ' )
+            s.x++;
+    };
+    // Peek a character; if matched consume it, else false.
+    val peek = { !Scan !s, u8 c ->
+        skip(s);
+        if( s.buf[s.x] != c ) return false;
+        s.x++;
+        return true;
+    };
+};
+!Scan !s = new Scan{ buf = "  q"; };
+return Scan.peek(s,'q');
+""";
+
+        CodeGen code = new CodeGen(src).driver(CodeGen.Phase.TypeCheck);
+        assertEquals("return Phi(Region,0,1);", code._stop.toString());
+        assertEquals("1", Eval2.eval(code, 0));
+        testCPU(src,"x86_64_v2", "Win64"  ,23,null);
+    };
+
+    @Test
+    public void testFRefFields2() {
+        String src =
+"""
+// A hypothetical scanner class
+struct Scan {
+    int !x;
+    u8[~] !buf;
+    // Skip whitespace
+    val skip = { ->
+        while( buf[x] <= ' ' )
+            x++;
+        return self;
+    };
+};
+~Scan s = new Scan{ buf = "  q"; };
+return s.skip().x;
+""";
+
+        try { new CodeGen(src).driver(CodeGen.Phase.TypeCheck); fail(); }
+        catch( Exception e ) { org.junit.Assert.assertTrue(e.getMessage().startsWith("Argument #0 isa")); }
+    };
+
+
+    @Test
+    public void testMethod() {
+        String src =
+"""
+// A hypothetical scanner class
+struct Scan {
+    int !x;
+    u8[~] !buf;
+    // Skip whitespace
+    val skip = { ->
+        while( buf[x] <= ' ' )
+            x++;
+    };
+    val require = { u8 ch ->
+        skip();
+        buf[x++]==ch;
+    };
+};
+!Scan !s = new Scan{ buf = "  [1,2]"; };
+return s.require('[');
+""";
+
+        CodeGen code = new CodeGen(src).driver(CodeGen.Phase.TypeCheck);
+        assertEquals("return (.[]==91);", code._stop.toString());
+        assertEquals("1", Eval2.eval(code, 0));
+        testCPU(src,"x86_64_v2", "Win64"  ,4,null);
+    };
+
+    @Test
+    public void testSCCP0() {
+        String src =
+"""
+int x = 1;
+int cnt = 5;
+while (cnt) {
+  cnt -= 1;
+  if (x == 0) {
+    x += 1;
+  }
+}
+return x;
+""";
+        CodeGen code = new CodeGen(src).driver(CodeGen.Phase.TypeCheck);
+        assertEquals("return 1;", code._stop.toString());
+    }
+
+    @Test
+    public void testSCCP1() {
+        String src =
+"""
+int x = 1;
+int cnt = 5;
+while( cnt-- )
+  if( x == 1 )
+    x = 2-x;
+return x;
+""";
+        CodeGen code = new CodeGen(src).driver(CodeGen.Phase.TypeCheck);
+        assertEquals("return 1;", code._stop.toString());
+    }
+
+}
diff --git a/src/test/java/com/seaofnodes/simple/Eval2.java b/src/test/java/com/seaofnodes/simple/Eval2.java
index 908cc2e0..98e0f18a 100644
--- a/src/test/java/com/seaofnodes/simple/Eval2.java
+++ b/src/test/java/com/seaofnodes/simple/Eval2.java
@@ -319,14 +319,23 @@ public abstract class Eval2 {
             // Unknown-caller inputs are type placeholders, not heap constants.
             if( !tmp.isConstant() ) yield tmp;
             if( tmp._obj.isAry() ) { // Constant array ptr
-                TypeConAry con = (TypeConAry)tmp._obj.field("[]")._t;
-                Object[] xs = new Object[con.len()];
-                for( int i=0; i<con.len(); i++ )
-                    xs[i] = con.at8(i);
-                yield xs;
+                Type elem = tmp._obj.field("[]")._t;
+                if( elem instanceof TypeConAry con ) {
+                    Object[] xs = new Object[con.len()];
+                    for( int i=0; i<con.len(); i++ )
+                        xs[i] = con.at8(i);
+                    yield xs;
+                } else {
+                    // Generic constant array, used as a default input to a
+                    // function; should never execute.
+                    yield new Object[0];
+                }
 
             } else {
-                throw Utils.TODO(); // Constant non-array ptr
+                // Generic TMP (since Simple is not currently making actual
+                // memory constants), used as a default input to a function;
+                // should never execute.
+                yield tmp.toString();
             }
         }
         default -> null;
diff --git a/src/test/java/com/seaofnodes/simple/MemoryEncodingTest.java b/src/test/java/com/seaofnodes/simple/MemoryEncodingTest.java
index 3397a850..397d644c 100644
--- a/src/test/java/com/seaofnodes/simple/MemoryEncodingTest.java
+++ b/src/test/java/com/seaofnodes/simple/MemoryEncodingTest.java
@@ -66,7 +66,7 @@ public class MemoryEncodingTest {
             """
         };
         for( int p=0; p<sources.length; p++ ) {
-            CodeGen code=new CodeGen(sources[p]).parse().iter().finalizeIR();
+            CodeGen code=new CodeGen(sources[p]).driver(CodeGen.Phase.FinalizeIR);
             if( p==0 ) assertNull(code._stop.walk(n ->
                 n instanceof LoadNode ld && ld.ptr() instanceof ProjNode ptr &&
                 ptr.in(0) instanceof NewNode nn &&
@@ -112,8 +112,7 @@ public class MemoryEncodingTest {
     @Test public void testEmulatedMemory() throws IOException {
         for( String target : new String[]{"riscv","arm"} )
             for( int p=0; p<SOURCES.length; p++ ) {
-                CodeGen code = new CodeGen(SOURCES[p]).driver(target,"SystemV",null);
-                RegAllocTestSupport.checkRegisters(code);
+                CodeGen code = new RegAllocTestSupport.CheckedCodeGen(SOURCES[p]).driver(target,"SystemV",null);
                 int entry=0;
                 for( var n : code._start._outputs )
                     if( n instanceof FunNode fun && "main".equals(fun._name) )
diff --git a/src/test/java/com/seaofnodes/simple/MergeSortTest.java b/src/test/java/com/seaofnodes/simple/MergeSortTest.java
index 39cacd98..453bd35c 100644
--- a/src/test/java/com/seaofnodes/simple/MergeSortTest.java
+++ b/src/test/java/com/seaofnodes/simple/MergeSortTest.java
@@ -3,8 +3,8 @@ package com.seaofnodes.simple;
 import com.seaofnodes.isa.eval.EvalRisc5;
 
 import com.seaofnodes.simple.codegen.CodeGen;
-import com.seaofnodes.simple.util.SB;
 import com.seaofnodes.simple.node.cpus.riscv.riscv;
+import com.seaofnodes.simple.util.SB;
 import java.io.IOException;
 import java.nio.file.Files;
 import java.nio.file.Path;
@@ -15,15 +15,54 @@ import static org.junit.Assert.fail;
 public class MergeSortTest {
 
     @Test public void testMergeSort0() throws IOException {
+        // Test merge sort on a small array of primes
+        String src =
+""" 
+        val merge_sort = { int[] a ->
+            int[] !b = new int[a#];
+            copy_array (a, 0, a#, b);
+            split_merge(a, 0, a#, b);
+        };
+        
+        val split_merge = { int[] !b, int begin, int end, int[] a ->
+            if (end - begin <= 1)
+                return 0;
+            int middle = (end + begin) / 2;
+            split_merge(a, begin, middle, b);
+            split_merge(a, middle, end, b);
+            merge(b, begin, middle, end, a);
+            return 0;
+        };
+        
+        val merge = { int[] !b, int begin, int middle, int end, int[] a ->
+            int i = begin, j = middle;
+        
+            for (int k = begin; k < end; k++) {
+                // && and ||
+                bool cond = false;
+                if (i < middle) {
+                    if (j >= end)          cond = true;
+                    else if (a[i] <= a[j]) cond = true;
+                }
+                if (cond) b[k] = a[i++];
+                else      b[k] = a[j++];
+            }
+        };
+        
+        val copy_array = { int[] !a, int begin, int end, int[] b ->
+            for (int k = begin; k < end; k++)
+                b[k] = a[k];
+        };
+""";
         int[] primes = new int[] { 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97, };
         SB sb = new SB().p(primes.length).p("[");
         for( int prime : primes )
             sb.p(prime).p(", ");
         String sprimes = sb.p("]").toString();
-        TestC.run("sort", sprimes, 34);
+        TestC.run(src, "sort", null, sprimes, 34);
 
 
-        EvalRisc5 R5 = TestRisc5.build("src/test/java/com/seaofnodes/simple/progs", "sort", "merge_sort", 0, 36, false);
+        EvalRisc5 R5 = TestRisc5.build("src/test/java/com/seaofnodes/simple/progs",src,  "sort", "merge_sort", 0, 36, false);
         // Allocate an array of primes, filled in reverse order
         int ps = R5._heap;
         R5._heap += (primes.length+1)*8; // 25 primes, and length
@@ -41,7 +80,6 @@ public class MergeSortTest {
             assertEquals(primes[i], R5.ld8(ps+(i+1)*8));
 
         // TODO: replace with ARM Eval
-        String src = Files.readString(Path.of("src/test/java/com/seaofnodes/simple/progs/sort.smp"));
         Chapter21Test.testCPU(src,"arm", "SystemV",36,null);
     }
 }
diff --git a/src/test/java/com/seaofnodes/simple/PhaseTest.java b/src/test/java/com/seaofnodes/simple/PhaseTest.java
index 885889a8..899f42fe 100644
--- a/src/test/java/com/seaofnodes/simple/PhaseTest.java
+++ b/src/test/java/com/seaofnodes/simple/PhaseTest.java
@@ -27,7 +27,7 @@ public class PhaseTest {
         code.driver(Phase.LoopTree);
         assertEquals(Phase.LoopTree,code._phase);
         code.driver(Phase.LocalSched);
-        assertEquals("Parse Iter FinalizeIR TypeCheck LoopTree Schedule LocalSched",String.join(" ",phases));
+        assertEquals("Parse Iter Opto IterPostOpto FinalizeIR TypeCheck LoopTree Schedule LocalSched",String.join(" ",phases));
         assertEquals("45",Eval2.eval(code,10));
     }
 
@@ -39,4 +39,18 @@ public class PhaseTest {
         CodeGen direct = new CodeGen(SRC).driver(Phase.Encoding,"x86_64_v2","SystemV");
         assertArrayEquals(bits,direct._encoding._bits.toByteArray());
     }
+
+    @Test public void testOptoRequiresIter() {
+        CodeGen code = new CodeGen(SRC).parse();
+        try {
+            code.opto();
+            fail("Opto must not implicitly run Iter");
+        } catch( AssertionError expected ) {
+            assertEquals("Cannot run Opto after Parse",expected.getMessage());
+        }
+        code.iter().opto();
+        assertEquals(Phase.Opto,code._phase);
+        code.driver(Phase.LocalSched);
+        assertEquals("45",Eval2.eval(code,10));
+    }
 }
diff --git a/src/test/java/com/seaofnodes/simple/SchedulerTest.java b/src/test/java/com/seaofnodes/simple/SchedulerTest.java
index ca211c60..6156700d 100644
--- a/src/test/java/com/seaofnodes/simple/SchedulerTest.java
+++ b/src/test/java/com/seaofnodes/simple/SchedulerTest.java
@@ -51,7 +51,7 @@ int i=v.f;
 if (arg) v.f=1;
 return i;
 """);
-        code.parse();//.iter().finalizeIR();
+        code.parse();//.iter().opto().iterPostOpto().finalizeIR();
         var eval = new Evaluator(code._stop);
         assertEquals(2L, eval.evaluate(1, 10));
     }
@@ -66,7 +66,7 @@ struct S {
 if(arg) v0.f=1;
 return v0;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         var eval = new Evaluator(code._stop);
         assertObj(eval.evaluate(0, 10), "S", 0L);
         assertObj(eval.evaluate(1, 10), "S", 1L);
@@ -85,7 +85,7 @@ i=v.f;
 if (arg) v.f=1;
 return i;
 """);
-        code.parse().iter().finalizeIR();
+        code.driver(CodeGen.Phase.FinalizeIR);
         var eval = new Evaluator(code._stop);
         assertEquals(2L, eval.evaluate(0, 10));
         assertEquals(2L, eval.evaluate(1, 10));
diff --git a/src/test/java/com/seaofnodes/simple/Simple.java b/src/test/java/com/seaofnodes/simple/Simple.java
index 9da0d71b..20d6fe71 100644
--- a/src/test/java/com/seaofnodes/simple/Simple.java
+++ b/src/test/java/com/seaofnodes/simple/Simple.java
@@ -16,6 +16,8 @@ public class Simple {
 
     static final int DUMP_AFTER_PARSE = 1<<Phase.Parse.ordinal();
     static final int DUMP_AFTER_ITER = 1<<Phase.Iter.ordinal();
+    static final int DUMP_AFTER_OPTO = 1<<Phase.Opto.ordinal();
+    static final int DUMP_AFTER_ITER_POST_OPTO = 1<<Phase.IterPostOpto.ordinal();
     static final int DUMP_AFTER_FINALIZE_IR = 1<<Phase.FinalizeIR.ordinal();
     static final int DUMP_AFTER_TYPE_CHECK = 1<<Phase.TypeCheck.ordinal();
     static final int DUMP_AFTER_LOOP_TREE = 1<<Phase.LoopTree.ordinal();
@@ -40,6 +42,8 @@ Options:
   --dump                   - dump final intermediate representation
   --dump-after-parse           - dump intermediate representation after parsing
   --dump-after-iter            - dump intermediate representation after Iter
+  --dump-after-opto            - dump intermediate representation after Opto
+  --dump-after-iter-post-opto  - dump intermediate representation after IterPostOpto
   --dump-after-finalize-ir     - dump intermediate representation after FinalizeIR
   --dump-after-type-check      - dump intermediate representation after type checking
   --dump-after-loop-tree       - dump intermediate representation after loop-tree construction
@@ -125,7 +129,9 @@ Options:
             case "--dump":                    dump |= DUMP_FINAL; break;
             case "--dump-after-parse":          dump |= DUMP_AFTER_PARSE; break;
             case "--dump-after-finalize-ir":    dump |= DUMP_AFTER_FINALIZE_IR; break;
+            case "--dump-after-iter-post-opto": dump |= DUMP_AFTER_ITER_POST_OPTO; break;
             case "--dump-after-iter":           dump |= DUMP_AFTER_ITER; break;
+            case "--dump-after-opto":           dump |= DUMP_AFTER_OPTO; break;
             case "--dump-after-type-check":     dump |= DUMP_AFTER_TYPE_CHECK; break;
             case "--dump-after-loop-tree":      dump |= DUMP_AFTER_LOOP_TREE; break;
             case "--dump-after-select":         dump |= DUMP_AFTER_SELECT; break;
@@ -204,7 +210,7 @@ Options:
             if ( !TestC.CPU_PORT.equals( cpu ) || !TestC.CALL_CONVENTION.equals( abi ) )
                 throw bad("cannot run code on not native target");
             String exe = TestC.OS.startsWith("Windows") ? base+".exe" : base;
-            String result = com.seaofnodes.simple.TestC.gcc(base+".o", null, null, true, exe);
+            String result = TestC.gcc(base+".o", null, null, true, exe);
             System.out.print(result);
         }
     }
diff --git a/src/test/java/com/seaofnodes/simple/SpillStats.java b/src/test/java/com/seaofnodes/simple/SpillStats.java
index 6af51b33..ad044a52 100644
--- a/src/test/java/com/seaofnodes/simple/SpillStats.java
+++ b/src/test/java/com/seaofnodes/simple/SpillStats.java
@@ -28,7 +28,8 @@ public class SpillStats extends RunListener {
 
     // The same native helpers serve old and new program cohorts.
     public static void recordNative(CodeGen code, String cpu, String abi) {
-        String cohort = ACTIVE!=null && ACTIVE._test.getTestClass()==Chapter23Test.class
+        String cohort = ACTIVE!=null && (ACTIVE._test.getTestClass()==Chapter24Test.class || ACTIVE._test.getTestClass()==Chapter24AllocTest.class)
+            ? "Chapter24" : ACTIVE!=null && ACTIVE._test.getTestClass()==Chapter23Test.class
             ? "Chapter23" : ACTIVE!=null && ACTIVE._test.getTestClass()==Chapter22Test.class
             ? "Chapter22" : "Chapter21";
         record(code,cohort,cpu,abi);
@@ -47,7 +48,7 @@ public class SpillStats extends RunListener {
     }
 
     public static void main(String[] args) throws ClassNotFoundException {
-        if( args.length==0 ) args = new String[]{"Chapter20Test","Chapter21Test","Chapter21AllocTest","Chapter22Test","Chapter23Test","Chapter23AllocTest","BrainFuckTest","MergeSortTest"};
+        if( args.length==0 ) args = new String[]{"Chapter20Test","Chapter21Test","Chapter21AllocTest","Chapter22Test","Chapter23Test","Chapter23AllocTest","Chapter24Test","Chapter24AllocTest","BrainFuckTest","MergeSortTest"};
         Class<?>[] tests = new Class<?>[args.length];
         for( int i=0; i<args.length; i++ )
             tests[i] = Class.forName("com.seaofnodes.simple."+args[i]);
diff --git a/src/test/java/com/seaofnodes/simple/TestArm64.java b/src/test/java/com/seaofnodes/simple/TestArm64.java
index a22063eb..086bf9c7 100644
--- a/src/test/java/com/seaofnodes/simple/TestArm64.java
+++ b/src/test/java/com/seaofnodes/simple/TestArm64.java
@@ -18,13 +18,19 @@ import static org.junit.Assert.assertEquals;
 
 public class TestArm64 {
     public static EvalArm64 build( String file, int arg, int spills, boolean print ) throws IOException {
-        return  build("src/test/java/com/seaofnodes/simple/progs",file, arg, spills, print);
+        String dir = "src/test/java/com/seaofnodes/simple/progs";
+        String src = Files.readString(Path.of(dir + "/"+file+".smp"));
+        return build(dir,src, file, arg, spills, print);
+    }
+
+    public static EvalArm64 build( String name, String src, int arg, int spills, boolean print ) throws IOException {
+        String dir = "src/test/java/com/seaofnodes/simple/progs";
+        return build(dir, src ,name, arg, spills, print);
     }
 
     // Compile and run a simple program
-    public static EvalArm64 build( String dir, String file, int arg, int spills, boolean print ) throws IOException {
+    public static EvalArm64 build( String dir, String src, String file, int arg, int spills, boolean print ) throws IOException {
         // Compile and export Simple
-        String src = Files.readString(Path.of(dir+"/"+file+".smp"));
         CodeGen code = new CheckedCodeGen(src).driver("arm", "SystemV",null);
         SpillStats.recordNative(code,"arm","SystemV");
         if( print ) { code.print_as_hex(); System.out.print(code.asm()); }
diff --git a/src/test/java/com/seaofnodes/simple/TestC.java b/src/test/java/com/seaofnodes/simple/TestC.java
index 2e61211a..3b3aabc0 100644
--- a/src/test/java/com/seaofnodes/simple/TestC.java
+++ b/src/test/java/com/seaofnodes/simple/TestC.java
@@ -41,14 +41,31 @@ public abstract class TestC {
         String src = Files.readString(Path.of(sfile));
         run(src,CALL_CONVENTION,arg, "",standalone? null: cfile,efile,"S",expected,spills);
     }
+
+    // link with c and also inline
+    public static void run(String src, String file, TypeInteger arg, String expected, int spills) throws IOException {
+            String dir = "src/test/java/com/seaofnodes/simple/progs";
+            String cfile = dir+"/"+file+".c";
+            String efile = "build/objs/"+file;
+            run(src, CALL_CONVENTION, arg, "", cfile, efile, "S", expected, spills);
+    }
+
     public static void run(String dir, String file, String expected, int spills ) throws IOException {
         run(dir, file,null, expected, spills, false);
     }
 
+    // Do not link with c file - no inline.
     public static void runS(String file, String expected, int spills ) throws IOException {
         run("src/test/java/com/seaofnodes/simple/progs", file, null, expected, spills, true);
     }
 
+
+    // Do not link with c file - just inline with source.
+    public static void runSF(String name, String src, TypeInteger arg, String expected, int spills ) throws IOException {
+        String efile = "build/objs/"+name;
+        run(src,CALL_CONVENTION,arg, "",null,efile,"S",expected,spills);
+    }
+
     public static void runS(String file, TypeInteger arg, String expected, int spills ) throws IOException {
         run("src/test/java/com/seaofnodes/simple/progs", file, arg, expected, spills, true);
     }
diff --git a/src/test/java/com/seaofnodes/simple/TestRisc5.java b/src/test/java/com/seaofnodes/simple/TestRisc5.java
index ace2a7ea..f55e7d0b 100644
--- a/src/test/java/com/seaofnodes/simple/TestRisc5.java
+++ b/src/test/java/com/seaofnodes/simple/TestRisc5.java
@@ -16,13 +16,19 @@ import static org.junit.Assert.*;
 public abstract class TestRisc5 {
 
     public static EvalRisc5 build( String file, int arg, int spills, boolean print ) throws IOException {
-        return build("src/test/java/com/seaofnodes/simple/progs",file, null, arg, spills, print);
+        String dir = "src/test/java/com/seaofnodes/simple/progs";
+        String src = Files.readString(Path.of(dir + "/"+file+".smp"));
+        return build(dir,src, file, null, arg, spills, print);
+    }
+
+    public static EvalRisc5 build( String name, String src, int arg, int spills, boolean print ) throws IOException {
+        String dir = "src/test/java/com/seaofnodes/simple/progs";
+        return build(dir, src ,name, null, arg, spills, print);
     }
 
     // Compile and run a simple program
-    public static EvalRisc5 build( String dir, String file, String main, int arg, int spills, boolean print ) throws IOException {
+    public static EvalRisc5 build( String dir, String src, String file, String main, int arg, int spills, boolean print ) throws IOException {
         // Compile and export Simple
-        String src = Files.readString(Path.of(dir+"/"+file+".smp"));
         CodeGen code = new CheckedCodeGen(src).driver("riscv", "SystemV",null);
         SpillStats.recordNative(code,"riscv","SystemV");
         if( print ) { code.print_as_hex(); System.out.print(code.asm()); }
diff --git a/src/test/java/com/seaofnodes/simple/TypeTest.java b/src/test/java/com/seaofnodes/simple/TypeTest.java
index b21af9ee..fd3fea9d 100644
--- a/src/test/java/com/seaofnodes/simple/TypeTest.java
+++ b/src/test/java/com/seaofnodes/simple/TypeTest.java
@@ -7,6 +7,22 @@ import static org.junit.Assert.assertSame;
 
 public class TypeTest {
 
+    // Removing zero must not reset the widening history of a remaining range.
+    @Test public void testNonZeroWidening() {
+        for( byte widen=0; widen<=3; widen++ ) {
+            TypeInteger pos = TypeInteger.make(0,255,widen).nonZero();
+            TypeInteger neg = TypeInteger.make(-255,0,widen).nonZero();
+            Assert.assertEquals("positive range widening",widen,pos._widen);
+            Assert.assertEquals("negative range widening",widen,neg._widen);
+            assertSame(TypeInteger.make(1,255,widen),pos);
+            assertSame(TypeInteger.make(-255,-1,widen),neg);
+            // Singleton ranges retain their widening level too.
+            assertSame(TypeInteger.make(1,1,widen),TypeInteger.make(0,1,widen).nonZero());
+            assertSame(TypeInteger.make(-1,-1,widen),TypeInteger.make(-1,0,widen).nonZero());
+        }
+        Assert.assertNull(TypeInteger.ZERO.nonZero());
+    }
+
     // Struct hashes omit field types, so interning compares unlike leaf kinds.
     @Test
     public void testCyclicLeafKinds() {
diff --git a/src/test/java/com/seaofnodes/simple/codegen/RegAllocTestSupport.java b/src/test/java/com/seaofnodes/simple/codegen/RegAllocTestSupport.java
index b60adce7..0304c6a1 100644
--- a/src/test/java/com/seaofnodes/simple/codegen/RegAllocTestSupport.java
+++ b/src/test/java/com/seaofnodes/simple/codegen/RegAllocTestSupport.java
@@ -249,6 +249,33 @@ public class RegAllocTestSupport {
         assertFalse("A fixed definition clobbers even before coloring",uncolored.sameBlockNoClobber(copy));
     }
 
+    public static void coldLoopSelfConflict() {
+        for( boolean phiConflict : new boolean[]{false,true} ) {
+            CodeGen code = graph();
+            RegAlloc alloc = new RegAlloc(code);
+            Op init = new Op(A,null,null,false,code._start);
+            LoopNode loop = new LoopNode(null,code._start);
+            PhiNode phi = new PhiNode("loop",TypeInteger.BOT,loop,init,null);
+            Op back = new Op(A,A,null,false,loop,phi);
+            phi.setDef(2,back);
+            Op use = new Op(null,A,null,false,loop,phi);
+            loop.setDef(2,loop);
+            LRG lrg = alloc.newLRG(phi);
+            lrg._mask = A;
+            alloc.union(lrg,init); alloc.union(lrg,back);
+            lrg.selfConflict(back);
+            if( phiConflict ) lrg.selfConflict(phi);
+            assertTrue(alloc.splitSelfConflict((byte)0,lrg));
+            assertSame(phi,use.in(1)); // First try leaves the hot definition alone.
+            assertSame(back,phi.in(2));
+            if( phiConflict ) assertTrue(phi.in(1) instanceof SplitNode);
+            // Even if the first attempt made no graph change, retry must split.
+            assertTrue(alloc.splitSelfConflict((byte)1,lrg));
+            assertTrue(phi.in(2) instanceof SplitNode);
+            if( phiConflict ) assertTrue(use.in(1) instanceof SplitNode);
+        }
+    }
+
     public static void copyForward() throws Exception {
         // Forwarding, fixed operand, two-address tie, intervening clobber,
         // another user, and a scheduling-only edge.
diff --git a/src/test/java/com/seaofnodes/simple/evaluator/Scheduler.java b/src/test/java/com/seaofnodes/simple/evaluator/Scheduler.java
index fee0f2a8..c837bd6f 100644
--- a/src/test/java/com/seaofnodes/simple/evaluator/Scheduler.java
+++ b/src/test/java/com/seaofnodes/simple/evaluator/Scheduler.java
@@ -594,7 +594,7 @@ public class Scheduler {
      * @param start The start node
      * @return The final schedule.
      */
-    public static Scheduler.Block schedule(StartNode start) {
+    public static Block schedule(StartNode start) {
         var scheduler = new Scheduler();
         scheduler.doMarkAlive(start);
         scheduler.doBuildCTF(start);
diff --git a/src/test/java/com/seaofnodes/simple/fuzzer/Fuzzer.java b/src/test/java/com/seaofnodes/simple/fuzzer/Fuzzer.java
index a3112d55..af4305c0 100644
--- a/src/test/java/com/seaofnodes/simple/fuzzer/Fuzzer.java
+++ b/src/test/java/com/seaofnodes/simple/fuzzer/Fuzzer.java
@@ -133,7 +133,7 @@ public class Fuzzer {
             double parse_nop_ratio = (double)parse_nops/parse_peeps;
             double parse_peeps_per_node = (double)parse_peeps/nids;
 
-            code.iter().finalizeIR();
+            code.iter().opto().iterPostOpto().finalizeIR();
             int iter_peeps= code._iter_cnt;
             int iter_nops = code._iter_nop_cnt;
             double iter_nop_ratio = (double)iter_nops/iter_peeps;
diff --git a/src/test/java/com/seaofnodes/simple/fuzzer/Reducer.java b/src/test/java/com/seaofnodes/simple/fuzzer/Reducer.java
index 856e6a24..f6e12e11 100644
--- a/src/test/java/com/seaofnodes/simple/fuzzer/Reducer.java
+++ b/src/test/java/com/seaofnodes/simple/fuzzer/Reducer.java
@@ -174,4 +174,4 @@ public class Reducer {
         });
     }
 
-}
+}
\ No newline at end of file
diff --git a/src/test/java/com/seaofnodes/simple/fuzzer/ScriptGenerator.java b/src/test/java/com/seaofnodes/simple/fuzzer/ScriptGenerator.java
index 6ec066e9..20815d5d 100644
--- a/src/test/java/com/seaofnodes/simple/fuzzer/ScriptGenerator.java
+++ b/src/test/java/com/seaofnodes/simple/fuzzer/ScriptGenerator.java
@@ -440,7 +440,7 @@ public class ScriptGenerator {
         int idx = random.nextInt(forwardStructs.size()+10);
         TypeStruct struct;
         if (idx < 10) {
-        var name = getStructName();
+            var name = getStructName();
             struct = new TypeStruct(name);
             forwardStructs.add(struct);
         } else {
@@ -937,4 +937,4 @@ public class ScriptGenerator {
         else sb.append(v.name);
     }
 
-}
+}
\ No newline at end of file
diff --git a/src/test/java/com/seaofnodes/simple/progs/and1.smp b/src/test/java/com/seaofnodes/simple/progs/and1.smp
deleted file mode 100644
index ef4c904f..00000000
--- a/src/test/java/com/seaofnodes/simple/progs/and1.smp
+++ /dev/null
@@ -1,10 +0,0 @@
-// -*- mode: java;  -*-
-int a = 1;
-int b = 1;
-
-if(a && b) {
-    sys.io.p("And");
-} else {
-    sys.io.p("Or");
-}
-return 0;
diff --git a/src/test/java/com/seaofnodes/simple/progs/and2.smp b/src/test/java/com/seaofnodes/simple/progs/and2.smp
deleted file mode 100644
index 2a463c94..00000000
--- a/src/test/java/com/seaofnodes/simple/progs/and2.smp
+++ /dev/null
@@ -1,16 +0,0 @@
-// -*- mode: java;  -*-
-int a = 1;
-int b = 1;
-
-int x=1;
-int y=1;
-int z=0;
-
-int g = x++ && y++ && z++;
-
-if(x == 2 && y == 2 && z == 1 && g == 0) {
-    sys.io.p("Effected");
-} else {
-    sys.io.p("Not effected");
-}
-return 0;
diff --git a/src/test/java/com/seaofnodes/simple/progs/and3.smp b/src/test/java/com/seaofnodes/simple/progs/and3.smp
deleted file mode 100644
index aadbdfed..00000000
--- a/src/test/java/com/seaofnodes/simple/progs/and3.smp
+++ /dev/null
@@ -1,14 +0,0 @@
-// -*- mode: java;  -*-
-int a = 1;
-int b = 1;
-
-var sq = { int x ->
-    x*x;
-};
-
-if(a && sq(0)) {
-    sys.io.p("And");
-} else {
-    sys.io.p("Or");
-}
-return 0;
diff --git a/src/test/java/com/seaofnodes/simple/progs/antiDep1.smp b/src/test/java/com/seaofnodes/simple/progs/antiDep1.smp
deleted file mode 100644
index 52bfe29b..00000000
--- a/src/test/java/com/seaofnodes/simple/progs/antiDep1.smp
+++ /dev/null
@@ -1,11 +0,0 @@
-// -*- mode: java;  -*-
-struct S { int f; };
-var v0 = new S;
-!S? !v1;
-if (arg) v1 = new S;
-if (v1) {
-    v0.f = v1.f;
-} else {
-    v0.f = 2;
-}
-return v0;
diff --git a/src/test/java/com/seaofnodes/simple/progs/brain_fuck.smp b/src/test/java/com/seaofnodes/simple/progs/brain_fuck.smp
deleted file mode 100644
index ed90cb84..00000000
--- a/src/test/java/com/seaofnodes/simple/progs/brain_fuck.smp
+++ /dev/null
@@ -1,46 +0,0 @@
-// -*- mode: java;  -*-
-val brain_fuck = { ->
-    u8[] !program = new u8[106];program[0] = 43;program[1] = 43;program[2] = 43;program[3] = 43;program[4] = 43;program[5] = 43;program[6] = 43;program[7] = 43;program[8] = 91;program[9] = 62;program[10] = 43;program[11] = 43;program[12] = 43;program[13] = 43;program[14] = 91;program[15] = 62;program[16] = 43;program[17] = 43;program[18] = 62;program[19] = 43;program[20] = 43;program[21] = 43;program[22] = 62;program[23] = 43;program[24] = 43;program[25] = 43;program[26] = 62;program[27] = 43;program[28] = 60;program[29] = 60;program[30] = 60;program[31] = 60;program[32] = 45;program[33] = 93;program[34] = 62;program[35] = 43;program[36] = 62;program[37] = 43;program[38] = 62;program[39] = 45;program[40] = 62;program[41] = 62;program[42] = 43;program[43] = 91;program[44] = 60;program[45] = 93;program[46] = 60;program[47] = 45;program[48] = 93;program[49] = 62;program[50] = 62;program[51] = 46;program[52] = 62;program[53] = 45;program[54] = 45;program[55] = 45;program[56] = 46;program[57] = 43;program[58] = 43;program[59] = 43;program[60] = 43;program[61] = 43;program[62] = 43;program[63] = 43;program[64] = 46;program[65] = 46;program[66] = 43;program[67] = 43;program[68] = 43;program[69] = 46;program[70] = 62;program[71] = 62;program[72] = 46;program[73] = 60;program[74] = 45;program[75] = 46;program[76] = 60;program[77] = 46;program[78] = 43;program[79] = 43;program[80] = 43;program[81] = 46;program[82] = 45;program[83] = 45;program[84] = 45;program[85] = 45;program[86] = 45;program[87] = 45;program[88] = 46;program[89] = 45;program[90] = 45;program[91] = 45;program[92] = 45;program[93] = 45;program[94] = 45;program[95] = 45;program[96] = 45;program[97] = 46;program[98] = 62;program[99] = 62;program[100] = 43;program[101] = 46;program[102] = 62;program[103] = 43;program[104] = 43;program[105] = 46;
-    int d = 0;
-    u8[] !output = new u8[0];
-    u8[] !data = new u8[100];
-
-    for( int pc = 0; pc < program#; pc++ ) {
-        var command = program[pc];
-        if (command == 62) {
-            d++;
-        } else if (command == 60) {
-            d--;
-        } else if (command == 43) {
-            data[d]++;
-        } else if (command == 45) {
-            data[d]--;
-        } else if (command == 46) {
-            // Output a byte; increase the output array size
-            var old = output;
-            output = new u8[output# + 1];
-            for( int i = 0; i < old#; i++ )
-                output[i] = old[i];
-            output[old#] = data[d]; // Add the extra byte on the end
-        } else if (command == 44) {
-            data[d] = 42;
-        } else if (command == 91) {
-            if (data[d] == 0) {
-                for( int d = 1; d > 0; ) {
-                    command = program[++pc];
-                    if (command == 91) d++;
-                    if (command == 93) d--;
-                }
-            }
-        } else if (command == 93) {
-            if (data[d]) {
-                for( int d = 1; d > 0; ) {
-                    command = program[--pc];
-                    if (command == 93) d++;
-                    if (command == 91) d--;
-                }
-            }
-        }
-    }
-    return output;
-};
diff --git a/src/test/java/com/seaofnodes/simple/progs/echo.smp b/src/test/java/com/seaofnodes/simple/progs/echo.smp
deleted file mode 100644
index 8eafd73b..00000000
--- a/src/test/java/com/seaofnodes/simple/progs/echo.smp
+++ /dev/null
@@ -1,3 +0,0 @@
-// -*- mode: java;  -*-
-// Echo stdin to stdout.
-return sys.io.p( sys.io.stdin() );
diff --git a/src/test/java/com/seaofnodes/simple/progs/fib.smp b/src/test/java/com/seaofnodes/simple/progs/fib.smp
deleted file mode 100644
index 1512541b..00000000
--- a/src/test/java/com/seaofnodes/simple/progs/fib.smp
+++ /dev/null
@@ -1,11 +0,0 @@
-// -*- mode: java;  -*-
-val fib = {int n ->
-    int f1=1;
-    int f2=1;
-    while( n-- > 1 ){
-        int temp = f1+f2;
-        f1=f2;
-        f2=temp;
-    }
-    return f2;
-};
\ No newline at end of file
diff --git a/src/test/java/com/seaofnodes/simple/progs/helloWorld.smp b/src/test/java/com/seaofnodes/simple/progs/helloWorld.smp
deleted file mode 100644
index 07ff935f..00000000
--- a/src/test/java/com/seaofnodes/simple/progs/helloWorld.smp
+++ /dev/null
@@ -1,3 +0,0 @@
-// -*- mode: java;  -*-
-sys.io.p("Hello, World!");
-return 0;
diff --git a/src/test/java/com/seaofnodes/simple/progs/large.smp b/src/test/java/com/seaofnodes/simple/progs/large.smp
deleted file mode 100644
index 73271e66..00000000
--- a/src/test/java/com/seaofnodes/simple/progs/large.smp
+++ /dev/null
@@ -1,5344 +0,0 @@
-
-struct stbi_io_callbacks {
-    { i64 u8[] int -> int } read = "C";    // fill 'data' with 'size' bytes.  return number of bytes actually read
-    { i64 int -> int } skip = "C"; // skip the next 'n' bytes, or 'unget' the last -n bytes if negative
-    { i64 -> int } eof = "C";  // returns nonzero if we are at end of file/data
-};
-
-struct stbi__context {
-    u32 img_x, img_y;
-    int img_n, img_out_n;
-
-    !stbi_io_callbacks !io;
-    u8[]io_user_data;
-
-    int read_from_callbacks;
-    int buflen;
-    u8[] buffer_start;
-    int callback_already_read;
-
-    u8[] img_buffer;
-    int img_buffer_end;
-    u8[] img_buffer_original;
-    int img_buffer_original_end;
-};
-
-{ stbi__context -> u8 } stbi__get8 = "C";
-
-val sample = { !stbi__context !s, int pal_len ->
-    var palette = new u8[1024];
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-    for (int i=0; i < pal_len; ++i) {
-        palette[i*4+3] = 0;
-
-        palette[i*4+0] = stbi__get8(s);
-        palette[i*4+1] = stbi__get8(s);
-        palette[i*4+2] = stbi__get8(s);
-        palette[i*4+3] = 255;
-        for (int j=0; j < pal_len; ++j) {
-            palette[j*4+3] = 0;
-
-            palette[j*4+0] = stbi__get8(s);
-            palette[j*4+1] = stbi__get8(s);
-            palette[j*4+2] = stbi__get8(s);
-            palette[j*4+3] = 255;
-        }
-    }
-
-    return palette;
-};
diff --git a/src/test/java/com/seaofnodes/simple/progs/loop2.smp b/src/test/java/com/seaofnodes/simple/progs/loop2.smp
deleted file mode 100644
index 01ec827e..00000000
--- a/src/test/java/com/seaofnodes/simple/progs/loop2.smp
+++ /dev/null
@@ -1,10 +0,0 @@
-// -*- mode: java;  -*-
-int i = 0;
-while(true) {
-    i += 1;
-    if( i==0 ) continue;
-    if( i==1 ) continue;
-    if( i==2 ) break;
-    continue;
-}
-return i;
diff --git a/src/test/java/com/seaofnodes/simple/progs/or1.smp b/src/test/java/com/seaofnodes/simple/progs/or1.smp
deleted file mode 100644
index f5f526c3..00000000
--- a/src/test/java/com/seaofnodes/simple/progs/or1.smp
+++ /dev/null
@@ -1,12 +0,0 @@
-// -*- mode: java;  -*-
-int a = 1;
-int b = 0;
-
-if(a++ || b++ ) {
-    if(b == 0 && a == 2) {
-        sys.io.p("Or");
-    }
-} else{
-    sys.io.p("And");
-}
-return 0;
diff --git a/src/test/java/com/seaofnodes/simple/progs/or2.smp b/src/test/java/com/seaofnodes/simple/progs/or2.smp
deleted file mode 100644
index ac688b5a..00000000
--- a/src/test/java/com/seaofnodes/simple/progs/or2.smp
+++ /dev/null
@@ -1,23 +0,0 @@
-// -*- mode: java;  -*-
-int a = 1;
-int b = 1;
-
-int x = -1;
-int y=1;
-int z= -1;
-
-int g = x++ || y++ || z++;
-
-int switch = 0;
-if(x == 4 || y == 4 || z == 4) {
-    switch = -1;
-} else {
-    switch = 1;
-}
-int cd = 1;
-if((x == 0 && y == 1 && z==-1) && switch && g) {
-    sys.io.p("Effected");
-} else {
-    sys.io.p("Not effected");
-}
-return 0;
diff --git a/src/test/java/com/seaofnodes/simple/progs/person.smp b/src/test/java/com/seaofnodes/simple/progs/person.smp
deleted file mode 100644
index 94e2cdde..00000000
--- a/src/test/java/com/seaofnodes/simple/progs/person.smp
+++ /dev/null
@@ -1,9 +0,0 @@
-// -*-java-*-
-struct Person {
-    i32 age;
-};
-
-val fcn = { !Person?[] ps, int x ->
-    if( ps[x] )
-        ps[x].age++;
-};
\ No newline at end of file
diff --git a/src/test/java/com/seaofnodes/simple/progs/print.smp b/src/test/java/com/seaofnodes/simple/progs/print.smp
deleted file mode 100644
index 3bb86268..00000000
--- a/src/test/java/com/seaofnodes/simple/progs/print.smp
+++ /dev/null
@@ -1,8 +0,0 @@
-int x = 1;
-
-int y = 2;
-if(x == 1) {
-y = 1;
-}
-
-return y;
\ No newline at end of file
diff --git a/src/test/java/com/seaofnodes/simple/progs/ptrand.smp b/src/test/java/com/seaofnodes/simple/progs/ptrand.smp
deleted file mode 100644
index 8b8af571..00000000
--- a/src/test/java/com/seaofnodes/simple/progs/ptrand.smp
+++ /dev/null
@@ -1,10 +0,0 @@
-struct S { !S? !fld; };
-
-val ptr = arg == 1 ? null : new S{fld = arg==1 ? null : new S{fld = null;};};
-if( ptr && ptr.fld ) {
-  sys.io.p("true");
-} else {
-  sys.io.p("false");
-}
-
-return 0;
diff --git a/src/test/java/com/seaofnodes/simple/progs/riscv_load.smp b/src/test/java/com/seaofnodes/simple/progs/riscv_load.smp
deleted file mode 100644
index 1a36fb99..00000000
--- a/src/test/java/com/seaofnodes/simple/progs/riscv_load.smp
+++ /dev/null
@@ -1,4 +0,0 @@
-struct Person { i32 age;};
-!Person !p = new Person;
-p.age += arg;
-return p.age;
diff --git a/src/test/java/com/seaofnodes/simple/progs/sext_str_1.smp b/src/test/java/com/seaofnodes/simple/progs/sext_str_1.smp
deleted file mode 100644
index 57b37477..00000000
--- a/src/test/java/com/seaofnodes/simple/progs/sext_str_1.smp
+++ /dev/null
@@ -1,4 +0,0 @@
-struct Person {i64 age;}
-!Person !p  = new Person;
-p.age += arg;
-return p.age;
diff --git a/src/test/java/com/seaofnodes/simple/progs/sext_str_fold_away.smp b/src/test/java/com/seaofnodes/simple/progs/sext_str_fold_away.smp
deleted file mode 100644
index 7d7fdce7..00000000
--- a/src/test/java/com/seaofnodes/simple/progs/sext_str_fold_away.smp
+++ /dev/null
@@ -1,5 +0,0 @@
-// Should fold away sign extend
-struct Person { i8 age;};
-!Person !p = new Person;
-p.age = (arg<<48)>>48;
-return 0;
\ No newline at end of file
diff --git a/src/test/java/com/seaofnodes/simple/progs/sext_str_not_fold_away.smp b/src/test/java/com/seaofnodes/simple/progs/sext_str_not_fold_away.smp
deleted file mode 100644
index 4d6ca3a3..00000000
--- a/src/test/java/com/seaofnodes/simple/progs/sext_str_not_fold_away.smp
+++ /dev/null
@@ -1,4 +0,0 @@
-struct Person { i32 age;};
-!Person !p = new Person;
-p.age = (arg<<17)>>17;
-return 0;
\ No newline at end of file
diff --git a/src/test/java/com/seaofnodes/simple/progs/sext_str_not_fold_away_2.smp b/src/test/java/com/seaofnodes/simple/progs/sext_str_not_fold_away_2.smp
deleted file mode 100644
index 5c96c060..00000000
--- a/src/test/java/com/seaofnodes/simple/progs/sext_str_not_fold_away_2.smp
+++ /dev/null
@@ -1,4 +0,0 @@
-struct Person { i32 age;};
-!Person !p = new Person;
-p.age = (arg<<48)>>48;
-return 0;
\ No newline at end of file
diff --git a/src/test/java/com/seaofnodes/simple/progs/sieve.smp b/src/test/java/com/seaofnodes/simple/progs/sieve.smp
deleted file mode 100644
index 569dbb96..00000000
--- a/src/test/java/com/seaofnodes/simple/progs/sieve.smp
+++ /dev/null
@@ -1,31 +0,0 @@
-// -*- mode: java;  -*-
-val sieve = { int N ->
-    // The main Sieve array
-    bool[] !ary = new bool[N];
-    // The primes less than N
-    u32[] !primes = new u32[N>>1];
-    // Number of primes so far, searching at index p
-    int nprimes = 0, p=2;
-    // Find primes while p^2 < N
-    while( p*p < N ) {
-        // skip marked non-primes
-        while( ary[p] ) p++;
-        // p is now a prime
-        primes[nprimes++] = p;
-        // Mark out the rest non-primes
-        for( int i = p + p; i < ary#; i+= p )
-            ary[i] = true;
-        p++;
-    }
-
-    // Now just collect the remaining primes, no more marking
-    for( ; p < N; p++ )
-        if( !ary[p] )
-            primes[nprimes++] = p;
-
-    // Copy/shrink the result array
-    u32[] !rez = new u32[nprimes];
-    for( int j=0; j < nprimes; j++ )
-        rez[j] = primes[j];
-    return rez;
-};
diff --git a/src/test/java/com/seaofnodes/simple/progs/sort.smp b/src/test/java/com/seaofnodes/simple/progs/sort.smp
deleted file mode 100644
index ae3f4f23..00000000
--- a/src/test/java/com/seaofnodes/simple/progs/sort.smp
+++ /dev/null
@@ -1,38 +0,0 @@
-// -*- mode: java;  -*-
-// based on the top-down version from https://en.wikipedia.org/wiki/Merge_sort
-
-val merge_sort = { int[] a ->
-    int[] !b = new int[a#];
-    copy_array (a, 0, a#, b);
-    split_merge(a, 0, a#, b);
-};
-
-val split_merge = { int[] b, int begin, int end, int[] a ->
-    if (end - begin <= 1)
-        return 0;
-    int middle = (end + begin) / 2;
-    split_merge(a, begin, middle, b);
-    split_merge(a, middle, end, b);
-    merge(b, begin, middle, end, a);
-    return 0;
-};
-
-val merge = { int[] b, int begin, int middle, int end, int[] a ->
-    int i = begin, j = middle;
-
-    for (int k = begin; k < end; k++) {
-        // && and ||
-        bool cond = false;
-        if (i < middle) {
-            if (j >= end)          cond = true;
-            else if (a[i] <= a[j]) cond = true;
-        }
-        if (cond) b[k] = a[i++];
-        else      b[k] = a[j++];
-    }
-};
-
-val copy_array = { int[] a, int begin, int end, int[] b ->
-    for (int k = begin; k < end; k++)
-        b[k] = a[k];
-};
diff --git a/src/test/java/com/seaofnodes/simple/progs/stacked_r_10x.c b/src/test/java/com/seaofnodes/simple/progs/stacked_r_10x.c
new file mode 100644
index 00000000..d44d5387
--- /dev/null
+++ b/src/test/java/com/seaofnodes/simple/progs/stacked_r_10x.c
@@ -0,0 +1,13 @@
+#include <stdio.h>
+#include <stdbool.h>
+#include <stdlib.h>
+
+__attribute__ ((CALL_CONV))
+extern int stack10(int x);
+
+int main() {
+int result = stack10(0);
+
+printf("%d", result);
+return 0;
+}
\ No newline at end of file
diff --git a/src/test/java/com/seaofnodes/simple/progs/stacked_r_11x.c b/src/test/java/com/seaofnodes/simple/progs/stacked_r_11x.c
new file mode 100644
index 00000000..d71979d1
--- /dev/null
+++ b/src/test/java/com/seaofnodes/simple/progs/stacked_r_11x.c
@@ -0,0 +1,13 @@
+#include <stdio.h>
+#include <stdbool.h>
+#include <stdlib.h>
+
+__attribute__ ((CALL_CONV))
+extern int stack11(int x);
+
+int main() {
+int result = stack11(1);
+
+printf("%d", result);
+return 0;
+}
\ No newline at end of file
diff --git a/src/test/java/com/seaofnodes/simple/progs/stacked_r_12x.c b/src/test/java/com/seaofnodes/simple/progs/stacked_r_12x.c
new file mode 100644
index 00000000..a4e425cb
--- /dev/null
+++ b/src/test/java/com/seaofnodes/simple/progs/stacked_r_12x.c
@@ -0,0 +1,13 @@
+#include <stdio.h>
+#include <stdbool.h>
+#include <stdlib.h>
+
+__attribute__ ((CALL_CONV))
+extern int stack12(int x);
+
+int main() {
+int result = stack12(0);
+
+printf("%d", result);
+return 0;
+}
\ No newline at end of file
diff --git a/src/test/java/com/seaofnodes/simple/progs/stacked_r_13x.c b/src/test/java/com/seaofnodes/simple/progs/stacked_r_13x.c
new file mode 100644
index 00000000..a3a51d0e
--- /dev/null
+++ b/src/test/java/com/seaofnodes/simple/progs/stacked_r_13x.c
@@ -0,0 +1,13 @@
+#include <stdio.h>
+#include <stdbool.h>
+#include <stdlib.h>
+
+__attribute__ ((CALL_CONV))
+extern int stack13(int x);
+
+int main() {
+int result = stack13(0);
+
+printf("%d", result);
+return 0;
+}
\ No newline at end of file
diff --git a/src/test/java/com/seaofnodes/simple/progs/stacked_r_9x.c b/src/test/java/com/seaofnodes/simple/progs/stacked_r_9x.c
new file mode 100644
index 00000000..4f93ba24
--- /dev/null
+++ b/src/test/java/com/seaofnodes/simple/progs/stacked_r_9x.c
@@ -0,0 +1,13 @@
+#include <stdio.h>
+#include <stdbool.h>
+#include <stdlib.h>
+
+__attribute__ ((CALL_CONV))
+extern int stack9(int x);
+
+int main() {
+int result = stack9(0);
+
+printf("%d", result);
+return 0;
+}
\ No newline at end of file
diff --git a/src/test/java/com/seaofnodes/simple/progs/store_peep.smp b/src/test/java/com/seaofnodes/simple/progs/store_peep.smp
deleted file mode 100644
index c3feddd5..00000000
--- a/src/test/java/com/seaofnodes/simple/progs/store_peep.smp
+++ /dev/null
@@ -1,3 +0,0 @@
-i64 a = 123456789012345;
-i32 b = a; // truncate high order bits
-return b;
\ No newline at end of file
-- 
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