diff --git a/src/dk/camelot64/kickc/CompileLog.java b/src/dk/camelot64/kickc/CompileLog.java
index 805e27082..02a112573 100644
--- a/src/dk/camelot64/kickc/CompileLog.java
+++ b/src/dk/camelot64/kickc/CompileLog.java
@@ -12,6 +12,7 @@ public class CompileLog {
    public void append(String msg) {
       log.append(msg);
       log.append("\n");
+      //System.out.printf(msg+"\n");
    }
 
    public StringBuilder getLog() {
diff --git a/src/dk/camelot64/kickc/Compiler.java b/src/dk/camelot64/kickc/Compiler.java
index 5e994cdc2..9027ab2c1 100644
--- a/src/dk/camelot64/kickc/Compiler.java
+++ b/src/dk/camelot64/kickc/Compiler.java
@@ -43,113 +43,131 @@ public class Compiler {
       }
    }
 
-   public CompilationResult compile(final CharStream input) throws IOException {
+   public CompilationResult compile(final CharStream input) {
       CompileLog log = new CompileLog();
-      log.append(input.toString());
-      KickCLexer lexer = new KickCLexer(input);
-      KickCParser parser = new KickCParser(new CommonTokenStream(lexer));
-      parser.setBuildParseTree(true);
-      parser.addErrorListener(new BaseErrorListener() {
-         @Override
-         public void syntaxError(Recognizer<?, ?> recognizer, Object offendingSymbol, int line, int charPositionInLine, String msg, RecognitionException e) {
-            throw new RuntimeException("Error parsing  file "+input.getSourceName()+"\n - Line: "+line+"\n - Message: "+msg);
-         }
-      });
-      KickCParser.FileContext file = parser.file();
-      Pass1GenerateStatementSequence pass1GenerateStatementSequence = new Pass1GenerateStatementSequence(log);
-      pass1GenerateStatementSequence.generate(file);
-      StatementSequence statementSequence = pass1GenerateStatementSequence.getSequence();
-      Scope programScope = pass1GenerateStatementSequence.getProgramScope();
-      Pass1TypeInference pass1TypeInference = new Pass1TypeInference();
-      pass1TypeInference.inferTypes(statementSequence, programScope);
+      try {
+         log.append(input.toString());
+         KickCLexer lexer = new KickCLexer(input);
+         KickCParser parser = new KickCParser(new CommonTokenStream(lexer));
+         parser.setBuildParseTree(true);
+         parser.addErrorListener(new BaseErrorListener() {
+            @Override
+            public void syntaxError(
+                  Recognizer<?, ?> recognizer,
+                  Object offendingSymbol,
+                  int line,
+                  int charPositionInLine,
+                  String msg,
+                  RecognitionException e) {
+               throw new RuntimeException("Error parsing  file " + input.getSourceName() + "\n - Line: " + line + "\n - Message: " + msg);
+            }
+         });
+         KickCParser.FileContext file = parser.file();
+         Pass1GenerateStatementSequence pass1GenerateStatementSequence = new Pass1GenerateStatementSequence(log);
+         pass1GenerateStatementSequence.generate(file);
+         StatementSequence statementSequence = pass1GenerateStatementSequence.getSequence();
+         Scope programScope = pass1GenerateStatementSequence.getProgramScope();
+         Pass1TypeInference pass1TypeInference = new Pass1TypeInference();
+         pass1TypeInference.inferTypes(statementSequence, programScope);
 
-      log.append("PROGRAM");
-      log.append(statementSequence.toString());
-      log.append("SYMBOLS");
-      log.append(programScope.getSymbolTableContents());
+         log.append("PROGRAM");
+         log.append(statementSequence.toString());
+         log.append("SYMBOLS");
+         log.append(programScope.getSymbolTableContents());
 
-      Pass1GenerateControlFlowGraph pass1GenerateControlFlowGraph = new Pass1GenerateControlFlowGraph(programScope);
-      ControlFlowGraph controlFlowGraph = pass1GenerateControlFlowGraph.generate(statementSequence);
-      log.append("INITIAL CONTROL FLOW GRAPH");
-      log.append(controlFlowGraph.toString());
+         Pass1GenerateControlFlowGraph pass1GenerateControlFlowGraph = new Pass1GenerateControlFlowGraph(programScope);
+         ControlFlowGraph controlFlowGraph = pass1GenerateControlFlowGraph.generate(statementSequence);
+         log.append("INITIAL CONTROL FLOW GRAPH");
+         log.append(controlFlowGraph.toString());
 
-      Pass1ProcedureCallParameters pass1ProcedureCallParameters =
-            new Pass1ProcedureCallParameters(programScope, controlFlowGraph);
-      controlFlowGraph = pass1ProcedureCallParameters.generate();
-      log.append("CONTROL FLOW GRAPH WITH ASSIGNMENT CALL");
-      log.append(controlFlowGraph.toString());
+         Pass1ProcedureCallParameters pass1ProcedureCallParameters =
+               new Pass1ProcedureCallParameters(programScope, controlFlowGraph);
+         controlFlowGraph = pass1ProcedureCallParameters.generate();
+         log.append("CONTROL FLOW GRAPH WITH ASSIGNMENT CALL");
+         log.append(controlFlowGraph.toString());
 
-      Pass1GenerateSingleStaticAssignmentForm pass1GenerateSingleStaticAssignmentForm =
-            new Pass1GenerateSingleStaticAssignmentForm(log, programScope, controlFlowGraph);
-      pass1GenerateSingleStaticAssignmentForm.generate();
+         Pass1GenerateSingleStaticAssignmentForm pass1GenerateSingleStaticAssignmentForm =
+               new Pass1GenerateSingleStaticAssignmentForm(log, programScope, controlFlowGraph);
+         pass1GenerateSingleStaticAssignmentForm.generate();
 
-      log.append("CONTROL FLOW GRAPH SSA");
-      log.append(controlFlowGraph.toString());
+         log.append("CONTROL FLOW GRAPH SSA");
+         log.append(controlFlowGraph.toString());
 
-      Pass1ProcedureCallsReturnValue pass1ProcedureCallsReturnValue =
-            new Pass1ProcedureCallsReturnValue(programScope, controlFlowGraph);
-      controlFlowGraph = pass1ProcedureCallsReturnValue.generate();
-      log.append("CONTROL FLOW GRAPH WITH ASSIGNMENT CALL & RETURN");
-      log.append(controlFlowGraph.toString());
+         Pass1ProcedureCallsReturnValue pass1ProcedureCallsReturnValue =
+               new Pass1ProcedureCallsReturnValue(programScope, controlFlowGraph);
+         controlFlowGraph = pass1ProcedureCallsReturnValue.generate();
+         log.append("CONTROL FLOW GRAPH WITH ASSIGNMENT CALL & RETURN");
+         log.append(controlFlowGraph.toString());
 
-      List<Pass2SsaOptimization> optimizations = new ArrayList<>();
-      optimizations.add(new Pass2CullEmptyBlocks(controlFlowGraph, programScope, log));
-      optimizations.add(new Pass2ConstantPropagation(controlFlowGraph, programScope, log));
-      optimizations.add(new Pass2ConstantAdditionElimination(controlFlowGraph, programScope, log));
-      optimizations.add(new Pass2AliasElimination(controlFlowGraph, programScope, log));
-      optimizations.add(new Pass2RedundantPhiElimination(controlFlowGraph, programScope, log));
-      optimizations.add(new Pass2SelfPhiElimination(controlFlowGraph, programScope, log));
-      optimizations.add(new Pass2ConditionalJumpSimplification(controlFlowGraph, programScope, log));
+         List<Pass2SsaOptimization> optimizations = new ArrayList<>();
+         optimizations.add(new Pass2CullEmptyBlocks(controlFlowGraph, programScope, log));
+         optimizations.add(new Pass2ConstantPropagation(controlFlowGraph, programScope, log));
+         optimizations.add(new Pass2ConstantAdditionElimination(controlFlowGraph, programScope, log));
+         optimizations.add(new Pass2AliasElimination(controlFlowGraph, programScope, log));
+         optimizations.add(new Pass2RedundantPhiElimination(controlFlowGraph, programScope, log));
+         optimizations.add(new Pass2SelfPhiElimination(controlFlowGraph, programScope, log));
+         optimizations.add(new Pass2ConditionalJumpSimplification(controlFlowGraph, programScope, log));
 
-      List<Pass2SsaAssertion> assertions = new ArrayList<>();
-      assertions.add(new Pass2AssertSymbols(controlFlowGraph, programScope));
-      assertions.add(new Pass2AssertBlocks(controlFlowGraph, programScope));
+         List<Pass2SsaAssertion> assertions = new ArrayList<>();
+         assertions.add(new Pass2AssertSymbols(controlFlowGraph, programScope));
+         assertions.add(new Pass2AssertBlocks(controlFlowGraph, programScope));
 
-      boolean ssaOptimized = true;
-      while (ssaOptimized) {
-         for (Pass2SsaAssertion assertion : assertions) {
-            assertion.check();
-         }
-         ssaOptimized = false;
-         for (Pass2SsaOptimization optimization : optimizations) {
-            boolean stepOptimized = optimization.optimize();
-            if (stepOptimized) {
-               log.append("Succesful SSA optimization "+optimization.getClass().getSimpleName()+"");
-               ssaOptimized = true;
-               log.append("CONTROL FLOW GRAPH");
-               log.append(controlFlowGraph.toString());
+         boolean ssaOptimized = true;
+         while (ssaOptimized) {
+            for (Pass2SsaAssertion assertion : assertions) {
+               assertion.check();
+            }
+            ssaOptimized = false;
+            for (Pass2SsaOptimization optimization : optimizations) {
+               boolean stepOptimized = optimization.optimize();
+               if (stepOptimized) {
+                  log.append("Succesful SSA optimization " + optimization.getClass().getSimpleName() + "");
+                  ssaOptimized = true;
+                  log.append("CONTROL FLOW GRAPH");
+                  log.append(controlFlowGraph.toString());
+               }
             }
          }
-      }
 
-      Pass3BlockSequencePlanner pass3BlockSequencePlanner = new Pass3BlockSequencePlanner(controlFlowGraph, programScope);
-      pass3BlockSequencePlanner.plan();
-      Pass3RegisterAllocation pass3RegisterAllocation = new Pass3RegisterAllocation(controlFlowGraph, programScope);
-      pass3RegisterAllocation.allocate();
-      Pass3CodeGeneration pass3CodeGeneration = new Pass3CodeGeneration(controlFlowGraph, programScope);
-      AsmProgram asmProgram = pass3CodeGeneration.generate();
+         Pass3BlockSequencePlanner pass3BlockSequencePlanner = new Pass3BlockSequencePlanner(
+               controlFlowGraph,
+               programScope);
+         pass3BlockSequencePlanner.plan();
+         Pass3RegisterAllocation pass3RegisterAllocation = new Pass3RegisterAllocation(controlFlowGraph, programScope);
+         pass3RegisterAllocation.allocate();
+         Pass3CodeGeneration pass3CodeGeneration = new Pass3CodeGeneration(controlFlowGraph, programScope);
+         AsmProgram asmProgram = pass3CodeGeneration.generate();
 
-      log.append("INITIAL ASM");
-      log.append(asmProgram.toString());
+         log.append("INITIAL ASM");
+         log.append(asmProgram.toString());
 
-      List<Pass4AsmOptimization> pass4Optimizations = new ArrayList<>();
-      pass4Optimizations.add(new Pass4NextJumpElimination(asmProgram, log));
-      pass4Optimizations.add(new Pass4UnnecesaryLoadElimination(asmProgram, log));
-      boolean asmOptimized = true;
-      while(asmOptimized) {
-         asmOptimized = false;
-         for (Pass4AsmOptimization optimization : pass4Optimizations) {
-            boolean stepOtimized = optimization.optimize();
-            if(stepOtimized) {
-               log.append("Succesful ASM optimization "+optimization.getClass().getSimpleName());
-               asmOptimized = true;
-               log.append("ASSEMBLER");
-               log.append(asmProgram.toString());
+         List<Pass4AsmOptimization> pass4Optimizations = new ArrayList<>();
+         pass4Optimizations.add(new Pass4NextJumpElimination(asmProgram, log));
+         pass4Optimizations.add(new Pass4UnnecesaryLoadElimination(asmProgram, log));
+         boolean asmOptimized = true;
+         while (asmOptimized) {
+            asmOptimized = false;
+            for (Pass4AsmOptimization optimization : pass4Optimizations) {
+               boolean stepOtimized = optimization.optimize();
+               if (stepOtimized) {
+                  log.append("Succesful ASM optimization " + optimization.getClass().getSimpleName());
+                  asmOptimized = true;
+                  log.append("ASSEMBLER");
+                  log.append(asmProgram.toString());
+               }
             }
          }
-      }
 
-      return new CompilationResult(asmProgram, controlFlowGraph, programScope, log);
+         log.append("FINAL SYMBOL TABLE");
+         log.append(programScope.getSymbolTableContents());
+         log.append("FINAL CODE");
+         log.append(asmProgram.toString());
+
+         return new CompilationResult(asmProgram, controlFlowGraph, programScope, log);
+      } catch (Exception e) {
+         System.out.println(log.getLog());
+         throw e;
+      }
    }
 
 }
diff --git a/src/dk/camelot64/kickc/TODO.txt b/src/dk/camelot64/kickc/TODO.txt
index b996eeae3..37b9f9747 100644
--- a/src/dk/camelot64/kickc/TODO.txt
+++ b/src/dk/camelot64/kickc/TODO.txt
@@ -1,8 +1,8 @@
 Features
 - Move the main code into a main() function, and disallow code outside functions. The main function per default has no parameters and exits with RTS.
+- Add a for loop for(init;condition;increment) {stmt} -> { init; do { stmt; increment } while (condition) }
 - Implement Register Allocation (that utilize real registers - and non-zeropage memory)
 - Add Fixed Point number types
-- Add a for loop for(init;condition;increment) {stmt} -> { init; do { stmt; increment } while (condition) }
 - Add imports
 - Add structs
 - Let { stmt } introduce a new anonymous scope.
diff --git a/src/dk/camelot64/kickc/icl/Pass1ProcedureCallParameters.java b/src/dk/camelot64/kickc/icl/Pass1ProcedureCallParameters.java
index 2eed78f3b..ab1b5cbf9 100644
--- a/src/dk/camelot64/kickc/icl/Pass1ProcedureCallParameters.java
+++ b/src/dk/camelot64/kickc/icl/Pass1ProcedureCallParameters.java
@@ -44,7 +44,8 @@ public class Pass1ProcedureCallParameters extends ControlFlowGraphCopyVisitor {
          // No return type. Remove variable receiving the result.
          LValue lValue = origCall.getLValue();
          if(lValue instanceof Variable) {
-            scope.remove((Variable) lValue);
+            Variable lVar = (Variable) lValue;
+            lVar.getScope().remove(lVar);
          }
       }
 
diff --git a/src/dk/camelot64/kickc/icl/Pass2CullEmptyBlocks.java b/src/dk/camelot64/kickc/icl/Pass2CullEmptyBlocks.java
index 923a266b1..afb6045a5 100644
--- a/src/dk/camelot64/kickc/icl/Pass2CullEmptyBlocks.java
+++ b/src/dk/camelot64/kickc/icl/Pass2CullEmptyBlocks.java
@@ -62,7 +62,7 @@ public class Pass2CullEmptyBlocks extends Pass2SsaOptimization {
          };
          phiFixVisitor.visitBlock(successor);
          getGraph().getAllBlocks().remove(removeBlock);
-         getSymbols().remove(removeBlock.getLabel());
+         removeBlock.getLabel().getScope().remove(removeBlock.getLabel());
          log.append("Culled Empty Block " + removeBlock.getLabel());
       }
       return remove.size()>0;
diff --git a/src/dk/camelot64/kickc/icl/Pass3RegisterAllocation.java b/src/dk/camelot64/kickc/icl/Pass3RegisterAllocation.java
index e93eaef6f..28da6d4b1 100644
--- a/src/dk/camelot64/kickc/icl/Pass3RegisterAllocation.java
+++ b/src/dk/camelot64/kickc/icl/Pass3RegisterAllocation.java
@@ -139,13 +139,13 @@ public class Pass3RegisterAllocation {
       allocation.allocate(symbols.getVariable("flip::$0"), RegisterAllocation.getRegisterA());
       allocation.allocate(symbols.getVariable("flip::$8"), RegisterAllocation.getRegisterA());
       allocation.allocate(symbols.getVariable("flip::$4"), RegisterAllocation.getRegisterA());
-      allocation.allocate(symbols.getVariable("$1"), RegisterAllocation.getRegisterA());
-      allocation.allocate(symbols.getVariable("$3"), RegisterAllocation.getRegisterA());
-      allocation.allocate(symbols.getVariable("c#0"), RegisterAllocation.getRegisterX());
-      allocation.allocate(symbols.getVariable("c#1"), RegisterAllocation.getRegisterX());
-      allocation.allocate(symbols.getVariable("c#2"), RegisterAllocation.getRegisterX());
-      allocation.allocate(symbols.getVariable("c#3"), RegisterAllocation.getRegisterX());
-      allocation.allocate(symbols.getVariable("c#4"), RegisterAllocation.getRegisterX());
+      allocation.allocate(symbols.getVariable("main::$1"), RegisterAllocation.getRegisterA());
+      allocation.allocate(symbols.getVariable("main::$3"), RegisterAllocation.getRegisterA());
+      allocation.allocate(symbols.getVariable("main::c#0"), RegisterAllocation.getRegisterX());
+      allocation.allocate(symbols.getVariable("main::c#1"), RegisterAllocation.getRegisterX());
+      allocation.allocate(symbols.getVariable("main::c#2"), RegisterAllocation.getRegisterX());
+      allocation.allocate(symbols.getVariable("main::c#3"), RegisterAllocation.getRegisterX());
+      allocation.allocate(symbols.getVariable("main::c#4"), RegisterAllocation.getRegisterX());
       symbols.setAllocation(allocation);
 
    }
diff --git a/src/dk/camelot64/kickc/test/flipper-rex2.kc b/src/dk/camelot64/kickc/test/flipper-rex2.kc
index 9dad14303..3dc8e7502 100644
--- a/src/dk/camelot64/kickc/test/flipper-rex2.kc
+++ b/src/dk/camelot64/kickc/test/flipper-rex2.kc
@@ -1,20 +1,23 @@
 byte[1000] SCREEN = $0400;
 byte[16*16] buffer1 = $1000;
 byte[16*16] buffer2 = $1100;
-
 byte *RASTER = $d012;
 
-prepare();
-do {
-   byte c = 25;
-   do{
-     do { } while(*RASTER!=254)
-     do { } while(*RASTER!=255)
-     c--;
-   } while(c!=0)
-   flip();
-   plot();
-} while(true)
+main();
+
+void main() {
+  prepare();
+  do {
+     byte c = 25;
+     do{
+       do { } while(*RASTER!=254)
+       do { } while(*RASTER!=255)
+       c--;
+     } while(c!=0)
+     flip();
+     plot();
+  } while(true)
+}
 
 // Prepare buffer
 void prepare() {
diff --git a/src/dk/camelot64/kickc/test/ref/flipper-rex2.asm b/src/dk/camelot64/kickc/test/ref/flipper-rex2.asm
index e1260588b..a6064dd30 100644
--- a/src/dk/camelot64/kickc/test/ref/flipper-rex2.asm
+++ b/src/dk/camelot64/kickc/test/ref/flipper-rex2.asm
@@ -1,31 +1,35 @@
 BBEGIN:
+  jsr main
+BEND:
+main:
   jsr prepare
-B2_from_BBEGIN:
+main__B2_from_main:
   ldx #25
-  jmp B2
-B2_from_B20:
+  jmp main__B2
+main__B2_from_B18:
   ldx #25
-B2_from_B6:
-B2:
-B3:
+main__B2_from_B2:
+main__B2:
+main__B3:
   lda 53266
   cmp #254
-  bne B3
-B4:
+  bne main__main__B3
+main__B4:
   lda 53266
   cmp #255
-  bne B4
-B6:
+  bne main__main__B4
+B2:
   dex
   cpx #0
-  bne B2_from_B6
-B7:
+  bne main__B2_from_B2
+B3:
   jsr flip
-B19:
+B17:
   jsr plot
-B20:
-  jmp B2_from_B20
-BEND:
+B18:
+  jmp main__B2_from_B18
+main__Breturn:
+  rts
 plot:
 plot__B1_from_plot:
   lda #16
@@ -35,7 +39,7 @@ plot__B1_from_plot:
   sta 101
   lda #>1236
   sta 101+1
-plot__B1_from_B15:
+plot__B1_from_B12:
 plot__B1:
 plot__B2_from_B1:
   ldy #0
@@ -47,7 +51,7 @@ plot__B2:
   iny
   cpy #16
   bcc plot__B2_from_B2
-B15:
+B12:
   lda 101
   clc
   adc #40
@@ -57,7 +61,7 @@ B15:
 !:
   dec 100
   lda 100
-  bne plot__B1_from_B15
+  bne plot__B1_from_B12
 plot__Breturn:
   rts
 flip:
@@ -66,7 +70,7 @@ flip__B1_from_flip:
   sta 104
   ldx #0
   ldy #15
-flip__B1_from_B11:
+flip__B1_from_B8:
 flip__B1:
 flip__B2_from_B1:
   lda #16
@@ -83,12 +87,12 @@ flip__B2:
   dec 103
   lda 103
   bne flip__B2_from_B2
-B11:
+B8:
   dey
   dec 104
   lda 104
-  bne flip__B1_from_B11
-flip__B3_from_B11:
+  bne flip__B1_from_B8
+flip__B3_from_B8:
   ldx #0
 flip__B3_from_B3:
 flip__B3:
diff --git a/src/dk/camelot64/kickc/test/ref/flipper-rex2.cfg b/src/dk/camelot64/kickc/test/ref/flipper-rex2.cfg
index aaa567143..fe1ab67c1 100644
--- a/src/dk/camelot64/kickc/test/ref/flipper-rex2.cfg
+++ b/src/dk/camelot64/kickc/test/ref/flipper-rex2.cfg
@@ -1,31 +1,37 @@
 @BEGIN: from
-  call prepare param-assignment
-  to:@2
-@2: from @20 @6 @BEGIN
-  (byte) c#2 ← phi( @20/(byte) 25 @6/(byte) c#1 @BEGIN/(byte) 25 )
-  to:@3
-@3: from @2 @3
-  (byte~) $1 ← * (word) 53266
-  if((byte~) $1!=(byte) 254) goto @3
-  to:@4
-@4: from @3 @4
-  (byte~) $3 ← * (word) 53266
-  if((byte~) $3!=(byte) 255) goto @4
-  to:@6
-@6: from @4
-  (byte) c#1 ← -- (byte) c#2
-  if((byte) c#1!=(byte) 0) goto @2
-  to:@7
-@7: from @6
-  call flip param-assignment
-  to:@19
-@19: from @7
-  call plot param-assignment
-  to:@20
-@20: from @19
-  if(true) goto @2
+  call main param-assignment
   to:@END
-prepare: from @BEGIN
+main: from @BEGIN
+  call prepare param-assignment
+  to:main::@2
+main::@2: from @18 @2 main
+  (byte) main::c#2 ← phi( @2/(byte) main::c#1 @18/(byte) 25 main/(byte) 25 )
+  to:main::@3
+main::@3: from main::@2 main::@3
+  (byte~) main::$1 ← * (word) 53266
+  if((byte~) main::$1!=(byte) 254) goto main::@3
+  to:main::@4
+main::@4: from main::@3 main::@4
+  (byte~) main::$3 ← * (word) 53266
+  if((byte~) main::$3!=(byte) 255) goto main::@4
+  to:@2
+@2: from main::@4
+  (byte) main::c#1 ← -- (byte) main::c#2
+  if((byte) main::c#1!=(byte) 0) goto main::@2
+  to:@3
+@3: from @2
+  call flip param-assignment
+  to:@17
+@17: from @3
+  call plot param-assignment
+  to:@18
+@18: from @17
+  if(true) goto main::@2
+  to:main::@return
+main::@return: from @18
+  return 
+  to:@RETURN
+prepare: from main
   to:prepare::@1
 prepare::@1: from prepare prepare::@1
   (byte) prepare::i#2 ← phi( prepare/(byte) 0 prepare::@1/(byte) prepare::i#1 )
@@ -36,12 +42,12 @@ prepare::@1: from prepare prepare::@1
 prepare::@return: from prepare::@1
   return 
   to:@RETURN
-flip: from @7
+flip: from @3
   to:flip::@1
-flip::@1: from @11 flip
-  (byte) flip::r#2 ← phi( @11/(byte) flip::r#1 flip/(byte) 16 )
-  (byte) flip::srcIdx#3 ← phi( @11/(byte) flip::srcIdx#1 flip/(byte) 0 )
-  (byte) flip::dstIdx#5 ← phi( @11/(byte) flip::dstIdx#2 flip/(byte) 15 )
+flip::@1: from @8 flip
+  (byte) flip::r#2 ← phi( @8/(byte) flip::r#1 flip/(byte) 16 )
+  (byte) flip::srcIdx#3 ← phi( @8/(byte) flip::srcIdx#1 flip/(byte) 0 )
+  (byte) flip::dstIdx#5 ← phi( @8/(byte) flip::dstIdx#2 flip/(byte) 15 )
   to:flip::@2
 flip::@2: from flip::@1 flip::@2
   (byte) flip::c#2 ← phi( flip::@1/(byte) 16 flip::@2/(byte) flip::c#1 )
@@ -53,14 +59,14 @@ flip::@2: from flip::@1 flip::@2
   (byte) flip::dstIdx#1 ← (byte) flip::dstIdx#3 + (byte) 16
   (byte) flip::c#1 ← -- (byte) flip::c#2
   if((byte) flip::c#1!=(byte) 0) goto flip::@2
-  to:@11
-@11: from flip::@2
+  to:@8
+@8: from flip::@2
   (byte) flip::dstIdx#2 ← -- (byte) flip::dstIdx#1
   (byte) flip::r#1 ← -- (byte) flip::r#2
   if((byte) flip::r#1!=(byte) 0) goto flip::@1
   to:flip::@3
-flip::@3: from @11 flip::@3
-  (byte) flip::i#2 ← phi( @11/(byte) 0 flip::@3/(byte) flip::i#1 )
+flip::@3: from @8 flip::@3
+  (byte) flip::i#2 ← phi( @8/(byte) 0 flip::@3/(byte) flip::i#1 )
   (byte~) flip::$4 ← (word) 4352 *idx (byte) flip::i#2
   *((word) 4096 + (byte) flip::i#2) ← (byte~) flip::$4
   (byte) flip::i#1 ← ++ (byte) flip::i#2
@@ -69,12 +75,12 @@ flip::@3: from @11 flip::@3
 flip::@return: from flip::@3
   return 
   to:@RETURN
-plot: from @19
+plot: from @17
   to:plot::@1
-plot::@1: from @15 plot
-  (byte) plot::y#2 ← phi( @15/(byte) plot::y#1 plot/(byte) 16 )
-  (byte) plot::i#3 ← phi( @15/(byte) plot::i#1 plot/(byte) 0 )
-  (byte*) plot::line#2 ← phi( @15/(byte*) plot::line#1 plot/(word) 1236 )
+plot::@1: from @12 plot
+  (byte) plot::y#2 ← phi( @12/(byte) plot::y#1 plot/(byte) 16 )
+  (byte) plot::i#3 ← phi( @12/(byte) plot::i#1 plot/(byte) 0 )
+  (byte*) plot::line#2 ← phi( @12/(byte*) plot::line#1 plot/(word) 1236 )
   to:plot::@2
 plot::@2: from plot::@1 plot::@2
   (byte) plot::x#2 ← phi( plot::@1/(byte) 0 plot::@2/(byte) plot::x#1 )
@@ -84,13 +90,13 @@ plot::@2: from plot::@1 plot::@2
   (byte) plot::i#1 ← ++ (byte) plot::i#2
   (byte) plot::x#1 ← ++ (byte) plot::x#2
   if((byte) plot::x#1<(byte) 16) goto plot::@2
-  to:@15
-@15: from plot::@2
+  to:@12
+@12: from plot::@2
   (byte*) plot::line#1 ← (byte*) plot::line#2 + (byte) 40
   (byte) plot::y#1 ← -- (byte) plot::y#2
   if((byte) plot::y#1!=(byte) 0) goto plot::@1
   to:plot::@return
-plot::@return: from @15
+plot::@return: from @12
   return 
   to:@RETURN
-@END: from @20
+@END: from @BEGIN
diff --git a/src/dk/camelot64/kickc/test/ref/flipper-rex2.log b/src/dk/camelot64/kickc/test/ref/flipper-rex2.log
index bf058b9a6..367d5476d 100644
--- a/src/dk/camelot64/kickc/test/ref/flipper-rex2.log
+++ b/src/dk/camelot64/kickc/test/ref/flipper-rex2.log
@@ -1,20 +1,23 @@
 byte[1000] SCREEN = $0400;
 byte[16*16] buffer1 = $1000;
 byte[16*16] buffer2 = $1100;
-
 byte *RASTER = $d012;
 
-prepare();
-do {
-   byte c = 25;
-   do{
-     do { } while(*RASTER!=254)
-     do { } while(*RASTER!=255)
-     c--;
-   } while(c!=0)
-   flip();
-   plot();
-} while(true)
+main();
+
+void main() {
+  prepare();
+  do {
+     byte c = 25;
+     do{
+       do { } while(*RASTER!=254)
+       do { } while(*RASTER!=255)
+       c--;
+     } while(c!=0)
+     flip();
+     plot();
+  } while(true)
+}
 
 // Prepare buffer
 void prepare() {
@@ -56,7 +59,7 @@ void plot() {
       line = line+40;
    } while(--y!=0)
 }
-Adding pre/post-modifier (byte) c ← -- (byte) c
+Adding pre/post-modifier (byte) main::c ← -- (byte) main::c
 Adding pre/post-modifier (byte) prepare::i ← ++ (byte) prepare::i
 Adding pre/post-modifier (byte) flip::srcIdx ← ++ (byte) flip::srcIdx
 Adding pre/post-modifier (byte) flip::c ← -- (byte) flip::c
@@ -71,24 +74,29 @@ PROGRAM
   (byte[256]) buffer1 ← (word) 4096
   (byte[256]) buffer2 ← (word) 4352
   (byte*) RASTER ← (word) 53266
-  (void~) $0 ← call prepare 
-@1:
-  (byte) c ← (byte) 25
-@2:
-@3:
-  (byte~) $1 ← * (byte*) RASTER
-  (boolean~) $2 ← (byte~) $1 != (byte) 254
-  if((boolean~) $2) goto @3
-@4:
-  (byte~) $3 ← * (byte*) RASTER
-  (boolean~) $4 ← (byte~) $3 != (byte) 255
-  if((boolean~) $4) goto @4
-  (byte) c ← -- (byte) c
-  (boolean~) $5 ← (byte) c != (byte) 0
-  if((boolean~) $5) goto @2
-  (void~) $6 ← call flip 
-  (void~) $7 ← call plot 
-  if(true) goto @1
+  (void~) $0 ← call main 
+  proc (void()) main()
+  (void~) main::$0 ← call prepare 
+main::@1:
+  (byte) main::c ← (byte) 25
+main::@2:
+main::@3:
+  (byte~) main::$1 ← * (byte*) RASTER
+  (boolean~) main::$2 ← (byte~) main::$1 != (byte) 254
+  if((boolean~) main::$2) goto main::@3
+main::@4:
+  (byte~) main::$3 ← * (byte*) RASTER
+  (boolean~) main::$4 ← (byte~) main::$3 != (byte) 255
+  if((boolean~) main::$4) goto main::@4
+  (byte) main::c ← -- (byte) main::c
+  (boolean~) main::$5 ← (byte) main::c != (byte) 0
+  if((boolean~) main::$5) goto main::@2
+  (void~) main::$6 ← call flip 
+  (void~) main::$7 ← call plot 
+  if(true) goto main::@1
+main::@return:
+  return 
+  endproc // main()
   proc (void()) prepare()
   (byte) prepare::i ← (byte) 0
 prepare::@1:
@@ -155,22 +163,10 @@ plot::@return:
 
 SYMBOLS
 (void~) $0
-(byte~) $1
-(boolean~) $2
-(byte~) $3
-(boolean~) $4
-(boolean~) $5
-(void~) $6
-(void~) $7
-(label) @1
-(label) @2
-(label) @3
-(label) @4
 (byte*) RASTER
 (byte[1000]) SCREEN
 (byte[256]) buffer1
 (byte[256]) buffer2
-(byte) c
 (void()) flip()
 (byte~) flip::$0
 (byte~) flip::$1
@@ -188,6 +184,22 @@ SYMBOLS
 (byte) flip::r
 (byte) flip::srcIdx
 
+(void()) main()
+(void~) main::$0
+(byte~) main::$1
+(boolean~) main::$2
+(byte~) main::$3
+(boolean~) main::$4
+(boolean~) main::$5
+(void~) main::$6
+(void~) main::$7
+(label) main::@1
+(label) main::@2
+(label) main::@3
+(label) main::@4
+(label) main::@return
+(byte) main::c
+
 (void()) plot()
 (byte~) plot::$0
 (byte*~) plot::$1
@@ -217,37 +229,45 @@ INITIAL CONTROL FLOW GRAPH
   (byte[256]) buffer1 ← (word) 4096
   (byte[256]) buffer2 ← (word) 4352
   (byte*) RASTER ← (word) 53266
-  (void~) $0 ← call prepare 
-  to:@1
-@1: from @7 @BEGIN
-  (byte) c ← (byte) 25
-  to:@2
-@2: from @1 @6
-  to:@3
-@3: from @2 @3
-  (byte~) $1 ← * (byte*) RASTER
-  (boolean~) $2 ← (byte~) $1 != (byte) 254
-  if((boolean~) $2) goto @3
+  (void~) $0 ← call main 
   to:@5
-@5: from @3
+main: from
+  (void~) main::$0 ← call prepare 
+  to:main::@1
+main::@1: from @3 main
+  (byte) main::c ← (byte) 25
+  to:main::@2
+main::@2: from @2 main::@1
+  to:main::@3
+main::@3: from main::@2 main::@3
+  (byte~) main::$1 ← * (byte*) RASTER
+  (boolean~) main::$2 ← (byte~) main::$1 != (byte) 254
+  if((boolean~) main::$2) goto main::@3
+  to:@1
+@1: from main::@3
+  to:main::@4
+main::@4: from @1 main::@4
+  (byte~) main::$3 ← * (byte*) RASTER
+  (boolean~) main::$4 ← (byte~) main::$3 != (byte) 255
+  if((boolean~) main::$4) goto main::@4
+  to:@2
+@2: from main::@4
+  (byte) main::c ← -- (byte) main::c
+  (boolean~) main::$5 ← (byte) main::c != (byte) 0
+  if((boolean~) main::$5) goto main::@2
+  to:@3
+@3: from @2
+  (void~) main::$6 ← call flip 
+  (void~) main::$7 ← call plot 
+  if(true) goto main::@1
   to:@4
-@4: from @4 @5
-  (byte~) $3 ← * (byte*) RASTER
-  (boolean~) $4 ← (byte~) $3 != (byte) 255
-  if((boolean~) $4) goto @4
-  to:@6
-@6: from @4
-  (byte) c ← -- (byte) c
-  (boolean~) $5 ← (byte) c != (byte) 0
-  if((boolean~) $5) goto @2
+@4: from @3
+  to:main::@return
+main::@return: from @4
+  return 
+  to:@RETURN
+@5: from @BEGIN
   to:@7
-@7: from @6
-  (void~) $6 ← call flip 
-  (void~) $7 ← call plot 
-  if(true) goto @1
-  to:@8
-@8: from @7
-  to:@10
 prepare: from
   (byte) prepare::i ← (byte) 0
   to:prepare::@1
@@ -256,20 +276,20 @@ prepare::@1: from prepare prepare::@1
   (byte) prepare::i ← ++ (byte) prepare::i
   (boolean~) prepare::$0 ← (byte) prepare::i != (byte) 0
   if((boolean~) prepare::$0) goto prepare::@1
-  to:@9
-@9: from prepare::@1
+  to:@6
+@6: from prepare::@1
   to:prepare::@return
-prepare::@return: from @9
+prepare::@return: from @6
   return 
   to:@RETURN
-@10: from @8
-  to:@14
+@7: from @5
+  to:@11
 flip: from
   (byte) flip::srcIdx ← (byte) 0
   (byte) flip::dstIdx ← (byte) 15
   (byte) flip::r ← (byte) 16
   to:flip::@1
-flip::@1: from @11 flip
+flip::@1: from @8 flip
   (byte) flip::c ← (byte) 16
   to:flip::@2
 flip::@2: from flip::@1 flip::@2
@@ -281,30 +301,30 @@ flip::@2: from flip::@1 flip::@2
   (byte) flip::c ← -- (byte) flip::c
   (boolean~) flip::$2 ← (byte) flip::c != (byte) 0
   if((boolean~) flip::$2) goto flip::@2
-  to:@11
-@11: from flip::@2
+  to:@8
+@8: from flip::@2
   (byte) flip::dstIdx ← -- (byte) flip::dstIdx
   (byte) flip::r ← -- (byte) flip::r
   (boolean~) flip::$3 ← (byte) flip::r != (byte) 0
   if((boolean~) flip::$3) goto flip::@1
-  to:@12
-@12: from @11
+  to:@9
+@9: from @8
   (byte) flip::i ← (byte) 0
   to:flip::@3
-flip::@3: from @12 flip::@3
+flip::@3: from @9 flip::@3
   (byte~) flip::$4 ← (byte[256]) buffer2 *idx (byte) flip::i
   *((byte[256]) buffer1 + (byte) flip::i) ← (byte~) flip::$4
   (byte) flip::i ← ++ (byte) flip::i
   (boolean~) flip::$5 ← (byte) flip::i != (byte) 0
   if((boolean~) flip::$5) goto flip::@3
-  to:@13
-@13: from flip::@3
+  to:@10
+@10: from flip::@3
   to:flip::@return
-flip::@return: from @13
+flip::@return: from @10
   return 
   to:@RETURN
-@14: from @10
-  to:@17
+@11: from @7
+  to:@14
 plot: from
   (byte~) plot::$0 ← (byte) 5 * (byte) 40
   (byte*~) plot::$1 ← (byte[1000]) SCREEN + (byte~) plot::$0
@@ -313,7 +333,7 @@ plot: from
   (byte) plot::y ← (byte) 16
   (byte) plot::i ← (byte) 0
   to:plot::@1
-plot::@1: from @15 plot
+plot::@1: from @12 plot
   (byte) plot::x ← (byte) 0
   to:plot::@2
 plot::@2: from plot::@1 plot::@2
@@ -323,22 +343,22 @@ plot::@2: from plot::@1 plot::@2
   (byte) plot::x ← ++ (byte) plot::x
   (boolean~) plot::$4 ← (byte) plot::x < (byte) 16
   if((boolean~) plot::$4) goto plot::@2
-  to:@15
-@15: from plot::@2
+  to:@12
+@12: from plot::@2
   (byte*~) plot::$5 ← (byte*) plot::line + (byte) 40
   (byte*) plot::line ← (byte*~) plot::$5
   (byte) plot::y ← -- (byte) plot::y
   (boolean~) plot::$6 ← (byte) plot::y != (byte) 0
   if((boolean~) plot::$6) goto plot::@1
-  to:@16
-@16: from @15
+  to:@13
+@13: from @12
   to:plot::@return
-plot::@return: from @16
+plot::@return: from @13
   return 
   to:@RETURN
-@17: from @14
+@14: from @11
   to:@END
-@END: from @17
+@END: from @14
 
 CONTROL FLOW GRAPH WITH ASSIGNMENT CALL
 @BEGIN: from
@@ -346,44 +366,54 @@ CONTROL FLOW GRAPH WITH ASSIGNMENT CALL
   (byte[256]) buffer1 ← (word) 4096
   (byte[256]) buffer2 ← (word) 4352
   (byte*) RASTER ← (word) 53266
-  call prepare param-assignment
-  to:@18
-@18: from @BEGIN
-  to:@1
-@1: from @18 @20
-  (byte) c ← (byte) 25
-  to:@2
-@2: from @1 @6
-  to:@3
-@3: from @2 @3
-  (byte~) $1 ← * (byte*) RASTER
-  (boolean~) $2 ← (byte~) $1 != (byte) 254
-  if((boolean~) $2) goto @3
+  call main param-assignment
+  to:@15
+@15: from @BEGIN
   to:@5
-@5: from @3
-  to:@4
-@4: from @4 @5
-  (byte~) $3 ← * (byte*) RASTER
-  (boolean~) $4 ← (byte~) $3 != (byte) 255
-  if((boolean~) $4) goto @4
-  to:@6
-@6: from @4
-  (byte) c ← -- (byte) c
-  (boolean~) $5 ← (byte) c != (byte) 0
-  if((boolean~) $5) goto @2
-  to:@7
-@7: from @6
+main: from @BEGIN
+  call prepare param-assignment
+  to:@16
+@16: from main
+  to:main::@1
+main::@1: from @16 @18
+  (byte) main::c ← (byte) 25
+  to:main::@2
+main::@2: from @2 main::@1
+  to:main::@3
+main::@3: from main::@2 main::@3
+  (byte~) main::$1 ← * (byte*) RASTER
+  (boolean~) main::$2 ← (byte~) main::$1 != (byte) 254
+  if((boolean~) main::$2) goto main::@3
+  to:@1
+@1: from main::@3
+  to:main::@4
+main::@4: from @1 main::@4
+  (byte~) main::$3 ← * (byte*) RASTER
+  (boolean~) main::$4 ← (byte~) main::$3 != (byte) 255
+  if((boolean~) main::$4) goto main::@4
+  to:@2
+@2: from main::@4
+  (byte) main::c ← -- (byte) main::c
+  (boolean~) main::$5 ← (byte) main::c != (byte) 0
+  if((boolean~) main::$5) goto main::@2
+  to:@3
+@3: from @2
   call flip param-assignment
-  to:@19
-@19: from @7
+  to:@17
+@17: from @3
   call plot param-assignment
-  to:@20
-@20: from @19
-  if(true) goto @1
-  to:@8
-@8: from @20
-  to:@10
-prepare: from @BEGIN
+  to:@18
+@18: from @17
+  if(true) goto main::@1
+  to:@4
+@4: from @18
+  to:main::@return
+main::@return: from @4
+  return 
+  to:@RETURN
+@5: from @15
+  to:@7
+prepare: from main
   (byte) prepare::i ← (byte) 0
   to:prepare::@1
 prepare::@1: from prepare prepare::@1
@@ -391,20 +421,20 @@ prepare::@1: from prepare prepare::@1
   (byte) prepare::i ← ++ (byte) prepare::i
   (boolean~) prepare::$0 ← (byte) prepare::i != (byte) 0
   if((boolean~) prepare::$0) goto prepare::@1
-  to:@9
-@9: from prepare::@1
+  to:@6
+@6: from prepare::@1
   to:prepare::@return
-prepare::@return: from @9
+prepare::@return: from @6
   return 
   to:@RETURN
-@10: from @8
-  to:@14
-flip: from @7
+@7: from @5
+  to:@11
+flip: from @3
   (byte) flip::srcIdx ← (byte) 0
   (byte) flip::dstIdx ← (byte) 15
   (byte) flip::r ← (byte) 16
   to:flip::@1
-flip::@1: from @11 flip
+flip::@1: from @8 flip
   (byte) flip::c ← (byte) 16
   to:flip::@2
 flip::@2: from flip::@1 flip::@2
@@ -416,31 +446,31 @@ flip::@2: from flip::@1 flip::@2
   (byte) flip::c ← -- (byte) flip::c
   (boolean~) flip::$2 ← (byte) flip::c != (byte) 0
   if((boolean~) flip::$2) goto flip::@2
-  to:@11
-@11: from flip::@2
+  to:@8
+@8: from flip::@2
   (byte) flip::dstIdx ← -- (byte) flip::dstIdx
   (byte) flip::r ← -- (byte) flip::r
   (boolean~) flip::$3 ← (byte) flip::r != (byte) 0
   if((boolean~) flip::$3) goto flip::@1
-  to:@12
-@12: from @11
+  to:@9
+@9: from @8
   (byte) flip::i ← (byte) 0
   to:flip::@3
-flip::@3: from @12 flip::@3
+flip::@3: from @9 flip::@3
   (byte~) flip::$4 ← (byte[256]) buffer2 *idx (byte) flip::i
   *((byte[256]) buffer1 + (byte) flip::i) ← (byte~) flip::$4
   (byte) flip::i ← ++ (byte) flip::i
   (boolean~) flip::$5 ← (byte) flip::i != (byte) 0
   if((boolean~) flip::$5) goto flip::@3
-  to:@13
-@13: from flip::@3
+  to:@10
+@10: from flip::@3
   to:flip::@return
-flip::@return: from @13
+flip::@return: from @10
   return 
   to:@RETURN
-@14: from @10
-  to:@17
-plot: from @19
+@11: from @7
+  to:@14
+plot: from @17
   (byte~) plot::$0 ← (byte) 5 * (byte) 40
   (byte*~) plot::$1 ← (byte[1000]) SCREEN + (byte~) plot::$0
   (byte*~) plot::$2 ← (byte*~) plot::$1 + (byte) 12
@@ -448,7 +478,7 @@ plot: from @19
   (byte) plot::y ← (byte) 16
   (byte) plot::i ← (byte) 0
   to:plot::@1
-plot::@1: from @15 plot
+plot::@1: from @12 plot
   (byte) plot::x ← (byte) 0
   to:plot::@2
 plot::@2: from plot::@1 plot::@2
@@ -458,22 +488,22 @@ plot::@2: from plot::@1 plot::@2
   (byte) plot::x ← ++ (byte) plot::x
   (boolean~) plot::$4 ← (byte) plot::x < (byte) 16
   if((boolean~) plot::$4) goto plot::@2
-  to:@15
-@15: from plot::@2
+  to:@12
+@12: from plot::@2
   (byte*~) plot::$5 ← (byte*) plot::line + (byte) 40
   (byte*) plot::line ← (byte*~) plot::$5
   (byte) plot::y ← -- (byte) plot::y
   (boolean~) plot::$6 ← (byte) plot::y != (byte) 0
   if((boolean~) plot::$6) goto plot::@1
-  to:@16
-@16: from @15
+  to:@13
+@13: from @12
   to:plot::@return
-plot::@return: from @16
+plot::@return: from @13
   return 
   to:@RETURN
-@17: from @14
+@14: from @11
   to:@END
-@END: from @17
+@END: from @14
 
 Completing Phi functions...
 Completing Phi functions...
@@ -493,90 +523,104 @@ CONTROL FLOW GRAPH SSA
   (byte[256]) buffer1#0 ← (word) 4096
   (byte[256]) buffer2#0 ← (word) 4352
   (byte*) RASTER#0 ← (word) 53266
-  call prepare param-assignment
-  to:@18
-@18: from @BEGIN
-  (byte[256]) buffer2#14 ← phi( @BEGIN/(byte[256]) buffer2#0 )
-  (byte[256]) buffer1#21 ← phi( @BEGIN/(byte[256]) buffer1#0 )
-  (byte[1000]) SCREEN#10 ← phi( @BEGIN/(byte[1000]) SCREEN#0 )
-  (byte*) RASTER#7 ← phi( @BEGIN/(byte*) RASTER#0 )
-  to:@1
-@1: from @18 @20
-  (byte[256]) buffer1#20 ← phi( @18/(byte[256]) buffer1#21 @20/(byte[256]) buffer1#22 )
-  (byte[256]) buffer2#13 ← phi( @18/(byte[256]) buffer2#14 @20/(byte[256]) buffer2#15 )
-  (byte[1000]) SCREEN#9 ← phi( @18/(byte[1000]) SCREEN#10 @20/(byte[1000]) SCREEN#11 )
-  (byte*) RASTER#5 ← phi( @18/(byte*) RASTER#7 @20/(byte*) RASTER#8 )
-  (byte) c#0 ← (byte) 25
-  to:@2
-@2: from @1 @6
-  (byte[256]) buffer2#12 ← phi( @1/(byte[256]) buffer2#13 @6/(byte[256]) buffer2#8 )
-  (byte[256]) buffer1#19 ← phi( @1/(byte[256]) buffer1#20 @6/(byte[256]) buffer1#15 )
-  (byte[1000]) SCREEN#8 ← phi( @1/(byte[1000]) SCREEN#9 @6/(byte[1000]) SCREEN#4 )
-  (byte) c#6 ← phi( @1/(byte) c#0 @6/(byte) c#1 )
-  (byte*) RASTER#3 ← phi( @1/(byte*) RASTER#5 @6/(byte*) RASTER#6 )
-  to:@3
-@3: from @2 @3
-  (byte[256]) buffer1#18 ← phi( @2/(byte[256]) buffer1#19 @3/(byte[256]) buffer1#18 )
-  (byte[256]) buffer2#11 ← phi( @2/(byte[256]) buffer2#12 @3/(byte[256]) buffer2#11 )
-  (byte[1000]) SCREEN#7 ← phi( @2/(byte[1000]) SCREEN#8 @3/(byte[1000]) SCREEN#7 )
-  (byte) c#5 ← phi( @2/(byte) c#6 @3/(byte) c#5 )
-  (byte*) RASTER#1 ← phi( @2/(byte*) RASTER#3 @3/(byte*) RASTER#1 )
-  (byte~) $1 ← * (byte*) RASTER#1
-  (boolean~) $2 ← (byte~) $1 != (byte) 254
-  if((boolean~) $2) goto @3
+  call main param-assignment
+  to:@15
+@15: from @BEGIN
   to:@5
-@5: from @3
-  (byte[256]) buffer2#10 ← phi( @3/(byte[256]) buffer2#11 )
-  (byte[256]) buffer1#17 ← phi( @3/(byte[256]) buffer1#18 )
-  (byte[1000]) SCREEN#6 ← phi( @3/(byte[1000]) SCREEN#7 )
-  (byte) c#4 ← phi( @3/(byte) c#5 )
-  (byte*) RASTER#4 ← phi( @3/(byte*) RASTER#1 )
-  to:@4
-@4: from @4 @5
-  (byte[256]) buffer1#16 ← phi( @4/(byte[256]) buffer1#16 @5/(byte[256]) buffer1#17 )
-  (byte[256]) buffer2#9 ← phi( @4/(byte[256]) buffer2#9 @5/(byte[256]) buffer2#10 )
-  (byte[1000]) SCREEN#5 ← phi( @4/(byte[1000]) SCREEN#5 @5/(byte[1000]) SCREEN#6 )
-  (byte) c#3 ← phi( @4/(byte) c#3 @5/(byte) c#4 )
-  (byte*) RASTER#2 ← phi( @4/(byte*) RASTER#2 @5/(byte*) RASTER#4 )
-  (byte~) $3 ← * (byte*) RASTER#2
-  (boolean~) $4 ← (byte~) $3 != (byte) 255
-  if((boolean~) $4) goto @4
-  to:@6
-@6: from @4
-  (byte[256]) buffer2#8 ← phi( @4/(byte[256]) buffer2#9 )
-  (byte[256]) buffer1#15 ← phi( @4/(byte[256]) buffer1#16 )
-  (byte[1000]) SCREEN#4 ← phi( @4/(byte[1000]) SCREEN#5 )
-  (byte*) RASTER#6 ← phi( @4/(byte*) RASTER#2 )
-  (byte) c#2 ← phi( @4/(byte) c#3 )
-  (byte) c#1 ← -- (byte) c#2
-  (boolean~) $5 ← (byte) c#1 != (byte) 0
-  if((boolean~) $5) goto @2
-  to:@7
-@7: from @6
-  (byte*) RASTER#10 ← phi( @6/(byte*) RASTER#6 )
-  (byte[256]) buffer1#13 ← phi( @6/(byte[256]) buffer1#15 )
-  (byte[256]) buffer2#7 ← phi( @6/(byte[256]) buffer2#8 )
-  (byte[1000]) SCREEN#3 ← phi( @6/(byte[1000]) SCREEN#4 )
+main: from @BEGIN
+  (byte[256]) buffer2#16 ← phi( @BEGIN/(byte[256]) buffer2#0 )
+  (byte[1000]) SCREEN#12 ← phi( @BEGIN/(byte[1000]) SCREEN#0 )
+  (byte*) RASTER#9 ← phi( @BEGIN/(byte*) RASTER#0 )
+  (byte[256]) buffer1#9 ← phi( @BEGIN/(byte[256]) buffer1#0 )
+  call prepare param-assignment
+  to:@16
+@16: from main
+  (byte[256]) buffer2#14 ← phi( main/(byte[256]) buffer2#16 )
+  (byte[256]) buffer1#22 ← phi( main/(byte[256]) buffer1#9 )
+  (byte[1000]) SCREEN#10 ← phi( main/(byte[1000]) SCREEN#12 )
+  (byte*) RASTER#7 ← phi( main/(byte*) RASTER#9 )
+  to:main::@1
+main::@1: from @16 @18
+  (byte[256]) buffer1#21 ← phi( @16/(byte[256]) buffer1#22 @18/(byte[256]) buffer1#23 )
+  (byte[256]) buffer2#13 ← phi( @16/(byte[256]) buffer2#14 @18/(byte[256]) buffer2#15 )
+  (byte[1000]) SCREEN#9 ← phi( @16/(byte[1000]) SCREEN#10 @18/(byte[1000]) SCREEN#11 )
+  (byte*) RASTER#6 ← phi( @16/(byte*) RASTER#7 @18/(byte*) RASTER#8 )
+  (byte) main::c#0 ← (byte) 25
+  to:main::@2
+main::@2: from @2 main::@1
+  (byte[256]) buffer2#12 ← phi( @2/(byte[256]) buffer2#8 main::@1/(byte[256]) buffer2#13 )
+  (byte[256]) buffer1#20 ← phi( @2/(byte[256]) buffer1#16 main::@1/(byte[256]) buffer1#21 )
+  (byte[1000]) SCREEN#8 ← phi( @2/(byte[1000]) SCREEN#4 main::@1/(byte[1000]) SCREEN#9 )
+  (byte) main::c#6 ← phi( @2/(byte) main::c#1 main::@1/(byte) main::c#0 )
+  (byte*) RASTER#3 ← phi( @2/(byte*) RASTER#5 main::@1/(byte*) RASTER#6 )
+  to:main::@3
+main::@3: from main::@2 main::@3
+  (byte[256]) buffer1#19 ← phi( main::@2/(byte[256]) buffer1#20 main::@3/(byte[256]) buffer1#19 )
+  (byte[256]) buffer2#11 ← phi( main::@2/(byte[256]) buffer2#12 main::@3/(byte[256]) buffer2#11 )
+  (byte[1000]) SCREEN#7 ← phi( main::@2/(byte[1000]) SCREEN#8 main::@3/(byte[1000]) SCREEN#7 )
+  (byte) main::c#5 ← phi( main::@2/(byte) main::c#6 main::@3/(byte) main::c#5 )
+  (byte*) RASTER#1 ← phi( main::@2/(byte*) RASTER#3 main::@3/(byte*) RASTER#1 )
+  (byte~) main::$1 ← * (byte*) RASTER#1
+  (boolean~) main::$2 ← (byte~) main::$1 != (byte) 254
+  if((boolean~) main::$2) goto main::@3
+  to:@1
+@1: from main::@3
+  (byte[256]) buffer2#10 ← phi( main::@3/(byte[256]) buffer2#11 )
+  (byte[256]) buffer1#18 ← phi( main::@3/(byte[256]) buffer1#19 )
+  (byte[1000]) SCREEN#6 ← phi( main::@3/(byte[1000]) SCREEN#7 )
+  (byte) main::c#4 ← phi( main::@3/(byte) main::c#5 )
+  (byte*) RASTER#4 ← phi( main::@3/(byte*) RASTER#1 )
+  to:main::@4
+main::@4: from @1 main::@4
+  (byte[256]) buffer1#17 ← phi( @1/(byte[256]) buffer1#18 main::@4/(byte[256]) buffer1#17 )
+  (byte[256]) buffer2#9 ← phi( @1/(byte[256]) buffer2#10 main::@4/(byte[256]) buffer2#9 )
+  (byte[1000]) SCREEN#5 ← phi( @1/(byte[1000]) SCREEN#6 main::@4/(byte[1000]) SCREEN#5 )
+  (byte) main::c#3 ← phi( @1/(byte) main::c#4 main::@4/(byte) main::c#3 )
+  (byte*) RASTER#2 ← phi( @1/(byte*) RASTER#4 main::@4/(byte*) RASTER#2 )
+  (byte~) main::$3 ← * (byte*) RASTER#2
+  (boolean~) main::$4 ← (byte~) main::$3 != (byte) 255
+  if((boolean~) main::$4) goto main::@4
+  to:@2
+@2: from main::@4
+  (byte[256]) buffer2#8 ← phi( main::@4/(byte[256]) buffer2#9 )
+  (byte[256]) buffer1#16 ← phi( main::@4/(byte[256]) buffer1#17 )
+  (byte[1000]) SCREEN#4 ← phi( main::@4/(byte[1000]) SCREEN#5 )
+  (byte*) RASTER#5 ← phi( main::@4/(byte*) RASTER#2 )
+  (byte) main::c#2 ← phi( main::@4/(byte) main::c#3 )
+  (byte) main::c#1 ← -- (byte) main::c#2
+  (boolean~) main::$5 ← (byte) main::c#1 != (byte) 0
+  if((boolean~) main::$5) goto main::@2
+  to:@3
+@3: from @2
+  (byte*) RASTER#11 ← phi( @2/(byte*) RASTER#5 )
+  (byte[256]) buffer1#14 ← phi( @2/(byte[256]) buffer1#16 )
+  (byte[256]) buffer2#7 ← phi( @2/(byte[256]) buffer2#8 )
+  (byte[1000]) SCREEN#3 ← phi( @2/(byte[1000]) SCREEN#4 )
   call flip param-assignment
-  to:@19
-@19: from @7
-  (byte[256]) buffer2#16 ← phi( @7/(byte[256]) buffer2#7 )
-  (byte*) RASTER#9 ← phi( @7/(byte*) RASTER#10 )
-  (byte[256]) buffer1#14 ← phi( @7/(byte[256]) buffer1#13 )
-  (byte[1000]) SCREEN#2 ← phi( @7/(byte[1000]) SCREEN#3 )
+  to:@17
+@17: from @3
+  (byte[256]) buffer2#17 ← phi( @3/(byte[256]) buffer2#7 )
+  (byte*) RASTER#10 ← phi( @3/(byte*) RASTER#11 )
+  (byte[256]) buffer1#15 ← phi( @3/(byte[256]) buffer1#14 )
+  (byte[1000]) SCREEN#2 ← phi( @3/(byte[1000]) SCREEN#3 )
   call plot param-assignment
-  to:@20
-@20: from @19
-  (byte[256]) buffer2#15 ← phi( @19/(byte[256]) buffer2#16 )
-  (byte[256]) buffer1#22 ← phi( @19/(byte[256]) buffer1#14 )
-  (byte[1000]) SCREEN#11 ← phi( @19/(byte[1000]) SCREEN#2 )
-  (byte*) RASTER#8 ← phi( @19/(byte*) RASTER#9 )
-  if(true) goto @1
-  to:@8
-@8: from @20
-  to:@10
-prepare: from @BEGIN
-  (byte[256]) buffer1#5 ← phi( @BEGIN/(byte[256]) buffer1#0 )
+  to:@18
+@18: from @17
+  (byte[256]) buffer2#15 ← phi( @17/(byte[256]) buffer2#17 )
+  (byte[256]) buffer1#23 ← phi( @17/(byte[256]) buffer1#15 )
+  (byte[1000]) SCREEN#11 ← phi( @17/(byte[1000]) SCREEN#2 )
+  (byte*) RASTER#8 ← phi( @17/(byte*) RASTER#10 )
+  if(true) goto main::@1
+  to:@4
+@4: from @18
+  to:main::@return
+main::@return: from @4
+  return 
+  to:@RETURN
+@5: from @15
+  to:@7
+prepare: from main
+  (byte[256]) buffer1#5 ← phi( main/(byte[256]) buffer1#9 )
   (byte) prepare::i#0 ← (byte) 0
   to:prepare::@1
 prepare::@1: from prepare prepare::@1
@@ -586,27 +630,27 @@ prepare::@1: from prepare prepare::@1
   (byte) prepare::i#1 ← ++ (byte) prepare::i#2
   (boolean~) prepare::$0 ← (byte) prepare::i#1 != (byte) 0
   if((boolean~) prepare::$0) goto prepare::@1
-  to:@9
-@9: from prepare::@1
+  to:@6
+@6: from prepare::@1
   to:prepare::@return
-prepare::@return: from @9
+prepare::@return: from @6
   return 
   to:@RETURN
-@10: from @8
-  to:@14
-flip: from @7
-  (byte[256]) buffer2#6 ← phi( @7/(byte[256]) buffer2#7 )
-  (byte[256]) buffer1#10 ← phi( @7/(byte[256]) buffer1#13 )
+@7: from @5
+  to:@11
+flip: from @3
+  (byte[256]) buffer2#6 ← phi( @3/(byte[256]) buffer2#7 )
+  (byte[256]) buffer1#11 ← phi( @3/(byte[256]) buffer1#14 )
   (byte) flip::srcIdx#0 ← (byte) 0
   (byte) flip::dstIdx#0 ← (byte) 15
   (byte) flip::r#0 ← (byte) 16
   to:flip::@1
-flip::@1: from @11 flip
-  (byte) flip::r#4 ← phi( @11/(byte) flip::r#1 flip/(byte) flip::r#0 )
-  (byte[256]) buffer1#6 ← phi( @11/(byte[256]) buffer1#9 flip/(byte[256]) buffer1#10 )
-  (byte) flip::srcIdx#3 ← phi( @11/(byte) flip::srcIdx#4 flip/(byte) flip::srcIdx#0 )
-  (byte[256]) buffer2#3 ← phi( @11/(byte[256]) buffer2#5 flip/(byte[256]) buffer2#6 )
-  (byte) flip::dstIdx#5 ← phi( @11/(byte) flip::dstIdx#2 flip/(byte) flip::dstIdx#0 )
+flip::@1: from @8 flip
+  (byte) flip::r#4 ← phi( @8/(byte) flip::r#1 flip/(byte) flip::r#0 )
+  (byte[256]) buffer1#6 ← phi( @8/(byte[256]) buffer1#10 flip/(byte[256]) buffer1#11 )
+  (byte) flip::srcIdx#3 ← phi( @8/(byte) flip::srcIdx#4 flip/(byte) flip::srcIdx#0 )
+  (byte[256]) buffer2#3 ← phi( @8/(byte[256]) buffer2#5 flip/(byte[256]) buffer2#6 )
+  (byte) flip::dstIdx#5 ← phi( @8/(byte) flip::dstIdx#2 flip/(byte) flip::dstIdx#0 )
   (byte) flip::c#0 ← (byte) 16
   to:flip::@2
 flip::@2: from flip::@1 flip::@2
@@ -624,43 +668,43 @@ flip::@2: from flip::@1 flip::@2
   (byte) flip::c#1 ← -- (byte) flip::c#2
   (boolean~) flip::$2 ← (byte) flip::c#1 != (byte) 0
   if((boolean~) flip::$2) goto flip::@2
-  to:@11
-@11: from flip::@2
+  to:@8
+@8: from flip::@2
   (byte[256]) buffer2#5 ← phi( flip::@2/(byte[256]) buffer2#1 )
   (byte) flip::srcIdx#4 ← phi( flip::@2/(byte) flip::srcIdx#1 )
-  (byte[256]) buffer1#9 ← phi( flip::@2/(byte[256]) buffer1#2 )
+  (byte[256]) buffer1#10 ← phi( flip::@2/(byte[256]) buffer1#2 )
   (byte) flip::r#2 ← phi( flip::@2/(byte) flip::r#3 )
   (byte) flip::dstIdx#4 ← phi( flip::@2/(byte) flip::dstIdx#1 )
   (byte) flip::dstIdx#2 ← -- (byte) flip::dstIdx#4
   (byte) flip::r#1 ← -- (byte) flip::r#2
   (boolean~) flip::$3 ← (byte) flip::r#1 != (byte) 0
   if((boolean~) flip::$3) goto flip::@1
-  to:@12
-@12: from @11
-  (byte[256]) buffer2#4 ← phi( @11/(byte[256]) buffer2#5 )
-  (byte[256]) buffer1#7 ← phi( @11/(byte[256]) buffer1#9 )
+  to:@9
+@9: from @8
+  (byte[256]) buffer2#4 ← phi( @8/(byte[256]) buffer2#5 )
+  (byte[256]) buffer1#7 ← phi( @8/(byte[256]) buffer1#10 )
   (byte) flip::i#0 ← (byte) 0
   to:flip::@3
-flip::@3: from @12 flip::@3
-  (byte[256]) buffer1#3 ← phi( @12/(byte[256]) buffer1#7 flip::@3/(byte[256]) buffer1#3 )
-  (byte) flip::i#2 ← phi( @12/(byte) flip::i#0 flip::@3/(byte) flip::i#1 )
-  (byte[256]) buffer2#2 ← phi( @12/(byte[256]) buffer2#4 flip::@3/(byte[256]) buffer2#2 )
+flip::@3: from @9 flip::@3
+  (byte[256]) buffer1#3 ← phi( @9/(byte[256]) buffer1#7 flip::@3/(byte[256]) buffer1#3 )
+  (byte) flip::i#2 ← phi( @9/(byte) flip::i#0 flip::@3/(byte) flip::i#1 )
+  (byte[256]) buffer2#2 ← phi( @9/(byte[256]) buffer2#4 flip::@3/(byte[256]) buffer2#2 )
   (byte~) flip::$4 ← (byte[256]) buffer2#2 *idx (byte) flip::i#2
   *((byte[256]) buffer1#3 + (byte) flip::i#2) ← (byte~) flip::$4
   (byte) flip::i#1 ← ++ (byte) flip::i#2
   (boolean~) flip::$5 ← (byte) flip::i#1 != (byte) 0
   if((boolean~) flip::$5) goto flip::@3
-  to:@13
-@13: from flip::@3
+  to:@10
+@10: from flip::@3
   to:flip::@return
-flip::@return: from @13
+flip::@return: from @10
   return 
   to:@RETURN
-@14: from @10
-  to:@17
-plot: from @19
-  (byte[256]) buffer1#12 ← phi( @19/(byte[256]) buffer1#14 )
-  (byte[1000]) SCREEN#1 ← phi( @19/(byte[1000]) SCREEN#2 )
+@11: from @7
+  to:@14
+plot: from @17
+  (byte[256]) buffer1#13 ← phi( @17/(byte[256]) buffer1#15 )
+  (byte[1000]) SCREEN#1 ← phi( @17/(byte[1000]) SCREEN#2 )
   (byte~) plot::$0 ← (byte) 5 * (byte) 40
   (byte*~) plot::$1 ← (byte[1000]) SCREEN#1 + (byte~) plot::$0
   (byte*~) plot::$2 ← (byte*~) plot::$1 + (byte) 12
@@ -668,11 +712,11 @@ plot: from @19
   (byte) plot::y#0 ← (byte) 16
   (byte) plot::i#0 ← (byte) 0
   to:plot::@1
-plot::@1: from @15 plot
-  (byte) plot::y#4 ← phi( @15/(byte) plot::y#1 plot/(byte) plot::y#0 )
-  (byte[256]) buffer1#8 ← phi( @15/(byte[256]) buffer1#11 plot/(byte[256]) buffer1#12 )
-  (byte) plot::i#3 ← phi( @15/(byte) plot::i#4 plot/(byte) plot::i#0 )
-  (byte*) plot::line#4 ← phi( @15/(byte*) plot::line#1 plot/(byte*) plot::line#0 )
+plot::@1: from @12 plot
+  (byte) plot::y#4 ← phi( @12/(byte) plot::y#1 plot/(byte) plot::y#0 )
+  (byte[256]) buffer1#8 ← phi( @12/(byte[256]) buffer1#12 plot/(byte[256]) buffer1#13 )
+  (byte) plot::i#3 ← phi( @12/(byte) plot::i#4 plot/(byte) plot::i#0 )
+  (byte*) plot::line#4 ← phi( @12/(byte*) plot::line#1 plot/(byte*) plot::line#0 )
   (byte) plot::x#0 ← (byte) 0
   to:plot::@2
 plot::@2: from plot::@1 plot::@2
@@ -687,10 +731,10 @@ plot::@2: from plot::@1 plot::@2
   (byte) plot::x#1 ← ++ (byte) plot::x#2
   (boolean~) plot::$4 ← (byte) plot::x#1 < (byte) 16
   if((boolean~) plot::$4) goto plot::@2
-  to:@15
-@15: from plot::@2
+  to:@12
+@12: from plot::@2
   (byte) plot::i#4 ← phi( plot::@2/(byte) plot::i#1 )
-  (byte[256]) buffer1#11 ← phi( plot::@2/(byte[256]) buffer1#4 )
+  (byte[256]) buffer1#12 ← phi( plot::@2/(byte[256]) buffer1#4 )
   (byte) plot::y#2 ← phi( plot::@2/(byte) plot::y#3 )
   (byte*) plot::line#3 ← phi( plot::@2/(byte*) plot::line#2 )
   (byte*~) plot::$5 ← (byte*) plot::line#3 + (byte) 40
@@ -698,15 +742,15 @@ plot::@2: from plot::@1 plot::@2
   (byte) plot::y#1 ← -- (byte) plot::y#2
   (boolean~) plot::$6 ← (byte) plot::y#1 != (byte) 0
   if((boolean~) plot::$6) goto plot::@1
-  to:@16
-@16: from @15
+  to:@13
+@13: from @12
   to:plot::@return
-plot::@return: from @16
+plot::@return: from @13
   return 
   to:@RETURN
-@17: from @14
+@14: from @11
   to:@END
-@END: from @17
+@END: from @14
 
 CONTROL FLOW GRAPH WITH ASSIGNMENT CALL & RETURN
 @BEGIN: from
@@ -714,90 +758,104 @@ CONTROL FLOW GRAPH WITH ASSIGNMENT CALL & RETURN
   (byte[256]) buffer1#0 ← (word) 4096
   (byte[256]) buffer2#0 ← (word) 4352
   (byte*) RASTER#0 ← (word) 53266
-  call prepare param-assignment
-  to:@18
-@18: from @BEGIN
-  (byte[256]) buffer2#14 ← phi( @BEGIN/(byte[256]) buffer2#0 )
-  (byte[256]) buffer1#21 ← phi( @BEGIN/(byte[256]) buffer1#0 )
-  (byte[1000]) SCREEN#10 ← phi( @BEGIN/(byte[1000]) SCREEN#0 )
-  (byte*) RASTER#7 ← phi( @BEGIN/(byte*) RASTER#0 )
-  to:@1
-@1: from @18 @20
-  (byte[256]) buffer1#20 ← phi( @18/(byte[256]) buffer1#21 @20/(byte[256]) buffer1#22 )
-  (byte[256]) buffer2#13 ← phi( @18/(byte[256]) buffer2#14 @20/(byte[256]) buffer2#15 )
-  (byte[1000]) SCREEN#9 ← phi( @18/(byte[1000]) SCREEN#10 @20/(byte[1000]) SCREEN#11 )
-  (byte*) RASTER#5 ← phi( @18/(byte*) RASTER#7 @20/(byte*) RASTER#8 )
-  (byte) c#0 ← (byte) 25
-  to:@2
-@2: from @1 @6
-  (byte[256]) buffer2#12 ← phi( @1/(byte[256]) buffer2#13 @6/(byte[256]) buffer2#8 )
-  (byte[256]) buffer1#19 ← phi( @1/(byte[256]) buffer1#20 @6/(byte[256]) buffer1#15 )
-  (byte[1000]) SCREEN#8 ← phi( @1/(byte[1000]) SCREEN#9 @6/(byte[1000]) SCREEN#4 )
-  (byte) c#6 ← phi( @1/(byte) c#0 @6/(byte) c#1 )
-  (byte*) RASTER#3 ← phi( @1/(byte*) RASTER#5 @6/(byte*) RASTER#6 )
-  to:@3
-@3: from @2 @3
-  (byte[256]) buffer1#18 ← phi( @2/(byte[256]) buffer1#19 @3/(byte[256]) buffer1#18 )
-  (byte[256]) buffer2#11 ← phi( @2/(byte[256]) buffer2#12 @3/(byte[256]) buffer2#11 )
-  (byte[1000]) SCREEN#7 ← phi( @2/(byte[1000]) SCREEN#8 @3/(byte[1000]) SCREEN#7 )
-  (byte) c#5 ← phi( @2/(byte) c#6 @3/(byte) c#5 )
-  (byte*) RASTER#1 ← phi( @2/(byte*) RASTER#3 @3/(byte*) RASTER#1 )
-  (byte~) $1 ← * (byte*) RASTER#1
-  (boolean~) $2 ← (byte~) $1 != (byte) 254
-  if((boolean~) $2) goto @3
+  call main param-assignment
+  to:@15
+@15: from @BEGIN
   to:@5
-@5: from @3
-  (byte[256]) buffer2#10 ← phi( @3/(byte[256]) buffer2#11 )
-  (byte[256]) buffer1#17 ← phi( @3/(byte[256]) buffer1#18 )
-  (byte[1000]) SCREEN#6 ← phi( @3/(byte[1000]) SCREEN#7 )
-  (byte) c#4 ← phi( @3/(byte) c#5 )
-  (byte*) RASTER#4 ← phi( @3/(byte*) RASTER#1 )
-  to:@4
-@4: from @4 @5
-  (byte[256]) buffer1#16 ← phi( @4/(byte[256]) buffer1#16 @5/(byte[256]) buffer1#17 )
-  (byte[256]) buffer2#9 ← phi( @4/(byte[256]) buffer2#9 @5/(byte[256]) buffer2#10 )
-  (byte[1000]) SCREEN#5 ← phi( @4/(byte[1000]) SCREEN#5 @5/(byte[1000]) SCREEN#6 )
-  (byte) c#3 ← phi( @4/(byte) c#3 @5/(byte) c#4 )
-  (byte*) RASTER#2 ← phi( @4/(byte*) RASTER#2 @5/(byte*) RASTER#4 )
-  (byte~) $3 ← * (byte*) RASTER#2
-  (boolean~) $4 ← (byte~) $3 != (byte) 255
-  if((boolean~) $4) goto @4
-  to:@6
-@6: from @4
-  (byte[256]) buffer2#8 ← phi( @4/(byte[256]) buffer2#9 )
-  (byte[256]) buffer1#15 ← phi( @4/(byte[256]) buffer1#16 )
-  (byte[1000]) SCREEN#4 ← phi( @4/(byte[1000]) SCREEN#5 )
-  (byte*) RASTER#6 ← phi( @4/(byte*) RASTER#2 )
-  (byte) c#2 ← phi( @4/(byte) c#3 )
-  (byte) c#1 ← -- (byte) c#2
-  (boolean~) $5 ← (byte) c#1 != (byte) 0
-  if((boolean~) $5) goto @2
-  to:@7
-@7: from @6
-  (byte*) RASTER#10 ← phi( @6/(byte*) RASTER#6 )
-  (byte[256]) buffer1#13 ← phi( @6/(byte[256]) buffer1#15 )
-  (byte[256]) buffer2#7 ← phi( @6/(byte[256]) buffer2#8 )
-  (byte[1000]) SCREEN#3 ← phi( @6/(byte[1000]) SCREEN#4 )
+main: from @BEGIN
+  (byte[256]) buffer2#16 ← phi( @BEGIN/(byte[256]) buffer2#0 )
+  (byte[1000]) SCREEN#12 ← phi( @BEGIN/(byte[1000]) SCREEN#0 )
+  (byte*) RASTER#9 ← phi( @BEGIN/(byte*) RASTER#0 )
+  (byte[256]) buffer1#9 ← phi( @BEGIN/(byte[256]) buffer1#0 )
+  call prepare param-assignment
+  to:@16
+@16: from main
+  (byte[256]) buffer2#14 ← phi( main/(byte[256]) buffer2#16 )
+  (byte[256]) buffer1#22 ← phi( main/(byte[256]) buffer1#9 )
+  (byte[1000]) SCREEN#10 ← phi( main/(byte[1000]) SCREEN#12 )
+  (byte*) RASTER#7 ← phi( main/(byte*) RASTER#9 )
+  to:main::@1
+main::@1: from @16 @18
+  (byte[256]) buffer1#21 ← phi( @16/(byte[256]) buffer1#22 @18/(byte[256]) buffer1#23 )
+  (byte[256]) buffer2#13 ← phi( @16/(byte[256]) buffer2#14 @18/(byte[256]) buffer2#15 )
+  (byte[1000]) SCREEN#9 ← phi( @16/(byte[1000]) SCREEN#10 @18/(byte[1000]) SCREEN#11 )
+  (byte*) RASTER#6 ← phi( @16/(byte*) RASTER#7 @18/(byte*) RASTER#8 )
+  (byte) main::c#0 ← (byte) 25
+  to:main::@2
+main::@2: from @2 main::@1
+  (byte[256]) buffer2#12 ← phi( @2/(byte[256]) buffer2#8 main::@1/(byte[256]) buffer2#13 )
+  (byte[256]) buffer1#20 ← phi( @2/(byte[256]) buffer1#16 main::@1/(byte[256]) buffer1#21 )
+  (byte[1000]) SCREEN#8 ← phi( @2/(byte[1000]) SCREEN#4 main::@1/(byte[1000]) SCREEN#9 )
+  (byte) main::c#6 ← phi( @2/(byte) main::c#1 main::@1/(byte) main::c#0 )
+  (byte*) RASTER#3 ← phi( @2/(byte*) RASTER#5 main::@1/(byte*) RASTER#6 )
+  to:main::@3
+main::@3: from main::@2 main::@3
+  (byte[256]) buffer1#19 ← phi( main::@2/(byte[256]) buffer1#20 main::@3/(byte[256]) buffer1#19 )
+  (byte[256]) buffer2#11 ← phi( main::@2/(byte[256]) buffer2#12 main::@3/(byte[256]) buffer2#11 )
+  (byte[1000]) SCREEN#7 ← phi( main::@2/(byte[1000]) SCREEN#8 main::@3/(byte[1000]) SCREEN#7 )
+  (byte) main::c#5 ← phi( main::@2/(byte) main::c#6 main::@3/(byte) main::c#5 )
+  (byte*) RASTER#1 ← phi( main::@2/(byte*) RASTER#3 main::@3/(byte*) RASTER#1 )
+  (byte~) main::$1 ← * (byte*) RASTER#1
+  (boolean~) main::$2 ← (byte~) main::$1 != (byte) 254
+  if((boolean~) main::$2) goto main::@3
+  to:@1
+@1: from main::@3
+  (byte[256]) buffer2#10 ← phi( main::@3/(byte[256]) buffer2#11 )
+  (byte[256]) buffer1#18 ← phi( main::@3/(byte[256]) buffer1#19 )
+  (byte[1000]) SCREEN#6 ← phi( main::@3/(byte[1000]) SCREEN#7 )
+  (byte) main::c#4 ← phi( main::@3/(byte) main::c#5 )
+  (byte*) RASTER#4 ← phi( main::@3/(byte*) RASTER#1 )
+  to:main::@4
+main::@4: from @1 main::@4
+  (byte[256]) buffer1#17 ← phi( @1/(byte[256]) buffer1#18 main::@4/(byte[256]) buffer1#17 )
+  (byte[256]) buffer2#9 ← phi( @1/(byte[256]) buffer2#10 main::@4/(byte[256]) buffer2#9 )
+  (byte[1000]) SCREEN#5 ← phi( @1/(byte[1000]) SCREEN#6 main::@4/(byte[1000]) SCREEN#5 )
+  (byte) main::c#3 ← phi( @1/(byte) main::c#4 main::@4/(byte) main::c#3 )
+  (byte*) RASTER#2 ← phi( @1/(byte*) RASTER#4 main::@4/(byte*) RASTER#2 )
+  (byte~) main::$3 ← * (byte*) RASTER#2
+  (boolean~) main::$4 ← (byte~) main::$3 != (byte) 255
+  if((boolean~) main::$4) goto main::@4
+  to:@2
+@2: from main::@4
+  (byte[256]) buffer2#8 ← phi( main::@4/(byte[256]) buffer2#9 )
+  (byte[256]) buffer1#16 ← phi( main::@4/(byte[256]) buffer1#17 )
+  (byte[1000]) SCREEN#4 ← phi( main::@4/(byte[1000]) SCREEN#5 )
+  (byte*) RASTER#5 ← phi( main::@4/(byte*) RASTER#2 )
+  (byte) main::c#2 ← phi( main::@4/(byte) main::c#3 )
+  (byte) main::c#1 ← -- (byte) main::c#2
+  (boolean~) main::$5 ← (byte) main::c#1 != (byte) 0
+  if((boolean~) main::$5) goto main::@2
+  to:@3
+@3: from @2
+  (byte*) RASTER#11 ← phi( @2/(byte*) RASTER#5 )
+  (byte[256]) buffer1#14 ← phi( @2/(byte[256]) buffer1#16 )
+  (byte[256]) buffer2#7 ← phi( @2/(byte[256]) buffer2#8 )
+  (byte[1000]) SCREEN#3 ← phi( @2/(byte[1000]) SCREEN#4 )
   call flip param-assignment
-  to:@19
-@19: from @7
-  (byte[256]) buffer2#16 ← phi( @7/(byte[256]) buffer2#7 )
-  (byte*) RASTER#9 ← phi( @7/(byte*) RASTER#10 )
-  (byte[256]) buffer1#14 ← phi( @7/(byte[256]) buffer1#13 )
-  (byte[1000]) SCREEN#2 ← phi( @7/(byte[1000]) SCREEN#3 )
+  to:@17
+@17: from @3
+  (byte[256]) buffer2#17 ← phi( @3/(byte[256]) buffer2#7 )
+  (byte*) RASTER#10 ← phi( @3/(byte*) RASTER#11 )
+  (byte[256]) buffer1#15 ← phi( @3/(byte[256]) buffer1#14 )
+  (byte[1000]) SCREEN#2 ← phi( @3/(byte[1000]) SCREEN#3 )
   call plot param-assignment
-  to:@20
-@20: from @19
-  (byte[256]) buffer2#15 ← phi( @19/(byte[256]) buffer2#16 )
-  (byte[256]) buffer1#22 ← phi( @19/(byte[256]) buffer1#14 )
-  (byte[1000]) SCREEN#11 ← phi( @19/(byte[1000]) SCREEN#2 )
-  (byte*) RASTER#8 ← phi( @19/(byte*) RASTER#9 )
-  if(true) goto @1
-  to:@8
-@8: from @20
-  to:@10
-prepare: from @BEGIN
-  (byte[256]) buffer1#5 ← phi( @BEGIN/(byte[256]) buffer1#0 )
+  to:@18
+@18: from @17
+  (byte[256]) buffer2#15 ← phi( @17/(byte[256]) buffer2#17 )
+  (byte[256]) buffer1#23 ← phi( @17/(byte[256]) buffer1#15 )
+  (byte[1000]) SCREEN#11 ← phi( @17/(byte[1000]) SCREEN#2 )
+  (byte*) RASTER#8 ← phi( @17/(byte*) RASTER#10 )
+  if(true) goto main::@1
+  to:@4
+@4: from @18
+  to:main::@return
+main::@return: from @4
+  return 
+  to:@RETURN
+@5: from @15
+  to:@7
+prepare: from main
+  (byte[256]) buffer1#5 ← phi( main/(byte[256]) buffer1#9 )
   (byte) prepare::i#0 ← (byte) 0
   to:prepare::@1
 prepare::@1: from prepare prepare::@1
@@ -807,27 +865,27 @@ prepare::@1: from prepare prepare::@1
   (byte) prepare::i#1 ← ++ (byte) prepare::i#2
   (boolean~) prepare::$0 ← (byte) prepare::i#1 != (byte) 0
   if((boolean~) prepare::$0) goto prepare::@1
-  to:@9
-@9: from prepare::@1
+  to:@6
+@6: from prepare::@1
   to:prepare::@return
-prepare::@return: from @9
+prepare::@return: from @6
   return 
   to:@RETURN
-@10: from @8
-  to:@14
-flip: from @7
-  (byte[256]) buffer2#6 ← phi( @7/(byte[256]) buffer2#7 )
-  (byte[256]) buffer1#10 ← phi( @7/(byte[256]) buffer1#13 )
+@7: from @5
+  to:@11
+flip: from @3
+  (byte[256]) buffer2#6 ← phi( @3/(byte[256]) buffer2#7 )
+  (byte[256]) buffer1#11 ← phi( @3/(byte[256]) buffer1#14 )
   (byte) flip::srcIdx#0 ← (byte) 0
   (byte) flip::dstIdx#0 ← (byte) 15
   (byte) flip::r#0 ← (byte) 16
   to:flip::@1
-flip::@1: from @11 flip
-  (byte) flip::r#4 ← phi( @11/(byte) flip::r#1 flip/(byte) flip::r#0 )
-  (byte[256]) buffer1#6 ← phi( @11/(byte[256]) buffer1#9 flip/(byte[256]) buffer1#10 )
-  (byte) flip::srcIdx#3 ← phi( @11/(byte) flip::srcIdx#4 flip/(byte) flip::srcIdx#0 )
-  (byte[256]) buffer2#3 ← phi( @11/(byte[256]) buffer2#5 flip/(byte[256]) buffer2#6 )
-  (byte) flip::dstIdx#5 ← phi( @11/(byte) flip::dstIdx#2 flip/(byte) flip::dstIdx#0 )
+flip::@1: from @8 flip
+  (byte) flip::r#4 ← phi( @8/(byte) flip::r#1 flip/(byte) flip::r#0 )
+  (byte[256]) buffer1#6 ← phi( @8/(byte[256]) buffer1#10 flip/(byte[256]) buffer1#11 )
+  (byte) flip::srcIdx#3 ← phi( @8/(byte) flip::srcIdx#4 flip/(byte) flip::srcIdx#0 )
+  (byte[256]) buffer2#3 ← phi( @8/(byte[256]) buffer2#5 flip/(byte[256]) buffer2#6 )
+  (byte) flip::dstIdx#5 ← phi( @8/(byte) flip::dstIdx#2 flip/(byte) flip::dstIdx#0 )
   (byte) flip::c#0 ← (byte) 16
   to:flip::@2
 flip::@2: from flip::@1 flip::@2
@@ -845,43 +903,43 @@ flip::@2: from flip::@1 flip::@2
   (byte) flip::c#1 ← -- (byte) flip::c#2
   (boolean~) flip::$2 ← (byte) flip::c#1 != (byte) 0
   if((boolean~) flip::$2) goto flip::@2
-  to:@11
-@11: from flip::@2
+  to:@8
+@8: from flip::@2
   (byte[256]) buffer2#5 ← phi( flip::@2/(byte[256]) buffer2#1 )
   (byte) flip::srcIdx#4 ← phi( flip::@2/(byte) flip::srcIdx#1 )
-  (byte[256]) buffer1#9 ← phi( flip::@2/(byte[256]) buffer1#2 )
+  (byte[256]) buffer1#10 ← phi( flip::@2/(byte[256]) buffer1#2 )
   (byte) flip::r#2 ← phi( flip::@2/(byte) flip::r#3 )
   (byte) flip::dstIdx#4 ← phi( flip::@2/(byte) flip::dstIdx#1 )
   (byte) flip::dstIdx#2 ← -- (byte) flip::dstIdx#4
   (byte) flip::r#1 ← -- (byte) flip::r#2
   (boolean~) flip::$3 ← (byte) flip::r#1 != (byte) 0
   if((boolean~) flip::$3) goto flip::@1
-  to:@12
-@12: from @11
-  (byte[256]) buffer2#4 ← phi( @11/(byte[256]) buffer2#5 )
-  (byte[256]) buffer1#7 ← phi( @11/(byte[256]) buffer1#9 )
+  to:@9
+@9: from @8
+  (byte[256]) buffer2#4 ← phi( @8/(byte[256]) buffer2#5 )
+  (byte[256]) buffer1#7 ← phi( @8/(byte[256]) buffer1#10 )
   (byte) flip::i#0 ← (byte) 0
   to:flip::@3
-flip::@3: from @12 flip::@3
-  (byte[256]) buffer1#3 ← phi( @12/(byte[256]) buffer1#7 flip::@3/(byte[256]) buffer1#3 )
-  (byte) flip::i#2 ← phi( @12/(byte) flip::i#0 flip::@3/(byte) flip::i#1 )
-  (byte[256]) buffer2#2 ← phi( @12/(byte[256]) buffer2#4 flip::@3/(byte[256]) buffer2#2 )
+flip::@3: from @9 flip::@3
+  (byte[256]) buffer1#3 ← phi( @9/(byte[256]) buffer1#7 flip::@3/(byte[256]) buffer1#3 )
+  (byte) flip::i#2 ← phi( @9/(byte) flip::i#0 flip::@3/(byte) flip::i#1 )
+  (byte[256]) buffer2#2 ← phi( @9/(byte[256]) buffer2#4 flip::@3/(byte[256]) buffer2#2 )
   (byte~) flip::$4 ← (byte[256]) buffer2#2 *idx (byte) flip::i#2
   *((byte[256]) buffer1#3 + (byte) flip::i#2) ← (byte~) flip::$4
   (byte) flip::i#1 ← ++ (byte) flip::i#2
   (boolean~) flip::$5 ← (byte) flip::i#1 != (byte) 0
   if((boolean~) flip::$5) goto flip::@3
-  to:@13
-@13: from flip::@3
+  to:@10
+@10: from flip::@3
   to:flip::@return
-flip::@return: from @13
+flip::@return: from @10
   return 
   to:@RETURN
-@14: from @10
-  to:@17
-plot: from @19
-  (byte[256]) buffer1#12 ← phi( @19/(byte[256]) buffer1#14 )
-  (byte[1000]) SCREEN#1 ← phi( @19/(byte[1000]) SCREEN#2 )
+@11: from @7
+  to:@14
+plot: from @17
+  (byte[256]) buffer1#13 ← phi( @17/(byte[256]) buffer1#15 )
+  (byte[1000]) SCREEN#1 ← phi( @17/(byte[1000]) SCREEN#2 )
   (byte~) plot::$0 ← (byte) 5 * (byte) 40
   (byte*~) plot::$1 ← (byte[1000]) SCREEN#1 + (byte~) plot::$0
   (byte*~) plot::$2 ← (byte*~) plot::$1 + (byte) 12
@@ -889,11 +947,11 @@ plot: from @19
   (byte) plot::y#0 ← (byte) 16
   (byte) plot::i#0 ← (byte) 0
   to:plot::@1
-plot::@1: from @15 plot
-  (byte) plot::y#4 ← phi( @15/(byte) plot::y#1 plot/(byte) plot::y#0 )
-  (byte[256]) buffer1#8 ← phi( @15/(byte[256]) buffer1#11 plot/(byte[256]) buffer1#12 )
-  (byte) plot::i#3 ← phi( @15/(byte) plot::i#4 plot/(byte) plot::i#0 )
-  (byte*) plot::line#4 ← phi( @15/(byte*) plot::line#1 plot/(byte*) plot::line#0 )
+plot::@1: from @12 plot
+  (byte) plot::y#4 ← phi( @12/(byte) plot::y#1 plot/(byte) plot::y#0 )
+  (byte[256]) buffer1#8 ← phi( @12/(byte[256]) buffer1#12 plot/(byte[256]) buffer1#13 )
+  (byte) plot::i#3 ← phi( @12/(byte) plot::i#4 plot/(byte) plot::i#0 )
+  (byte*) plot::line#4 ← phi( @12/(byte*) plot::line#1 plot/(byte*) plot::line#0 )
   (byte) plot::x#0 ← (byte) 0
   to:plot::@2
 plot::@2: from plot::@1 plot::@2
@@ -908,10 +966,10 @@ plot::@2: from plot::@1 plot::@2
   (byte) plot::x#1 ← ++ (byte) plot::x#2
   (boolean~) plot::$4 ← (byte) plot::x#1 < (byte) 16
   if((boolean~) plot::$4) goto plot::@2
-  to:@15
-@15: from plot::@2
+  to:@12
+@12: from plot::@2
   (byte) plot::i#4 ← phi( plot::@2/(byte) plot::i#1 )
-  (byte[256]) buffer1#11 ← phi( plot::@2/(byte[256]) buffer1#4 )
+  (byte[256]) buffer1#12 ← phi( plot::@2/(byte[256]) buffer1#4 )
   (byte) plot::y#2 ← phi( plot::@2/(byte) plot::y#3 )
   (byte*) plot::line#3 ← phi( plot::@2/(byte*) plot::line#2 )
   (byte*~) plot::$5 ← (byte*) plot::line#3 + (byte) 40
@@ -919,23 +977,25 @@ plot::@2: from plot::@1 plot::@2
   (byte) plot::y#1 ← -- (byte) plot::y#2
   (boolean~) plot::$6 ← (byte) plot::y#1 != (byte) 0
   if((boolean~) plot::$6) goto plot::@1
-  to:@16
-@16: from @15
+  to:@13
+@13: from @12
   to:plot::@return
-plot::@return: from @16
+plot::@return: from @13
   return 
   to:@RETURN
-@17: from @14
+@14: from @11
   to:@END
-@END: from @17
+@END: from @14
 
-Culled Empty Block (label) @8
-Culled Empty Block (label) @9
+Culled Empty Block (label) @15
+Culled Empty Block (label) @4
+Culled Empty Block (label) @5
+Culled Empty Block (label) @6
+Culled Empty Block (label) @7
 Culled Empty Block (label) @10
+Culled Empty Block (label) @11
 Culled Empty Block (label) @13
 Culled Empty Block (label) @14
-Culled Empty Block (label) @16
-Culled Empty Block (label) @17
 Succesful SSA optimization Pass2CullEmptyBlocks
 CONTROL FLOW GRAPH
 @BEGIN: from
@@ -943,88 +1003,98 @@ CONTROL FLOW GRAPH
   (byte[256]) buffer1#0 ← (word) 4096
   (byte[256]) buffer2#0 ← (word) 4352
   (byte*) RASTER#0 ← (word) 53266
-  call prepare param-assignment
-  to:@18
-@18: from @BEGIN
-  (byte[256]) buffer2#14 ← phi( @BEGIN/(byte[256]) buffer2#0 )
-  (byte[256]) buffer1#21 ← phi( @BEGIN/(byte[256]) buffer1#0 )
-  (byte[1000]) SCREEN#10 ← phi( @BEGIN/(byte[1000]) SCREEN#0 )
-  (byte*) RASTER#7 ← phi( @BEGIN/(byte*) RASTER#0 )
-  to:@1
-@1: from @18 @20
-  (byte[256]) buffer1#20 ← phi( @18/(byte[256]) buffer1#21 @20/(byte[256]) buffer1#22 )
-  (byte[256]) buffer2#13 ← phi( @18/(byte[256]) buffer2#14 @20/(byte[256]) buffer2#15 )
-  (byte[1000]) SCREEN#9 ← phi( @18/(byte[1000]) SCREEN#10 @20/(byte[1000]) SCREEN#11 )
-  (byte*) RASTER#5 ← phi( @18/(byte*) RASTER#7 @20/(byte*) RASTER#8 )
-  (byte) c#0 ← (byte) 25
-  to:@2
-@2: from @1 @6
-  (byte[256]) buffer2#12 ← phi( @1/(byte[256]) buffer2#13 @6/(byte[256]) buffer2#8 )
-  (byte[256]) buffer1#19 ← phi( @1/(byte[256]) buffer1#20 @6/(byte[256]) buffer1#15 )
-  (byte[1000]) SCREEN#8 ← phi( @1/(byte[1000]) SCREEN#9 @6/(byte[1000]) SCREEN#4 )
-  (byte) c#6 ← phi( @1/(byte) c#0 @6/(byte) c#1 )
-  (byte*) RASTER#3 ← phi( @1/(byte*) RASTER#5 @6/(byte*) RASTER#6 )
-  to:@3
-@3: from @2 @3
-  (byte[256]) buffer1#18 ← phi( @2/(byte[256]) buffer1#19 @3/(byte[256]) buffer1#18 )
-  (byte[256]) buffer2#11 ← phi( @2/(byte[256]) buffer2#12 @3/(byte[256]) buffer2#11 )
-  (byte[1000]) SCREEN#7 ← phi( @2/(byte[1000]) SCREEN#8 @3/(byte[1000]) SCREEN#7 )
-  (byte) c#5 ← phi( @2/(byte) c#6 @3/(byte) c#5 )
-  (byte*) RASTER#1 ← phi( @2/(byte*) RASTER#3 @3/(byte*) RASTER#1 )
-  (byte~) $1 ← * (byte*) RASTER#1
-  (boolean~) $2 ← (byte~) $1 != (byte) 254
-  if((boolean~) $2) goto @3
-  to:@5
-@5: from @3
-  (byte[256]) buffer2#10 ← phi( @3/(byte[256]) buffer2#11 )
-  (byte[256]) buffer1#17 ← phi( @3/(byte[256]) buffer1#18 )
-  (byte[1000]) SCREEN#6 ← phi( @3/(byte[1000]) SCREEN#7 )
-  (byte) c#4 ← phi( @3/(byte) c#5 )
-  (byte*) RASTER#4 ← phi( @3/(byte*) RASTER#1 )
-  to:@4
-@4: from @4 @5
-  (byte[256]) buffer1#16 ← phi( @4/(byte[256]) buffer1#16 @5/(byte[256]) buffer1#17 )
-  (byte[256]) buffer2#9 ← phi( @4/(byte[256]) buffer2#9 @5/(byte[256]) buffer2#10 )
-  (byte[1000]) SCREEN#5 ← phi( @4/(byte[1000]) SCREEN#5 @5/(byte[1000]) SCREEN#6 )
-  (byte) c#3 ← phi( @4/(byte) c#3 @5/(byte) c#4 )
-  (byte*) RASTER#2 ← phi( @4/(byte*) RASTER#2 @5/(byte*) RASTER#4 )
-  (byte~) $3 ← * (byte*) RASTER#2
-  (boolean~) $4 ← (byte~) $3 != (byte) 255
-  if((boolean~) $4) goto @4
-  to:@6
-@6: from @4
-  (byte[256]) buffer2#8 ← phi( @4/(byte[256]) buffer2#9 )
-  (byte[256]) buffer1#15 ← phi( @4/(byte[256]) buffer1#16 )
-  (byte[1000]) SCREEN#4 ← phi( @4/(byte[1000]) SCREEN#5 )
-  (byte*) RASTER#6 ← phi( @4/(byte*) RASTER#2 )
-  (byte) c#2 ← phi( @4/(byte) c#3 )
-  (byte) c#1 ← -- (byte) c#2
-  (boolean~) $5 ← (byte) c#1 != (byte) 0
-  if((boolean~) $5) goto @2
-  to:@7
-@7: from @6
-  (byte*) RASTER#10 ← phi( @6/(byte*) RASTER#6 )
-  (byte[256]) buffer1#13 ← phi( @6/(byte[256]) buffer1#15 )
-  (byte[256]) buffer2#7 ← phi( @6/(byte[256]) buffer2#8 )
-  (byte[1000]) SCREEN#3 ← phi( @6/(byte[1000]) SCREEN#4 )
-  call flip param-assignment
-  to:@19
-@19: from @7
-  (byte[256]) buffer2#16 ← phi( @7/(byte[256]) buffer2#7 )
-  (byte*) RASTER#9 ← phi( @7/(byte*) RASTER#10 )
-  (byte[256]) buffer1#14 ← phi( @7/(byte[256]) buffer1#13 )
-  (byte[1000]) SCREEN#2 ← phi( @7/(byte[1000]) SCREEN#3 )
-  call plot param-assignment
-  to:@20
-@20: from @19
-  (byte[256]) buffer2#15 ← phi( @19/(byte[256]) buffer2#16 )
-  (byte[256]) buffer1#22 ← phi( @19/(byte[256]) buffer1#14 )
-  (byte[1000]) SCREEN#11 ← phi( @19/(byte[1000]) SCREEN#2 )
-  (byte*) RASTER#8 ← phi( @19/(byte*) RASTER#9 )
-  if(true) goto @1
+  call main param-assignment
   to:@END
-prepare: from @BEGIN
-  (byte[256]) buffer1#5 ← phi( @BEGIN/(byte[256]) buffer1#0 )
+main: from @BEGIN
+  (byte[256]) buffer2#16 ← phi( @BEGIN/(byte[256]) buffer2#0 )
+  (byte[1000]) SCREEN#12 ← phi( @BEGIN/(byte[1000]) SCREEN#0 )
+  (byte*) RASTER#9 ← phi( @BEGIN/(byte*) RASTER#0 )
+  (byte[256]) buffer1#9 ← phi( @BEGIN/(byte[256]) buffer1#0 )
+  call prepare param-assignment
+  to:@16
+@16: from main
+  (byte[256]) buffer2#14 ← phi( main/(byte[256]) buffer2#16 )
+  (byte[256]) buffer1#22 ← phi( main/(byte[256]) buffer1#9 )
+  (byte[1000]) SCREEN#10 ← phi( main/(byte[1000]) SCREEN#12 )
+  (byte*) RASTER#7 ← phi( main/(byte*) RASTER#9 )
+  to:main::@1
+main::@1: from @16 @18
+  (byte[256]) buffer1#21 ← phi( @16/(byte[256]) buffer1#22 @18/(byte[256]) buffer1#23 )
+  (byte[256]) buffer2#13 ← phi( @16/(byte[256]) buffer2#14 @18/(byte[256]) buffer2#15 )
+  (byte[1000]) SCREEN#9 ← phi( @16/(byte[1000]) SCREEN#10 @18/(byte[1000]) SCREEN#11 )
+  (byte*) RASTER#6 ← phi( @16/(byte*) RASTER#7 @18/(byte*) RASTER#8 )
+  (byte) main::c#0 ← (byte) 25
+  to:main::@2
+main::@2: from @2 main::@1
+  (byte[256]) buffer2#12 ← phi( @2/(byte[256]) buffer2#8 main::@1/(byte[256]) buffer2#13 )
+  (byte[256]) buffer1#20 ← phi( @2/(byte[256]) buffer1#16 main::@1/(byte[256]) buffer1#21 )
+  (byte[1000]) SCREEN#8 ← phi( @2/(byte[1000]) SCREEN#4 main::@1/(byte[1000]) SCREEN#9 )
+  (byte) main::c#6 ← phi( @2/(byte) main::c#1 main::@1/(byte) main::c#0 )
+  (byte*) RASTER#3 ← phi( @2/(byte*) RASTER#5 main::@1/(byte*) RASTER#6 )
+  to:main::@3
+main::@3: from main::@2 main::@3
+  (byte[256]) buffer1#19 ← phi( main::@2/(byte[256]) buffer1#20 main::@3/(byte[256]) buffer1#19 )
+  (byte[256]) buffer2#11 ← phi( main::@2/(byte[256]) buffer2#12 main::@3/(byte[256]) buffer2#11 )
+  (byte[1000]) SCREEN#7 ← phi( main::@2/(byte[1000]) SCREEN#8 main::@3/(byte[1000]) SCREEN#7 )
+  (byte) main::c#5 ← phi( main::@2/(byte) main::c#6 main::@3/(byte) main::c#5 )
+  (byte*) RASTER#1 ← phi( main::@2/(byte*) RASTER#3 main::@3/(byte*) RASTER#1 )
+  (byte~) main::$1 ← * (byte*) RASTER#1
+  (boolean~) main::$2 ← (byte~) main::$1 != (byte) 254
+  if((boolean~) main::$2) goto main::@3
+  to:@1
+@1: from main::@3
+  (byte[256]) buffer2#10 ← phi( main::@3/(byte[256]) buffer2#11 )
+  (byte[256]) buffer1#18 ← phi( main::@3/(byte[256]) buffer1#19 )
+  (byte[1000]) SCREEN#6 ← phi( main::@3/(byte[1000]) SCREEN#7 )
+  (byte) main::c#4 ← phi( main::@3/(byte) main::c#5 )
+  (byte*) RASTER#4 ← phi( main::@3/(byte*) RASTER#1 )
+  to:main::@4
+main::@4: from @1 main::@4
+  (byte[256]) buffer1#17 ← phi( @1/(byte[256]) buffer1#18 main::@4/(byte[256]) buffer1#17 )
+  (byte[256]) buffer2#9 ← phi( @1/(byte[256]) buffer2#10 main::@4/(byte[256]) buffer2#9 )
+  (byte[1000]) SCREEN#5 ← phi( @1/(byte[1000]) SCREEN#6 main::@4/(byte[1000]) SCREEN#5 )
+  (byte) main::c#3 ← phi( @1/(byte) main::c#4 main::@4/(byte) main::c#3 )
+  (byte*) RASTER#2 ← phi( @1/(byte*) RASTER#4 main::@4/(byte*) RASTER#2 )
+  (byte~) main::$3 ← * (byte*) RASTER#2
+  (boolean~) main::$4 ← (byte~) main::$3 != (byte) 255
+  if((boolean~) main::$4) goto main::@4
+  to:@2
+@2: from main::@4
+  (byte[256]) buffer2#8 ← phi( main::@4/(byte[256]) buffer2#9 )
+  (byte[256]) buffer1#16 ← phi( main::@4/(byte[256]) buffer1#17 )
+  (byte[1000]) SCREEN#4 ← phi( main::@4/(byte[1000]) SCREEN#5 )
+  (byte*) RASTER#5 ← phi( main::@4/(byte*) RASTER#2 )
+  (byte) main::c#2 ← phi( main::@4/(byte) main::c#3 )
+  (byte) main::c#1 ← -- (byte) main::c#2
+  (boolean~) main::$5 ← (byte) main::c#1 != (byte) 0
+  if((boolean~) main::$5) goto main::@2
+  to:@3
+@3: from @2
+  (byte*) RASTER#11 ← phi( @2/(byte*) RASTER#5 )
+  (byte[256]) buffer1#14 ← phi( @2/(byte[256]) buffer1#16 )
+  (byte[256]) buffer2#7 ← phi( @2/(byte[256]) buffer2#8 )
+  (byte[1000]) SCREEN#3 ← phi( @2/(byte[1000]) SCREEN#4 )
+  call flip param-assignment
+  to:@17
+@17: from @3
+  (byte[256]) buffer2#17 ← phi( @3/(byte[256]) buffer2#7 )
+  (byte*) RASTER#10 ← phi( @3/(byte*) RASTER#11 )
+  (byte[256]) buffer1#15 ← phi( @3/(byte[256]) buffer1#14 )
+  (byte[1000]) SCREEN#2 ← phi( @3/(byte[1000]) SCREEN#3 )
+  call plot param-assignment
+  to:@18
+@18: from @17
+  (byte[256]) buffer2#15 ← phi( @17/(byte[256]) buffer2#17 )
+  (byte[256]) buffer1#23 ← phi( @17/(byte[256]) buffer1#15 )
+  (byte[1000]) SCREEN#11 ← phi( @17/(byte[1000]) SCREEN#2 )
+  (byte*) RASTER#8 ← phi( @17/(byte*) RASTER#10 )
+  if(true) goto main::@1
+  to:main::@return
+main::@return: from @18
+  return 
+  to:@RETURN
+prepare: from main
+  (byte[256]) buffer1#5 ← phi( main/(byte[256]) buffer1#9 )
   (byte) prepare::i#0 ← (byte) 0
   to:prepare::@1
 prepare::@1: from prepare prepare::@1
@@ -1038,19 +1108,19 @@ prepare::@1: from prepare prepare::@1
 prepare::@return: from prepare::@1
   return 
   to:@RETURN
-flip: from @7
-  (byte[256]) buffer2#6 ← phi( @7/(byte[256]) buffer2#7 )
-  (byte[256]) buffer1#10 ← phi( @7/(byte[256]) buffer1#13 )
+flip: from @3
+  (byte[256]) buffer2#6 ← phi( @3/(byte[256]) buffer2#7 )
+  (byte[256]) buffer1#11 ← phi( @3/(byte[256]) buffer1#14 )
   (byte) flip::srcIdx#0 ← (byte) 0
   (byte) flip::dstIdx#0 ← (byte) 15
   (byte) flip::r#0 ← (byte) 16
   to:flip::@1
-flip::@1: from @11 flip
-  (byte) flip::r#4 ← phi( @11/(byte) flip::r#1 flip/(byte) flip::r#0 )
-  (byte[256]) buffer1#6 ← phi( @11/(byte[256]) buffer1#9 flip/(byte[256]) buffer1#10 )
-  (byte) flip::srcIdx#3 ← phi( @11/(byte) flip::srcIdx#4 flip/(byte) flip::srcIdx#0 )
-  (byte[256]) buffer2#3 ← phi( @11/(byte[256]) buffer2#5 flip/(byte[256]) buffer2#6 )
-  (byte) flip::dstIdx#5 ← phi( @11/(byte) flip::dstIdx#2 flip/(byte) flip::dstIdx#0 )
+flip::@1: from @8 flip
+  (byte) flip::r#4 ← phi( @8/(byte) flip::r#1 flip/(byte) flip::r#0 )
+  (byte[256]) buffer1#6 ← phi( @8/(byte[256]) buffer1#10 flip/(byte[256]) buffer1#11 )
+  (byte) flip::srcIdx#3 ← phi( @8/(byte) flip::srcIdx#4 flip/(byte) flip::srcIdx#0 )
+  (byte[256]) buffer2#3 ← phi( @8/(byte[256]) buffer2#5 flip/(byte[256]) buffer2#6 )
+  (byte) flip::dstIdx#5 ← phi( @8/(byte) flip::dstIdx#2 flip/(byte) flip::dstIdx#0 )
   (byte) flip::c#0 ← (byte) 16
   to:flip::@2
 flip::@2: from flip::@1 flip::@2
@@ -1068,27 +1138,27 @@ flip::@2: from flip::@1 flip::@2
   (byte) flip::c#1 ← -- (byte) flip::c#2
   (boolean~) flip::$2 ← (byte) flip::c#1 != (byte) 0
   if((boolean~) flip::$2) goto flip::@2
-  to:@11
-@11: from flip::@2
+  to:@8
+@8: from flip::@2
   (byte[256]) buffer2#5 ← phi( flip::@2/(byte[256]) buffer2#1 )
   (byte) flip::srcIdx#4 ← phi( flip::@2/(byte) flip::srcIdx#1 )
-  (byte[256]) buffer1#9 ← phi( flip::@2/(byte[256]) buffer1#2 )
+  (byte[256]) buffer1#10 ← phi( flip::@2/(byte[256]) buffer1#2 )
   (byte) flip::r#2 ← phi( flip::@2/(byte) flip::r#3 )
   (byte) flip::dstIdx#4 ← phi( flip::@2/(byte) flip::dstIdx#1 )
   (byte) flip::dstIdx#2 ← -- (byte) flip::dstIdx#4
   (byte) flip::r#1 ← -- (byte) flip::r#2
   (boolean~) flip::$3 ← (byte) flip::r#1 != (byte) 0
   if((boolean~) flip::$3) goto flip::@1
-  to:@12
-@12: from @11
-  (byte[256]) buffer2#4 ← phi( @11/(byte[256]) buffer2#5 )
-  (byte[256]) buffer1#7 ← phi( @11/(byte[256]) buffer1#9 )
+  to:@9
+@9: from @8
+  (byte[256]) buffer2#4 ← phi( @8/(byte[256]) buffer2#5 )
+  (byte[256]) buffer1#7 ← phi( @8/(byte[256]) buffer1#10 )
   (byte) flip::i#0 ← (byte) 0
   to:flip::@3
-flip::@3: from @12 flip::@3
-  (byte[256]) buffer1#3 ← phi( @12/(byte[256]) buffer1#7 flip::@3/(byte[256]) buffer1#3 )
-  (byte) flip::i#2 ← phi( @12/(byte) flip::i#0 flip::@3/(byte) flip::i#1 )
-  (byte[256]) buffer2#2 ← phi( @12/(byte[256]) buffer2#4 flip::@3/(byte[256]) buffer2#2 )
+flip::@3: from @9 flip::@3
+  (byte[256]) buffer1#3 ← phi( @9/(byte[256]) buffer1#7 flip::@3/(byte[256]) buffer1#3 )
+  (byte) flip::i#2 ← phi( @9/(byte) flip::i#0 flip::@3/(byte) flip::i#1 )
+  (byte[256]) buffer2#2 ← phi( @9/(byte[256]) buffer2#4 flip::@3/(byte[256]) buffer2#2 )
   (byte~) flip::$4 ← (byte[256]) buffer2#2 *idx (byte) flip::i#2
   *((byte[256]) buffer1#3 + (byte) flip::i#2) ← (byte~) flip::$4
   (byte) flip::i#1 ← ++ (byte) flip::i#2
@@ -1098,9 +1168,9 @@ flip::@3: from @12 flip::@3
 flip::@return: from flip::@3
   return 
   to:@RETURN
-plot: from @19
-  (byte[256]) buffer1#12 ← phi( @19/(byte[256]) buffer1#14 )
-  (byte[1000]) SCREEN#1 ← phi( @19/(byte[1000]) SCREEN#2 )
+plot: from @17
+  (byte[256]) buffer1#13 ← phi( @17/(byte[256]) buffer1#15 )
+  (byte[1000]) SCREEN#1 ← phi( @17/(byte[1000]) SCREEN#2 )
   (byte~) plot::$0 ← (byte) 5 * (byte) 40
   (byte*~) plot::$1 ← (byte[1000]) SCREEN#1 + (byte~) plot::$0
   (byte*~) plot::$2 ← (byte*~) plot::$1 + (byte) 12
@@ -1108,11 +1178,11 @@ plot: from @19
   (byte) plot::y#0 ← (byte) 16
   (byte) plot::i#0 ← (byte) 0
   to:plot::@1
-plot::@1: from @15 plot
-  (byte) plot::y#4 ← phi( @15/(byte) plot::y#1 plot/(byte) plot::y#0 )
-  (byte[256]) buffer1#8 ← phi( @15/(byte[256]) buffer1#11 plot/(byte[256]) buffer1#12 )
-  (byte) plot::i#3 ← phi( @15/(byte) plot::i#4 plot/(byte) plot::i#0 )
-  (byte*) plot::line#4 ← phi( @15/(byte*) plot::line#1 plot/(byte*) plot::line#0 )
+plot::@1: from @12 plot
+  (byte) plot::y#4 ← phi( @12/(byte) plot::y#1 plot/(byte) plot::y#0 )
+  (byte[256]) buffer1#8 ← phi( @12/(byte[256]) buffer1#12 plot/(byte[256]) buffer1#13 )
+  (byte) plot::i#3 ← phi( @12/(byte) plot::i#4 plot/(byte) plot::i#0 )
+  (byte*) plot::line#4 ← phi( @12/(byte*) plot::line#1 plot/(byte*) plot::line#0 )
   (byte) plot::x#0 ← (byte) 0
   to:plot::@2
 plot::@2: from plot::@1 plot::@2
@@ -1127,10 +1197,10 @@ plot::@2: from plot::@1 plot::@2
   (byte) plot::x#1 ← ++ (byte) plot::x#2
   (boolean~) plot::$4 ← (byte) plot::x#1 < (byte) 16
   if((boolean~) plot::$4) goto plot::@2
-  to:@15
-@15: from plot::@2
+  to:@12
+@12: from plot::@2
   (byte) plot::i#4 ← phi( plot::@2/(byte) plot::i#1 )
-  (byte[256]) buffer1#11 ← phi( plot::@2/(byte[256]) buffer1#4 )
+  (byte[256]) buffer1#12 ← phi( plot::@2/(byte[256]) buffer1#4 )
   (byte) plot::y#2 ← phi( plot::@2/(byte) plot::y#3 )
   (byte*) plot::line#3 ← phi( plot::@2/(byte*) plot::line#2 )
   (byte*~) plot::$5 ← (byte*) plot::line#3 + (byte) 40
@@ -1139,16 +1209,16 @@ plot::@2: from plot::@1 plot::@2
   (boolean~) plot::$6 ← (byte) plot::y#1 != (byte) 0
   if((boolean~) plot::$6) goto plot::@1
   to:plot::@return
-plot::@return: from @15
+plot::@return: from @12
   return 
   to:@RETURN
-@END: from @20
+@END: from @BEGIN
 
 Constant (byte[1000]) SCREEN#0 (word) 1024
 Constant (byte[256]) buffer1#0 (word) 4096
 Constant (byte[256]) buffer2#0 (word) 4352
 Constant (byte*) RASTER#0 (word) 53266
-Constant (byte) c#0 (byte) 25
+Constant (byte) main::c#0 (byte) 25
 Constant (byte) prepare::i#0 (byte) 0
 Constant (byte) flip::srcIdx#0 (byte) 0
 Constant (byte) flip::dstIdx#0 (byte) 15
@@ -1162,87 +1232,97 @@ Constant (byte) plot::x#0 (byte) 0
 Succesful SSA optimization Pass2ConstantPropagation
 CONTROL FLOW GRAPH
 @BEGIN: from
-  call prepare param-assignment
-  to:@18
-@18: from @BEGIN
-  (byte[256]) buffer2#14 ← phi( @BEGIN/(word) 4352 )
-  (byte[256]) buffer1#21 ← phi( @BEGIN/(word) 4096 )
-  (byte[1000]) SCREEN#10 ← phi( @BEGIN/(word) 1024 )
-  (byte*) RASTER#7 ← phi( @BEGIN/(word) 53266 )
-  to:@1
-@1: from @18 @20
-  (byte[256]) buffer1#20 ← phi( @18/(byte[256]) buffer1#21 @20/(byte[256]) buffer1#22 )
-  (byte[256]) buffer2#13 ← phi( @18/(byte[256]) buffer2#14 @20/(byte[256]) buffer2#15 )
-  (byte[1000]) SCREEN#9 ← phi( @18/(byte[1000]) SCREEN#10 @20/(byte[1000]) SCREEN#11 )
-  (byte*) RASTER#5 ← phi( @18/(byte*) RASTER#7 @20/(byte*) RASTER#8 )
-  to:@2
-@2: from @1 @6
-  (byte[256]) buffer2#12 ← phi( @1/(byte[256]) buffer2#13 @6/(byte[256]) buffer2#8 )
-  (byte[256]) buffer1#19 ← phi( @1/(byte[256]) buffer1#20 @6/(byte[256]) buffer1#15 )
-  (byte[1000]) SCREEN#8 ← phi( @1/(byte[1000]) SCREEN#9 @6/(byte[1000]) SCREEN#4 )
-  (byte) c#6 ← phi( @1/(byte) 25 @6/(byte) c#1 )
-  (byte*) RASTER#3 ← phi( @1/(byte*) RASTER#5 @6/(byte*) RASTER#6 )
-  to:@3
-@3: from @2 @3
-  (byte[256]) buffer1#18 ← phi( @2/(byte[256]) buffer1#19 @3/(byte[256]) buffer1#18 )
-  (byte[256]) buffer2#11 ← phi( @2/(byte[256]) buffer2#12 @3/(byte[256]) buffer2#11 )
-  (byte[1000]) SCREEN#7 ← phi( @2/(byte[1000]) SCREEN#8 @3/(byte[1000]) SCREEN#7 )
-  (byte) c#5 ← phi( @2/(byte) c#6 @3/(byte) c#5 )
-  (byte*) RASTER#1 ← phi( @2/(byte*) RASTER#3 @3/(byte*) RASTER#1 )
-  (byte~) $1 ← * (byte*) RASTER#1
-  (boolean~) $2 ← (byte~) $1 != (byte) 254
-  if((boolean~) $2) goto @3
-  to:@5
-@5: from @3
-  (byte[256]) buffer2#10 ← phi( @3/(byte[256]) buffer2#11 )
-  (byte[256]) buffer1#17 ← phi( @3/(byte[256]) buffer1#18 )
-  (byte[1000]) SCREEN#6 ← phi( @3/(byte[1000]) SCREEN#7 )
-  (byte) c#4 ← phi( @3/(byte) c#5 )
-  (byte*) RASTER#4 ← phi( @3/(byte*) RASTER#1 )
-  to:@4
-@4: from @4 @5
-  (byte[256]) buffer1#16 ← phi( @4/(byte[256]) buffer1#16 @5/(byte[256]) buffer1#17 )
-  (byte[256]) buffer2#9 ← phi( @4/(byte[256]) buffer2#9 @5/(byte[256]) buffer2#10 )
-  (byte[1000]) SCREEN#5 ← phi( @4/(byte[1000]) SCREEN#5 @5/(byte[1000]) SCREEN#6 )
-  (byte) c#3 ← phi( @4/(byte) c#3 @5/(byte) c#4 )
-  (byte*) RASTER#2 ← phi( @4/(byte*) RASTER#2 @5/(byte*) RASTER#4 )
-  (byte~) $3 ← * (byte*) RASTER#2
-  (boolean~) $4 ← (byte~) $3 != (byte) 255
-  if((boolean~) $4) goto @4
-  to:@6
-@6: from @4
-  (byte[256]) buffer2#8 ← phi( @4/(byte[256]) buffer2#9 )
-  (byte[256]) buffer1#15 ← phi( @4/(byte[256]) buffer1#16 )
-  (byte[1000]) SCREEN#4 ← phi( @4/(byte[1000]) SCREEN#5 )
-  (byte*) RASTER#6 ← phi( @4/(byte*) RASTER#2 )
-  (byte) c#2 ← phi( @4/(byte) c#3 )
-  (byte) c#1 ← -- (byte) c#2
-  (boolean~) $5 ← (byte) c#1 != (byte) 0
-  if((boolean~) $5) goto @2
-  to:@7
-@7: from @6
-  (byte*) RASTER#10 ← phi( @6/(byte*) RASTER#6 )
-  (byte[256]) buffer1#13 ← phi( @6/(byte[256]) buffer1#15 )
-  (byte[256]) buffer2#7 ← phi( @6/(byte[256]) buffer2#8 )
-  (byte[1000]) SCREEN#3 ← phi( @6/(byte[1000]) SCREEN#4 )
-  call flip param-assignment
-  to:@19
-@19: from @7
-  (byte[256]) buffer2#16 ← phi( @7/(byte[256]) buffer2#7 )
-  (byte*) RASTER#9 ← phi( @7/(byte*) RASTER#10 )
-  (byte[256]) buffer1#14 ← phi( @7/(byte[256]) buffer1#13 )
-  (byte[1000]) SCREEN#2 ← phi( @7/(byte[1000]) SCREEN#3 )
-  call plot param-assignment
-  to:@20
-@20: from @19
-  (byte[256]) buffer2#15 ← phi( @19/(byte[256]) buffer2#16 )
-  (byte[256]) buffer1#22 ← phi( @19/(byte[256]) buffer1#14 )
-  (byte[1000]) SCREEN#11 ← phi( @19/(byte[1000]) SCREEN#2 )
-  (byte*) RASTER#8 ← phi( @19/(byte*) RASTER#9 )
-  if(true) goto @1
+  call main param-assignment
   to:@END
-prepare: from @BEGIN
-  (byte[256]) buffer1#5 ← phi( @BEGIN/(word) 4096 )
+main: from @BEGIN
+  (byte[256]) buffer2#16 ← phi( @BEGIN/(word) 4352 )
+  (byte[1000]) SCREEN#12 ← phi( @BEGIN/(word) 1024 )
+  (byte*) RASTER#9 ← phi( @BEGIN/(word) 53266 )
+  (byte[256]) buffer1#9 ← phi( @BEGIN/(word) 4096 )
+  call prepare param-assignment
+  to:@16
+@16: from main
+  (byte[256]) buffer2#14 ← phi( main/(byte[256]) buffer2#16 )
+  (byte[256]) buffer1#22 ← phi( main/(byte[256]) buffer1#9 )
+  (byte[1000]) SCREEN#10 ← phi( main/(byte[1000]) SCREEN#12 )
+  (byte*) RASTER#7 ← phi( main/(byte*) RASTER#9 )
+  to:main::@1
+main::@1: from @16 @18
+  (byte[256]) buffer1#21 ← phi( @16/(byte[256]) buffer1#22 @18/(byte[256]) buffer1#23 )
+  (byte[256]) buffer2#13 ← phi( @16/(byte[256]) buffer2#14 @18/(byte[256]) buffer2#15 )
+  (byte[1000]) SCREEN#9 ← phi( @16/(byte[1000]) SCREEN#10 @18/(byte[1000]) SCREEN#11 )
+  (byte*) RASTER#6 ← phi( @16/(byte*) RASTER#7 @18/(byte*) RASTER#8 )
+  to:main::@2
+main::@2: from @2 main::@1
+  (byte[256]) buffer2#12 ← phi( @2/(byte[256]) buffer2#8 main::@1/(byte[256]) buffer2#13 )
+  (byte[256]) buffer1#20 ← phi( @2/(byte[256]) buffer1#16 main::@1/(byte[256]) buffer1#21 )
+  (byte[1000]) SCREEN#8 ← phi( @2/(byte[1000]) SCREEN#4 main::@1/(byte[1000]) SCREEN#9 )
+  (byte) main::c#6 ← phi( @2/(byte) main::c#1 main::@1/(byte) 25 )
+  (byte*) RASTER#3 ← phi( @2/(byte*) RASTER#5 main::@1/(byte*) RASTER#6 )
+  to:main::@3
+main::@3: from main::@2 main::@3
+  (byte[256]) buffer1#19 ← phi( main::@2/(byte[256]) buffer1#20 main::@3/(byte[256]) buffer1#19 )
+  (byte[256]) buffer2#11 ← phi( main::@2/(byte[256]) buffer2#12 main::@3/(byte[256]) buffer2#11 )
+  (byte[1000]) SCREEN#7 ← phi( main::@2/(byte[1000]) SCREEN#8 main::@3/(byte[1000]) SCREEN#7 )
+  (byte) main::c#5 ← phi( main::@2/(byte) main::c#6 main::@3/(byte) main::c#5 )
+  (byte*) RASTER#1 ← phi( main::@2/(byte*) RASTER#3 main::@3/(byte*) RASTER#1 )
+  (byte~) main::$1 ← * (byte*) RASTER#1
+  (boolean~) main::$2 ← (byte~) main::$1 != (byte) 254
+  if((boolean~) main::$2) goto main::@3
+  to:@1
+@1: from main::@3
+  (byte[256]) buffer2#10 ← phi( main::@3/(byte[256]) buffer2#11 )
+  (byte[256]) buffer1#18 ← phi( main::@3/(byte[256]) buffer1#19 )
+  (byte[1000]) SCREEN#6 ← phi( main::@3/(byte[1000]) SCREEN#7 )
+  (byte) main::c#4 ← phi( main::@3/(byte) main::c#5 )
+  (byte*) RASTER#4 ← phi( main::@3/(byte*) RASTER#1 )
+  to:main::@4
+main::@4: from @1 main::@4
+  (byte[256]) buffer1#17 ← phi( @1/(byte[256]) buffer1#18 main::@4/(byte[256]) buffer1#17 )
+  (byte[256]) buffer2#9 ← phi( @1/(byte[256]) buffer2#10 main::@4/(byte[256]) buffer2#9 )
+  (byte[1000]) SCREEN#5 ← phi( @1/(byte[1000]) SCREEN#6 main::@4/(byte[1000]) SCREEN#5 )
+  (byte) main::c#3 ← phi( @1/(byte) main::c#4 main::@4/(byte) main::c#3 )
+  (byte*) RASTER#2 ← phi( @1/(byte*) RASTER#4 main::@4/(byte*) RASTER#2 )
+  (byte~) main::$3 ← * (byte*) RASTER#2
+  (boolean~) main::$4 ← (byte~) main::$3 != (byte) 255
+  if((boolean~) main::$4) goto main::@4
+  to:@2
+@2: from main::@4
+  (byte[256]) buffer2#8 ← phi( main::@4/(byte[256]) buffer2#9 )
+  (byte[256]) buffer1#16 ← phi( main::@4/(byte[256]) buffer1#17 )
+  (byte[1000]) SCREEN#4 ← phi( main::@4/(byte[1000]) SCREEN#5 )
+  (byte*) RASTER#5 ← phi( main::@4/(byte*) RASTER#2 )
+  (byte) main::c#2 ← phi( main::@4/(byte) main::c#3 )
+  (byte) main::c#1 ← -- (byte) main::c#2
+  (boolean~) main::$5 ← (byte) main::c#1 != (byte) 0
+  if((boolean~) main::$5) goto main::@2
+  to:@3
+@3: from @2
+  (byte*) RASTER#11 ← phi( @2/(byte*) RASTER#5 )
+  (byte[256]) buffer1#14 ← phi( @2/(byte[256]) buffer1#16 )
+  (byte[256]) buffer2#7 ← phi( @2/(byte[256]) buffer2#8 )
+  (byte[1000]) SCREEN#3 ← phi( @2/(byte[1000]) SCREEN#4 )
+  call flip param-assignment
+  to:@17
+@17: from @3
+  (byte[256]) buffer2#17 ← phi( @3/(byte[256]) buffer2#7 )
+  (byte*) RASTER#10 ← phi( @3/(byte*) RASTER#11 )
+  (byte[256]) buffer1#15 ← phi( @3/(byte[256]) buffer1#14 )
+  (byte[1000]) SCREEN#2 ← phi( @3/(byte[1000]) SCREEN#3 )
+  call plot param-assignment
+  to:@18
+@18: from @17
+  (byte[256]) buffer2#15 ← phi( @17/(byte[256]) buffer2#17 )
+  (byte[256]) buffer1#23 ← phi( @17/(byte[256]) buffer1#15 )
+  (byte[1000]) SCREEN#11 ← phi( @17/(byte[1000]) SCREEN#2 )
+  (byte*) RASTER#8 ← phi( @17/(byte*) RASTER#10 )
+  if(true) goto main::@1
+  to:main::@return
+main::@return: from @18
+  return 
+  to:@RETURN
+prepare: from main
+  (byte[256]) buffer1#5 ← phi( main/(byte[256]) buffer1#9 )
   to:prepare::@1
 prepare::@1: from prepare prepare::@1
   (byte[256]) buffer1#1 ← phi( prepare/(byte[256]) buffer1#5 prepare::@1/(byte[256]) buffer1#1 )
@@ -1255,16 +1335,16 @@ prepare::@1: from prepare prepare::@1
 prepare::@return: from prepare::@1
   return 
   to:@RETURN
-flip: from @7
-  (byte[256]) buffer2#6 ← phi( @7/(byte[256]) buffer2#7 )
-  (byte[256]) buffer1#10 ← phi( @7/(byte[256]) buffer1#13 )
+flip: from @3
+  (byte[256]) buffer2#6 ← phi( @3/(byte[256]) buffer2#7 )
+  (byte[256]) buffer1#11 ← phi( @3/(byte[256]) buffer1#14 )
   to:flip::@1
-flip::@1: from @11 flip
-  (byte) flip::r#4 ← phi( @11/(byte) flip::r#1 flip/(byte) 16 )
-  (byte[256]) buffer1#6 ← phi( @11/(byte[256]) buffer1#9 flip/(byte[256]) buffer1#10 )
-  (byte) flip::srcIdx#3 ← phi( @11/(byte) flip::srcIdx#4 flip/(byte) 0 )
-  (byte[256]) buffer2#3 ← phi( @11/(byte[256]) buffer2#5 flip/(byte[256]) buffer2#6 )
-  (byte) flip::dstIdx#5 ← phi( @11/(byte) flip::dstIdx#2 flip/(byte) 15 )
+flip::@1: from @8 flip
+  (byte) flip::r#4 ← phi( @8/(byte) flip::r#1 flip/(byte) 16 )
+  (byte[256]) buffer1#6 ← phi( @8/(byte[256]) buffer1#10 flip/(byte[256]) buffer1#11 )
+  (byte) flip::srcIdx#3 ← phi( @8/(byte) flip::srcIdx#4 flip/(byte) 0 )
+  (byte[256]) buffer2#3 ← phi( @8/(byte[256]) buffer2#5 flip/(byte[256]) buffer2#6 )
+  (byte) flip::dstIdx#5 ← phi( @8/(byte) flip::dstIdx#2 flip/(byte) 15 )
   to:flip::@2
 flip::@2: from flip::@1 flip::@2
   (byte) flip::r#3 ← phi( flip::@1/(byte) flip::r#4 flip::@2/(byte) flip::r#3 )
@@ -1281,26 +1361,26 @@ flip::@2: from flip::@1 flip::@2
   (byte) flip::c#1 ← -- (byte) flip::c#2
   (boolean~) flip::$2 ← (byte) flip::c#1 != (byte) 0
   if((boolean~) flip::$2) goto flip::@2
-  to:@11
-@11: from flip::@2
+  to:@8
+@8: from flip::@2
   (byte[256]) buffer2#5 ← phi( flip::@2/(byte[256]) buffer2#1 )
   (byte) flip::srcIdx#4 ← phi( flip::@2/(byte) flip::srcIdx#1 )
-  (byte[256]) buffer1#9 ← phi( flip::@2/(byte[256]) buffer1#2 )
+  (byte[256]) buffer1#10 ← phi( flip::@2/(byte[256]) buffer1#2 )
   (byte) flip::r#2 ← phi( flip::@2/(byte) flip::r#3 )
   (byte) flip::dstIdx#4 ← phi( flip::@2/(byte) flip::dstIdx#1 )
   (byte) flip::dstIdx#2 ← -- (byte) flip::dstIdx#4
   (byte) flip::r#1 ← -- (byte) flip::r#2
   (boolean~) flip::$3 ← (byte) flip::r#1 != (byte) 0
   if((boolean~) flip::$3) goto flip::@1
-  to:@12
-@12: from @11
-  (byte[256]) buffer2#4 ← phi( @11/(byte[256]) buffer2#5 )
-  (byte[256]) buffer1#7 ← phi( @11/(byte[256]) buffer1#9 )
+  to:@9
+@9: from @8
+  (byte[256]) buffer2#4 ← phi( @8/(byte[256]) buffer2#5 )
+  (byte[256]) buffer1#7 ← phi( @8/(byte[256]) buffer1#10 )
   to:flip::@3
-flip::@3: from @12 flip::@3
-  (byte[256]) buffer1#3 ← phi( @12/(byte[256]) buffer1#7 flip::@3/(byte[256]) buffer1#3 )
-  (byte) flip::i#2 ← phi( @12/(byte) 0 flip::@3/(byte) flip::i#1 )
-  (byte[256]) buffer2#2 ← phi( @12/(byte[256]) buffer2#4 flip::@3/(byte[256]) buffer2#2 )
+flip::@3: from @9 flip::@3
+  (byte[256]) buffer1#3 ← phi( @9/(byte[256]) buffer1#7 flip::@3/(byte[256]) buffer1#3 )
+  (byte) flip::i#2 ← phi( @9/(byte) 0 flip::@3/(byte) flip::i#1 )
+  (byte[256]) buffer2#2 ← phi( @9/(byte[256]) buffer2#4 flip::@3/(byte[256]) buffer2#2 )
   (byte~) flip::$4 ← (byte[256]) buffer2#2 *idx (byte) flip::i#2
   *((byte[256]) buffer1#3 + (byte) flip::i#2) ← (byte~) flip::$4
   (byte) flip::i#1 ← ++ (byte) flip::i#2
@@ -1310,18 +1390,18 @@ flip::@3: from @12 flip::@3
 flip::@return: from flip::@3
   return 
   to:@RETURN
-plot: from @19
-  (byte[256]) buffer1#12 ← phi( @19/(byte[256]) buffer1#14 )
-  (byte[1000]) SCREEN#1 ← phi( @19/(byte[1000]) SCREEN#2 )
+plot: from @17
+  (byte[256]) buffer1#13 ← phi( @17/(byte[256]) buffer1#15 )
+  (byte[1000]) SCREEN#1 ← phi( @17/(byte[1000]) SCREEN#2 )
   (byte*~) plot::$1 ← (byte[1000]) SCREEN#1 + (byte) 200
   (byte*~) plot::$2 ← (byte*~) plot::$1 + (byte) 12
   (byte*) plot::line#0 ← (byte*~) plot::$2
   to:plot::@1
-plot::@1: from @15 plot
-  (byte) plot::y#4 ← phi( @15/(byte) plot::y#1 plot/(byte) 16 )
-  (byte[256]) buffer1#8 ← phi( @15/(byte[256]) buffer1#11 plot/(byte[256]) buffer1#12 )
-  (byte) plot::i#3 ← phi( @15/(byte) plot::i#4 plot/(byte) 0 )
-  (byte*) plot::line#4 ← phi( @15/(byte*) plot::line#1 plot/(byte*) plot::line#0 )
+plot::@1: from @12 plot
+  (byte) plot::y#4 ← phi( @12/(byte) plot::y#1 plot/(byte) 16 )
+  (byte[256]) buffer1#8 ← phi( @12/(byte[256]) buffer1#12 plot/(byte[256]) buffer1#13 )
+  (byte) plot::i#3 ← phi( @12/(byte) plot::i#4 plot/(byte) 0 )
+  (byte*) plot::line#4 ← phi( @12/(byte*) plot::line#1 plot/(byte*) plot::line#0 )
   to:plot::@2
 plot::@2: from plot::@1 plot::@2
   (byte) plot::y#3 ← phi( plot::@1/(byte) plot::y#4 plot::@2/(byte) plot::y#3 )
@@ -1335,10 +1415,10 @@ plot::@2: from plot::@1 plot::@2
   (byte) plot::x#1 ← ++ (byte) plot::x#2
   (boolean~) plot::$4 ← (byte) plot::x#1 < (byte) 16
   if((boolean~) plot::$4) goto plot::@2
-  to:@15
-@15: from plot::@2
+  to:@12
+@12: from plot::@2
   (byte) plot::i#4 ← phi( plot::@2/(byte) plot::i#1 )
-  (byte[256]) buffer1#11 ← phi( plot::@2/(byte[256]) buffer1#4 )
+  (byte[256]) buffer1#12 ← phi( plot::@2/(byte[256]) buffer1#4 )
   (byte) plot::y#2 ← phi( plot::@2/(byte) plot::y#3 )
   (byte*) plot::line#3 ← phi( plot::@2/(byte*) plot::line#2 )
   (byte*~) plot::$5 ← (byte*) plot::line#3 + (byte) 40
@@ -1347,96 +1427,106 @@ plot::@2: from plot::@1 plot::@2
   (boolean~) plot::$6 ← (byte) plot::y#1 != (byte) 0
   if((boolean~) plot::$6) goto plot::@1
   to:plot::@return
-plot::@return: from @15
+plot::@return: from @12
   return 
   to:@RETURN
-@END: from @20
+@END: from @BEGIN
 
 Consolidated constant in assignment (byte*~) plot::$2
 Succesful SSA optimization Pass2ConstantAdditionElimination
 CONTROL FLOW GRAPH
 @BEGIN: from
-  call prepare param-assignment
-  to:@18
-@18: from @BEGIN
-  (byte[256]) buffer2#14 ← phi( @BEGIN/(word) 4352 )
-  (byte[256]) buffer1#21 ← phi( @BEGIN/(word) 4096 )
-  (byte[1000]) SCREEN#10 ← phi( @BEGIN/(word) 1024 )
-  (byte*) RASTER#7 ← phi( @BEGIN/(word) 53266 )
-  to:@1
-@1: from @18 @20
-  (byte[256]) buffer1#20 ← phi( @18/(byte[256]) buffer1#21 @20/(byte[256]) buffer1#22 )
-  (byte[256]) buffer2#13 ← phi( @18/(byte[256]) buffer2#14 @20/(byte[256]) buffer2#15 )
-  (byte[1000]) SCREEN#9 ← phi( @18/(byte[1000]) SCREEN#10 @20/(byte[1000]) SCREEN#11 )
-  (byte*) RASTER#5 ← phi( @18/(byte*) RASTER#7 @20/(byte*) RASTER#8 )
-  to:@2
-@2: from @1 @6
-  (byte[256]) buffer2#12 ← phi( @1/(byte[256]) buffer2#13 @6/(byte[256]) buffer2#8 )
-  (byte[256]) buffer1#19 ← phi( @1/(byte[256]) buffer1#20 @6/(byte[256]) buffer1#15 )
-  (byte[1000]) SCREEN#8 ← phi( @1/(byte[1000]) SCREEN#9 @6/(byte[1000]) SCREEN#4 )
-  (byte) c#6 ← phi( @1/(byte) 25 @6/(byte) c#1 )
-  (byte*) RASTER#3 ← phi( @1/(byte*) RASTER#5 @6/(byte*) RASTER#6 )
-  to:@3
-@3: from @2 @3
-  (byte[256]) buffer1#18 ← phi( @2/(byte[256]) buffer1#19 @3/(byte[256]) buffer1#18 )
-  (byte[256]) buffer2#11 ← phi( @2/(byte[256]) buffer2#12 @3/(byte[256]) buffer2#11 )
-  (byte[1000]) SCREEN#7 ← phi( @2/(byte[1000]) SCREEN#8 @3/(byte[1000]) SCREEN#7 )
-  (byte) c#5 ← phi( @2/(byte) c#6 @3/(byte) c#5 )
-  (byte*) RASTER#1 ← phi( @2/(byte*) RASTER#3 @3/(byte*) RASTER#1 )
-  (byte~) $1 ← * (byte*) RASTER#1
-  (boolean~) $2 ← (byte~) $1 != (byte) 254
-  if((boolean~) $2) goto @3
-  to:@5
-@5: from @3
-  (byte[256]) buffer2#10 ← phi( @3/(byte[256]) buffer2#11 )
-  (byte[256]) buffer1#17 ← phi( @3/(byte[256]) buffer1#18 )
-  (byte[1000]) SCREEN#6 ← phi( @3/(byte[1000]) SCREEN#7 )
-  (byte) c#4 ← phi( @3/(byte) c#5 )
-  (byte*) RASTER#4 ← phi( @3/(byte*) RASTER#1 )
-  to:@4
-@4: from @4 @5
-  (byte[256]) buffer1#16 ← phi( @4/(byte[256]) buffer1#16 @5/(byte[256]) buffer1#17 )
-  (byte[256]) buffer2#9 ← phi( @4/(byte[256]) buffer2#9 @5/(byte[256]) buffer2#10 )
-  (byte[1000]) SCREEN#5 ← phi( @4/(byte[1000]) SCREEN#5 @5/(byte[1000]) SCREEN#6 )
-  (byte) c#3 ← phi( @4/(byte) c#3 @5/(byte) c#4 )
-  (byte*) RASTER#2 ← phi( @4/(byte*) RASTER#2 @5/(byte*) RASTER#4 )
-  (byte~) $3 ← * (byte*) RASTER#2
-  (boolean~) $4 ← (byte~) $3 != (byte) 255
-  if((boolean~) $4) goto @4
-  to:@6
-@6: from @4
-  (byte[256]) buffer2#8 ← phi( @4/(byte[256]) buffer2#9 )
-  (byte[256]) buffer1#15 ← phi( @4/(byte[256]) buffer1#16 )
-  (byte[1000]) SCREEN#4 ← phi( @4/(byte[1000]) SCREEN#5 )
-  (byte*) RASTER#6 ← phi( @4/(byte*) RASTER#2 )
-  (byte) c#2 ← phi( @4/(byte) c#3 )
-  (byte) c#1 ← -- (byte) c#2
-  (boolean~) $5 ← (byte) c#1 != (byte) 0
-  if((boolean~) $5) goto @2
-  to:@7
-@7: from @6
-  (byte*) RASTER#10 ← phi( @6/(byte*) RASTER#6 )
-  (byte[256]) buffer1#13 ← phi( @6/(byte[256]) buffer1#15 )
-  (byte[256]) buffer2#7 ← phi( @6/(byte[256]) buffer2#8 )
-  (byte[1000]) SCREEN#3 ← phi( @6/(byte[1000]) SCREEN#4 )
-  call flip param-assignment
-  to:@19
-@19: from @7
-  (byte[256]) buffer2#16 ← phi( @7/(byte[256]) buffer2#7 )
-  (byte*) RASTER#9 ← phi( @7/(byte*) RASTER#10 )
-  (byte[256]) buffer1#14 ← phi( @7/(byte[256]) buffer1#13 )
-  (byte[1000]) SCREEN#2 ← phi( @7/(byte[1000]) SCREEN#3 )
-  call plot param-assignment
-  to:@20
-@20: from @19
-  (byte[256]) buffer2#15 ← phi( @19/(byte[256]) buffer2#16 )
-  (byte[256]) buffer1#22 ← phi( @19/(byte[256]) buffer1#14 )
-  (byte[1000]) SCREEN#11 ← phi( @19/(byte[1000]) SCREEN#2 )
-  (byte*) RASTER#8 ← phi( @19/(byte*) RASTER#9 )
-  if(true) goto @1
+  call main param-assignment
   to:@END
-prepare: from @BEGIN
-  (byte[256]) buffer1#5 ← phi( @BEGIN/(word) 4096 )
+main: from @BEGIN
+  (byte[256]) buffer2#16 ← phi( @BEGIN/(word) 4352 )
+  (byte[1000]) SCREEN#12 ← phi( @BEGIN/(word) 1024 )
+  (byte*) RASTER#9 ← phi( @BEGIN/(word) 53266 )
+  (byte[256]) buffer1#9 ← phi( @BEGIN/(word) 4096 )
+  call prepare param-assignment
+  to:@16
+@16: from main
+  (byte[256]) buffer2#14 ← phi( main/(byte[256]) buffer2#16 )
+  (byte[256]) buffer1#22 ← phi( main/(byte[256]) buffer1#9 )
+  (byte[1000]) SCREEN#10 ← phi( main/(byte[1000]) SCREEN#12 )
+  (byte*) RASTER#7 ← phi( main/(byte*) RASTER#9 )
+  to:main::@1
+main::@1: from @16 @18
+  (byte[256]) buffer1#21 ← phi( @16/(byte[256]) buffer1#22 @18/(byte[256]) buffer1#23 )
+  (byte[256]) buffer2#13 ← phi( @16/(byte[256]) buffer2#14 @18/(byte[256]) buffer2#15 )
+  (byte[1000]) SCREEN#9 ← phi( @16/(byte[1000]) SCREEN#10 @18/(byte[1000]) SCREEN#11 )
+  (byte*) RASTER#6 ← phi( @16/(byte*) RASTER#7 @18/(byte*) RASTER#8 )
+  to:main::@2
+main::@2: from @2 main::@1
+  (byte[256]) buffer2#12 ← phi( @2/(byte[256]) buffer2#8 main::@1/(byte[256]) buffer2#13 )
+  (byte[256]) buffer1#20 ← phi( @2/(byte[256]) buffer1#16 main::@1/(byte[256]) buffer1#21 )
+  (byte[1000]) SCREEN#8 ← phi( @2/(byte[1000]) SCREEN#4 main::@1/(byte[1000]) SCREEN#9 )
+  (byte) main::c#6 ← phi( @2/(byte) main::c#1 main::@1/(byte) 25 )
+  (byte*) RASTER#3 ← phi( @2/(byte*) RASTER#5 main::@1/(byte*) RASTER#6 )
+  to:main::@3
+main::@3: from main::@2 main::@3
+  (byte[256]) buffer1#19 ← phi( main::@2/(byte[256]) buffer1#20 main::@3/(byte[256]) buffer1#19 )
+  (byte[256]) buffer2#11 ← phi( main::@2/(byte[256]) buffer2#12 main::@3/(byte[256]) buffer2#11 )
+  (byte[1000]) SCREEN#7 ← phi( main::@2/(byte[1000]) SCREEN#8 main::@3/(byte[1000]) SCREEN#7 )
+  (byte) main::c#5 ← phi( main::@2/(byte) main::c#6 main::@3/(byte) main::c#5 )
+  (byte*) RASTER#1 ← phi( main::@2/(byte*) RASTER#3 main::@3/(byte*) RASTER#1 )
+  (byte~) main::$1 ← * (byte*) RASTER#1
+  (boolean~) main::$2 ← (byte~) main::$1 != (byte) 254
+  if((boolean~) main::$2) goto main::@3
+  to:@1
+@1: from main::@3
+  (byte[256]) buffer2#10 ← phi( main::@3/(byte[256]) buffer2#11 )
+  (byte[256]) buffer1#18 ← phi( main::@3/(byte[256]) buffer1#19 )
+  (byte[1000]) SCREEN#6 ← phi( main::@3/(byte[1000]) SCREEN#7 )
+  (byte) main::c#4 ← phi( main::@3/(byte) main::c#5 )
+  (byte*) RASTER#4 ← phi( main::@3/(byte*) RASTER#1 )
+  to:main::@4
+main::@4: from @1 main::@4
+  (byte[256]) buffer1#17 ← phi( @1/(byte[256]) buffer1#18 main::@4/(byte[256]) buffer1#17 )
+  (byte[256]) buffer2#9 ← phi( @1/(byte[256]) buffer2#10 main::@4/(byte[256]) buffer2#9 )
+  (byte[1000]) SCREEN#5 ← phi( @1/(byte[1000]) SCREEN#6 main::@4/(byte[1000]) SCREEN#5 )
+  (byte) main::c#3 ← phi( @1/(byte) main::c#4 main::@4/(byte) main::c#3 )
+  (byte*) RASTER#2 ← phi( @1/(byte*) RASTER#4 main::@4/(byte*) RASTER#2 )
+  (byte~) main::$3 ← * (byte*) RASTER#2
+  (boolean~) main::$4 ← (byte~) main::$3 != (byte) 255
+  if((boolean~) main::$4) goto main::@4
+  to:@2
+@2: from main::@4
+  (byte[256]) buffer2#8 ← phi( main::@4/(byte[256]) buffer2#9 )
+  (byte[256]) buffer1#16 ← phi( main::@4/(byte[256]) buffer1#17 )
+  (byte[1000]) SCREEN#4 ← phi( main::@4/(byte[1000]) SCREEN#5 )
+  (byte*) RASTER#5 ← phi( main::@4/(byte*) RASTER#2 )
+  (byte) main::c#2 ← phi( main::@4/(byte) main::c#3 )
+  (byte) main::c#1 ← -- (byte) main::c#2
+  (boolean~) main::$5 ← (byte) main::c#1 != (byte) 0
+  if((boolean~) main::$5) goto main::@2
+  to:@3
+@3: from @2
+  (byte*) RASTER#11 ← phi( @2/(byte*) RASTER#5 )
+  (byte[256]) buffer1#14 ← phi( @2/(byte[256]) buffer1#16 )
+  (byte[256]) buffer2#7 ← phi( @2/(byte[256]) buffer2#8 )
+  (byte[1000]) SCREEN#3 ← phi( @2/(byte[1000]) SCREEN#4 )
+  call flip param-assignment
+  to:@17
+@17: from @3
+  (byte[256]) buffer2#17 ← phi( @3/(byte[256]) buffer2#7 )
+  (byte*) RASTER#10 ← phi( @3/(byte*) RASTER#11 )
+  (byte[256]) buffer1#15 ← phi( @3/(byte[256]) buffer1#14 )
+  (byte[1000]) SCREEN#2 ← phi( @3/(byte[1000]) SCREEN#3 )
+  call plot param-assignment
+  to:@18
+@18: from @17
+  (byte[256]) buffer2#15 ← phi( @17/(byte[256]) buffer2#17 )
+  (byte[256]) buffer1#23 ← phi( @17/(byte[256]) buffer1#15 )
+  (byte[1000]) SCREEN#11 ← phi( @17/(byte[1000]) SCREEN#2 )
+  (byte*) RASTER#8 ← phi( @17/(byte*) RASTER#10 )
+  if(true) goto main::@1
+  to:main::@return
+main::@return: from @18
+  return 
+  to:@RETURN
+prepare: from main
+  (byte[256]) buffer1#5 ← phi( main/(byte[256]) buffer1#9 )
   to:prepare::@1
 prepare::@1: from prepare prepare::@1
   (byte[256]) buffer1#1 ← phi( prepare/(byte[256]) buffer1#5 prepare::@1/(byte[256]) buffer1#1 )
@@ -1449,16 +1539,16 @@ prepare::@1: from prepare prepare::@1
 prepare::@return: from prepare::@1
   return 
   to:@RETURN
-flip: from @7
-  (byte[256]) buffer2#6 ← phi( @7/(byte[256]) buffer2#7 )
-  (byte[256]) buffer1#10 ← phi( @7/(byte[256]) buffer1#13 )
+flip: from @3
+  (byte[256]) buffer2#6 ← phi( @3/(byte[256]) buffer2#7 )
+  (byte[256]) buffer1#11 ← phi( @3/(byte[256]) buffer1#14 )
   to:flip::@1
-flip::@1: from @11 flip
-  (byte) flip::r#4 ← phi( @11/(byte) flip::r#1 flip/(byte) 16 )
-  (byte[256]) buffer1#6 ← phi( @11/(byte[256]) buffer1#9 flip/(byte[256]) buffer1#10 )
-  (byte) flip::srcIdx#3 ← phi( @11/(byte) flip::srcIdx#4 flip/(byte) 0 )
-  (byte[256]) buffer2#3 ← phi( @11/(byte[256]) buffer2#5 flip/(byte[256]) buffer2#6 )
-  (byte) flip::dstIdx#5 ← phi( @11/(byte) flip::dstIdx#2 flip/(byte) 15 )
+flip::@1: from @8 flip
+  (byte) flip::r#4 ← phi( @8/(byte) flip::r#1 flip/(byte) 16 )
+  (byte[256]) buffer1#6 ← phi( @8/(byte[256]) buffer1#10 flip/(byte[256]) buffer1#11 )
+  (byte) flip::srcIdx#3 ← phi( @8/(byte) flip::srcIdx#4 flip/(byte) 0 )
+  (byte[256]) buffer2#3 ← phi( @8/(byte[256]) buffer2#5 flip/(byte[256]) buffer2#6 )
+  (byte) flip::dstIdx#5 ← phi( @8/(byte) flip::dstIdx#2 flip/(byte) 15 )
   to:flip::@2
 flip::@2: from flip::@1 flip::@2
   (byte) flip::r#3 ← phi( flip::@1/(byte) flip::r#4 flip::@2/(byte) flip::r#3 )
@@ -1475,26 +1565,26 @@ flip::@2: from flip::@1 flip::@2
   (byte) flip::c#1 ← -- (byte) flip::c#2
   (boolean~) flip::$2 ← (byte) flip::c#1 != (byte) 0
   if((boolean~) flip::$2) goto flip::@2
-  to:@11
-@11: from flip::@2
+  to:@8
+@8: from flip::@2
   (byte[256]) buffer2#5 ← phi( flip::@2/(byte[256]) buffer2#1 )
   (byte) flip::srcIdx#4 ← phi( flip::@2/(byte) flip::srcIdx#1 )
-  (byte[256]) buffer1#9 ← phi( flip::@2/(byte[256]) buffer1#2 )
+  (byte[256]) buffer1#10 ← phi( flip::@2/(byte[256]) buffer1#2 )
   (byte) flip::r#2 ← phi( flip::@2/(byte) flip::r#3 )
   (byte) flip::dstIdx#4 ← phi( flip::@2/(byte) flip::dstIdx#1 )
   (byte) flip::dstIdx#2 ← -- (byte) flip::dstIdx#4
   (byte) flip::r#1 ← -- (byte) flip::r#2
   (boolean~) flip::$3 ← (byte) flip::r#1 != (byte) 0
   if((boolean~) flip::$3) goto flip::@1
-  to:@12
-@12: from @11
-  (byte[256]) buffer2#4 ← phi( @11/(byte[256]) buffer2#5 )
-  (byte[256]) buffer1#7 ← phi( @11/(byte[256]) buffer1#9 )
+  to:@9
+@9: from @8
+  (byte[256]) buffer2#4 ← phi( @8/(byte[256]) buffer2#5 )
+  (byte[256]) buffer1#7 ← phi( @8/(byte[256]) buffer1#10 )
   to:flip::@3
-flip::@3: from @12 flip::@3
-  (byte[256]) buffer1#3 ← phi( @12/(byte[256]) buffer1#7 flip::@3/(byte[256]) buffer1#3 )
-  (byte) flip::i#2 ← phi( @12/(byte) 0 flip::@3/(byte) flip::i#1 )
-  (byte[256]) buffer2#2 ← phi( @12/(byte[256]) buffer2#4 flip::@3/(byte[256]) buffer2#2 )
+flip::@3: from @9 flip::@3
+  (byte[256]) buffer1#3 ← phi( @9/(byte[256]) buffer1#7 flip::@3/(byte[256]) buffer1#3 )
+  (byte) flip::i#2 ← phi( @9/(byte) 0 flip::@3/(byte) flip::i#1 )
+  (byte[256]) buffer2#2 ← phi( @9/(byte[256]) buffer2#4 flip::@3/(byte[256]) buffer2#2 )
   (byte~) flip::$4 ← (byte[256]) buffer2#2 *idx (byte) flip::i#2
   *((byte[256]) buffer1#3 + (byte) flip::i#2) ← (byte~) flip::$4
   (byte) flip::i#1 ← ++ (byte) flip::i#2
@@ -1504,18 +1594,18 @@ flip::@3: from @12 flip::@3
 flip::@return: from flip::@3
   return 
   to:@RETURN
-plot: from @19
-  (byte[256]) buffer1#12 ← phi( @19/(byte[256]) buffer1#14 )
-  (byte[1000]) SCREEN#1 ← phi( @19/(byte[1000]) SCREEN#2 )
+plot: from @17
+  (byte[256]) buffer1#13 ← phi( @17/(byte[256]) buffer1#15 )
+  (byte[1000]) SCREEN#1 ← phi( @17/(byte[1000]) SCREEN#2 )
   (byte*~) plot::$1 ← (byte[1000]) SCREEN#1
   (byte*~) plot::$2 ← (byte*~) plot::$1 + (byte) 212
   (byte*) plot::line#0 ← (byte*~) plot::$2
   to:plot::@1
-plot::@1: from @15 plot
-  (byte) plot::y#4 ← phi( @15/(byte) plot::y#1 plot/(byte) 16 )
-  (byte[256]) buffer1#8 ← phi( @15/(byte[256]) buffer1#11 plot/(byte[256]) buffer1#12 )
-  (byte) plot::i#3 ← phi( @15/(byte) plot::i#4 plot/(byte) 0 )
-  (byte*) plot::line#4 ← phi( @15/(byte*) plot::line#1 plot/(byte*) plot::line#0 )
+plot::@1: from @12 plot
+  (byte) plot::y#4 ← phi( @12/(byte) plot::y#1 plot/(byte) 16 )
+  (byte[256]) buffer1#8 ← phi( @12/(byte[256]) buffer1#12 plot/(byte[256]) buffer1#13 )
+  (byte) plot::i#3 ← phi( @12/(byte) plot::i#4 plot/(byte) 0 )
+  (byte*) plot::line#4 ← phi( @12/(byte*) plot::line#1 plot/(byte*) plot::line#0 )
   to:plot::@2
 plot::@2: from plot::@1 plot::@2
   (byte) plot::y#3 ← phi( plot::@1/(byte) plot::y#4 plot::@2/(byte) plot::y#3 )
@@ -1529,10 +1619,10 @@ plot::@2: from plot::@1 plot::@2
   (byte) plot::x#1 ← ++ (byte) plot::x#2
   (boolean~) plot::$4 ← (byte) plot::x#1 < (byte) 16
   if((boolean~) plot::$4) goto plot::@2
-  to:@15
-@15: from plot::@2
+  to:@12
+@12: from plot::@2
   (byte) plot::i#4 ← phi( plot::@2/(byte) plot::i#1 )
-  (byte[256]) buffer1#11 ← phi( plot::@2/(byte[256]) buffer1#4 )
+  (byte[256]) buffer1#12 ← phi( plot::@2/(byte[256]) buffer1#4 )
   (byte) plot::y#2 ← phi( plot::@2/(byte) plot::y#3 )
   (byte*) plot::line#3 ← phi( plot::@2/(byte*) plot::line#2 )
   (byte*~) plot::$5 ← (byte*) plot::line#3 + (byte) 40
@@ -1541,97 +1631,106 @@ plot::@2: from plot::@1 plot::@2
   (boolean~) plot::$6 ← (byte) plot::y#1 != (byte) 0
   if((boolean~) plot::$6) goto plot::@1
   to:plot::@return
-plot::@return: from @15
+plot::@return: from @12
   return 
   to:@RETURN
-@END: from @20
+@END: from @BEGIN
 
+Alias (byte[256]) buffer2#14 = (byte[256]) buffer2#16 
+Alias (byte[256]) buffer1#22 = (byte[256]) buffer1#9 (byte[256]) buffer1#5 
+Alias (byte[1000]) SCREEN#10 = (byte[1000]) SCREEN#12 
+Alias (byte*) RASTER#7 = (byte*) RASTER#9 
 Alias (byte[256]) buffer2#10 = (byte[256]) buffer2#11 
-Alias (byte[256]) buffer1#17 = (byte[256]) buffer1#18 
+Alias (byte[256]) buffer1#18 = (byte[256]) buffer1#19 
 Alias (byte[1000]) SCREEN#6 = (byte[1000]) SCREEN#7 
-Alias (byte) c#4 = (byte) c#5 
+Alias (byte) main::c#4 = (byte) main::c#5 
 Alias (byte*) RASTER#1 = (byte*) RASTER#4 
-Alias (byte[256]) buffer2#15 = (byte[256]) buffer2#8 (byte[256]) buffer2#9 (byte[256]) buffer2#7 (byte[256]) buffer2#16 (byte[256]) buffer2#6 
-Alias (byte[256]) buffer1#10 = (byte[256]) buffer1#15 (byte[256]) buffer1#16 (byte[256]) buffer1#13 (byte[256]) buffer1#14 (byte[256]) buffer1#22 (byte[256]) buffer1#12 
+Alias (byte[256]) buffer2#15 = (byte[256]) buffer2#8 (byte[256]) buffer2#9 (byte[256]) buffer2#7 (byte[256]) buffer2#17 (byte[256]) buffer2#6 
+Alias (byte[256]) buffer1#11 = (byte[256]) buffer1#16 (byte[256]) buffer1#17 (byte[256]) buffer1#14 (byte[256]) buffer1#15 (byte[256]) buffer1#23 (byte[256]) buffer1#13 
 Alias (byte[1000]) SCREEN#1 = (byte[1000]) SCREEN#4 (byte[1000]) SCREEN#5 (byte[1000]) SCREEN#3 (byte[1000]) SCREEN#2 (byte[1000]) SCREEN#11 (byte*~) plot::$1 
-Alias (byte*) RASTER#10 = (byte*) RASTER#6 (byte*) RASTER#2 (byte*) RASTER#9 (byte*) RASTER#8 
-Alias (byte) c#2 = (byte) c#3 
+Alias (byte*) RASTER#10 = (byte*) RASTER#5 (byte*) RASTER#2 (byte*) RASTER#11 (byte*) RASTER#8 
+Alias (byte) main::c#2 = (byte) main::c#3 
 Alias (byte) flip::dstIdx#1 = (byte~) flip::$1 (byte) flip::dstIdx#4 
 Alias (byte[256]) buffer2#1 = (byte[256]) buffer2#5 (byte[256]) buffer2#4 
 Alias (byte) flip::srcIdx#1 = (byte) flip::srcIdx#4 
-Alias (byte[256]) buffer1#2 = (byte[256]) buffer1#9 (byte[256]) buffer1#7 
+Alias (byte[256]) buffer1#10 = (byte[256]) buffer1#2 (byte[256]) buffer1#7 
 Alias (byte) flip::r#2 = (byte) flip::r#3 
 Alias (byte*) plot::line#0 = (byte*~) plot::$2 
 Alias (byte) plot::i#1 = (byte) plot::i#4 
-Alias (byte[256]) buffer1#11 = (byte[256]) buffer1#4 
+Alias (byte[256]) buffer1#12 = (byte[256]) buffer1#4 
 Alias (byte) plot::y#2 = (byte) plot::y#3 
 Alias (byte*) plot::line#2 = (byte*) plot::line#3 
 Alias (byte*) plot::line#1 = (byte*~) plot::$5 
 Succesful SSA optimization Pass2AliasElimination
 CONTROL FLOW GRAPH
 @BEGIN: from
-  call prepare param-assignment
-  to:@18
-@18: from @BEGIN
+  call main param-assignment
+  to:@END
+main: from @BEGIN
   (byte[256]) buffer2#14 ← phi( @BEGIN/(word) 4352 )
-  (byte[256]) buffer1#21 ← phi( @BEGIN/(word) 4096 )
   (byte[1000]) SCREEN#10 ← phi( @BEGIN/(word) 1024 )
   (byte*) RASTER#7 ← phi( @BEGIN/(word) 53266 )
+  (byte[256]) buffer1#22 ← phi( @BEGIN/(word) 4096 )
+  call prepare param-assignment
+  to:@16
+@16: from main
+  to:main::@1
+main::@1: from @16 @18
+  (byte[256]) buffer1#21 ← phi( @16/(byte[256]) buffer1#22 @18/(byte[256]) buffer1#11 )
+  (byte[256]) buffer2#13 ← phi( @16/(byte[256]) buffer2#14 @18/(byte[256]) buffer2#15 )
+  (byte[1000]) SCREEN#9 ← phi( @16/(byte[1000]) SCREEN#10 @18/(byte[1000]) SCREEN#1 )
+  (byte*) RASTER#6 ← phi( @16/(byte*) RASTER#7 @18/(byte*) RASTER#10 )
+  to:main::@2
+main::@2: from @2 main::@1
+  (byte[256]) buffer2#12 ← phi( @2/(byte[256]) buffer2#15 main::@1/(byte[256]) buffer2#13 )
+  (byte[256]) buffer1#20 ← phi( @2/(byte[256]) buffer1#11 main::@1/(byte[256]) buffer1#21 )
+  (byte[1000]) SCREEN#8 ← phi( @2/(byte[1000]) SCREEN#1 main::@1/(byte[1000]) SCREEN#9 )
+  (byte) main::c#6 ← phi( @2/(byte) main::c#1 main::@1/(byte) 25 )
+  (byte*) RASTER#3 ← phi( @2/(byte*) RASTER#10 main::@1/(byte*) RASTER#6 )
+  to:main::@3
+main::@3: from main::@2 main::@3
+  (byte[256]) buffer1#18 ← phi( main::@2/(byte[256]) buffer1#20 main::@3/(byte[256]) buffer1#18 )
+  (byte[256]) buffer2#10 ← phi( main::@2/(byte[256]) buffer2#12 main::@3/(byte[256]) buffer2#10 )
+  (byte[1000]) SCREEN#6 ← phi( main::@2/(byte[1000]) SCREEN#8 main::@3/(byte[1000]) SCREEN#6 )
+  (byte) main::c#4 ← phi( main::@2/(byte) main::c#6 main::@3/(byte) main::c#4 )
+  (byte*) RASTER#1 ← phi( main::@2/(byte*) RASTER#3 main::@3/(byte*) RASTER#1 )
+  (byte~) main::$1 ← * (byte*) RASTER#1
+  (boolean~) main::$2 ← (byte~) main::$1 != (byte) 254
+  if((boolean~) main::$2) goto main::@3
   to:@1
-@1: from @18 @20
-  (byte[256]) buffer1#20 ← phi( @18/(byte[256]) buffer1#21 @20/(byte[256]) buffer1#10 )
-  (byte[256]) buffer2#13 ← phi( @18/(byte[256]) buffer2#14 @20/(byte[256]) buffer2#15 )
-  (byte[1000]) SCREEN#9 ← phi( @18/(byte[1000]) SCREEN#10 @20/(byte[1000]) SCREEN#1 )
-  (byte*) RASTER#5 ← phi( @18/(byte*) RASTER#7 @20/(byte*) RASTER#10 )
+@1: from main::@3
+  to:main::@4
+main::@4: from @1 main::@4
+  (byte[256]) buffer1#11 ← phi( @1/(byte[256]) buffer1#18 main::@4/(byte[256]) buffer1#11 )
+  (byte[256]) buffer2#15 ← phi( @1/(byte[256]) buffer2#10 main::@4/(byte[256]) buffer2#15 )
+  (byte[1000]) SCREEN#1 ← phi( @1/(byte[1000]) SCREEN#6 main::@4/(byte[1000]) SCREEN#1 )
+  (byte) main::c#2 ← phi( @1/(byte) main::c#4 main::@4/(byte) main::c#2 )
+  (byte*) RASTER#10 ← phi( @1/(byte*) RASTER#1 main::@4/(byte*) RASTER#10 )
+  (byte~) main::$3 ← * (byte*) RASTER#10
+  (boolean~) main::$4 ← (byte~) main::$3 != (byte) 255
+  if((boolean~) main::$4) goto main::@4
   to:@2
-@2: from @1 @6
-  (byte[256]) buffer2#12 ← phi( @1/(byte[256]) buffer2#13 @6/(byte[256]) buffer2#15 )
-  (byte[256]) buffer1#19 ← phi( @1/(byte[256]) buffer1#20 @6/(byte[256]) buffer1#10 )
-  (byte[1000]) SCREEN#8 ← phi( @1/(byte[1000]) SCREEN#9 @6/(byte[1000]) SCREEN#1 )
-  (byte) c#6 ← phi( @1/(byte) 25 @6/(byte) c#1 )
-  (byte*) RASTER#3 ← phi( @1/(byte*) RASTER#5 @6/(byte*) RASTER#10 )
+@2: from main::@4
+  (byte) main::c#1 ← -- (byte) main::c#2
+  (boolean~) main::$5 ← (byte) main::c#1 != (byte) 0
+  if((boolean~) main::$5) goto main::@2
   to:@3
-@3: from @2 @3
-  (byte[256]) buffer1#17 ← phi( @2/(byte[256]) buffer1#19 @3/(byte[256]) buffer1#17 )
-  (byte[256]) buffer2#10 ← phi( @2/(byte[256]) buffer2#12 @3/(byte[256]) buffer2#10 )
-  (byte[1000]) SCREEN#6 ← phi( @2/(byte[1000]) SCREEN#8 @3/(byte[1000]) SCREEN#6 )
-  (byte) c#4 ← phi( @2/(byte) c#6 @3/(byte) c#4 )
-  (byte*) RASTER#1 ← phi( @2/(byte*) RASTER#3 @3/(byte*) RASTER#1 )
-  (byte~) $1 ← * (byte*) RASTER#1
-  (boolean~) $2 ← (byte~) $1 != (byte) 254
-  if((boolean~) $2) goto @3
-  to:@5
-@5: from @3
-  to:@4
-@4: from @4 @5
-  (byte[256]) buffer1#10 ← phi( @4/(byte[256]) buffer1#10 @5/(byte[256]) buffer1#17 )
-  (byte[256]) buffer2#15 ← phi( @4/(byte[256]) buffer2#15 @5/(byte[256]) buffer2#10 )
-  (byte[1000]) SCREEN#1 ← phi( @4/(byte[1000]) SCREEN#1 @5/(byte[1000]) SCREEN#6 )
-  (byte) c#2 ← phi( @4/(byte) c#2 @5/(byte) c#4 )
-  (byte*) RASTER#10 ← phi( @4/(byte*) RASTER#10 @5/(byte*) RASTER#1 )
-  (byte~) $3 ← * (byte*) RASTER#10
-  (boolean~) $4 ← (byte~) $3 != (byte) 255
-  if((boolean~) $4) goto @4
-  to:@6
-@6: from @4
-  (byte) c#1 ← -- (byte) c#2
-  (boolean~) $5 ← (byte) c#1 != (byte) 0
-  if((boolean~) $5) goto @2
-  to:@7
-@7: from @6
+@3: from @2
   call flip param-assignment
-  to:@19
-@19: from @7
+  to:@17
+@17: from @3
   call plot param-assignment
-  to:@20
-@20: from @19
-  if(true) goto @1
-  to:@END
-prepare: from @BEGIN
-  (byte[256]) buffer1#5 ← phi( @BEGIN/(word) 4096 )
+  to:@18
+@18: from @17
+  if(true) goto main::@1
+  to:main::@return
+main::@return: from @18
+  return 
+  to:@RETURN
+prepare: from main
   to:prepare::@1
 prepare::@1: from prepare prepare::@1
-  (byte[256]) buffer1#1 ← phi( prepare/(byte[256]) buffer1#5 prepare::@1/(byte[256]) buffer1#1 )
+  (byte[256]) buffer1#1 ← phi( prepare/(byte[256]) buffer1#22 prepare::@1/(byte[256]) buffer1#1 )
   (byte) prepare::i#2 ← phi( prepare/(byte) 0 prepare::@1/(byte) prepare::i#1 )
   *((byte[256]) buffer1#1 + (byte) prepare::i#2) ← (byte) prepare::i#2
   (byte) prepare::i#1 ← ++ (byte) prepare::i#2
@@ -1641,14 +1740,14 @@ prepare::@1: from prepare prepare::@1
 prepare::@return: from prepare::@1
   return 
   to:@RETURN
-flip: from @7
+flip: from @3
   to:flip::@1
-flip::@1: from @11 flip
-  (byte) flip::r#4 ← phi( @11/(byte) flip::r#1 flip/(byte) 16 )
-  (byte[256]) buffer1#6 ← phi( @11/(byte[256]) buffer1#2 flip/(byte[256]) buffer1#10 )
-  (byte) flip::srcIdx#3 ← phi( @11/(byte) flip::srcIdx#1 flip/(byte) 0 )
-  (byte[256]) buffer2#3 ← phi( @11/(byte[256]) buffer2#1 flip/(byte[256]) buffer2#15 )
-  (byte) flip::dstIdx#5 ← phi( @11/(byte) flip::dstIdx#2 flip/(byte) 15 )
+flip::@1: from @8 flip
+  (byte) flip::r#4 ← phi( @8/(byte) flip::r#1 flip/(byte) 16 )
+  (byte[256]) buffer1#6 ← phi( @8/(byte[256]) buffer1#10 flip/(byte[256]) buffer1#11 )
+  (byte) flip::srcIdx#3 ← phi( @8/(byte) flip::srcIdx#1 flip/(byte) 0 )
+  (byte[256]) buffer2#3 ← phi( @8/(byte[256]) buffer2#1 flip/(byte[256]) buffer2#15 )
+  (byte) flip::dstIdx#5 ← phi( @8/(byte) flip::dstIdx#2 flip/(byte) 15 )
   to:flip::@2
 flip::@2: from flip::@1 flip::@2
   (byte) flip::r#2 ← phi( flip::@1/(byte) flip::r#4 flip::@2/(byte) flip::r#2 )
@@ -1656,27 +1755,27 @@ flip::@2: from flip::@1 flip::@2
   (byte) flip::dstIdx#3 ← phi( flip::@1/(byte) flip::dstIdx#5 flip::@2/(byte) flip::dstIdx#1 )
   (byte[256]) buffer2#1 ← phi( flip::@1/(byte[256]) buffer2#3 flip::@2/(byte[256]) buffer2#1 )
   (byte) flip::srcIdx#2 ← phi( flip::@1/(byte) flip::srcIdx#3 flip::@2/(byte) flip::srcIdx#1 )
-  (byte[256]) buffer1#2 ← phi( flip::@1/(byte[256]) buffer1#6 flip::@2/(byte[256]) buffer1#2 )
-  (byte~) flip::$0 ← (byte[256]) buffer1#2 *idx (byte) flip::srcIdx#2
+  (byte[256]) buffer1#10 ← phi( flip::@1/(byte[256]) buffer1#6 flip::@2/(byte[256]) buffer1#10 )
+  (byte~) flip::$0 ← (byte[256]) buffer1#10 *idx (byte) flip::srcIdx#2
   *((byte[256]) buffer2#1 + (byte) flip::dstIdx#3) ← (byte~) flip::$0
   (byte) flip::srcIdx#1 ← ++ (byte) flip::srcIdx#2
   (byte) flip::dstIdx#1 ← (byte) flip::dstIdx#3 + (byte) 16
   (byte) flip::c#1 ← -- (byte) flip::c#2
   (boolean~) flip::$2 ← (byte) flip::c#1 != (byte) 0
   if((boolean~) flip::$2) goto flip::@2
-  to:@11
-@11: from flip::@2
+  to:@8
+@8: from flip::@2
   (byte) flip::dstIdx#2 ← -- (byte) flip::dstIdx#1
   (byte) flip::r#1 ← -- (byte) flip::r#2
   (boolean~) flip::$3 ← (byte) flip::r#1 != (byte) 0
   if((boolean~) flip::$3) goto flip::@1
-  to:@12
-@12: from @11
+  to:@9
+@9: from @8
   to:flip::@3
-flip::@3: from @12 flip::@3
-  (byte[256]) buffer1#3 ← phi( @12/(byte[256]) buffer1#2 flip::@3/(byte[256]) buffer1#3 )
-  (byte) flip::i#2 ← phi( @12/(byte) 0 flip::@3/(byte) flip::i#1 )
-  (byte[256]) buffer2#2 ← phi( @12/(byte[256]) buffer2#1 flip::@3/(byte[256]) buffer2#2 )
+flip::@3: from @9 flip::@3
+  (byte[256]) buffer1#3 ← phi( @9/(byte[256]) buffer1#10 flip::@3/(byte[256]) buffer1#3 )
+  (byte) flip::i#2 ← phi( @9/(byte) 0 flip::@3/(byte) flip::i#1 )
+  (byte[256]) buffer2#2 ← phi( @9/(byte[256]) buffer2#1 flip::@3/(byte[256]) buffer2#2 )
   (byte~) flip::$4 ← (byte[256]) buffer2#2 *idx (byte) flip::i#2
   *((byte[256]) buffer1#3 + (byte) flip::i#2) ← (byte~) flip::$4
   (byte) flip::i#1 ← ++ (byte) flip::i#2
@@ -1686,101 +1785,106 @@ flip::@3: from @12 flip::@3
 flip::@return: from flip::@3
   return 
   to:@RETURN
-plot: from @19
+plot: from @17
   (byte*) plot::line#0 ← (byte[1000]) SCREEN#1 + (byte) 212
   to:plot::@1
-plot::@1: from @15 plot
-  (byte) plot::y#4 ← phi( @15/(byte) plot::y#1 plot/(byte) 16 )
-  (byte[256]) buffer1#8 ← phi( @15/(byte[256]) buffer1#11 plot/(byte[256]) buffer1#10 )
-  (byte) plot::i#3 ← phi( @15/(byte) plot::i#1 plot/(byte) 0 )
-  (byte*) plot::line#4 ← phi( @15/(byte*) plot::line#1 plot/(byte*) plot::line#0 )
+plot::@1: from @12 plot
+  (byte) plot::y#4 ← phi( @12/(byte) plot::y#1 plot/(byte) 16 )
+  (byte[256]) buffer1#8 ← phi( @12/(byte[256]) buffer1#12 plot/(byte[256]) buffer1#11 )
+  (byte) plot::i#3 ← phi( @12/(byte) plot::i#1 plot/(byte) 0 )
+  (byte*) plot::line#4 ← phi( @12/(byte*) plot::line#1 plot/(byte*) plot::line#0 )
   to:plot::@2
 plot::@2: from plot::@1 plot::@2
   (byte) plot::y#2 ← phi( plot::@1/(byte) plot::y#4 plot::@2/(byte) plot::y#2 )
   (byte) plot::x#2 ← phi( plot::@1/(byte) 0 plot::@2/(byte) plot::x#1 )
   (byte*) plot::line#2 ← phi( plot::@1/(byte*) plot::line#4 plot::@2/(byte*) plot::line#2 )
   (byte) plot::i#2 ← phi( plot::@1/(byte) plot::i#3 plot::@2/(byte) plot::i#1 )
-  (byte[256]) buffer1#11 ← phi( plot::@1/(byte[256]) buffer1#8 plot::@2/(byte[256]) buffer1#11 )
-  (byte~) plot::$3 ← (byte[256]) buffer1#11 *idx (byte) plot::i#2
+  (byte[256]) buffer1#12 ← phi( plot::@1/(byte[256]) buffer1#8 plot::@2/(byte[256]) buffer1#12 )
+  (byte~) plot::$3 ← (byte[256]) buffer1#12 *idx (byte) plot::i#2
   *((byte*) plot::line#2 + (byte) plot::x#2) ← (byte~) plot::$3
   (byte) plot::i#1 ← ++ (byte) plot::i#2
   (byte) plot::x#1 ← ++ (byte) plot::x#2
   (boolean~) plot::$4 ← (byte) plot::x#1 < (byte) 16
   if((boolean~) plot::$4) goto plot::@2
-  to:@15
-@15: from plot::@2
+  to:@12
+@12: from plot::@2
   (byte*) plot::line#1 ← (byte*) plot::line#2 + (byte) 40
   (byte) plot::y#1 ← -- (byte) plot::y#2
   (boolean~) plot::$6 ← (byte) plot::y#1 != (byte) 0
   if((boolean~) plot::$6) goto plot::@1
   to:plot::@return
-plot::@return: from @15
+plot::@return: from @12
   return 
   to:@RETURN
-@END: from @20
+@END: from @BEGIN
 
 Redundant Phi (byte[256]) buffer2#14 (word) 4352
-Redundant Phi (byte[256]) buffer1#21 (word) 4096
 Redundant Phi (byte[1000]) SCREEN#10 (word) 1024
 Redundant Phi (byte*) RASTER#7 (word) 53266
-Redundant Phi (byte[256]) buffer1#5 (word) 4096
+Redundant Phi (byte[256]) buffer1#22 (word) 4096
 Succesful SSA optimization Pass2RedundantPhiElimination
 CONTROL FLOW GRAPH
 @BEGIN: from
-  call prepare param-assignment
-  to:@18
-@18: from @BEGIN
-  to:@1
-@1: from @18 @20
-  (byte[256]) buffer1#20 ← phi( @18/(word) 4096 @20/(byte[256]) buffer1#10 )
-  (byte[256]) buffer2#13 ← phi( @18/(word) 4352 @20/(byte[256]) buffer2#15 )
-  (byte[1000]) SCREEN#9 ← phi( @18/(word) 1024 @20/(byte[1000]) SCREEN#1 )
-  (byte*) RASTER#5 ← phi( @18/(word) 53266 @20/(byte*) RASTER#10 )
-  to:@2
-@2: from @1 @6
-  (byte[256]) buffer2#12 ← phi( @1/(byte[256]) buffer2#13 @6/(byte[256]) buffer2#15 )
-  (byte[256]) buffer1#19 ← phi( @1/(byte[256]) buffer1#20 @6/(byte[256]) buffer1#10 )
-  (byte[1000]) SCREEN#8 ← phi( @1/(byte[1000]) SCREEN#9 @6/(byte[1000]) SCREEN#1 )
-  (byte) c#6 ← phi( @1/(byte) 25 @6/(byte) c#1 )
-  (byte*) RASTER#3 ← phi( @1/(byte*) RASTER#5 @6/(byte*) RASTER#10 )
-  to:@3
-@3: from @2 @3
-  (byte[256]) buffer1#17 ← phi( @2/(byte[256]) buffer1#19 @3/(byte[256]) buffer1#17 )
-  (byte[256]) buffer2#10 ← phi( @2/(byte[256]) buffer2#12 @3/(byte[256]) buffer2#10 )
-  (byte[1000]) SCREEN#6 ← phi( @2/(byte[1000]) SCREEN#8 @3/(byte[1000]) SCREEN#6 )
-  (byte) c#4 ← phi( @2/(byte) c#6 @3/(byte) c#4 )
-  (byte*) RASTER#1 ← phi( @2/(byte*) RASTER#3 @3/(byte*) RASTER#1 )
-  (byte~) $1 ← * (byte*) RASTER#1
-  (boolean~) $2 ← (byte~) $1 != (byte) 254
-  if((boolean~) $2) goto @3
-  to:@5
-@5: from @3
-  to:@4
-@4: from @4 @5
-  (byte[256]) buffer1#10 ← phi( @4/(byte[256]) buffer1#10 @5/(byte[256]) buffer1#17 )
-  (byte[256]) buffer2#15 ← phi( @4/(byte[256]) buffer2#15 @5/(byte[256]) buffer2#10 )
-  (byte[1000]) SCREEN#1 ← phi( @4/(byte[1000]) SCREEN#1 @5/(byte[1000]) SCREEN#6 )
-  (byte) c#2 ← phi( @4/(byte) c#2 @5/(byte) c#4 )
-  (byte*) RASTER#10 ← phi( @4/(byte*) RASTER#10 @5/(byte*) RASTER#1 )
-  (byte~) $3 ← * (byte*) RASTER#10
-  (boolean~) $4 ← (byte~) $3 != (byte) 255
-  if((boolean~) $4) goto @4
-  to:@6
-@6: from @4
-  (byte) c#1 ← -- (byte) c#2
-  (boolean~) $5 ← (byte) c#1 != (byte) 0
-  if((boolean~) $5) goto @2
-  to:@7
-@7: from @6
-  call flip param-assignment
-  to:@19
-@19: from @7
-  call plot param-assignment
-  to:@20
-@20: from @19
-  if(true) goto @1
+  call main param-assignment
   to:@END
-prepare: from @BEGIN
+main: from @BEGIN
+  call prepare param-assignment
+  to:@16
+@16: from main
+  to:main::@1
+main::@1: from @16 @18
+  (byte[256]) buffer1#21 ← phi( @16/(word) 4096 @18/(byte[256]) buffer1#11 )
+  (byte[256]) buffer2#13 ← phi( @16/(word) 4352 @18/(byte[256]) buffer2#15 )
+  (byte[1000]) SCREEN#9 ← phi( @16/(word) 1024 @18/(byte[1000]) SCREEN#1 )
+  (byte*) RASTER#6 ← phi( @16/(word) 53266 @18/(byte*) RASTER#10 )
+  to:main::@2
+main::@2: from @2 main::@1
+  (byte[256]) buffer2#12 ← phi( @2/(byte[256]) buffer2#15 main::@1/(byte[256]) buffer2#13 )
+  (byte[256]) buffer1#20 ← phi( @2/(byte[256]) buffer1#11 main::@1/(byte[256]) buffer1#21 )
+  (byte[1000]) SCREEN#8 ← phi( @2/(byte[1000]) SCREEN#1 main::@1/(byte[1000]) SCREEN#9 )
+  (byte) main::c#6 ← phi( @2/(byte) main::c#1 main::@1/(byte) 25 )
+  (byte*) RASTER#3 ← phi( @2/(byte*) RASTER#10 main::@1/(byte*) RASTER#6 )
+  to:main::@3
+main::@3: from main::@2 main::@3
+  (byte[256]) buffer1#18 ← phi( main::@2/(byte[256]) buffer1#20 main::@3/(byte[256]) buffer1#18 )
+  (byte[256]) buffer2#10 ← phi( main::@2/(byte[256]) buffer2#12 main::@3/(byte[256]) buffer2#10 )
+  (byte[1000]) SCREEN#6 ← phi( main::@2/(byte[1000]) SCREEN#8 main::@3/(byte[1000]) SCREEN#6 )
+  (byte) main::c#4 ← phi( main::@2/(byte) main::c#6 main::@3/(byte) main::c#4 )
+  (byte*) RASTER#1 ← phi( main::@2/(byte*) RASTER#3 main::@3/(byte*) RASTER#1 )
+  (byte~) main::$1 ← * (byte*) RASTER#1
+  (boolean~) main::$2 ← (byte~) main::$1 != (byte) 254
+  if((boolean~) main::$2) goto main::@3
+  to:@1
+@1: from main::@3
+  to:main::@4
+main::@4: from @1 main::@4
+  (byte[256]) buffer1#11 ← phi( @1/(byte[256]) buffer1#18 main::@4/(byte[256]) buffer1#11 )
+  (byte[256]) buffer2#15 ← phi( @1/(byte[256]) buffer2#10 main::@4/(byte[256]) buffer2#15 )
+  (byte[1000]) SCREEN#1 ← phi( @1/(byte[1000]) SCREEN#6 main::@4/(byte[1000]) SCREEN#1 )
+  (byte) main::c#2 ← phi( @1/(byte) main::c#4 main::@4/(byte) main::c#2 )
+  (byte*) RASTER#10 ← phi( @1/(byte*) RASTER#1 main::@4/(byte*) RASTER#10 )
+  (byte~) main::$3 ← * (byte*) RASTER#10
+  (boolean~) main::$4 ← (byte~) main::$3 != (byte) 255
+  if((boolean~) main::$4) goto main::@4
+  to:@2
+@2: from main::@4
+  (byte) main::c#1 ← -- (byte) main::c#2
+  (boolean~) main::$5 ← (byte) main::c#1 != (byte) 0
+  if((boolean~) main::$5) goto main::@2
+  to:@3
+@3: from @2
+  call flip param-assignment
+  to:@17
+@17: from @3
+  call plot param-assignment
+  to:@18
+@18: from @17
+  if(true) goto main::@1
+  to:main::@return
+main::@return: from @18
+  return 
+  to:@RETURN
+prepare: from main
   to:prepare::@1
 prepare::@1: from prepare prepare::@1
   (byte[256]) buffer1#1 ← phi( prepare/(word) 4096 prepare::@1/(byte[256]) buffer1#1 )
@@ -1793,14 +1897,14 @@ prepare::@1: from prepare prepare::@1
 prepare::@return: from prepare::@1
   return 
   to:@RETURN
-flip: from @7
+flip: from @3
   to:flip::@1
-flip::@1: from @11 flip
-  (byte) flip::r#4 ← phi( @11/(byte) flip::r#1 flip/(byte) 16 )
-  (byte[256]) buffer1#6 ← phi( @11/(byte[256]) buffer1#2 flip/(byte[256]) buffer1#10 )
-  (byte) flip::srcIdx#3 ← phi( @11/(byte) flip::srcIdx#1 flip/(byte) 0 )
-  (byte[256]) buffer2#3 ← phi( @11/(byte[256]) buffer2#1 flip/(byte[256]) buffer2#15 )
-  (byte) flip::dstIdx#5 ← phi( @11/(byte) flip::dstIdx#2 flip/(byte) 15 )
+flip::@1: from @8 flip
+  (byte) flip::r#4 ← phi( @8/(byte) flip::r#1 flip/(byte) 16 )
+  (byte[256]) buffer1#6 ← phi( @8/(byte[256]) buffer1#10 flip/(byte[256]) buffer1#11 )
+  (byte) flip::srcIdx#3 ← phi( @8/(byte) flip::srcIdx#1 flip/(byte) 0 )
+  (byte[256]) buffer2#3 ← phi( @8/(byte[256]) buffer2#1 flip/(byte[256]) buffer2#15 )
+  (byte) flip::dstIdx#5 ← phi( @8/(byte) flip::dstIdx#2 flip/(byte) 15 )
   to:flip::@2
 flip::@2: from flip::@1 flip::@2
   (byte) flip::r#2 ← phi( flip::@1/(byte) flip::r#4 flip::@2/(byte) flip::r#2 )
@@ -1808,27 +1912,27 @@ flip::@2: from flip::@1 flip::@2
   (byte) flip::dstIdx#3 ← phi( flip::@1/(byte) flip::dstIdx#5 flip::@2/(byte) flip::dstIdx#1 )
   (byte[256]) buffer2#1 ← phi( flip::@1/(byte[256]) buffer2#3 flip::@2/(byte[256]) buffer2#1 )
   (byte) flip::srcIdx#2 ← phi( flip::@1/(byte) flip::srcIdx#3 flip::@2/(byte) flip::srcIdx#1 )
-  (byte[256]) buffer1#2 ← phi( flip::@1/(byte[256]) buffer1#6 flip::@2/(byte[256]) buffer1#2 )
-  (byte~) flip::$0 ← (byte[256]) buffer1#2 *idx (byte) flip::srcIdx#2
+  (byte[256]) buffer1#10 ← phi( flip::@1/(byte[256]) buffer1#6 flip::@2/(byte[256]) buffer1#10 )
+  (byte~) flip::$0 ← (byte[256]) buffer1#10 *idx (byte) flip::srcIdx#2
   *((byte[256]) buffer2#1 + (byte) flip::dstIdx#3) ← (byte~) flip::$0
   (byte) flip::srcIdx#1 ← ++ (byte) flip::srcIdx#2
   (byte) flip::dstIdx#1 ← (byte) flip::dstIdx#3 + (byte) 16
   (byte) flip::c#1 ← -- (byte) flip::c#2
   (boolean~) flip::$2 ← (byte) flip::c#1 != (byte) 0
   if((boolean~) flip::$2) goto flip::@2
-  to:@11
-@11: from flip::@2
+  to:@8
+@8: from flip::@2
   (byte) flip::dstIdx#2 ← -- (byte) flip::dstIdx#1
   (byte) flip::r#1 ← -- (byte) flip::r#2
   (boolean~) flip::$3 ← (byte) flip::r#1 != (byte) 0
   if((boolean~) flip::$3) goto flip::@1
-  to:@12
-@12: from @11
+  to:@9
+@9: from @8
   to:flip::@3
-flip::@3: from @12 flip::@3
-  (byte[256]) buffer1#3 ← phi( @12/(byte[256]) buffer1#2 flip::@3/(byte[256]) buffer1#3 )
-  (byte) flip::i#2 ← phi( @12/(byte) 0 flip::@3/(byte) flip::i#1 )
-  (byte[256]) buffer2#2 ← phi( @12/(byte[256]) buffer2#1 flip::@3/(byte[256]) buffer2#2 )
+flip::@3: from @9 flip::@3
+  (byte[256]) buffer1#3 ← phi( @9/(byte[256]) buffer1#10 flip::@3/(byte[256]) buffer1#3 )
+  (byte) flip::i#2 ← phi( @9/(byte) 0 flip::@3/(byte) flip::i#1 )
+  (byte[256]) buffer2#2 ← phi( @9/(byte[256]) buffer2#1 flip::@3/(byte[256]) buffer2#2 )
   (byte~) flip::$4 ← (byte[256]) buffer2#2 *idx (byte) flip::i#2
   *((byte[256]) buffer1#3 + (byte) flip::i#2) ← (byte~) flip::$4
   (byte) flip::i#1 ← ++ (byte) flip::i#2
@@ -1838,115 +1942,121 @@ flip::@3: from @12 flip::@3
 flip::@return: from flip::@3
   return 
   to:@RETURN
-plot: from @19
+plot: from @17
   (byte*) plot::line#0 ← (byte[1000]) SCREEN#1 + (byte) 212
   to:plot::@1
-plot::@1: from @15 plot
-  (byte) plot::y#4 ← phi( @15/(byte) plot::y#1 plot/(byte) 16 )
-  (byte[256]) buffer1#8 ← phi( @15/(byte[256]) buffer1#11 plot/(byte[256]) buffer1#10 )
-  (byte) plot::i#3 ← phi( @15/(byte) plot::i#1 plot/(byte) 0 )
-  (byte*) plot::line#4 ← phi( @15/(byte*) plot::line#1 plot/(byte*) plot::line#0 )
+plot::@1: from @12 plot
+  (byte) plot::y#4 ← phi( @12/(byte) plot::y#1 plot/(byte) 16 )
+  (byte[256]) buffer1#8 ← phi( @12/(byte[256]) buffer1#12 plot/(byte[256]) buffer1#11 )
+  (byte) plot::i#3 ← phi( @12/(byte) plot::i#1 plot/(byte) 0 )
+  (byte*) plot::line#4 ← phi( @12/(byte*) plot::line#1 plot/(byte*) plot::line#0 )
   to:plot::@2
 plot::@2: from plot::@1 plot::@2
   (byte) plot::y#2 ← phi( plot::@1/(byte) plot::y#4 plot::@2/(byte) plot::y#2 )
   (byte) plot::x#2 ← phi( plot::@1/(byte) 0 plot::@2/(byte) plot::x#1 )
   (byte*) plot::line#2 ← phi( plot::@1/(byte*) plot::line#4 plot::@2/(byte*) plot::line#2 )
   (byte) plot::i#2 ← phi( plot::@1/(byte) plot::i#3 plot::@2/(byte) plot::i#1 )
-  (byte[256]) buffer1#11 ← phi( plot::@1/(byte[256]) buffer1#8 plot::@2/(byte[256]) buffer1#11 )
-  (byte~) plot::$3 ← (byte[256]) buffer1#11 *idx (byte) plot::i#2
+  (byte[256]) buffer1#12 ← phi( plot::@1/(byte[256]) buffer1#8 plot::@2/(byte[256]) buffer1#12 )
+  (byte~) plot::$3 ← (byte[256]) buffer1#12 *idx (byte) plot::i#2
   *((byte*) plot::line#2 + (byte) plot::x#2) ← (byte~) plot::$3
   (byte) plot::i#1 ← ++ (byte) plot::i#2
   (byte) plot::x#1 ← ++ (byte) plot::x#2
   (boolean~) plot::$4 ← (byte) plot::x#1 < (byte) 16
   if((boolean~) plot::$4) goto plot::@2
-  to:@15
-@15: from plot::@2
+  to:@12
+@12: from plot::@2
   (byte*) plot::line#1 ← (byte*) plot::line#2 + (byte) 40
   (byte) plot::y#1 ← -- (byte) plot::y#2
   (boolean~) plot::$6 ← (byte) plot::y#1 != (byte) 0
   if((boolean~) plot::$6) goto plot::@1
   to:plot::@return
-plot::@return: from @15
+plot::@return: from @12
   return 
   to:@RETURN
-@END: from @20
+@END: from @BEGIN
 
-Self Phi Eliminated (byte[256]) buffer1#17
+Self Phi Eliminated (byte[256]) buffer1#18
 Self Phi Eliminated (byte[256]) buffer2#10
 Self Phi Eliminated (byte[1000]) SCREEN#6
-Self Phi Eliminated (byte) c#4
+Self Phi Eliminated (byte) main::c#4
 Self Phi Eliminated (byte*) RASTER#1
-Self Phi Eliminated (byte[256]) buffer1#10
+Self Phi Eliminated (byte[256]) buffer1#11
 Self Phi Eliminated (byte[256]) buffer2#15
 Self Phi Eliminated (byte[1000]) SCREEN#1
-Self Phi Eliminated (byte) c#2
+Self Phi Eliminated (byte) main::c#2
 Self Phi Eliminated (byte*) RASTER#10
 Self Phi Eliminated (byte[256]) buffer1#1
 Self Phi Eliminated (byte) flip::r#2
 Self Phi Eliminated (byte[256]) buffer2#1
-Self Phi Eliminated (byte[256]) buffer1#2
+Self Phi Eliminated (byte[256]) buffer1#10
 Self Phi Eliminated (byte[256]) buffer1#3
 Self Phi Eliminated (byte[256]) buffer2#2
 Self Phi Eliminated (byte) plot::y#2
 Self Phi Eliminated (byte*) plot::line#2
-Self Phi Eliminated (byte[256]) buffer1#11
+Self Phi Eliminated (byte[256]) buffer1#12
 Succesful SSA optimization Pass2SelfPhiElimination
 CONTROL FLOW GRAPH
 @BEGIN: from
-  call prepare param-assignment
-  to:@18
-@18: from @BEGIN
-  to:@1
-@1: from @18 @20
-  (byte[256]) buffer1#20 ← phi( @18/(word) 4096 @20/(byte[256]) buffer1#10 )
-  (byte[256]) buffer2#13 ← phi( @18/(word) 4352 @20/(byte[256]) buffer2#15 )
-  (byte[1000]) SCREEN#9 ← phi( @18/(word) 1024 @20/(byte[1000]) SCREEN#1 )
-  (byte*) RASTER#5 ← phi( @18/(word) 53266 @20/(byte*) RASTER#10 )
-  to:@2
-@2: from @1 @6
-  (byte[256]) buffer2#12 ← phi( @1/(byte[256]) buffer2#13 @6/(byte[256]) buffer2#15 )
-  (byte[256]) buffer1#19 ← phi( @1/(byte[256]) buffer1#20 @6/(byte[256]) buffer1#10 )
-  (byte[1000]) SCREEN#8 ← phi( @1/(byte[1000]) SCREEN#9 @6/(byte[1000]) SCREEN#1 )
-  (byte) c#6 ← phi( @1/(byte) 25 @6/(byte) c#1 )
-  (byte*) RASTER#3 ← phi( @1/(byte*) RASTER#5 @6/(byte*) RASTER#10 )
-  to:@3
-@3: from @2 @3
-  (byte[256]) buffer1#17 ← phi( @2/(byte[256]) buffer1#19 )
-  (byte[256]) buffer2#10 ← phi( @2/(byte[256]) buffer2#12 )
-  (byte[1000]) SCREEN#6 ← phi( @2/(byte[1000]) SCREEN#8 )
-  (byte) c#4 ← phi( @2/(byte) c#6 )
-  (byte*) RASTER#1 ← phi( @2/(byte*) RASTER#3 )
-  (byte~) $1 ← * (byte*) RASTER#1
-  (boolean~) $2 ← (byte~) $1 != (byte) 254
-  if((boolean~) $2) goto @3
-  to:@5
-@5: from @3
-  to:@4
-@4: from @4 @5
-  (byte[256]) buffer1#10 ← phi( @5/(byte[256]) buffer1#17 )
-  (byte[256]) buffer2#15 ← phi( @5/(byte[256]) buffer2#10 )
-  (byte[1000]) SCREEN#1 ← phi( @5/(byte[1000]) SCREEN#6 )
-  (byte) c#2 ← phi( @5/(byte) c#4 )
-  (byte*) RASTER#10 ← phi( @5/(byte*) RASTER#1 )
-  (byte~) $3 ← * (byte*) RASTER#10
-  (boolean~) $4 ← (byte~) $3 != (byte) 255
-  if((boolean~) $4) goto @4
-  to:@6
-@6: from @4
-  (byte) c#1 ← -- (byte) c#2
-  (boolean~) $5 ← (byte) c#1 != (byte) 0
-  if((boolean~) $5) goto @2
-  to:@7
-@7: from @6
-  call flip param-assignment
-  to:@19
-@19: from @7
-  call plot param-assignment
-  to:@20
-@20: from @19
-  if(true) goto @1
+  call main param-assignment
   to:@END
-prepare: from @BEGIN
+main: from @BEGIN
+  call prepare param-assignment
+  to:@16
+@16: from main
+  to:main::@1
+main::@1: from @16 @18
+  (byte[256]) buffer1#21 ← phi( @16/(word) 4096 @18/(byte[256]) buffer1#11 )
+  (byte[256]) buffer2#13 ← phi( @16/(word) 4352 @18/(byte[256]) buffer2#15 )
+  (byte[1000]) SCREEN#9 ← phi( @16/(word) 1024 @18/(byte[1000]) SCREEN#1 )
+  (byte*) RASTER#6 ← phi( @16/(word) 53266 @18/(byte*) RASTER#10 )
+  to:main::@2
+main::@2: from @2 main::@1
+  (byte[256]) buffer2#12 ← phi( @2/(byte[256]) buffer2#15 main::@1/(byte[256]) buffer2#13 )
+  (byte[256]) buffer1#20 ← phi( @2/(byte[256]) buffer1#11 main::@1/(byte[256]) buffer1#21 )
+  (byte[1000]) SCREEN#8 ← phi( @2/(byte[1000]) SCREEN#1 main::@1/(byte[1000]) SCREEN#9 )
+  (byte) main::c#6 ← phi( @2/(byte) main::c#1 main::@1/(byte) 25 )
+  (byte*) RASTER#3 ← phi( @2/(byte*) RASTER#10 main::@1/(byte*) RASTER#6 )
+  to:main::@3
+main::@3: from main::@2 main::@3
+  (byte[256]) buffer1#18 ← phi( main::@2/(byte[256]) buffer1#20 )
+  (byte[256]) buffer2#10 ← phi( main::@2/(byte[256]) buffer2#12 )
+  (byte[1000]) SCREEN#6 ← phi( main::@2/(byte[1000]) SCREEN#8 )
+  (byte) main::c#4 ← phi( main::@2/(byte) main::c#6 )
+  (byte*) RASTER#1 ← phi( main::@2/(byte*) RASTER#3 )
+  (byte~) main::$1 ← * (byte*) RASTER#1
+  (boolean~) main::$2 ← (byte~) main::$1 != (byte) 254
+  if((boolean~) main::$2) goto main::@3
+  to:@1
+@1: from main::@3
+  to:main::@4
+main::@4: from @1 main::@4
+  (byte[256]) buffer1#11 ← phi( @1/(byte[256]) buffer1#18 )
+  (byte[256]) buffer2#15 ← phi( @1/(byte[256]) buffer2#10 )
+  (byte[1000]) SCREEN#1 ← phi( @1/(byte[1000]) SCREEN#6 )
+  (byte) main::c#2 ← phi( @1/(byte) main::c#4 )
+  (byte*) RASTER#10 ← phi( @1/(byte*) RASTER#1 )
+  (byte~) main::$3 ← * (byte*) RASTER#10
+  (boolean~) main::$4 ← (byte~) main::$3 != (byte) 255
+  if((boolean~) main::$4) goto main::@4
+  to:@2
+@2: from main::@4
+  (byte) main::c#1 ← -- (byte) main::c#2
+  (boolean~) main::$5 ← (byte) main::c#1 != (byte) 0
+  if((boolean~) main::$5) goto main::@2
+  to:@3
+@3: from @2
+  call flip param-assignment
+  to:@17
+@17: from @3
+  call plot param-assignment
+  to:@18
+@18: from @17
+  if(true) goto main::@1
+  to:main::@return
+main::@return: from @18
+  return 
+  to:@RETURN
+prepare: from main
   to:prepare::@1
 prepare::@1: from prepare prepare::@1
   (byte[256]) buffer1#1 ← phi( prepare/(word) 4096 )
@@ -1959,14 +2069,14 @@ prepare::@1: from prepare prepare::@1
 prepare::@return: from prepare::@1
   return 
   to:@RETURN
-flip: from @7
+flip: from @3
   to:flip::@1
-flip::@1: from @11 flip
-  (byte) flip::r#4 ← phi( @11/(byte) flip::r#1 flip/(byte) 16 )
-  (byte[256]) buffer1#6 ← phi( @11/(byte[256]) buffer1#2 flip/(byte[256]) buffer1#10 )
-  (byte) flip::srcIdx#3 ← phi( @11/(byte) flip::srcIdx#1 flip/(byte) 0 )
-  (byte[256]) buffer2#3 ← phi( @11/(byte[256]) buffer2#1 flip/(byte[256]) buffer2#15 )
-  (byte) flip::dstIdx#5 ← phi( @11/(byte) flip::dstIdx#2 flip/(byte) 15 )
+flip::@1: from @8 flip
+  (byte) flip::r#4 ← phi( @8/(byte) flip::r#1 flip/(byte) 16 )
+  (byte[256]) buffer1#6 ← phi( @8/(byte[256]) buffer1#10 flip/(byte[256]) buffer1#11 )
+  (byte) flip::srcIdx#3 ← phi( @8/(byte) flip::srcIdx#1 flip/(byte) 0 )
+  (byte[256]) buffer2#3 ← phi( @8/(byte[256]) buffer2#1 flip/(byte[256]) buffer2#15 )
+  (byte) flip::dstIdx#5 ← phi( @8/(byte) flip::dstIdx#2 flip/(byte) 15 )
   to:flip::@2
 flip::@2: from flip::@1 flip::@2
   (byte) flip::r#2 ← phi( flip::@1/(byte) flip::r#4 )
@@ -1974,27 +2084,27 @@ flip::@2: from flip::@1 flip::@2
   (byte) flip::dstIdx#3 ← phi( flip::@1/(byte) flip::dstIdx#5 flip::@2/(byte) flip::dstIdx#1 )
   (byte[256]) buffer2#1 ← phi( flip::@1/(byte[256]) buffer2#3 )
   (byte) flip::srcIdx#2 ← phi( flip::@1/(byte) flip::srcIdx#3 flip::@2/(byte) flip::srcIdx#1 )
-  (byte[256]) buffer1#2 ← phi( flip::@1/(byte[256]) buffer1#6 )
-  (byte~) flip::$0 ← (byte[256]) buffer1#2 *idx (byte) flip::srcIdx#2
+  (byte[256]) buffer1#10 ← phi( flip::@1/(byte[256]) buffer1#6 )
+  (byte~) flip::$0 ← (byte[256]) buffer1#10 *idx (byte) flip::srcIdx#2
   *((byte[256]) buffer2#1 + (byte) flip::dstIdx#3) ← (byte~) flip::$0
   (byte) flip::srcIdx#1 ← ++ (byte) flip::srcIdx#2
   (byte) flip::dstIdx#1 ← (byte) flip::dstIdx#3 + (byte) 16
   (byte) flip::c#1 ← -- (byte) flip::c#2
   (boolean~) flip::$2 ← (byte) flip::c#1 != (byte) 0
   if((boolean~) flip::$2) goto flip::@2
-  to:@11
-@11: from flip::@2
+  to:@8
+@8: from flip::@2
   (byte) flip::dstIdx#2 ← -- (byte) flip::dstIdx#1
   (byte) flip::r#1 ← -- (byte) flip::r#2
   (boolean~) flip::$3 ← (byte) flip::r#1 != (byte) 0
   if((boolean~) flip::$3) goto flip::@1
-  to:@12
-@12: from @11
+  to:@9
+@9: from @8
   to:flip::@3
-flip::@3: from @12 flip::@3
-  (byte[256]) buffer1#3 ← phi( @12/(byte[256]) buffer1#2 )
-  (byte) flip::i#2 ← phi( @12/(byte) 0 flip::@3/(byte) flip::i#1 )
-  (byte[256]) buffer2#2 ← phi( @12/(byte[256]) buffer2#1 )
+flip::@3: from @9 flip::@3
+  (byte[256]) buffer1#3 ← phi( @9/(byte[256]) buffer1#10 )
+  (byte) flip::i#2 ← phi( @9/(byte) 0 flip::@3/(byte) flip::i#1 )
+  (byte[256]) buffer2#2 ← phi( @9/(byte[256]) buffer2#1 )
   (byte~) flip::$4 ← (byte[256]) buffer2#2 *idx (byte) flip::i#2
   *((byte[256]) buffer1#3 + (byte) flip::i#2) ← (byte~) flip::$4
   (byte) flip::i#1 ← ++ (byte) flip::i#2
@@ -2004,42 +2114,42 @@ flip::@3: from @12 flip::@3
 flip::@return: from flip::@3
   return 
   to:@RETURN
-plot: from @19
+plot: from @17
   (byte*) plot::line#0 ← (byte[1000]) SCREEN#1 + (byte) 212
   to:plot::@1
-plot::@1: from @15 plot
-  (byte) plot::y#4 ← phi( @15/(byte) plot::y#1 plot/(byte) 16 )
-  (byte[256]) buffer1#8 ← phi( @15/(byte[256]) buffer1#11 plot/(byte[256]) buffer1#10 )
-  (byte) plot::i#3 ← phi( @15/(byte) plot::i#1 plot/(byte) 0 )
-  (byte*) plot::line#4 ← phi( @15/(byte*) plot::line#1 plot/(byte*) plot::line#0 )
+plot::@1: from @12 plot
+  (byte) plot::y#4 ← phi( @12/(byte) plot::y#1 plot/(byte) 16 )
+  (byte[256]) buffer1#8 ← phi( @12/(byte[256]) buffer1#12 plot/(byte[256]) buffer1#11 )
+  (byte) plot::i#3 ← phi( @12/(byte) plot::i#1 plot/(byte) 0 )
+  (byte*) plot::line#4 ← phi( @12/(byte*) plot::line#1 plot/(byte*) plot::line#0 )
   to:plot::@2
 plot::@2: from plot::@1 plot::@2
   (byte) plot::y#2 ← phi( plot::@1/(byte) plot::y#4 )
   (byte) plot::x#2 ← phi( plot::@1/(byte) 0 plot::@2/(byte) plot::x#1 )
   (byte*) plot::line#2 ← phi( plot::@1/(byte*) plot::line#4 )
   (byte) plot::i#2 ← phi( plot::@1/(byte) plot::i#3 plot::@2/(byte) plot::i#1 )
-  (byte[256]) buffer1#11 ← phi( plot::@1/(byte[256]) buffer1#8 )
-  (byte~) plot::$3 ← (byte[256]) buffer1#11 *idx (byte) plot::i#2
+  (byte[256]) buffer1#12 ← phi( plot::@1/(byte[256]) buffer1#8 )
+  (byte~) plot::$3 ← (byte[256]) buffer1#12 *idx (byte) plot::i#2
   *((byte*) plot::line#2 + (byte) plot::x#2) ← (byte~) plot::$3
   (byte) plot::i#1 ← ++ (byte) plot::i#2
   (byte) plot::x#1 ← ++ (byte) plot::x#2
   (boolean~) plot::$4 ← (byte) plot::x#1 < (byte) 16
   if((boolean~) plot::$4) goto plot::@2
-  to:@15
-@15: from plot::@2
+  to:@12
+@12: from plot::@2
   (byte*) plot::line#1 ← (byte*) plot::line#2 + (byte) 40
   (byte) plot::y#1 ← -- (byte) plot::y#2
   (boolean~) plot::$6 ← (byte) plot::y#1 != (byte) 0
   if((boolean~) plot::$6) goto plot::@1
   to:plot::@return
-plot::@return: from @15
+plot::@return: from @12
   return 
   to:@RETURN
-@END: from @20
+@END: from @BEGIN
 
-Simple Condition (boolean~) $2 if((byte~) $1!=(byte) 254) goto @3
-Simple Condition (boolean~) $4 if((byte~) $3!=(byte) 255) goto @4
-Simple Condition (boolean~) $5 if((byte) c#1!=(byte) 0) goto @2
+Simple Condition (boolean~) main::$2 if((byte~) main::$1!=(byte) 254) goto main::@3
+Simple Condition (boolean~) main::$4 if((byte~) main::$3!=(byte) 255) goto main::@4
+Simple Condition (boolean~) main::$5 if((byte) main::c#1!=(byte) 0) goto main::@2
 Simple Condition (boolean~) prepare::$0 if((byte) prepare::i#1!=(byte) 0) goto prepare::@1
 Simple Condition (boolean~) flip::$2 if((byte) flip::c#1!=(byte) 0) goto flip::@2
 Simple Condition (boolean~) flip::$3 if((byte) flip::r#1!=(byte) 0) goto flip::@1
@@ -2049,57 +2159,63 @@ Simple Condition (boolean~) plot::$6 if((byte) plot::y#1!=(byte) 0) goto plot::@
 Succesful SSA optimization Pass2ConditionalJumpSimplification
 CONTROL FLOW GRAPH
 @BEGIN: from
-  call prepare param-assignment
-  to:@18
-@18: from @BEGIN
-  to:@1
-@1: from @18 @20
-  (byte[256]) buffer1#20 ← phi( @18/(word) 4096 @20/(byte[256]) buffer1#10 )
-  (byte[256]) buffer2#13 ← phi( @18/(word) 4352 @20/(byte[256]) buffer2#15 )
-  (byte[1000]) SCREEN#9 ← phi( @18/(word) 1024 @20/(byte[1000]) SCREEN#1 )
-  (byte*) RASTER#5 ← phi( @18/(word) 53266 @20/(byte*) RASTER#10 )
-  to:@2
-@2: from @1 @6
-  (byte[256]) buffer2#12 ← phi( @1/(byte[256]) buffer2#13 @6/(byte[256]) buffer2#15 )
-  (byte[256]) buffer1#19 ← phi( @1/(byte[256]) buffer1#20 @6/(byte[256]) buffer1#10 )
-  (byte[1000]) SCREEN#8 ← phi( @1/(byte[1000]) SCREEN#9 @6/(byte[1000]) SCREEN#1 )
-  (byte) c#6 ← phi( @1/(byte) 25 @6/(byte) c#1 )
-  (byte*) RASTER#3 ← phi( @1/(byte*) RASTER#5 @6/(byte*) RASTER#10 )
-  to:@3
-@3: from @2 @3
-  (byte[256]) buffer1#17 ← phi( @2/(byte[256]) buffer1#19 )
-  (byte[256]) buffer2#10 ← phi( @2/(byte[256]) buffer2#12 )
-  (byte[1000]) SCREEN#6 ← phi( @2/(byte[1000]) SCREEN#8 )
-  (byte) c#4 ← phi( @2/(byte) c#6 )
-  (byte*) RASTER#1 ← phi( @2/(byte*) RASTER#3 )
-  (byte~) $1 ← * (byte*) RASTER#1
-  if((byte~) $1!=(byte) 254) goto @3
-  to:@5
-@5: from @3
-  to:@4
-@4: from @4 @5
-  (byte[256]) buffer1#10 ← phi( @5/(byte[256]) buffer1#17 )
-  (byte[256]) buffer2#15 ← phi( @5/(byte[256]) buffer2#10 )
-  (byte[1000]) SCREEN#1 ← phi( @5/(byte[1000]) SCREEN#6 )
-  (byte) c#2 ← phi( @5/(byte) c#4 )
-  (byte*) RASTER#10 ← phi( @5/(byte*) RASTER#1 )
-  (byte~) $3 ← * (byte*) RASTER#10
-  if((byte~) $3!=(byte) 255) goto @4
-  to:@6
-@6: from @4
-  (byte) c#1 ← -- (byte) c#2
-  if((byte) c#1!=(byte) 0) goto @2
-  to:@7
-@7: from @6
-  call flip param-assignment
-  to:@19
-@19: from @7
-  call plot param-assignment
-  to:@20
-@20: from @19
-  if(true) goto @1
+  call main param-assignment
   to:@END
-prepare: from @BEGIN
+main: from @BEGIN
+  call prepare param-assignment
+  to:@16
+@16: from main
+  to:main::@1
+main::@1: from @16 @18
+  (byte[256]) buffer1#21 ← phi( @16/(word) 4096 @18/(byte[256]) buffer1#11 )
+  (byte[256]) buffer2#13 ← phi( @16/(word) 4352 @18/(byte[256]) buffer2#15 )
+  (byte[1000]) SCREEN#9 ← phi( @16/(word) 1024 @18/(byte[1000]) SCREEN#1 )
+  (byte*) RASTER#6 ← phi( @16/(word) 53266 @18/(byte*) RASTER#10 )
+  to:main::@2
+main::@2: from @2 main::@1
+  (byte[256]) buffer2#12 ← phi( @2/(byte[256]) buffer2#15 main::@1/(byte[256]) buffer2#13 )
+  (byte[256]) buffer1#20 ← phi( @2/(byte[256]) buffer1#11 main::@1/(byte[256]) buffer1#21 )
+  (byte[1000]) SCREEN#8 ← phi( @2/(byte[1000]) SCREEN#1 main::@1/(byte[1000]) SCREEN#9 )
+  (byte) main::c#6 ← phi( @2/(byte) main::c#1 main::@1/(byte) 25 )
+  (byte*) RASTER#3 ← phi( @2/(byte*) RASTER#10 main::@1/(byte*) RASTER#6 )
+  to:main::@3
+main::@3: from main::@2 main::@3
+  (byte[256]) buffer1#18 ← phi( main::@2/(byte[256]) buffer1#20 )
+  (byte[256]) buffer2#10 ← phi( main::@2/(byte[256]) buffer2#12 )
+  (byte[1000]) SCREEN#6 ← phi( main::@2/(byte[1000]) SCREEN#8 )
+  (byte) main::c#4 ← phi( main::@2/(byte) main::c#6 )
+  (byte*) RASTER#1 ← phi( main::@2/(byte*) RASTER#3 )
+  (byte~) main::$1 ← * (byte*) RASTER#1
+  if((byte~) main::$1!=(byte) 254) goto main::@3
+  to:@1
+@1: from main::@3
+  to:main::@4
+main::@4: from @1 main::@4
+  (byte[256]) buffer1#11 ← phi( @1/(byte[256]) buffer1#18 )
+  (byte[256]) buffer2#15 ← phi( @1/(byte[256]) buffer2#10 )
+  (byte[1000]) SCREEN#1 ← phi( @1/(byte[1000]) SCREEN#6 )
+  (byte) main::c#2 ← phi( @1/(byte) main::c#4 )
+  (byte*) RASTER#10 ← phi( @1/(byte*) RASTER#1 )
+  (byte~) main::$3 ← * (byte*) RASTER#10
+  if((byte~) main::$3!=(byte) 255) goto main::@4
+  to:@2
+@2: from main::@4
+  (byte) main::c#1 ← -- (byte) main::c#2
+  if((byte) main::c#1!=(byte) 0) goto main::@2
+  to:@3
+@3: from @2
+  call flip param-assignment
+  to:@17
+@17: from @3
+  call plot param-assignment
+  to:@18
+@18: from @17
+  if(true) goto main::@1
+  to:main::@return
+main::@return: from @18
+  return 
+  to:@RETURN
+prepare: from main
   to:prepare::@1
 prepare::@1: from prepare prepare::@1
   (byte[256]) buffer1#1 ← phi( prepare/(word) 4096 )
@@ -2111,14 +2227,14 @@ prepare::@1: from prepare prepare::@1
 prepare::@return: from prepare::@1
   return 
   to:@RETURN
-flip: from @7
+flip: from @3
   to:flip::@1
-flip::@1: from @11 flip
-  (byte) flip::r#4 ← phi( @11/(byte) flip::r#1 flip/(byte) 16 )
-  (byte[256]) buffer1#6 ← phi( @11/(byte[256]) buffer1#2 flip/(byte[256]) buffer1#10 )
-  (byte) flip::srcIdx#3 ← phi( @11/(byte) flip::srcIdx#1 flip/(byte) 0 )
-  (byte[256]) buffer2#3 ← phi( @11/(byte[256]) buffer2#1 flip/(byte[256]) buffer2#15 )
-  (byte) flip::dstIdx#5 ← phi( @11/(byte) flip::dstIdx#2 flip/(byte) 15 )
+flip::@1: from @8 flip
+  (byte) flip::r#4 ← phi( @8/(byte) flip::r#1 flip/(byte) 16 )
+  (byte[256]) buffer1#6 ← phi( @8/(byte[256]) buffer1#10 flip/(byte[256]) buffer1#11 )
+  (byte) flip::srcIdx#3 ← phi( @8/(byte) flip::srcIdx#1 flip/(byte) 0 )
+  (byte[256]) buffer2#3 ← phi( @8/(byte[256]) buffer2#1 flip/(byte[256]) buffer2#15 )
+  (byte) flip::dstIdx#5 ← phi( @8/(byte) flip::dstIdx#2 flip/(byte) 15 )
   to:flip::@2
 flip::@2: from flip::@1 flip::@2
   (byte) flip::r#2 ← phi( flip::@1/(byte) flip::r#4 )
@@ -2126,25 +2242,25 @@ flip::@2: from flip::@1 flip::@2
   (byte) flip::dstIdx#3 ← phi( flip::@1/(byte) flip::dstIdx#5 flip::@2/(byte) flip::dstIdx#1 )
   (byte[256]) buffer2#1 ← phi( flip::@1/(byte[256]) buffer2#3 )
   (byte) flip::srcIdx#2 ← phi( flip::@1/(byte) flip::srcIdx#3 flip::@2/(byte) flip::srcIdx#1 )
-  (byte[256]) buffer1#2 ← phi( flip::@1/(byte[256]) buffer1#6 )
-  (byte~) flip::$0 ← (byte[256]) buffer1#2 *idx (byte) flip::srcIdx#2
+  (byte[256]) buffer1#10 ← phi( flip::@1/(byte[256]) buffer1#6 )
+  (byte~) flip::$0 ← (byte[256]) buffer1#10 *idx (byte) flip::srcIdx#2
   *((byte[256]) buffer2#1 + (byte) flip::dstIdx#3) ← (byte~) flip::$0
   (byte) flip::srcIdx#1 ← ++ (byte) flip::srcIdx#2
   (byte) flip::dstIdx#1 ← (byte) flip::dstIdx#3 + (byte) 16
   (byte) flip::c#1 ← -- (byte) flip::c#2
   if((byte) flip::c#1!=(byte) 0) goto flip::@2
-  to:@11
-@11: from flip::@2
+  to:@8
+@8: from flip::@2
   (byte) flip::dstIdx#2 ← -- (byte) flip::dstIdx#1
   (byte) flip::r#1 ← -- (byte) flip::r#2
   if((byte) flip::r#1!=(byte) 0) goto flip::@1
-  to:@12
-@12: from @11
+  to:@9
+@9: from @8
   to:flip::@3
-flip::@3: from @12 flip::@3
-  (byte[256]) buffer1#3 ← phi( @12/(byte[256]) buffer1#2 )
-  (byte) flip::i#2 ← phi( @12/(byte) 0 flip::@3/(byte) flip::i#1 )
-  (byte[256]) buffer2#2 ← phi( @12/(byte[256]) buffer2#1 )
+flip::@3: from @9 flip::@3
+  (byte[256]) buffer1#3 ← phi( @9/(byte[256]) buffer1#10 )
+  (byte) flip::i#2 ← phi( @9/(byte) 0 flip::@3/(byte) flip::i#1 )
+  (byte[256]) buffer2#2 ← phi( @9/(byte[256]) buffer2#1 )
   (byte~) flip::$4 ← (byte[256]) buffer2#2 *idx (byte) flip::i#2
   *((byte[256]) buffer1#3 + (byte) flip::i#2) ← (byte~) flip::$4
   (byte) flip::i#1 ← ++ (byte) flip::i#2
@@ -2153,90 +2269,96 @@ flip::@3: from @12 flip::@3
 flip::@return: from flip::@3
   return 
   to:@RETURN
-plot: from @19
+plot: from @17
   (byte*) plot::line#0 ← (byte[1000]) SCREEN#1 + (byte) 212
   to:plot::@1
-plot::@1: from @15 plot
-  (byte) plot::y#4 ← phi( @15/(byte) plot::y#1 plot/(byte) 16 )
-  (byte[256]) buffer1#8 ← phi( @15/(byte[256]) buffer1#11 plot/(byte[256]) buffer1#10 )
-  (byte) plot::i#3 ← phi( @15/(byte) plot::i#1 plot/(byte) 0 )
-  (byte*) plot::line#4 ← phi( @15/(byte*) plot::line#1 plot/(byte*) plot::line#0 )
+plot::@1: from @12 plot
+  (byte) plot::y#4 ← phi( @12/(byte) plot::y#1 plot/(byte) 16 )
+  (byte[256]) buffer1#8 ← phi( @12/(byte[256]) buffer1#12 plot/(byte[256]) buffer1#11 )
+  (byte) plot::i#3 ← phi( @12/(byte) plot::i#1 plot/(byte) 0 )
+  (byte*) plot::line#4 ← phi( @12/(byte*) plot::line#1 plot/(byte*) plot::line#0 )
   to:plot::@2
 plot::@2: from plot::@1 plot::@2
   (byte) plot::y#2 ← phi( plot::@1/(byte) plot::y#4 )
   (byte) plot::x#2 ← phi( plot::@1/(byte) 0 plot::@2/(byte) plot::x#1 )
   (byte*) plot::line#2 ← phi( plot::@1/(byte*) plot::line#4 )
   (byte) plot::i#2 ← phi( plot::@1/(byte) plot::i#3 plot::@2/(byte) plot::i#1 )
-  (byte[256]) buffer1#11 ← phi( plot::@1/(byte[256]) buffer1#8 )
-  (byte~) plot::$3 ← (byte[256]) buffer1#11 *idx (byte) plot::i#2
+  (byte[256]) buffer1#12 ← phi( plot::@1/(byte[256]) buffer1#8 )
+  (byte~) plot::$3 ← (byte[256]) buffer1#12 *idx (byte) plot::i#2
   *((byte*) plot::line#2 + (byte) plot::x#2) ← (byte~) plot::$3
   (byte) plot::i#1 ← ++ (byte) plot::i#2
   (byte) plot::x#1 ← ++ (byte) plot::x#2
   if((byte) plot::x#1<(byte) 16) goto plot::@2
-  to:@15
-@15: from plot::@2
+  to:@12
+@12: from plot::@2
   (byte*) plot::line#1 ← (byte*) plot::line#2 + (byte) 40
   (byte) plot::y#1 ← -- (byte) plot::y#2
   if((byte) plot::y#1!=(byte) 0) goto plot::@1
   to:plot::@return
-plot::@return: from @15
+plot::@return: from @12
   return 
   to:@RETURN
-@END: from @20
+@END: from @BEGIN
 
-Culled Empty Block (label) @18
-Culled Empty Block (label) @5
-Culled Empty Block (label) @12
+Culled Empty Block (label) @16
+Culled Empty Block (label) @1
+Culled Empty Block (label) @9
 Succesful SSA optimization Pass2CullEmptyBlocks
 CONTROL FLOW GRAPH
 @BEGIN: from
-  call prepare param-assignment
-  to:@1
-@1: from @20 @BEGIN
-  (byte[256]) buffer1#20 ← phi( @BEGIN/(word) 4096 @20/(byte[256]) buffer1#10 )
-  (byte[256]) buffer2#13 ← phi( @BEGIN/(word) 4352 @20/(byte[256]) buffer2#15 )
-  (byte[1000]) SCREEN#9 ← phi( @BEGIN/(word) 1024 @20/(byte[1000]) SCREEN#1 )
-  (byte*) RASTER#5 ← phi( @BEGIN/(word) 53266 @20/(byte*) RASTER#10 )
-  to:@2
-@2: from @1 @6
-  (byte[256]) buffer2#12 ← phi( @1/(byte[256]) buffer2#13 @6/(byte[256]) buffer2#15 )
-  (byte[256]) buffer1#19 ← phi( @1/(byte[256]) buffer1#20 @6/(byte[256]) buffer1#10 )
-  (byte[1000]) SCREEN#8 ← phi( @1/(byte[1000]) SCREEN#9 @6/(byte[1000]) SCREEN#1 )
-  (byte) c#6 ← phi( @1/(byte) 25 @6/(byte) c#1 )
-  (byte*) RASTER#3 ← phi( @1/(byte*) RASTER#5 @6/(byte*) RASTER#10 )
-  to:@3
-@3: from @2 @3
-  (byte[256]) buffer1#17 ← phi( @2/(byte[256]) buffer1#19 )
-  (byte[256]) buffer2#10 ← phi( @2/(byte[256]) buffer2#12 )
-  (byte[1000]) SCREEN#6 ← phi( @2/(byte[1000]) SCREEN#8 )
-  (byte) c#4 ← phi( @2/(byte) c#6 )
-  (byte*) RASTER#1 ← phi( @2/(byte*) RASTER#3 )
-  (byte~) $1 ← * (byte*) RASTER#1
-  if((byte~) $1!=(byte) 254) goto @3
-  to:@4
-@4: from @3 @4
-  (byte[256]) buffer1#10 ← phi( @3/(byte[256]) buffer1#17 )
-  (byte[256]) buffer2#15 ← phi( @3/(byte[256]) buffer2#10 )
-  (byte[1000]) SCREEN#1 ← phi( @3/(byte[1000]) SCREEN#6 )
-  (byte) c#2 ← phi( @3/(byte) c#4 )
-  (byte*) RASTER#10 ← phi( @3/(byte*) RASTER#1 )
-  (byte~) $3 ← * (byte*) RASTER#10
-  if((byte~) $3!=(byte) 255) goto @4
-  to:@6
-@6: from @4
-  (byte) c#1 ← -- (byte) c#2
-  if((byte) c#1!=(byte) 0) goto @2
-  to:@7
-@7: from @6
-  call flip param-assignment
-  to:@19
-@19: from @7
-  call plot param-assignment
-  to:@20
-@20: from @19
-  if(true) goto @1
+  call main param-assignment
   to:@END
-prepare: from @BEGIN
+main: from @BEGIN
+  call prepare param-assignment
+  to:main::@1
+main::@1: from @18 main
+  (byte[256]) buffer1#21 ← phi( main/(word) 4096 @18/(byte[256]) buffer1#11 )
+  (byte[256]) buffer2#13 ← phi( main/(word) 4352 @18/(byte[256]) buffer2#15 )
+  (byte[1000]) SCREEN#9 ← phi( main/(word) 1024 @18/(byte[1000]) SCREEN#1 )
+  (byte*) RASTER#6 ← phi( main/(word) 53266 @18/(byte*) RASTER#10 )
+  to:main::@2
+main::@2: from @2 main::@1
+  (byte[256]) buffer2#12 ← phi( @2/(byte[256]) buffer2#15 main::@1/(byte[256]) buffer2#13 )
+  (byte[256]) buffer1#20 ← phi( @2/(byte[256]) buffer1#11 main::@1/(byte[256]) buffer1#21 )
+  (byte[1000]) SCREEN#8 ← phi( @2/(byte[1000]) SCREEN#1 main::@1/(byte[1000]) SCREEN#9 )
+  (byte) main::c#6 ← phi( @2/(byte) main::c#1 main::@1/(byte) 25 )
+  (byte*) RASTER#3 ← phi( @2/(byte*) RASTER#10 main::@1/(byte*) RASTER#6 )
+  to:main::@3
+main::@3: from main::@2 main::@3
+  (byte[256]) buffer1#18 ← phi( main::@2/(byte[256]) buffer1#20 )
+  (byte[256]) buffer2#10 ← phi( main::@2/(byte[256]) buffer2#12 )
+  (byte[1000]) SCREEN#6 ← phi( main::@2/(byte[1000]) SCREEN#8 )
+  (byte) main::c#4 ← phi( main::@2/(byte) main::c#6 )
+  (byte*) RASTER#1 ← phi( main::@2/(byte*) RASTER#3 )
+  (byte~) main::$1 ← * (byte*) RASTER#1
+  if((byte~) main::$1!=(byte) 254) goto main::@3
+  to:main::@4
+main::@4: from main::@3 main::@4
+  (byte[256]) buffer1#11 ← phi( main::@3/(byte[256]) buffer1#18 )
+  (byte[256]) buffer2#15 ← phi( main::@3/(byte[256]) buffer2#10 )
+  (byte[1000]) SCREEN#1 ← phi( main::@3/(byte[1000]) SCREEN#6 )
+  (byte) main::c#2 ← phi( main::@3/(byte) main::c#4 )
+  (byte*) RASTER#10 ← phi( main::@3/(byte*) RASTER#1 )
+  (byte~) main::$3 ← * (byte*) RASTER#10
+  if((byte~) main::$3!=(byte) 255) goto main::@4
+  to:@2
+@2: from main::@4
+  (byte) main::c#1 ← -- (byte) main::c#2
+  if((byte) main::c#1!=(byte) 0) goto main::@2
+  to:@3
+@3: from @2
+  call flip param-assignment
+  to:@17
+@17: from @3
+  call plot param-assignment
+  to:@18
+@18: from @17
+  if(true) goto main::@1
+  to:main::@return
+main::@return: from @18
+  return 
+  to:@RETURN
+prepare: from main
   to:prepare::@1
 prepare::@1: from prepare prepare::@1
   (byte[256]) buffer1#1 ← phi( prepare/(word) 4096 )
@@ -2248,14 +2370,14 @@ prepare::@1: from prepare prepare::@1
 prepare::@return: from prepare::@1
   return 
   to:@RETURN
-flip: from @7
+flip: from @3
   to:flip::@1
-flip::@1: from @11 flip
-  (byte) flip::r#4 ← phi( @11/(byte) flip::r#1 flip/(byte) 16 )
-  (byte[256]) buffer1#6 ← phi( @11/(byte[256]) buffer1#2 flip/(byte[256]) buffer1#10 )
-  (byte) flip::srcIdx#3 ← phi( @11/(byte) flip::srcIdx#1 flip/(byte) 0 )
-  (byte[256]) buffer2#3 ← phi( @11/(byte[256]) buffer2#1 flip/(byte[256]) buffer2#15 )
-  (byte) flip::dstIdx#5 ← phi( @11/(byte) flip::dstIdx#2 flip/(byte) 15 )
+flip::@1: from @8 flip
+  (byte) flip::r#4 ← phi( @8/(byte) flip::r#1 flip/(byte) 16 )
+  (byte[256]) buffer1#6 ← phi( @8/(byte[256]) buffer1#10 flip/(byte[256]) buffer1#11 )
+  (byte) flip::srcIdx#3 ← phi( @8/(byte) flip::srcIdx#1 flip/(byte) 0 )
+  (byte[256]) buffer2#3 ← phi( @8/(byte[256]) buffer2#1 flip/(byte[256]) buffer2#15 )
+  (byte) flip::dstIdx#5 ← phi( @8/(byte) flip::dstIdx#2 flip/(byte) 15 )
   to:flip::@2
 flip::@2: from flip::@1 flip::@2
   (byte) flip::r#2 ← phi( flip::@1/(byte) flip::r#4 )
@@ -2263,23 +2385,23 @@ flip::@2: from flip::@1 flip::@2
   (byte) flip::dstIdx#3 ← phi( flip::@1/(byte) flip::dstIdx#5 flip::@2/(byte) flip::dstIdx#1 )
   (byte[256]) buffer2#1 ← phi( flip::@1/(byte[256]) buffer2#3 )
   (byte) flip::srcIdx#2 ← phi( flip::@1/(byte) flip::srcIdx#3 flip::@2/(byte) flip::srcIdx#1 )
-  (byte[256]) buffer1#2 ← phi( flip::@1/(byte[256]) buffer1#6 )
-  (byte~) flip::$0 ← (byte[256]) buffer1#2 *idx (byte) flip::srcIdx#2
+  (byte[256]) buffer1#10 ← phi( flip::@1/(byte[256]) buffer1#6 )
+  (byte~) flip::$0 ← (byte[256]) buffer1#10 *idx (byte) flip::srcIdx#2
   *((byte[256]) buffer2#1 + (byte) flip::dstIdx#3) ← (byte~) flip::$0
   (byte) flip::srcIdx#1 ← ++ (byte) flip::srcIdx#2
   (byte) flip::dstIdx#1 ← (byte) flip::dstIdx#3 + (byte) 16
   (byte) flip::c#1 ← -- (byte) flip::c#2
   if((byte) flip::c#1!=(byte) 0) goto flip::@2
-  to:@11
-@11: from flip::@2
+  to:@8
+@8: from flip::@2
   (byte) flip::dstIdx#2 ← -- (byte) flip::dstIdx#1
   (byte) flip::r#1 ← -- (byte) flip::r#2
   if((byte) flip::r#1!=(byte) 0) goto flip::@1
   to:flip::@3
-flip::@3: from @11 flip::@3
-  (byte[256]) buffer1#3 ← phi( @11/(byte[256]) buffer1#2 )
-  (byte) flip::i#2 ← phi( @11/(byte) 0 flip::@3/(byte) flip::i#1 )
-  (byte[256]) buffer2#2 ← phi( @11/(byte[256]) buffer2#1 )
+flip::@3: from @8 flip::@3
+  (byte[256]) buffer1#3 ← phi( @8/(byte[256]) buffer1#10 )
+  (byte) flip::i#2 ← phi( @8/(byte) 0 flip::@3/(byte) flip::i#1 )
+  (byte[256]) buffer2#2 ← phi( @8/(byte[256]) buffer2#1 )
   (byte~) flip::$4 ← (byte[256]) buffer2#2 *idx (byte) flip::i#2
   *((byte[256]) buffer1#3 + (byte) flip::i#2) ← (byte~) flip::$4
   (byte) flip::i#1 ← ++ (byte) flip::i#2
@@ -2288,88 +2410,94 @@ flip::@3: from @11 flip::@3
 flip::@return: from flip::@3
   return 
   to:@RETURN
-plot: from @19
+plot: from @17
   (byte*) plot::line#0 ← (byte[1000]) SCREEN#1 + (byte) 212
   to:plot::@1
-plot::@1: from @15 plot
-  (byte) plot::y#4 ← phi( @15/(byte) plot::y#1 plot/(byte) 16 )
-  (byte[256]) buffer1#8 ← phi( @15/(byte[256]) buffer1#11 plot/(byte[256]) buffer1#10 )
-  (byte) plot::i#3 ← phi( @15/(byte) plot::i#1 plot/(byte) 0 )
-  (byte*) plot::line#4 ← phi( @15/(byte*) plot::line#1 plot/(byte*) plot::line#0 )
+plot::@1: from @12 plot
+  (byte) plot::y#4 ← phi( @12/(byte) plot::y#1 plot/(byte) 16 )
+  (byte[256]) buffer1#8 ← phi( @12/(byte[256]) buffer1#12 plot/(byte[256]) buffer1#11 )
+  (byte) plot::i#3 ← phi( @12/(byte) plot::i#1 plot/(byte) 0 )
+  (byte*) plot::line#4 ← phi( @12/(byte*) plot::line#1 plot/(byte*) plot::line#0 )
   to:plot::@2
 plot::@2: from plot::@1 plot::@2
   (byte) plot::y#2 ← phi( plot::@1/(byte) plot::y#4 )
   (byte) plot::x#2 ← phi( plot::@1/(byte) 0 plot::@2/(byte) plot::x#1 )
   (byte*) plot::line#2 ← phi( plot::@1/(byte*) plot::line#4 )
   (byte) plot::i#2 ← phi( plot::@1/(byte) plot::i#3 plot::@2/(byte) plot::i#1 )
-  (byte[256]) buffer1#11 ← phi( plot::@1/(byte[256]) buffer1#8 )
-  (byte~) plot::$3 ← (byte[256]) buffer1#11 *idx (byte) plot::i#2
+  (byte[256]) buffer1#12 ← phi( plot::@1/(byte[256]) buffer1#8 )
+  (byte~) plot::$3 ← (byte[256]) buffer1#12 *idx (byte) plot::i#2
   *((byte*) plot::line#2 + (byte) plot::x#2) ← (byte~) plot::$3
   (byte) plot::i#1 ← ++ (byte) plot::i#2
   (byte) plot::x#1 ← ++ (byte) plot::x#2
   if((byte) plot::x#1<(byte) 16) goto plot::@2
-  to:@15
-@15: from plot::@2
+  to:@12
+@12: from plot::@2
   (byte*) plot::line#1 ← (byte*) plot::line#2 + (byte) 40
   (byte) plot::y#1 ← -- (byte) plot::y#2
   if((byte) plot::y#1!=(byte) 0) goto plot::@1
   to:plot::@return
-plot::@return: from @15
+plot::@return: from @12
   return 
   to:@RETURN
-@END: from @20
+@END: from @BEGIN
 
 Constant (byte[256]) buffer1#1 (word) 4096
 Succesful SSA optimization Pass2ConstantPropagation
 CONTROL FLOW GRAPH
 @BEGIN: from
-  call prepare param-assignment
-  to:@1
-@1: from @20 @BEGIN
-  (byte[256]) buffer1#20 ← phi( @BEGIN/(word) 4096 @20/(byte[256]) buffer1#10 )
-  (byte[256]) buffer2#13 ← phi( @BEGIN/(word) 4352 @20/(byte[256]) buffer2#15 )
-  (byte[1000]) SCREEN#9 ← phi( @BEGIN/(word) 1024 @20/(byte[1000]) SCREEN#1 )
-  (byte*) RASTER#5 ← phi( @BEGIN/(word) 53266 @20/(byte*) RASTER#10 )
-  to:@2
-@2: from @1 @6
-  (byte[256]) buffer2#12 ← phi( @1/(byte[256]) buffer2#13 @6/(byte[256]) buffer2#15 )
-  (byte[256]) buffer1#19 ← phi( @1/(byte[256]) buffer1#20 @6/(byte[256]) buffer1#10 )
-  (byte[1000]) SCREEN#8 ← phi( @1/(byte[1000]) SCREEN#9 @6/(byte[1000]) SCREEN#1 )
-  (byte) c#6 ← phi( @1/(byte) 25 @6/(byte) c#1 )
-  (byte*) RASTER#3 ← phi( @1/(byte*) RASTER#5 @6/(byte*) RASTER#10 )
-  to:@3
-@3: from @2 @3
-  (byte[256]) buffer1#17 ← phi( @2/(byte[256]) buffer1#19 )
-  (byte[256]) buffer2#10 ← phi( @2/(byte[256]) buffer2#12 )
-  (byte[1000]) SCREEN#6 ← phi( @2/(byte[1000]) SCREEN#8 )
-  (byte) c#4 ← phi( @2/(byte) c#6 )
-  (byte*) RASTER#1 ← phi( @2/(byte*) RASTER#3 )
-  (byte~) $1 ← * (byte*) RASTER#1
-  if((byte~) $1!=(byte) 254) goto @3
-  to:@4
-@4: from @3 @4
-  (byte[256]) buffer1#10 ← phi( @3/(byte[256]) buffer1#17 )
-  (byte[256]) buffer2#15 ← phi( @3/(byte[256]) buffer2#10 )
-  (byte[1000]) SCREEN#1 ← phi( @3/(byte[1000]) SCREEN#6 )
-  (byte) c#2 ← phi( @3/(byte) c#4 )
-  (byte*) RASTER#10 ← phi( @3/(byte*) RASTER#1 )
-  (byte~) $3 ← * (byte*) RASTER#10
-  if((byte~) $3!=(byte) 255) goto @4
-  to:@6
-@6: from @4
-  (byte) c#1 ← -- (byte) c#2
-  if((byte) c#1!=(byte) 0) goto @2
-  to:@7
-@7: from @6
-  call flip param-assignment
-  to:@19
-@19: from @7
-  call plot param-assignment
-  to:@20
-@20: from @19
-  if(true) goto @1
+  call main param-assignment
   to:@END
-prepare: from @BEGIN
+main: from @BEGIN
+  call prepare param-assignment
+  to:main::@1
+main::@1: from @18 main
+  (byte[256]) buffer1#21 ← phi( main/(word) 4096 @18/(byte[256]) buffer1#11 )
+  (byte[256]) buffer2#13 ← phi( main/(word) 4352 @18/(byte[256]) buffer2#15 )
+  (byte[1000]) SCREEN#9 ← phi( main/(word) 1024 @18/(byte[1000]) SCREEN#1 )
+  (byte*) RASTER#6 ← phi( main/(word) 53266 @18/(byte*) RASTER#10 )
+  to:main::@2
+main::@2: from @2 main::@1
+  (byte[256]) buffer2#12 ← phi( @2/(byte[256]) buffer2#15 main::@1/(byte[256]) buffer2#13 )
+  (byte[256]) buffer1#20 ← phi( @2/(byte[256]) buffer1#11 main::@1/(byte[256]) buffer1#21 )
+  (byte[1000]) SCREEN#8 ← phi( @2/(byte[1000]) SCREEN#1 main::@1/(byte[1000]) SCREEN#9 )
+  (byte) main::c#6 ← phi( @2/(byte) main::c#1 main::@1/(byte) 25 )
+  (byte*) RASTER#3 ← phi( @2/(byte*) RASTER#10 main::@1/(byte*) RASTER#6 )
+  to:main::@3
+main::@3: from main::@2 main::@3
+  (byte[256]) buffer1#18 ← phi( main::@2/(byte[256]) buffer1#20 )
+  (byte[256]) buffer2#10 ← phi( main::@2/(byte[256]) buffer2#12 )
+  (byte[1000]) SCREEN#6 ← phi( main::@2/(byte[1000]) SCREEN#8 )
+  (byte) main::c#4 ← phi( main::@2/(byte) main::c#6 )
+  (byte*) RASTER#1 ← phi( main::@2/(byte*) RASTER#3 )
+  (byte~) main::$1 ← * (byte*) RASTER#1
+  if((byte~) main::$1!=(byte) 254) goto main::@3
+  to:main::@4
+main::@4: from main::@3 main::@4
+  (byte[256]) buffer1#11 ← phi( main::@3/(byte[256]) buffer1#18 )
+  (byte[256]) buffer2#15 ← phi( main::@3/(byte[256]) buffer2#10 )
+  (byte[1000]) SCREEN#1 ← phi( main::@3/(byte[1000]) SCREEN#6 )
+  (byte) main::c#2 ← phi( main::@3/(byte) main::c#4 )
+  (byte*) RASTER#10 ← phi( main::@3/(byte*) RASTER#1 )
+  (byte~) main::$3 ← * (byte*) RASTER#10
+  if((byte~) main::$3!=(byte) 255) goto main::@4
+  to:@2
+@2: from main::@4
+  (byte) main::c#1 ← -- (byte) main::c#2
+  if((byte) main::c#1!=(byte) 0) goto main::@2
+  to:@3
+@3: from @2
+  call flip param-assignment
+  to:@17
+@17: from @3
+  call plot param-assignment
+  to:@18
+@18: from @17
+  if(true) goto main::@1
+  to:main::@return
+main::@return: from @18
+  return 
+  to:@RETURN
+prepare: from main
   to:prepare::@1
 prepare::@1: from prepare prepare::@1
   (byte) prepare::i#2 ← phi( prepare/(byte) 0 prepare::@1/(byte) prepare::i#1 )
@@ -2380,14 +2508,14 @@ prepare::@1: from prepare prepare::@1
 prepare::@return: from prepare::@1
   return 
   to:@RETURN
-flip: from @7
+flip: from @3
   to:flip::@1
-flip::@1: from @11 flip
-  (byte) flip::r#4 ← phi( @11/(byte) flip::r#1 flip/(byte) 16 )
-  (byte[256]) buffer1#6 ← phi( @11/(byte[256]) buffer1#2 flip/(byte[256]) buffer1#10 )
-  (byte) flip::srcIdx#3 ← phi( @11/(byte) flip::srcIdx#1 flip/(byte) 0 )
-  (byte[256]) buffer2#3 ← phi( @11/(byte[256]) buffer2#1 flip/(byte[256]) buffer2#15 )
-  (byte) flip::dstIdx#5 ← phi( @11/(byte) flip::dstIdx#2 flip/(byte) 15 )
+flip::@1: from @8 flip
+  (byte) flip::r#4 ← phi( @8/(byte) flip::r#1 flip/(byte) 16 )
+  (byte[256]) buffer1#6 ← phi( @8/(byte[256]) buffer1#10 flip/(byte[256]) buffer1#11 )
+  (byte) flip::srcIdx#3 ← phi( @8/(byte) flip::srcIdx#1 flip/(byte) 0 )
+  (byte[256]) buffer2#3 ← phi( @8/(byte[256]) buffer2#1 flip/(byte[256]) buffer2#15 )
+  (byte) flip::dstIdx#5 ← phi( @8/(byte) flip::dstIdx#2 flip/(byte) 15 )
   to:flip::@2
 flip::@2: from flip::@1 flip::@2
   (byte) flip::r#2 ← phi( flip::@1/(byte) flip::r#4 )
@@ -2395,23 +2523,23 @@ flip::@2: from flip::@1 flip::@2
   (byte) flip::dstIdx#3 ← phi( flip::@1/(byte) flip::dstIdx#5 flip::@2/(byte) flip::dstIdx#1 )
   (byte[256]) buffer2#1 ← phi( flip::@1/(byte[256]) buffer2#3 )
   (byte) flip::srcIdx#2 ← phi( flip::@1/(byte) flip::srcIdx#3 flip::@2/(byte) flip::srcIdx#1 )
-  (byte[256]) buffer1#2 ← phi( flip::@1/(byte[256]) buffer1#6 )
-  (byte~) flip::$0 ← (byte[256]) buffer1#2 *idx (byte) flip::srcIdx#2
+  (byte[256]) buffer1#10 ← phi( flip::@1/(byte[256]) buffer1#6 )
+  (byte~) flip::$0 ← (byte[256]) buffer1#10 *idx (byte) flip::srcIdx#2
   *((byte[256]) buffer2#1 + (byte) flip::dstIdx#3) ← (byte~) flip::$0
   (byte) flip::srcIdx#1 ← ++ (byte) flip::srcIdx#2
   (byte) flip::dstIdx#1 ← (byte) flip::dstIdx#3 + (byte) 16
   (byte) flip::c#1 ← -- (byte) flip::c#2
   if((byte) flip::c#1!=(byte) 0) goto flip::@2
-  to:@11
-@11: from flip::@2
+  to:@8
+@8: from flip::@2
   (byte) flip::dstIdx#2 ← -- (byte) flip::dstIdx#1
   (byte) flip::r#1 ← -- (byte) flip::r#2
   if((byte) flip::r#1!=(byte) 0) goto flip::@1
   to:flip::@3
-flip::@3: from @11 flip::@3
-  (byte[256]) buffer1#3 ← phi( @11/(byte[256]) buffer1#2 )
-  (byte) flip::i#2 ← phi( @11/(byte) 0 flip::@3/(byte) flip::i#1 )
-  (byte[256]) buffer2#2 ← phi( @11/(byte[256]) buffer2#1 )
+flip::@3: from @8 flip::@3
+  (byte[256]) buffer1#3 ← phi( @8/(byte[256]) buffer1#10 )
+  (byte) flip::i#2 ← phi( @8/(byte) 0 flip::@3/(byte) flip::i#1 )
+  (byte[256]) buffer2#2 ← phi( @8/(byte[256]) buffer2#1 )
   (byte~) flip::$4 ← (byte[256]) buffer2#2 *idx (byte) flip::i#2
   *((byte[256]) buffer1#3 + (byte) flip::i#2) ← (byte~) flip::$4
   (byte) flip::i#1 ← ++ (byte) flip::i#2
@@ -2420,90 +2548,96 @@ flip::@3: from @11 flip::@3
 flip::@return: from flip::@3
   return 
   to:@RETURN
-plot: from @19
+plot: from @17
   (byte*) plot::line#0 ← (byte[1000]) SCREEN#1 + (byte) 212
   to:plot::@1
-plot::@1: from @15 plot
-  (byte) plot::y#4 ← phi( @15/(byte) plot::y#1 plot/(byte) 16 )
-  (byte[256]) buffer1#8 ← phi( @15/(byte[256]) buffer1#11 plot/(byte[256]) buffer1#10 )
-  (byte) plot::i#3 ← phi( @15/(byte) plot::i#1 plot/(byte) 0 )
-  (byte*) plot::line#4 ← phi( @15/(byte*) plot::line#1 plot/(byte*) plot::line#0 )
+plot::@1: from @12 plot
+  (byte) plot::y#4 ← phi( @12/(byte) plot::y#1 plot/(byte) 16 )
+  (byte[256]) buffer1#8 ← phi( @12/(byte[256]) buffer1#12 plot/(byte[256]) buffer1#11 )
+  (byte) plot::i#3 ← phi( @12/(byte) plot::i#1 plot/(byte) 0 )
+  (byte*) plot::line#4 ← phi( @12/(byte*) plot::line#1 plot/(byte*) plot::line#0 )
   to:plot::@2
 plot::@2: from plot::@1 plot::@2
   (byte) plot::y#2 ← phi( plot::@1/(byte) plot::y#4 )
   (byte) plot::x#2 ← phi( plot::@1/(byte) 0 plot::@2/(byte) plot::x#1 )
   (byte*) plot::line#2 ← phi( plot::@1/(byte*) plot::line#4 )
   (byte) plot::i#2 ← phi( plot::@1/(byte) plot::i#3 plot::@2/(byte) plot::i#1 )
-  (byte[256]) buffer1#11 ← phi( plot::@1/(byte[256]) buffer1#8 )
-  (byte~) plot::$3 ← (byte[256]) buffer1#11 *idx (byte) plot::i#2
+  (byte[256]) buffer1#12 ← phi( plot::@1/(byte[256]) buffer1#8 )
+  (byte~) plot::$3 ← (byte[256]) buffer1#12 *idx (byte) plot::i#2
   *((byte*) plot::line#2 + (byte) plot::x#2) ← (byte~) plot::$3
   (byte) plot::i#1 ← ++ (byte) plot::i#2
   (byte) plot::x#1 ← ++ (byte) plot::x#2
   if((byte) plot::x#1<(byte) 16) goto plot::@2
-  to:@15
-@15: from plot::@2
+  to:@12
+@12: from plot::@2
   (byte*) plot::line#1 ← (byte*) plot::line#2 + (byte) 40
   (byte) plot::y#1 ← -- (byte) plot::y#2
   if((byte) plot::y#1!=(byte) 0) goto plot::@1
   to:plot::@return
-plot::@return: from @15
+plot::@return: from @12
   return 
   to:@RETURN
-@END: from @20
+@END: from @BEGIN
 
 Multiple usages for variable. Not optimizing sub-constant (byte) prepare::i#2
 Multiple usages for variable. Not optimizing sub-constant (byte[1000]) SCREEN#1
-Alias (byte[256]) buffer1#10 = (byte[256]) buffer1#17 (byte[256]) buffer1#19 
+Alias (byte[256]) buffer1#11 = (byte[256]) buffer1#18 (byte[256]) buffer1#20 
 Alias (byte[256]) buffer2#10 = (byte[256]) buffer2#12 (byte[256]) buffer2#15 
 Alias (byte[1000]) SCREEN#1 = (byte[1000]) SCREEN#6 (byte[1000]) SCREEN#8 
-Alias (byte) c#2 = (byte) c#4 (byte) c#6 
+Alias (byte) main::c#2 = (byte) main::c#4 (byte) main::c#6 
 Alias (byte*) RASTER#1 = (byte*) RASTER#3 (byte*) RASTER#10 
 Alias (byte) flip::r#2 = (byte) flip::r#4 
 Alias (byte[256]) buffer2#1 = (byte[256]) buffer2#3 (byte[256]) buffer2#2 
-Alias (byte[256]) buffer1#2 = (byte[256]) buffer1#6 (byte[256]) buffer1#3 
+Alias (byte[256]) buffer1#10 = (byte[256]) buffer1#6 (byte[256]) buffer1#3 
 Alias (byte) plot::y#2 = (byte) plot::y#4 
 Alias (byte*) plot::line#2 = (byte*) plot::line#4 
-Alias (byte[256]) buffer1#11 = (byte[256]) buffer1#8 
+Alias (byte[256]) buffer1#12 = (byte[256]) buffer1#8 
 Succesful SSA optimization Pass2AliasElimination
 CONTROL FLOW GRAPH
 @BEGIN: from
-  call prepare param-assignment
-  to:@1
-@1: from @20 @BEGIN
-  (byte[256]) buffer1#20 ← phi( @BEGIN/(word) 4096 @20/(byte[256]) buffer1#10 )
-  (byte[256]) buffer2#13 ← phi( @BEGIN/(word) 4352 @20/(byte[256]) buffer2#10 )
-  (byte[1000]) SCREEN#9 ← phi( @BEGIN/(word) 1024 @20/(byte[1000]) SCREEN#1 )
-  (byte*) RASTER#5 ← phi( @BEGIN/(word) 53266 @20/(byte*) RASTER#1 )
-  to:@2
-@2: from @1 @6
-  (byte[256]) buffer2#10 ← phi( @1/(byte[256]) buffer2#13 @6/(byte[256]) buffer2#10 )
-  (byte[256]) buffer1#10 ← phi( @1/(byte[256]) buffer1#20 @6/(byte[256]) buffer1#10 )
-  (byte[1000]) SCREEN#1 ← phi( @1/(byte[1000]) SCREEN#9 @6/(byte[1000]) SCREEN#1 )
-  (byte) c#2 ← phi( @1/(byte) 25 @6/(byte) c#1 )
-  (byte*) RASTER#1 ← phi( @1/(byte*) RASTER#5 @6/(byte*) RASTER#1 )
-  to:@3
-@3: from @2 @3
-  (byte~) $1 ← * (byte*) RASTER#1
-  if((byte~) $1!=(byte) 254) goto @3
-  to:@4
-@4: from @3 @4
-  (byte~) $3 ← * (byte*) RASTER#1
-  if((byte~) $3!=(byte) 255) goto @4
-  to:@6
-@6: from @4
-  (byte) c#1 ← -- (byte) c#2
-  if((byte) c#1!=(byte) 0) goto @2
-  to:@7
-@7: from @6
-  call flip param-assignment
-  to:@19
-@19: from @7
-  call plot param-assignment
-  to:@20
-@20: from @19
-  if(true) goto @1
+  call main param-assignment
   to:@END
-prepare: from @BEGIN
+main: from @BEGIN
+  call prepare param-assignment
+  to:main::@1
+main::@1: from @18 main
+  (byte[256]) buffer1#21 ← phi( main/(word) 4096 @18/(byte[256]) buffer1#11 )
+  (byte[256]) buffer2#13 ← phi( main/(word) 4352 @18/(byte[256]) buffer2#10 )
+  (byte[1000]) SCREEN#9 ← phi( main/(word) 1024 @18/(byte[1000]) SCREEN#1 )
+  (byte*) RASTER#6 ← phi( main/(word) 53266 @18/(byte*) RASTER#1 )
+  to:main::@2
+main::@2: from @2 main::@1
+  (byte[256]) buffer2#10 ← phi( @2/(byte[256]) buffer2#10 main::@1/(byte[256]) buffer2#13 )
+  (byte[256]) buffer1#11 ← phi( @2/(byte[256]) buffer1#11 main::@1/(byte[256]) buffer1#21 )
+  (byte[1000]) SCREEN#1 ← phi( @2/(byte[1000]) SCREEN#1 main::@1/(byte[1000]) SCREEN#9 )
+  (byte) main::c#2 ← phi( @2/(byte) main::c#1 main::@1/(byte) 25 )
+  (byte*) RASTER#1 ← phi( @2/(byte*) RASTER#1 main::@1/(byte*) RASTER#6 )
+  to:main::@3
+main::@3: from main::@2 main::@3
+  (byte~) main::$1 ← * (byte*) RASTER#1
+  if((byte~) main::$1!=(byte) 254) goto main::@3
+  to:main::@4
+main::@4: from main::@3 main::@4
+  (byte~) main::$3 ← * (byte*) RASTER#1
+  if((byte~) main::$3!=(byte) 255) goto main::@4
+  to:@2
+@2: from main::@4
+  (byte) main::c#1 ← -- (byte) main::c#2
+  if((byte) main::c#1!=(byte) 0) goto main::@2
+  to:@3
+@3: from @2
+  call flip param-assignment
+  to:@17
+@17: from @3
+  call plot param-assignment
+  to:@18
+@18: from @17
+  if(true) goto main::@1
+  to:main::@return
+main::@return: from @18
+  return 
+  to:@RETURN
+prepare: from main
   to:prepare::@1
 prepare::@1: from prepare prepare::@1
   (byte) prepare::i#2 ← phi( prepare/(byte) 0 prepare::@1/(byte) prepare::i#1 )
@@ -2514,116 +2648,122 @@ prepare::@1: from prepare prepare::@1
 prepare::@return: from prepare::@1
   return 
   to:@RETURN
-flip: from @7
+flip: from @3
   to:flip::@1
-flip::@1: from @11 flip
-  (byte) flip::r#2 ← phi( @11/(byte) flip::r#1 flip/(byte) 16 )
-  (byte[256]) buffer1#2 ← phi( @11/(byte[256]) buffer1#2 flip/(byte[256]) buffer1#10 )
-  (byte) flip::srcIdx#3 ← phi( @11/(byte) flip::srcIdx#1 flip/(byte) 0 )
-  (byte[256]) buffer2#1 ← phi( @11/(byte[256]) buffer2#1 flip/(byte[256]) buffer2#10 )
-  (byte) flip::dstIdx#5 ← phi( @11/(byte) flip::dstIdx#2 flip/(byte) 15 )
+flip::@1: from @8 flip
+  (byte) flip::r#2 ← phi( @8/(byte) flip::r#1 flip/(byte) 16 )
+  (byte[256]) buffer1#10 ← phi( @8/(byte[256]) buffer1#10 flip/(byte[256]) buffer1#11 )
+  (byte) flip::srcIdx#3 ← phi( @8/(byte) flip::srcIdx#1 flip/(byte) 0 )
+  (byte[256]) buffer2#1 ← phi( @8/(byte[256]) buffer2#1 flip/(byte[256]) buffer2#10 )
+  (byte) flip::dstIdx#5 ← phi( @8/(byte) flip::dstIdx#2 flip/(byte) 15 )
   to:flip::@2
 flip::@2: from flip::@1 flip::@2
   (byte) flip::c#2 ← phi( flip::@1/(byte) 16 flip::@2/(byte) flip::c#1 )
   (byte) flip::dstIdx#3 ← phi( flip::@1/(byte) flip::dstIdx#5 flip::@2/(byte) flip::dstIdx#1 )
   (byte) flip::srcIdx#2 ← phi( flip::@1/(byte) flip::srcIdx#3 flip::@2/(byte) flip::srcIdx#1 )
-  (byte~) flip::$0 ← (byte[256]) buffer1#2 *idx (byte) flip::srcIdx#2
+  (byte~) flip::$0 ← (byte[256]) buffer1#10 *idx (byte) flip::srcIdx#2
   *((byte[256]) buffer2#1 + (byte) flip::dstIdx#3) ← (byte~) flip::$0
   (byte) flip::srcIdx#1 ← ++ (byte) flip::srcIdx#2
   (byte) flip::dstIdx#1 ← (byte) flip::dstIdx#3 + (byte) 16
   (byte) flip::c#1 ← -- (byte) flip::c#2
   if((byte) flip::c#1!=(byte) 0) goto flip::@2
-  to:@11
-@11: from flip::@2
+  to:@8
+@8: from flip::@2
   (byte) flip::dstIdx#2 ← -- (byte) flip::dstIdx#1
   (byte) flip::r#1 ← -- (byte) flip::r#2
   if((byte) flip::r#1!=(byte) 0) goto flip::@1
   to:flip::@3
-flip::@3: from @11 flip::@3
-  (byte) flip::i#2 ← phi( @11/(byte) 0 flip::@3/(byte) flip::i#1 )
+flip::@3: from @8 flip::@3
+  (byte) flip::i#2 ← phi( @8/(byte) 0 flip::@3/(byte) flip::i#1 )
   (byte~) flip::$4 ← (byte[256]) buffer2#1 *idx (byte) flip::i#2
-  *((byte[256]) buffer1#2 + (byte) flip::i#2) ← (byte~) flip::$4
+  *((byte[256]) buffer1#10 + (byte) flip::i#2) ← (byte~) flip::$4
   (byte) flip::i#1 ← ++ (byte) flip::i#2
   if((byte) flip::i#1!=(byte) 0) goto flip::@3
   to:flip::@return
 flip::@return: from flip::@3
   return 
   to:@RETURN
-plot: from @19
+plot: from @17
   (byte*) plot::line#0 ← (byte[1000]) SCREEN#1 + (byte) 212
   to:plot::@1
-plot::@1: from @15 plot
-  (byte) plot::y#2 ← phi( @15/(byte) plot::y#1 plot/(byte) 16 )
-  (byte[256]) buffer1#11 ← phi( @15/(byte[256]) buffer1#11 plot/(byte[256]) buffer1#10 )
-  (byte) plot::i#3 ← phi( @15/(byte) plot::i#1 plot/(byte) 0 )
-  (byte*) plot::line#2 ← phi( @15/(byte*) plot::line#1 plot/(byte*) plot::line#0 )
+plot::@1: from @12 plot
+  (byte) plot::y#2 ← phi( @12/(byte) plot::y#1 plot/(byte) 16 )
+  (byte[256]) buffer1#12 ← phi( @12/(byte[256]) buffer1#12 plot/(byte[256]) buffer1#11 )
+  (byte) plot::i#3 ← phi( @12/(byte) plot::i#1 plot/(byte) 0 )
+  (byte*) plot::line#2 ← phi( @12/(byte*) plot::line#1 plot/(byte*) plot::line#0 )
   to:plot::@2
 plot::@2: from plot::@1 plot::@2
   (byte) plot::x#2 ← phi( plot::@1/(byte) 0 plot::@2/(byte) plot::x#1 )
   (byte) plot::i#2 ← phi( plot::@1/(byte) plot::i#3 plot::@2/(byte) plot::i#1 )
-  (byte~) plot::$3 ← (byte[256]) buffer1#11 *idx (byte) plot::i#2
+  (byte~) plot::$3 ← (byte[256]) buffer1#12 *idx (byte) plot::i#2
   *((byte*) plot::line#2 + (byte) plot::x#2) ← (byte~) plot::$3
   (byte) plot::i#1 ← ++ (byte) plot::i#2
   (byte) plot::x#1 ← ++ (byte) plot::x#2
   if((byte) plot::x#1<(byte) 16) goto plot::@2
-  to:@15
-@15: from plot::@2
+  to:@12
+@12: from plot::@2
   (byte*) plot::line#1 ← (byte*) plot::line#2 + (byte) 40
   (byte) plot::y#1 ← -- (byte) plot::y#2
   if((byte) plot::y#1!=(byte) 0) goto plot::@1
   to:plot::@return
-plot::@return: from @15
+plot::@return: from @12
   return 
   to:@RETURN
-@END: from @20
+@END: from @BEGIN
 
 Self Phi Eliminated (byte[256]) buffer2#10
-Self Phi Eliminated (byte[256]) buffer1#10
+Self Phi Eliminated (byte[256]) buffer1#11
 Self Phi Eliminated (byte[1000]) SCREEN#1
 Self Phi Eliminated (byte*) RASTER#1
-Self Phi Eliminated (byte[256]) buffer1#2
+Self Phi Eliminated (byte[256]) buffer1#10
 Self Phi Eliminated (byte[256]) buffer2#1
-Self Phi Eliminated (byte[256]) buffer1#11
+Self Phi Eliminated (byte[256]) buffer1#12
 Succesful SSA optimization Pass2SelfPhiElimination
 CONTROL FLOW GRAPH
 @BEGIN: from
-  call prepare param-assignment
-  to:@1
-@1: from @20 @BEGIN
-  (byte[256]) buffer1#20 ← phi( @BEGIN/(word) 4096 @20/(byte[256]) buffer1#10 )
-  (byte[256]) buffer2#13 ← phi( @BEGIN/(word) 4352 @20/(byte[256]) buffer2#10 )
-  (byte[1000]) SCREEN#9 ← phi( @BEGIN/(word) 1024 @20/(byte[1000]) SCREEN#1 )
-  (byte*) RASTER#5 ← phi( @BEGIN/(word) 53266 @20/(byte*) RASTER#1 )
-  to:@2
-@2: from @1 @6
-  (byte[256]) buffer2#10 ← phi( @1/(byte[256]) buffer2#13 )
-  (byte[256]) buffer1#10 ← phi( @1/(byte[256]) buffer1#20 )
-  (byte[1000]) SCREEN#1 ← phi( @1/(byte[1000]) SCREEN#9 )
-  (byte) c#2 ← phi( @1/(byte) 25 @6/(byte) c#1 )
-  (byte*) RASTER#1 ← phi( @1/(byte*) RASTER#5 )
-  to:@3
-@3: from @2 @3
-  (byte~) $1 ← * (byte*) RASTER#1
-  if((byte~) $1!=(byte) 254) goto @3
-  to:@4
-@4: from @3 @4
-  (byte~) $3 ← * (byte*) RASTER#1
-  if((byte~) $3!=(byte) 255) goto @4
-  to:@6
-@6: from @4
-  (byte) c#1 ← -- (byte) c#2
-  if((byte) c#1!=(byte) 0) goto @2
-  to:@7
-@7: from @6
-  call flip param-assignment
-  to:@19
-@19: from @7
-  call plot param-assignment
-  to:@20
-@20: from @19
-  if(true) goto @1
+  call main param-assignment
   to:@END
-prepare: from @BEGIN
+main: from @BEGIN
+  call prepare param-assignment
+  to:main::@1
+main::@1: from @18 main
+  (byte[256]) buffer1#21 ← phi( main/(word) 4096 @18/(byte[256]) buffer1#11 )
+  (byte[256]) buffer2#13 ← phi( main/(word) 4352 @18/(byte[256]) buffer2#10 )
+  (byte[1000]) SCREEN#9 ← phi( main/(word) 1024 @18/(byte[1000]) SCREEN#1 )
+  (byte*) RASTER#6 ← phi( main/(word) 53266 @18/(byte*) RASTER#1 )
+  to:main::@2
+main::@2: from @2 main::@1
+  (byte[256]) buffer2#10 ← phi( main::@1/(byte[256]) buffer2#13 )
+  (byte[256]) buffer1#11 ← phi( main::@1/(byte[256]) buffer1#21 )
+  (byte[1000]) SCREEN#1 ← phi( main::@1/(byte[1000]) SCREEN#9 )
+  (byte) main::c#2 ← phi( @2/(byte) main::c#1 main::@1/(byte) 25 )
+  (byte*) RASTER#1 ← phi( main::@1/(byte*) RASTER#6 )
+  to:main::@3
+main::@3: from main::@2 main::@3
+  (byte~) main::$1 ← * (byte*) RASTER#1
+  if((byte~) main::$1!=(byte) 254) goto main::@3
+  to:main::@4
+main::@4: from main::@3 main::@4
+  (byte~) main::$3 ← * (byte*) RASTER#1
+  if((byte~) main::$3!=(byte) 255) goto main::@4
+  to:@2
+@2: from main::@4
+  (byte) main::c#1 ← -- (byte) main::c#2
+  if((byte) main::c#1!=(byte) 0) goto main::@2
+  to:@3
+@3: from @2
+  call flip param-assignment
+  to:@17
+@17: from @3
+  call plot param-assignment
+  to:@18
+@18: from @17
+  if(true) goto main::@1
+  to:main::@return
+main::@return: from @18
+  return 
+  to:@RETURN
+prepare: from main
   to:prepare::@1
 prepare::@1: from prepare prepare::@1
   (byte) prepare::i#2 ← phi( prepare/(byte) 0 prepare::@1/(byte) prepare::i#1 )
@@ -2634,111 +2774,117 @@ prepare::@1: from prepare prepare::@1
 prepare::@return: from prepare::@1
   return 
   to:@RETURN
-flip: from @7
+flip: from @3
   to:flip::@1
-flip::@1: from @11 flip
-  (byte) flip::r#2 ← phi( @11/(byte) flip::r#1 flip/(byte) 16 )
-  (byte[256]) buffer1#2 ← phi( flip/(byte[256]) buffer1#10 )
-  (byte) flip::srcIdx#3 ← phi( @11/(byte) flip::srcIdx#1 flip/(byte) 0 )
+flip::@1: from @8 flip
+  (byte) flip::r#2 ← phi( @8/(byte) flip::r#1 flip/(byte) 16 )
+  (byte[256]) buffer1#10 ← phi( flip/(byte[256]) buffer1#11 )
+  (byte) flip::srcIdx#3 ← phi( @8/(byte) flip::srcIdx#1 flip/(byte) 0 )
   (byte[256]) buffer2#1 ← phi( flip/(byte[256]) buffer2#10 )
-  (byte) flip::dstIdx#5 ← phi( @11/(byte) flip::dstIdx#2 flip/(byte) 15 )
+  (byte) flip::dstIdx#5 ← phi( @8/(byte) flip::dstIdx#2 flip/(byte) 15 )
   to:flip::@2
 flip::@2: from flip::@1 flip::@2
   (byte) flip::c#2 ← phi( flip::@1/(byte) 16 flip::@2/(byte) flip::c#1 )
   (byte) flip::dstIdx#3 ← phi( flip::@1/(byte) flip::dstIdx#5 flip::@2/(byte) flip::dstIdx#1 )
   (byte) flip::srcIdx#2 ← phi( flip::@1/(byte) flip::srcIdx#3 flip::@2/(byte) flip::srcIdx#1 )
-  (byte~) flip::$0 ← (byte[256]) buffer1#2 *idx (byte) flip::srcIdx#2
+  (byte~) flip::$0 ← (byte[256]) buffer1#10 *idx (byte) flip::srcIdx#2
   *((byte[256]) buffer2#1 + (byte) flip::dstIdx#3) ← (byte~) flip::$0
   (byte) flip::srcIdx#1 ← ++ (byte) flip::srcIdx#2
   (byte) flip::dstIdx#1 ← (byte) flip::dstIdx#3 + (byte) 16
   (byte) flip::c#1 ← -- (byte) flip::c#2
   if((byte) flip::c#1!=(byte) 0) goto flip::@2
-  to:@11
-@11: from flip::@2
+  to:@8
+@8: from flip::@2
   (byte) flip::dstIdx#2 ← -- (byte) flip::dstIdx#1
   (byte) flip::r#1 ← -- (byte) flip::r#2
   if((byte) flip::r#1!=(byte) 0) goto flip::@1
   to:flip::@3
-flip::@3: from @11 flip::@3
-  (byte) flip::i#2 ← phi( @11/(byte) 0 flip::@3/(byte) flip::i#1 )
+flip::@3: from @8 flip::@3
+  (byte) flip::i#2 ← phi( @8/(byte) 0 flip::@3/(byte) flip::i#1 )
   (byte~) flip::$4 ← (byte[256]) buffer2#1 *idx (byte) flip::i#2
-  *((byte[256]) buffer1#2 + (byte) flip::i#2) ← (byte~) flip::$4
+  *((byte[256]) buffer1#10 + (byte) flip::i#2) ← (byte~) flip::$4
   (byte) flip::i#1 ← ++ (byte) flip::i#2
   if((byte) flip::i#1!=(byte) 0) goto flip::@3
   to:flip::@return
 flip::@return: from flip::@3
   return 
   to:@RETURN
-plot: from @19
+plot: from @17
   (byte*) plot::line#0 ← (byte[1000]) SCREEN#1 + (byte) 212
   to:plot::@1
-plot::@1: from @15 plot
-  (byte) plot::y#2 ← phi( @15/(byte) plot::y#1 plot/(byte) 16 )
-  (byte[256]) buffer1#11 ← phi( plot/(byte[256]) buffer1#10 )
-  (byte) plot::i#3 ← phi( @15/(byte) plot::i#1 plot/(byte) 0 )
-  (byte*) plot::line#2 ← phi( @15/(byte*) plot::line#1 plot/(byte*) plot::line#0 )
+plot::@1: from @12 plot
+  (byte) plot::y#2 ← phi( @12/(byte) plot::y#1 plot/(byte) 16 )
+  (byte[256]) buffer1#12 ← phi( plot/(byte[256]) buffer1#11 )
+  (byte) plot::i#3 ← phi( @12/(byte) plot::i#1 plot/(byte) 0 )
+  (byte*) plot::line#2 ← phi( @12/(byte*) plot::line#1 plot/(byte*) plot::line#0 )
   to:plot::@2
 plot::@2: from plot::@1 plot::@2
   (byte) plot::x#2 ← phi( plot::@1/(byte) 0 plot::@2/(byte) plot::x#1 )
   (byte) plot::i#2 ← phi( plot::@1/(byte) plot::i#3 plot::@2/(byte) plot::i#1 )
-  (byte~) plot::$3 ← (byte[256]) buffer1#11 *idx (byte) plot::i#2
+  (byte~) plot::$3 ← (byte[256]) buffer1#12 *idx (byte) plot::i#2
   *((byte*) plot::line#2 + (byte) plot::x#2) ← (byte~) plot::$3
   (byte) plot::i#1 ← ++ (byte) plot::i#2
   (byte) plot::x#1 ← ++ (byte) plot::x#2
   if((byte) plot::x#1<(byte) 16) goto plot::@2
-  to:@15
-@15: from plot::@2
+  to:@12
+@12: from plot::@2
   (byte*) plot::line#1 ← (byte*) plot::line#2 + (byte) 40
   (byte) plot::y#1 ← -- (byte) plot::y#2
   if((byte) plot::y#1!=(byte) 0) goto plot::@1
   to:plot::@return
-plot::@return: from @15
+plot::@return: from @12
   return 
   to:@RETURN
-@END: from @20
+@END: from @BEGIN
 
 Multiple usages for variable. Not optimizing sub-constant (byte) prepare::i#2
 Multiple usages for variable. Not optimizing sub-constant (byte[1000]) SCREEN#1
 Alias (byte[256]) buffer2#1 = (byte[256]) buffer2#10 (byte[256]) buffer2#13 
-Alias (byte[256]) buffer1#10 = (byte[256]) buffer1#20 (byte[256]) buffer1#2 (byte[256]) buffer1#11 
+Alias (byte[256]) buffer1#10 = (byte[256]) buffer1#11 (byte[256]) buffer1#21 (byte[256]) buffer1#12 
 Alias (byte[1000]) SCREEN#1 = (byte[1000]) SCREEN#9 
-Alias (byte*) RASTER#1 = (byte*) RASTER#5 
+Alias (byte*) RASTER#1 = (byte*) RASTER#6 
 Succesful SSA optimization Pass2AliasElimination
 CONTROL FLOW GRAPH
 @BEGIN: from
-  call prepare param-assignment
-  to:@1
-@1: from @20 @BEGIN
-  (byte[256]) buffer1#10 ← phi( @BEGIN/(word) 4096 @20/(byte[256]) buffer1#10 )
-  (byte[256]) buffer2#1 ← phi( @BEGIN/(word) 4352 @20/(byte[256]) buffer2#1 )
-  (byte[1000]) SCREEN#1 ← phi( @BEGIN/(word) 1024 @20/(byte[1000]) SCREEN#1 )
-  (byte*) RASTER#1 ← phi( @BEGIN/(word) 53266 @20/(byte*) RASTER#1 )
-  to:@2
-@2: from @1 @6
-  (byte) c#2 ← phi( @1/(byte) 25 @6/(byte) c#1 )
-  to:@3
-@3: from @2 @3
-  (byte~) $1 ← * (byte*) RASTER#1
-  if((byte~) $1!=(byte) 254) goto @3
-  to:@4
-@4: from @3 @4
-  (byte~) $3 ← * (byte*) RASTER#1
-  if((byte~) $3!=(byte) 255) goto @4
-  to:@6
-@6: from @4
-  (byte) c#1 ← -- (byte) c#2
-  if((byte) c#1!=(byte) 0) goto @2
-  to:@7
-@7: from @6
-  call flip param-assignment
-  to:@19
-@19: from @7
-  call plot param-assignment
-  to:@20
-@20: from @19
-  if(true) goto @1
+  call main param-assignment
   to:@END
-prepare: from @BEGIN
+main: from @BEGIN
+  call prepare param-assignment
+  to:main::@1
+main::@1: from @18 main
+  (byte[256]) buffer1#10 ← phi( main/(word) 4096 @18/(byte[256]) buffer1#10 )
+  (byte[256]) buffer2#1 ← phi( main/(word) 4352 @18/(byte[256]) buffer2#1 )
+  (byte[1000]) SCREEN#1 ← phi( main/(word) 1024 @18/(byte[1000]) SCREEN#1 )
+  (byte*) RASTER#1 ← phi( main/(word) 53266 @18/(byte*) RASTER#1 )
+  to:main::@2
+main::@2: from @2 main::@1
+  (byte) main::c#2 ← phi( @2/(byte) main::c#1 main::@1/(byte) 25 )
+  to:main::@3
+main::@3: from main::@2 main::@3
+  (byte~) main::$1 ← * (byte*) RASTER#1
+  if((byte~) main::$1!=(byte) 254) goto main::@3
+  to:main::@4
+main::@4: from main::@3 main::@4
+  (byte~) main::$3 ← * (byte*) RASTER#1
+  if((byte~) main::$3!=(byte) 255) goto main::@4
+  to:@2
+@2: from main::@4
+  (byte) main::c#1 ← -- (byte) main::c#2
+  if((byte) main::c#1!=(byte) 0) goto main::@2
+  to:@3
+@3: from @2
+  call flip param-assignment
+  to:@17
+@17: from @3
+  call plot param-assignment
+  to:@18
+@18: from @17
+  if(true) goto main::@1
+  to:main::@return
+main::@return: from @18
+  return 
+  to:@RETURN
+prepare: from main
   to:prepare::@1
 prepare::@1: from prepare prepare::@1
   (byte) prepare::i#2 ← phi( prepare/(byte) 0 prepare::@1/(byte) prepare::i#1 )
@@ -2749,12 +2895,12 @@ prepare::@1: from prepare prepare::@1
 prepare::@return: from prepare::@1
   return 
   to:@RETURN
-flip: from @7
+flip: from @3
   to:flip::@1
-flip::@1: from @11 flip
-  (byte) flip::r#2 ← phi( @11/(byte) flip::r#1 flip/(byte) 16 )
-  (byte) flip::srcIdx#3 ← phi( @11/(byte) flip::srcIdx#1 flip/(byte) 0 )
-  (byte) flip::dstIdx#5 ← phi( @11/(byte) flip::dstIdx#2 flip/(byte) 15 )
+flip::@1: from @8 flip
+  (byte) flip::r#2 ← phi( @8/(byte) flip::r#1 flip/(byte) 16 )
+  (byte) flip::srcIdx#3 ← phi( @8/(byte) flip::srcIdx#1 flip/(byte) 0 )
+  (byte) flip::dstIdx#5 ← phi( @8/(byte) flip::dstIdx#2 flip/(byte) 15 )
   to:flip::@2
 flip::@2: from flip::@1 flip::@2
   (byte) flip::c#2 ← phi( flip::@1/(byte) 16 flip::@2/(byte) flip::c#1 )
@@ -2766,14 +2912,14 @@ flip::@2: from flip::@1 flip::@2
   (byte) flip::dstIdx#1 ← (byte) flip::dstIdx#3 + (byte) 16
   (byte) flip::c#1 ← -- (byte) flip::c#2
   if((byte) flip::c#1!=(byte) 0) goto flip::@2
-  to:@11
-@11: from flip::@2
+  to:@8
+@8: from flip::@2
   (byte) flip::dstIdx#2 ← -- (byte) flip::dstIdx#1
   (byte) flip::r#1 ← -- (byte) flip::r#2
   if((byte) flip::r#1!=(byte) 0) goto flip::@1
   to:flip::@3
-flip::@3: from @11 flip::@3
-  (byte) flip::i#2 ← phi( @11/(byte) 0 flip::@3/(byte) flip::i#1 )
+flip::@3: from @8 flip::@3
+  (byte) flip::i#2 ← phi( @8/(byte) 0 flip::@3/(byte) flip::i#1 )
   (byte~) flip::$4 ← (byte[256]) buffer2#1 *idx (byte) flip::i#2
   *((byte[256]) buffer1#10 + (byte) flip::i#2) ← (byte~) flip::$4
   (byte) flip::i#1 ← ++ (byte) flip::i#2
@@ -2782,13 +2928,13 @@ flip::@3: from @11 flip::@3
 flip::@return: from flip::@3
   return 
   to:@RETURN
-plot: from @19
+plot: from @17
   (byte*) plot::line#0 ← (byte[1000]) SCREEN#1 + (byte) 212
   to:plot::@1
-plot::@1: from @15 plot
-  (byte) plot::y#2 ← phi( @15/(byte) plot::y#1 plot/(byte) 16 )
-  (byte) plot::i#3 ← phi( @15/(byte) plot::i#1 plot/(byte) 0 )
-  (byte*) plot::line#2 ← phi( @15/(byte*) plot::line#1 plot/(byte*) plot::line#0 )
+plot::@1: from @12 plot
+  (byte) plot::y#2 ← phi( @12/(byte) plot::y#1 plot/(byte) 16 )
+  (byte) plot::i#3 ← phi( @12/(byte) plot::i#1 plot/(byte) 0 )
+  (byte*) plot::line#2 ← phi( @12/(byte*) plot::line#1 plot/(byte*) plot::line#0 )
   to:plot::@2
 plot::@2: from plot::@1 plot::@2
   (byte) plot::x#2 ← phi( plot::@1/(byte) 0 plot::@2/(byte) plot::x#1 )
@@ -2798,16 +2944,16 @@ plot::@2: from plot::@1 plot::@2
   (byte) plot::i#1 ← ++ (byte) plot::i#2
   (byte) plot::x#1 ← ++ (byte) plot::x#2
   if((byte) plot::x#1<(byte) 16) goto plot::@2
-  to:@15
-@15: from plot::@2
+  to:@12
+@12: from plot::@2
   (byte*) plot::line#1 ← (byte*) plot::line#2 + (byte) 40
   (byte) plot::y#1 ← -- (byte) plot::y#2
   if((byte) plot::y#1!=(byte) 0) goto plot::@1
   to:plot::@return
-plot::@return: from @15
+plot::@return: from @12
   return 
   to:@RETURN
-@END: from @20
+@END: from @BEGIN
 
 Self Phi Eliminated (byte[256]) buffer1#10
 Self Phi Eliminated (byte[256]) buffer2#1
@@ -2816,39 +2962,45 @@ Self Phi Eliminated (byte*) RASTER#1
 Succesful SSA optimization Pass2SelfPhiElimination
 CONTROL FLOW GRAPH
 @BEGIN: from
-  call prepare param-assignment
-  to:@1
-@1: from @20 @BEGIN
-  (byte[256]) buffer1#10 ← phi( @BEGIN/(word) 4096 )
-  (byte[256]) buffer2#1 ← phi( @BEGIN/(word) 4352 )
-  (byte[1000]) SCREEN#1 ← phi( @BEGIN/(word) 1024 )
-  (byte*) RASTER#1 ← phi( @BEGIN/(word) 53266 )
-  to:@2
-@2: from @1 @6
-  (byte) c#2 ← phi( @1/(byte) 25 @6/(byte) c#1 )
-  to:@3
-@3: from @2 @3
-  (byte~) $1 ← * (byte*) RASTER#1
-  if((byte~) $1!=(byte) 254) goto @3
-  to:@4
-@4: from @3 @4
-  (byte~) $3 ← * (byte*) RASTER#1
-  if((byte~) $3!=(byte) 255) goto @4
-  to:@6
-@6: from @4
-  (byte) c#1 ← -- (byte) c#2
-  if((byte) c#1!=(byte) 0) goto @2
-  to:@7
-@7: from @6
-  call flip param-assignment
-  to:@19
-@19: from @7
-  call plot param-assignment
-  to:@20
-@20: from @19
-  if(true) goto @1
+  call main param-assignment
   to:@END
-prepare: from @BEGIN
+main: from @BEGIN
+  call prepare param-assignment
+  to:main::@1
+main::@1: from @18 main
+  (byte[256]) buffer1#10 ← phi( main/(word) 4096 )
+  (byte[256]) buffer2#1 ← phi( main/(word) 4352 )
+  (byte[1000]) SCREEN#1 ← phi( main/(word) 1024 )
+  (byte*) RASTER#1 ← phi( main/(word) 53266 )
+  to:main::@2
+main::@2: from @2 main::@1
+  (byte) main::c#2 ← phi( @2/(byte) main::c#1 main::@1/(byte) 25 )
+  to:main::@3
+main::@3: from main::@2 main::@3
+  (byte~) main::$1 ← * (byte*) RASTER#1
+  if((byte~) main::$1!=(byte) 254) goto main::@3
+  to:main::@4
+main::@4: from main::@3 main::@4
+  (byte~) main::$3 ← * (byte*) RASTER#1
+  if((byte~) main::$3!=(byte) 255) goto main::@4
+  to:@2
+@2: from main::@4
+  (byte) main::c#1 ← -- (byte) main::c#2
+  if((byte) main::c#1!=(byte) 0) goto main::@2
+  to:@3
+@3: from @2
+  call flip param-assignment
+  to:@17
+@17: from @3
+  call plot param-assignment
+  to:@18
+@18: from @17
+  if(true) goto main::@1
+  to:main::@return
+main::@return: from @18
+  return 
+  to:@RETURN
+prepare: from main
   to:prepare::@1
 prepare::@1: from prepare prepare::@1
   (byte) prepare::i#2 ← phi( prepare/(byte) 0 prepare::@1/(byte) prepare::i#1 )
@@ -2859,12 +3011,12 @@ prepare::@1: from prepare prepare::@1
 prepare::@return: from prepare::@1
   return 
   to:@RETURN
-flip: from @7
+flip: from @3
   to:flip::@1
-flip::@1: from @11 flip
-  (byte) flip::r#2 ← phi( @11/(byte) flip::r#1 flip/(byte) 16 )
-  (byte) flip::srcIdx#3 ← phi( @11/(byte) flip::srcIdx#1 flip/(byte) 0 )
-  (byte) flip::dstIdx#5 ← phi( @11/(byte) flip::dstIdx#2 flip/(byte) 15 )
+flip::@1: from @8 flip
+  (byte) flip::r#2 ← phi( @8/(byte) flip::r#1 flip/(byte) 16 )
+  (byte) flip::srcIdx#3 ← phi( @8/(byte) flip::srcIdx#1 flip/(byte) 0 )
+  (byte) flip::dstIdx#5 ← phi( @8/(byte) flip::dstIdx#2 flip/(byte) 15 )
   to:flip::@2
 flip::@2: from flip::@1 flip::@2
   (byte) flip::c#2 ← phi( flip::@1/(byte) 16 flip::@2/(byte) flip::c#1 )
@@ -2876,14 +3028,14 @@ flip::@2: from flip::@1 flip::@2
   (byte) flip::dstIdx#1 ← (byte) flip::dstIdx#3 + (byte) 16
   (byte) flip::c#1 ← -- (byte) flip::c#2
   if((byte) flip::c#1!=(byte) 0) goto flip::@2
-  to:@11
-@11: from flip::@2
+  to:@8
+@8: from flip::@2
   (byte) flip::dstIdx#2 ← -- (byte) flip::dstIdx#1
   (byte) flip::r#1 ← -- (byte) flip::r#2
   if((byte) flip::r#1!=(byte) 0) goto flip::@1
   to:flip::@3
-flip::@3: from @11 flip::@3
-  (byte) flip::i#2 ← phi( @11/(byte) 0 flip::@3/(byte) flip::i#1 )
+flip::@3: from @8 flip::@3
+  (byte) flip::i#2 ← phi( @8/(byte) 0 flip::@3/(byte) flip::i#1 )
   (byte~) flip::$4 ← (byte[256]) buffer2#1 *idx (byte) flip::i#2
   *((byte[256]) buffer1#10 + (byte) flip::i#2) ← (byte~) flip::$4
   (byte) flip::i#1 ← ++ (byte) flip::i#2
@@ -2892,13 +3044,13 @@ flip::@3: from @11 flip::@3
 flip::@return: from flip::@3
   return 
   to:@RETURN
-plot: from @19
+plot: from @17
   (byte*) plot::line#0 ← (byte[1000]) SCREEN#1 + (byte) 212
   to:plot::@1
-plot::@1: from @15 plot
-  (byte) plot::y#2 ← phi( @15/(byte) plot::y#1 plot/(byte) 16 )
-  (byte) plot::i#3 ← phi( @15/(byte) plot::i#1 plot/(byte) 0 )
-  (byte*) plot::line#2 ← phi( @15/(byte*) plot::line#1 plot/(byte*) plot::line#0 )
+plot::@1: from @12 plot
+  (byte) plot::y#2 ← phi( @12/(byte) plot::y#1 plot/(byte) 16 )
+  (byte) plot::i#3 ← phi( @12/(byte) plot::i#1 plot/(byte) 0 )
+  (byte*) plot::line#2 ← phi( @12/(byte*) plot::line#1 plot/(byte*) plot::line#0 )
   to:plot::@2
 plot::@2: from plot::@1 plot::@2
   (byte) plot::x#2 ← phi( plot::@1/(byte) 0 plot::@2/(byte) plot::x#1 )
@@ -2908,16 +3060,16 @@ plot::@2: from plot::@1 plot::@2
   (byte) plot::i#1 ← ++ (byte) plot::i#2
   (byte) plot::x#1 ← ++ (byte) plot::x#2
   if((byte) plot::x#1<(byte) 16) goto plot::@2
-  to:@15
-@15: from plot::@2
+  to:@12
+@12: from plot::@2
   (byte*) plot::line#1 ← (byte*) plot::line#2 + (byte) 40
   (byte) plot::y#1 ← -- (byte) plot::y#2
   if((byte) plot::y#1!=(byte) 0) goto plot::@1
   to:plot::@return
-plot::@return: from @15
+plot::@return: from @12
   return 
   to:@RETURN
-@END: from @20
+@END: from @BEGIN
 
 Constant (byte[256]) buffer1#10 (word) 4096
 Constant (byte[256]) buffer2#1 (word) 4352
@@ -2926,35 +3078,41 @@ Constant (byte*) RASTER#1 (word) 53266
 Succesful SSA optimization Pass2ConstantPropagation
 CONTROL FLOW GRAPH
 @BEGIN: from
-  call prepare param-assignment
-  to:@1
-@1: from @20 @BEGIN
-  to:@2
-@2: from @1 @6
-  (byte) c#2 ← phi( @1/(byte) 25 @6/(byte) c#1 )
-  to:@3
-@3: from @2 @3
-  (byte~) $1 ← * (word) 53266
-  if((byte~) $1!=(byte) 254) goto @3
-  to:@4
-@4: from @3 @4
-  (byte~) $3 ← * (word) 53266
-  if((byte~) $3!=(byte) 255) goto @4
-  to:@6
-@6: from @4
-  (byte) c#1 ← -- (byte) c#2
-  if((byte) c#1!=(byte) 0) goto @2
-  to:@7
-@7: from @6
-  call flip param-assignment
-  to:@19
-@19: from @7
-  call plot param-assignment
-  to:@20
-@20: from @19
-  if(true) goto @1
+  call main param-assignment
   to:@END
-prepare: from @BEGIN
+main: from @BEGIN
+  call prepare param-assignment
+  to:main::@1
+main::@1: from @18 main
+  to:main::@2
+main::@2: from @2 main::@1
+  (byte) main::c#2 ← phi( @2/(byte) main::c#1 main::@1/(byte) 25 )
+  to:main::@3
+main::@3: from main::@2 main::@3
+  (byte~) main::$1 ← * (word) 53266
+  if((byte~) main::$1!=(byte) 254) goto main::@3
+  to:main::@4
+main::@4: from main::@3 main::@4
+  (byte~) main::$3 ← * (word) 53266
+  if((byte~) main::$3!=(byte) 255) goto main::@4
+  to:@2
+@2: from main::@4
+  (byte) main::c#1 ← -- (byte) main::c#2
+  if((byte) main::c#1!=(byte) 0) goto main::@2
+  to:@3
+@3: from @2
+  call flip param-assignment
+  to:@17
+@17: from @3
+  call plot param-assignment
+  to:@18
+@18: from @17
+  if(true) goto main::@1
+  to:main::@return
+main::@return: from @18
+  return 
+  to:@RETURN
+prepare: from main
   to:prepare::@1
 prepare::@1: from prepare prepare::@1
   (byte) prepare::i#2 ← phi( prepare/(byte) 0 prepare::@1/(byte) prepare::i#1 )
@@ -2965,12 +3123,12 @@ prepare::@1: from prepare prepare::@1
 prepare::@return: from prepare::@1
   return 
   to:@RETURN
-flip: from @7
+flip: from @3
   to:flip::@1
-flip::@1: from @11 flip
-  (byte) flip::r#2 ← phi( @11/(byte) flip::r#1 flip/(byte) 16 )
-  (byte) flip::srcIdx#3 ← phi( @11/(byte) flip::srcIdx#1 flip/(byte) 0 )
-  (byte) flip::dstIdx#5 ← phi( @11/(byte) flip::dstIdx#2 flip/(byte) 15 )
+flip::@1: from @8 flip
+  (byte) flip::r#2 ← phi( @8/(byte) flip::r#1 flip/(byte) 16 )
+  (byte) flip::srcIdx#3 ← phi( @8/(byte) flip::srcIdx#1 flip/(byte) 0 )
+  (byte) flip::dstIdx#5 ← phi( @8/(byte) flip::dstIdx#2 flip/(byte) 15 )
   to:flip::@2
 flip::@2: from flip::@1 flip::@2
   (byte) flip::c#2 ← phi( flip::@1/(byte) 16 flip::@2/(byte) flip::c#1 )
@@ -2982,14 +3140,14 @@ flip::@2: from flip::@1 flip::@2
   (byte) flip::dstIdx#1 ← (byte) flip::dstIdx#3 + (byte) 16
   (byte) flip::c#1 ← -- (byte) flip::c#2
   if((byte) flip::c#1!=(byte) 0) goto flip::@2
-  to:@11
-@11: from flip::@2
+  to:@8
+@8: from flip::@2
   (byte) flip::dstIdx#2 ← -- (byte) flip::dstIdx#1
   (byte) flip::r#1 ← -- (byte) flip::r#2
   if((byte) flip::r#1!=(byte) 0) goto flip::@1
   to:flip::@3
-flip::@3: from @11 flip::@3
-  (byte) flip::i#2 ← phi( @11/(byte) 0 flip::@3/(byte) flip::i#1 )
+flip::@3: from @8 flip::@3
+  (byte) flip::i#2 ← phi( @8/(byte) 0 flip::@3/(byte) flip::i#1 )
   (byte~) flip::$4 ← (word) 4352 *idx (byte) flip::i#2
   *((word) 4096 + (byte) flip::i#2) ← (byte~) flip::$4
   (byte) flip::i#1 ← ++ (byte) flip::i#2
@@ -2998,13 +3156,13 @@ flip::@3: from @11 flip::@3
 flip::@return: from flip::@3
   return 
   to:@RETURN
-plot: from @19
+plot: from @17
   (byte*) plot::line#0 ← (word) 1024 + (byte) 212
   to:plot::@1
-plot::@1: from @15 plot
-  (byte) plot::y#2 ← phi( @15/(byte) plot::y#1 plot/(byte) 16 )
-  (byte) plot::i#3 ← phi( @15/(byte) plot::i#1 plot/(byte) 0 )
-  (byte*) plot::line#2 ← phi( @15/(byte*) plot::line#1 plot/(byte*) plot::line#0 )
+plot::@1: from @12 plot
+  (byte) plot::y#2 ← phi( @12/(byte) plot::y#1 plot/(byte) 16 )
+  (byte) plot::i#3 ← phi( @12/(byte) plot::i#1 plot/(byte) 0 )
+  (byte*) plot::line#2 ← phi( @12/(byte*) plot::line#1 plot/(byte*) plot::line#0 )
   to:plot::@2
 plot::@2: from plot::@1 plot::@2
   (byte) plot::x#2 ← phi( plot::@1/(byte) 0 plot::@2/(byte) plot::x#1 )
@@ -3014,53 +3172,59 @@ plot::@2: from plot::@1 plot::@2
   (byte) plot::i#1 ← ++ (byte) plot::i#2
   (byte) plot::x#1 ← ++ (byte) plot::x#2
   if((byte) plot::x#1<(byte) 16) goto plot::@2
-  to:@15
-@15: from plot::@2
+  to:@12
+@12: from plot::@2
   (byte*) plot::line#1 ← (byte*) plot::line#2 + (byte) 40
   (byte) plot::y#1 ← -- (byte) plot::y#2
   if((byte) plot::y#1!=(byte) 0) goto plot::@1
   to:plot::@return
-plot::@return: from @15
+plot::@return: from @12
   return 
   to:@RETURN
-@END: from @20
+@END: from @BEGIN
 
 Multiple usages for variable. Not optimizing sub-constant (byte) prepare::i#2
 Multiple usages for variable. Not optimizing sub-constant (byte) flip::srcIdx#2
 Multiple usages for variable. Not optimizing sub-constant (byte) flip::i#2
 Multiple usages for variable. Not optimizing sub-constant (byte) flip::i#2
 Multiple usages for variable. Not optimizing sub-constant (byte) plot::i#2
-Culled Empty Block (label) @1
+Culled Empty Block (label) main::@1
 Succesful SSA optimization Pass2CullEmptyBlocks
 CONTROL FLOW GRAPH
 @BEGIN: from
-  call prepare param-assignment
-  to:@2
-@2: from @20 @6 @BEGIN
-  (byte) c#2 ← phi( @20/(byte) 25 @6/(byte) c#1 @BEGIN/(byte) 25 )
-  to:@3
-@3: from @2 @3
-  (byte~) $1 ← * (word) 53266
-  if((byte~) $1!=(byte) 254) goto @3
-  to:@4
-@4: from @3 @4
-  (byte~) $3 ← * (word) 53266
-  if((byte~) $3!=(byte) 255) goto @4
-  to:@6
-@6: from @4
-  (byte) c#1 ← -- (byte) c#2
-  if((byte) c#1!=(byte) 0) goto @2
-  to:@7
-@7: from @6
-  call flip param-assignment
-  to:@19
-@19: from @7
-  call plot param-assignment
-  to:@20
-@20: from @19
-  if(true) goto @2
+  call main param-assignment
   to:@END
-prepare: from @BEGIN
+main: from @BEGIN
+  call prepare param-assignment
+  to:main::@2
+main::@2: from @18 @2 main
+  (byte) main::c#2 ← phi( @2/(byte) main::c#1 @18/(byte) 25 main/(byte) 25 )
+  to:main::@3
+main::@3: from main::@2 main::@3
+  (byte~) main::$1 ← * (word) 53266
+  if((byte~) main::$1!=(byte) 254) goto main::@3
+  to:main::@4
+main::@4: from main::@3 main::@4
+  (byte~) main::$3 ← * (word) 53266
+  if((byte~) main::$3!=(byte) 255) goto main::@4
+  to:@2
+@2: from main::@4
+  (byte) main::c#1 ← -- (byte) main::c#2
+  if((byte) main::c#1!=(byte) 0) goto main::@2
+  to:@3
+@3: from @2
+  call flip param-assignment
+  to:@17
+@17: from @3
+  call plot param-assignment
+  to:@18
+@18: from @17
+  if(true) goto main::@2
+  to:main::@return
+main::@return: from @18
+  return 
+  to:@RETURN
+prepare: from main
   to:prepare::@1
 prepare::@1: from prepare prepare::@1
   (byte) prepare::i#2 ← phi( prepare/(byte) 0 prepare::@1/(byte) prepare::i#1 )
@@ -3071,12 +3235,12 @@ prepare::@1: from prepare prepare::@1
 prepare::@return: from prepare::@1
   return 
   to:@RETURN
-flip: from @7
+flip: from @3
   to:flip::@1
-flip::@1: from @11 flip
-  (byte) flip::r#2 ← phi( @11/(byte) flip::r#1 flip/(byte) 16 )
-  (byte) flip::srcIdx#3 ← phi( @11/(byte) flip::srcIdx#1 flip/(byte) 0 )
-  (byte) flip::dstIdx#5 ← phi( @11/(byte) flip::dstIdx#2 flip/(byte) 15 )
+flip::@1: from @8 flip
+  (byte) flip::r#2 ← phi( @8/(byte) flip::r#1 flip/(byte) 16 )
+  (byte) flip::srcIdx#3 ← phi( @8/(byte) flip::srcIdx#1 flip/(byte) 0 )
+  (byte) flip::dstIdx#5 ← phi( @8/(byte) flip::dstIdx#2 flip/(byte) 15 )
   to:flip::@2
 flip::@2: from flip::@1 flip::@2
   (byte) flip::c#2 ← phi( flip::@1/(byte) 16 flip::@2/(byte) flip::c#1 )
@@ -3088,14 +3252,14 @@ flip::@2: from flip::@1 flip::@2
   (byte) flip::dstIdx#1 ← (byte) flip::dstIdx#3 + (byte) 16
   (byte) flip::c#1 ← -- (byte) flip::c#2
   if((byte) flip::c#1!=(byte) 0) goto flip::@2
-  to:@11
-@11: from flip::@2
+  to:@8
+@8: from flip::@2
   (byte) flip::dstIdx#2 ← -- (byte) flip::dstIdx#1
   (byte) flip::r#1 ← -- (byte) flip::r#2
   if((byte) flip::r#1!=(byte) 0) goto flip::@1
   to:flip::@3
-flip::@3: from @11 flip::@3
-  (byte) flip::i#2 ← phi( @11/(byte) 0 flip::@3/(byte) flip::i#1 )
+flip::@3: from @8 flip::@3
+  (byte) flip::i#2 ← phi( @8/(byte) 0 flip::@3/(byte) flip::i#1 )
   (byte~) flip::$4 ← (word) 4352 *idx (byte) flip::i#2
   *((word) 4096 + (byte) flip::i#2) ← (byte~) flip::$4
   (byte) flip::i#1 ← ++ (byte) flip::i#2
@@ -3104,13 +3268,13 @@ flip::@3: from @11 flip::@3
 flip::@return: from flip::@3
   return 
   to:@RETURN
-plot: from @19
+plot: from @17
   (byte*) plot::line#0 ← (word) 1024 + (byte) 212
   to:plot::@1
-plot::@1: from @15 plot
-  (byte) plot::y#2 ← phi( @15/(byte) plot::y#1 plot/(byte) 16 )
-  (byte) plot::i#3 ← phi( @15/(byte) plot::i#1 plot/(byte) 0 )
-  (byte*) plot::line#2 ← phi( @15/(byte*) plot::line#1 plot/(byte*) plot::line#0 )
+plot::@1: from @12 plot
+  (byte) plot::y#2 ← phi( @12/(byte) plot::y#1 plot/(byte) 16 )
+  (byte) plot::i#3 ← phi( @12/(byte) plot::i#1 plot/(byte) 0 )
+  (byte*) plot::line#2 ← phi( @12/(byte*) plot::line#1 plot/(byte*) plot::line#0 )
   to:plot::@2
 plot::@2: from plot::@1 plot::@2
   (byte) plot::x#2 ← phi( plot::@1/(byte) 0 plot::@2/(byte) plot::x#1 )
@@ -3120,48 +3284,54 @@ plot::@2: from plot::@1 plot::@2
   (byte) plot::i#1 ← ++ (byte) plot::i#2
   (byte) plot::x#1 ← ++ (byte) plot::x#2
   if((byte) plot::x#1<(byte) 16) goto plot::@2
-  to:@15
-@15: from plot::@2
+  to:@12
+@12: from plot::@2
   (byte*) plot::line#1 ← (byte*) plot::line#2 + (byte) 40
   (byte) plot::y#1 ← -- (byte) plot::y#2
   if((byte) plot::y#1!=(byte) 0) goto plot::@1
   to:plot::@return
-plot::@return: from @15
+plot::@return: from @12
   return 
   to:@RETURN
-@END: from @20
+@END: from @BEGIN
 
 Constant (byte*) plot::line#0 (word) 1236
 Succesful SSA optimization Pass2ConstantPropagation
 CONTROL FLOW GRAPH
 @BEGIN: from
-  call prepare param-assignment
-  to:@2
-@2: from @20 @6 @BEGIN
-  (byte) c#2 ← phi( @20/(byte) 25 @6/(byte) c#1 @BEGIN/(byte) 25 )
-  to:@3
-@3: from @2 @3
-  (byte~) $1 ← * (word) 53266
-  if((byte~) $1!=(byte) 254) goto @3
-  to:@4
-@4: from @3 @4
-  (byte~) $3 ← * (word) 53266
-  if((byte~) $3!=(byte) 255) goto @4
-  to:@6
-@6: from @4
-  (byte) c#1 ← -- (byte) c#2
-  if((byte) c#1!=(byte) 0) goto @2
-  to:@7
-@7: from @6
-  call flip param-assignment
-  to:@19
-@19: from @7
-  call plot param-assignment
-  to:@20
-@20: from @19
-  if(true) goto @2
+  call main param-assignment
   to:@END
-prepare: from @BEGIN
+main: from @BEGIN
+  call prepare param-assignment
+  to:main::@2
+main::@2: from @18 @2 main
+  (byte) main::c#2 ← phi( @2/(byte) main::c#1 @18/(byte) 25 main/(byte) 25 )
+  to:main::@3
+main::@3: from main::@2 main::@3
+  (byte~) main::$1 ← * (word) 53266
+  if((byte~) main::$1!=(byte) 254) goto main::@3
+  to:main::@4
+main::@4: from main::@3 main::@4
+  (byte~) main::$3 ← * (word) 53266
+  if((byte~) main::$3!=(byte) 255) goto main::@4
+  to:@2
+@2: from main::@4
+  (byte) main::c#1 ← -- (byte) main::c#2
+  if((byte) main::c#1!=(byte) 0) goto main::@2
+  to:@3
+@3: from @2
+  call flip param-assignment
+  to:@17
+@17: from @3
+  call plot param-assignment
+  to:@18
+@18: from @17
+  if(true) goto main::@2
+  to:main::@return
+main::@return: from @18
+  return 
+  to:@RETURN
+prepare: from main
   to:prepare::@1
 prepare::@1: from prepare prepare::@1
   (byte) prepare::i#2 ← phi( prepare/(byte) 0 prepare::@1/(byte) prepare::i#1 )
@@ -3172,12 +3342,12 @@ prepare::@1: from prepare prepare::@1
 prepare::@return: from prepare::@1
   return 
   to:@RETURN
-flip: from @7
+flip: from @3
   to:flip::@1
-flip::@1: from @11 flip
-  (byte) flip::r#2 ← phi( @11/(byte) flip::r#1 flip/(byte) 16 )
-  (byte) flip::srcIdx#3 ← phi( @11/(byte) flip::srcIdx#1 flip/(byte) 0 )
-  (byte) flip::dstIdx#5 ← phi( @11/(byte) flip::dstIdx#2 flip/(byte) 15 )
+flip::@1: from @8 flip
+  (byte) flip::r#2 ← phi( @8/(byte) flip::r#1 flip/(byte) 16 )
+  (byte) flip::srcIdx#3 ← phi( @8/(byte) flip::srcIdx#1 flip/(byte) 0 )
+  (byte) flip::dstIdx#5 ← phi( @8/(byte) flip::dstIdx#2 flip/(byte) 15 )
   to:flip::@2
 flip::@2: from flip::@1 flip::@2
   (byte) flip::c#2 ← phi( flip::@1/(byte) 16 flip::@2/(byte) flip::c#1 )
@@ -3189,14 +3359,14 @@ flip::@2: from flip::@1 flip::@2
   (byte) flip::dstIdx#1 ← (byte) flip::dstIdx#3 + (byte) 16
   (byte) flip::c#1 ← -- (byte) flip::c#2
   if((byte) flip::c#1!=(byte) 0) goto flip::@2
-  to:@11
-@11: from flip::@2
+  to:@8
+@8: from flip::@2
   (byte) flip::dstIdx#2 ← -- (byte) flip::dstIdx#1
   (byte) flip::r#1 ← -- (byte) flip::r#2
   if((byte) flip::r#1!=(byte) 0) goto flip::@1
   to:flip::@3
-flip::@3: from @11 flip::@3
-  (byte) flip::i#2 ← phi( @11/(byte) 0 flip::@3/(byte) flip::i#1 )
+flip::@3: from @8 flip::@3
+  (byte) flip::i#2 ← phi( @8/(byte) 0 flip::@3/(byte) flip::i#1 )
   (byte~) flip::$4 ← (word) 4352 *idx (byte) flip::i#2
   *((word) 4096 + (byte) flip::i#2) ← (byte~) flip::$4
   (byte) flip::i#1 ← ++ (byte) flip::i#2
@@ -3205,12 +3375,12 @@ flip::@3: from @11 flip::@3
 flip::@return: from flip::@3
   return 
   to:@RETURN
-plot: from @19
+plot: from @17
   to:plot::@1
-plot::@1: from @15 plot
-  (byte) plot::y#2 ← phi( @15/(byte) plot::y#1 plot/(byte) 16 )
-  (byte) plot::i#3 ← phi( @15/(byte) plot::i#1 plot/(byte) 0 )
-  (byte*) plot::line#2 ← phi( @15/(byte*) plot::line#1 plot/(word) 1236 )
+plot::@1: from @12 plot
+  (byte) plot::y#2 ← phi( @12/(byte) plot::y#1 plot/(byte) 16 )
+  (byte) plot::i#3 ← phi( @12/(byte) plot::i#1 plot/(byte) 0 )
+  (byte*) plot::line#2 ← phi( @12/(byte*) plot::line#1 plot/(word) 1236 )
   to:plot::@2
 plot::@2: from plot::@1 plot::@2
   (byte) plot::x#2 ← phi( plot::@1/(byte) 0 plot::@2/(byte) plot::x#1 )
@@ -3220,16 +3390,16 @@ plot::@2: from plot::@1 plot::@2
   (byte) plot::i#1 ← ++ (byte) plot::i#2
   (byte) plot::x#1 ← ++ (byte) plot::x#2
   if((byte) plot::x#1<(byte) 16) goto plot::@2
-  to:@15
-@15: from plot::@2
+  to:@12
+@12: from plot::@2
   (byte*) plot::line#1 ← (byte*) plot::line#2 + (byte) 40
   (byte) plot::y#1 ← -- (byte) plot::y#2
   if((byte) plot::y#1!=(byte) 0) goto plot::@1
   to:plot::@return
-plot::@return: from @15
+plot::@return: from @12
   return 
   to:@RETURN
-@END: from @20
+@END: from @BEGIN
 
 Multiple usages for variable. Not optimizing sub-constant (byte) prepare::i#2
 Multiple usages for variable. Not optimizing sub-constant (byte) flip::srcIdx#2
@@ -3243,52 +3413,57 @@ Multiple usages for variable. Not optimizing sub-constant (byte) flip::i#2
 Multiple usages for variable. Not optimizing sub-constant (byte) plot::i#2
 INITIAL ASM
 BBEGIN:
-  jsr prepare
-B2_from_BBEGIN:
-  // (byte) c#2 = (byte) 25  // xby=coby1
-  ldx #25
-  jmp B2
-B2_from_B20:
-  // (byte) c#2 = (byte) 25  // xby=coby1
-  ldx #25
-  jmp B2
-B2_from_B6:
-  // (byte) c#2 = (byte) c#1  // register copy 
-  jmp B2
-B2:
-  jmp B3
-B3:
-  // (byte~) $1 ← * (word) 53266  //  aby=_star_cowo1
-  lda 53266
-  // if((byte~) $1!=(byte) 254) goto @3  //  aby_neq_coby1_then_la1
-  cmp #254
-  bne B3
-  jmp B4
-B4:
-  // (byte~) $3 ← * (word) 53266  //  aby=_star_cowo1
-  lda 53266
-  // if((byte~) $3!=(byte) 255) goto @4  //  aby_neq_coby1_then_la1
-  cmp #255
-  bne B4
-  jmp B6
-B6:
-  // (byte) c#1 ← -- (byte) c#2  //  xby=_dec_xby
-  dex
-  // if((byte) c#1!=(byte) 0) goto @2  //  xby_neq_0_then_la1
-  cpx #0
-  bne B2_from_B6
-  jmp B7
-B7:
-  jsr flip
-  jmp B19
-B19:
-  jsr plot
-  jmp B20
-B20:
-  // if(true) goto @2  //  true_then_la1
-  jmp B2_from_B20
+  jsr main
   jmp BEND
 BEND:
+main:
+  jsr prepare
+main__B2_from_main:
+  // (byte) main::c#2 = (byte) 25  // xby=coby1
+  ldx #25
+  jmp main__B2
+main__B2_from_B18:
+  // (byte) main::c#2 = (byte) 25  // xby=coby1
+  ldx #25
+  jmp main__B2
+main__B2_from_B2:
+  // (byte) main::c#2 = (byte) main::c#1  // register copy 
+  jmp main__B2
+main__B2:
+  jmp main__B3
+main__B3:
+  // (byte~) main::$1 ← * (word) 53266  //  aby=_star_cowo1
+  lda 53266
+  // if((byte~) main::$1!=(byte) 254) goto main::@3  //  aby_neq_coby1_then_la1
+  cmp #254
+  bne main__main__B3
+  jmp main__B4
+main__B4:
+  // (byte~) main::$3 ← * (word) 53266  //  aby=_star_cowo1
+  lda 53266
+  // if((byte~) main::$3!=(byte) 255) goto main::@4  //  aby_neq_coby1_then_la1
+  cmp #255
+  bne main__main__B4
+  jmp B2
+B2:
+  // (byte) main::c#1 ← -- (byte) main::c#2  //  xby=_dec_xby
+  dex
+  // if((byte) main::c#1!=(byte) 0) goto main::@2  //  xby_neq_0_then_la1
+  cpx #0
+  bne main__B2_from_B2
+  jmp B3
+B3:
+  jsr flip
+  jmp B17
+B17:
+  jsr plot
+  jmp B18
+B18:
+  // if(true) goto main::@2  //  true_then_la1
+  jmp main__B2_from_B18
+  jmp main__Breturn
+main__Breturn:
+  rts
 plot:
 plot__B1_from_plot:
   // (byte) plot::y#2 = (byte) 16  // zpby1=coby1
@@ -3302,7 +3477,7 @@ plot__B1_from_plot:
   lda #>1236
   sta 101+1
   jmp plot__B1
-plot__B1_from_B15:
+plot__B1_from_B12:
   // (byte) plot::y#2 = (byte) plot::y#1  // register copy 
   // (byte) plot::i#3 = (byte) plot::i#1  // register copy 
   // (byte*) plot::line#2 = (byte*) plot::line#1  // register copy 
@@ -3329,8 +3504,8 @@ plot__B2:
   // if((byte) plot::x#1<(byte) 16) goto plot::@2  //  yby_lt_coby1_then_la1
   cpy #16
   bcc plot__B2_from_B2
-  jmp B15
-B15:
+  jmp B12
+B12:
   // (byte*) plot::line#1 ← (byte*) plot::line#2 + (byte) 40  //  zpptrby1=zpptrby1_plus_coby1
   lda 101
   clc
@@ -3343,7 +3518,7 @@ B15:
   dec 100
   // if((byte) plot::y#1!=(byte) 0) goto plot::@1  //  zpby1_neq_0_then_la1
   lda 100
-  bne plot__B1_from_B15
+  bne plot__B1_from_B12
   jmp plot__Breturn
 plot__Breturn:
   rts
@@ -3357,7 +3532,7 @@ flip__B1_from_flip:
   // (byte) flip::dstIdx#5 = (byte) 15  // yby=coby1
   ldy #15
   jmp flip__B1
-flip__B1_from_B11:
+flip__B1_from_B8:
   // (byte) flip::r#2 = (byte) flip::r#1  // register copy 
   // (byte) flip::srcIdx#3 = (byte) flip::srcIdx#1  // register copy 
   // (byte) flip::dstIdx#5 = (byte) flip::dstIdx#2  // register copy 
@@ -3392,16 +3567,16 @@ flip__B2:
   // if((byte) flip::c#1!=(byte) 0) goto flip::@2  //  zpby1_neq_0_then_la1
   lda 103
   bne flip__B2_from_B2
-  jmp B11
-B11:
+  jmp B8
+B8:
   // (byte) flip::dstIdx#2 ← -- (byte) flip::dstIdx#1  //  yby=_dec_yby
   dey
   // (byte) flip::r#1 ← -- (byte) flip::r#2  //  zpby1=_dec_zpby1
   dec 104
   // if((byte) flip::r#1!=(byte) 0) goto flip::@1  //  zpby1_neq_0_then_la1
   lda 104
-  bne flip__B1_from_B11
-flip__B3_from_B11:
+  bne flip__B1_from_B8
+flip__B3_from_B8:
   // (byte) flip::i#2 = (byte) 0  // xby=coby1
   ldx #0
   jmp flip__B3
@@ -3442,21 +3617,22 @@ prepare__B1:
 prepare__Breturn:
   rts
 
+Removing instruction jmp BEND
+Removing instruction jmp main__B2
+Removing instruction jmp main__B3
+Removing instruction jmp main__B4
 Removing instruction jmp B2
 Removing instruction jmp B3
-Removing instruction jmp B4
-Removing instruction jmp B6
-Removing instruction jmp B7
-Removing instruction jmp B19
-Removing instruction jmp B20
-Removing instruction jmp BEND
+Removing instruction jmp B17
+Removing instruction jmp B18
+Removing instruction jmp main__Breturn
 Removing instruction jmp plot__B1
 Removing instruction jmp plot__B2
-Removing instruction jmp B15
+Removing instruction jmp B12
 Removing instruction jmp plot__Breturn
 Removing instruction jmp flip__B1
 Removing instruction jmp flip__B2
-Removing instruction jmp B11
+Removing instruction jmp B8
 Removing instruction jmp flip__B3
 Removing instruction jmp flip__Breturn
 Removing instruction jmp prepare__B1
@@ -3464,44 +3640,48 @@ Removing instruction jmp prepare__Breturn
 Succesful ASM optimization Pass4NextJumpElimination
 ASSEMBLER
 BBEGIN:
-  jsr prepare
-B2_from_BBEGIN:
-  // (byte) c#2 = (byte) 25  // xby=coby1
-  ldx #25
-  jmp B2
-B2_from_B20:
-  // (byte) c#2 = (byte) 25  // xby=coby1
-  ldx #25
-  jmp B2
-B2_from_B6:
-  // (byte) c#2 = (byte) c#1  // register copy 
-B2:
-B3:
-  // (byte~) $1 ← * (word) 53266  //  aby=_star_cowo1
-  lda 53266
-  // if((byte~) $1!=(byte) 254) goto @3  //  aby_neq_coby1_then_la1
-  cmp #254
-  bne B3
-B4:
-  // (byte~) $3 ← * (word) 53266  //  aby=_star_cowo1
-  lda 53266
-  // if((byte~) $3!=(byte) 255) goto @4  //  aby_neq_coby1_then_la1
-  cmp #255
-  bne B4
-B6:
-  // (byte) c#1 ← -- (byte) c#2  //  xby=_dec_xby
-  dex
-  // if((byte) c#1!=(byte) 0) goto @2  //  xby_neq_0_then_la1
-  cpx #0
-  bne B2_from_B6
-B7:
-  jsr flip
-B19:
-  jsr plot
-B20:
-  // if(true) goto @2  //  true_then_la1
-  jmp B2_from_B20
+  jsr main
 BEND:
+main:
+  jsr prepare
+main__B2_from_main:
+  // (byte) main::c#2 = (byte) 25  // xby=coby1
+  ldx #25
+  jmp main__B2
+main__B2_from_B18:
+  // (byte) main::c#2 = (byte) 25  // xby=coby1
+  ldx #25
+  jmp main__B2
+main__B2_from_B2:
+  // (byte) main::c#2 = (byte) main::c#1  // register copy 
+main__B2:
+main__B3:
+  // (byte~) main::$1 ← * (word) 53266  //  aby=_star_cowo1
+  lda 53266
+  // if((byte~) main::$1!=(byte) 254) goto main::@3  //  aby_neq_coby1_then_la1
+  cmp #254
+  bne main__main__B3
+main__B4:
+  // (byte~) main::$3 ← * (word) 53266  //  aby=_star_cowo1
+  lda 53266
+  // if((byte~) main::$3!=(byte) 255) goto main::@4  //  aby_neq_coby1_then_la1
+  cmp #255
+  bne main__main__B4
+B2:
+  // (byte) main::c#1 ← -- (byte) main::c#2  //  xby=_dec_xby
+  dex
+  // if((byte) main::c#1!=(byte) 0) goto main::@2  //  xby_neq_0_then_la1
+  cpx #0
+  bne main__B2_from_B2
+B3:
+  jsr flip
+B17:
+  jsr plot
+B18:
+  // if(true) goto main::@2  //  true_then_la1
+  jmp main__B2_from_B18
+main__Breturn:
+  rts
 plot:
 plot__B1_from_plot:
   // (byte) plot::y#2 = (byte) 16  // zpby1=coby1
@@ -3515,7 +3695,7 @@ plot__B1_from_plot:
   lda #>1236
   sta 101+1
   jmp plot__B1
-plot__B1_from_B15:
+plot__B1_from_B12:
   // (byte) plot::y#2 = (byte) plot::y#1  // register copy 
   // (byte) plot::i#3 = (byte) plot::i#1  // register copy 
   // (byte*) plot::line#2 = (byte*) plot::line#1  // register copy 
@@ -3540,7 +3720,7 @@ plot__B2:
   // if((byte) plot::x#1<(byte) 16) goto plot::@2  //  yby_lt_coby1_then_la1
   cpy #16
   bcc plot__B2_from_B2
-B15:
+B12:
   // (byte*) plot::line#1 ← (byte*) plot::line#2 + (byte) 40  //  zpptrby1=zpptrby1_plus_coby1
   lda 101
   clc
@@ -3553,7 +3733,7 @@ B15:
   dec 100
   // if((byte) plot::y#1!=(byte) 0) goto plot::@1  //  zpby1_neq_0_then_la1
   lda 100
-  bne plot__B1_from_B15
+  bne plot__B1_from_B12
 plot__Breturn:
   rts
 flip:
@@ -3566,7 +3746,7 @@ flip__B1_from_flip:
   // (byte) flip::dstIdx#5 = (byte) 15  // yby=coby1
   ldy #15
   jmp flip__B1
-flip__B1_from_B11:
+flip__B1_from_B8:
   // (byte) flip::r#2 = (byte) flip::r#1  // register copy 
   // (byte) flip::srcIdx#3 = (byte) flip::srcIdx#1  // register copy 
   // (byte) flip::dstIdx#5 = (byte) flip::dstIdx#2  // register copy 
@@ -3599,15 +3779,15 @@ flip__B2:
   // if((byte) flip::c#1!=(byte) 0) goto flip::@2  //  zpby1_neq_0_then_la1
   lda 103
   bne flip__B2_from_B2
-B11:
+B8:
   // (byte) flip::dstIdx#2 ← -- (byte) flip::dstIdx#1  //  yby=_dec_yby
   dey
   // (byte) flip::r#1 ← -- (byte) flip::r#2  //  zpby1=_dec_zpby1
   dec 104
   // if((byte) flip::r#1!=(byte) 0) goto flip::@1  //  zpby1_neq_0_then_la1
   lda 104
-  bne flip__B1_from_B11
-flip__B3_from_B11:
+  bne flip__B1_from_B8
+flip__B3_from_B8:
   // (byte) flip::i#2 = (byte) 0  // xby=coby1
   ldx #0
   jmp flip__B3
@@ -3644,7 +3824,7 @@ prepare__B1:
 prepare__Breturn:
   rts
 
-Removing instruction jmp B2
+Removing instruction jmp main__B2
 Removing instruction jmp plot__B1
 Removing instruction jmp plot__B2
 Removing instruction jmp flip__B1
@@ -3654,43 +3834,47 @@ Removing instruction jmp prepare__B1
 Succesful ASM optimization Pass4NextJumpElimination
 ASSEMBLER
 BBEGIN:
-  jsr prepare
-B2_from_BBEGIN:
-  // (byte) c#2 = (byte) 25  // xby=coby1
-  ldx #25
-  jmp B2
-B2_from_B20:
-  // (byte) c#2 = (byte) 25  // xby=coby1
-  ldx #25
-B2_from_B6:
-  // (byte) c#2 = (byte) c#1  // register copy 
-B2:
-B3:
-  // (byte~) $1 ← * (word) 53266  //  aby=_star_cowo1
-  lda 53266
-  // if((byte~) $1!=(byte) 254) goto @3  //  aby_neq_coby1_then_la1
-  cmp #254
-  bne B3
-B4:
-  // (byte~) $3 ← * (word) 53266  //  aby=_star_cowo1
-  lda 53266
-  // if((byte~) $3!=(byte) 255) goto @4  //  aby_neq_coby1_then_la1
-  cmp #255
-  bne B4
-B6:
-  // (byte) c#1 ← -- (byte) c#2  //  xby=_dec_xby
-  dex
-  // if((byte) c#1!=(byte) 0) goto @2  //  xby_neq_0_then_la1
-  cpx #0
-  bne B2_from_B6
-B7:
-  jsr flip
-B19:
-  jsr plot
-B20:
-  // if(true) goto @2  //  true_then_la1
-  jmp B2_from_B20
+  jsr main
 BEND:
+main:
+  jsr prepare
+main__B2_from_main:
+  // (byte) main::c#2 = (byte) 25  // xby=coby1
+  ldx #25
+  jmp main__B2
+main__B2_from_B18:
+  // (byte) main::c#2 = (byte) 25  // xby=coby1
+  ldx #25
+main__B2_from_B2:
+  // (byte) main::c#2 = (byte) main::c#1  // register copy 
+main__B2:
+main__B3:
+  // (byte~) main::$1 ← * (word) 53266  //  aby=_star_cowo1
+  lda 53266
+  // if((byte~) main::$1!=(byte) 254) goto main::@3  //  aby_neq_coby1_then_la1
+  cmp #254
+  bne main__main__B3
+main__B4:
+  // (byte~) main::$3 ← * (word) 53266  //  aby=_star_cowo1
+  lda 53266
+  // if((byte~) main::$3!=(byte) 255) goto main::@4  //  aby_neq_coby1_then_la1
+  cmp #255
+  bne main__main__B4
+B2:
+  // (byte) main::c#1 ← -- (byte) main::c#2  //  xby=_dec_xby
+  dex
+  // if((byte) main::c#1!=(byte) 0) goto main::@2  //  xby_neq_0_then_la1
+  cpx #0
+  bne main__B2_from_B2
+B3:
+  jsr flip
+B17:
+  jsr plot
+B18:
+  // if(true) goto main::@2  //  true_then_la1
+  jmp main__B2_from_B18
+main__Breturn:
+  rts
 plot:
 plot__B1_from_plot:
   // (byte) plot::y#2 = (byte) 16  // zpby1=coby1
@@ -3703,7 +3887,7 @@ plot__B1_from_plot:
   sta 101
   lda #>1236
   sta 101+1
-plot__B1_from_B15:
+plot__B1_from_B12:
   // (byte) plot::y#2 = (byte) plot::y#1  // register copy 
   // (byte) plot::i#3 = (byte) plot::i#1  // register copy 
   // (byte*) plot::line#2 = (byte*) plot::line#1  // register copy 
@@ -3727,7 +3911,7 @@ plot__B2:
   // if((byte) plot::x#1<(byte) 16) goto plot::@2  //  yby_lt_coby1_then_la1
   cpy #16
   bcc plot__B2_from_B2
-B15:
+B12:
   // (byte*) plot::line#1 ← (byte*) plot::line#2 + (byte) 40  //  zpptrby1=zpptrby1_plus_coby1
   lda 101
   clc
@@ -3740,7 +3924,7 @@ B15:
   dec 100
   // if((byte) plot::y#1!=(byte) 0) goto plot::@1  //  zpby1_neq_0_then_la1
   lda 100
-  bne plot__B1_from_B15
+  bne plot__B1_from_B12
 plot__Breturn:
   rts
 flip:
@@ -3752,7 +3936,7 @@ flip__B1_from_flip:
   ldx #0
   // (byte) flip::dstIdx#5 = (byte) 15  // yby=coby1
   ldy #15
-flip__B1_from_B11:
+flip__B1_from_B8:
   // (byte) flip::r#2 = (byte) flip::r#1  // register copy 
   // (byte) flip::srcIdx#3 = (byte) flip::srcIdx#1  // register copy 
   // (byte) flip::dstIdx#5 = (byte) flip::dstIdx#2  // register copy 
@@ -3784,15 +3968,271 @@ flip__B2:
   // if((byte) flip::c#1!=(byte) 0) goto flip::@2  //  zpby1_neq_0_then_la1
   lda 103
   bne flip__B2_from_B2
-B11:
+B8:
   // (byte) flip::dstIdx#2 ← -- (byte) flip::dstIdx#1  //  yby=_dec_yby
   dey
   // (byte) flip::r#1 ← -- (byte) flip::r#2  //  zpby1=_dec_zpby1
   dec 104
   // if((byte) flip::r#1!=(byte) 0) goto flip::@1  //  zpby1_neq_0_then_la1
   lda 104
-  bne flip__B1_from_B11
-flip__B3_from_B11:
+  bne flip__B1_from_B8
+flip__B3_from_B8:
+  // (byte) flip::i#2 = (byte) 0  // xby=coby1
+  ldx #0
+flip__B3_from_B3:
+  // (byte) flip::i#2 = (byte) flip::i#1  // register copy 
+flip__B3:
+  // (byte~) flip::$4 ← (word) 4352 *idx (byte) flip::i#2  //  aby=cowo1_staridx_xby
+  lda 4352,x
+  // *((word) 4096 + (byte) flip::i#2) ← (byte~) flip::$4  //  ptr_cowo1_xby=aby
+  sta 4096,x
+  // (byte) flip::i#1 ← ++ (byte) flip::i#2  //  xby=_inc_xby
+  inx
+  // if((byte) flip::i#1!=(byte) 0) goto flip::@3  //  xby_neq_0_then_la1
+  cpx #0
+  bne flip__B3_from_B3
+flip__Breturn:
+  rts
+prepare:
+prepare__B1_from_prepare:
+  // (byte) prepare::i#2 = (byte) 0  // xby=coby1
+  ldx #0
+prepare__B1_from_B1:
+  // (byte) prepare::i#2 = (byte) prepare::i#1  // register copy 
+prepare__B1:
+  // *((word) 4096 + (byte) prepare::i#2) ← (byte) prepare::i#2  //  ptr_cowo1_xby=xby
+  txa
+  sta 4096,x
+  // (byte) prepare::i#1 ← ++ (byte) prepare::i#2  //  xby=_inc_xby
+  inx
+  // if((byte) prepare::i#1!=(byte) 0) goto prepare::@1  //  xby_neq_0_then_la1
+  cpx #0
+  bne prepare__B1_from_B1
+prepare__Breturn:
+  rts
+
+FINAL SYMBOL TABLE
+(label) @12
+(label) @17
+(label) @18
+(label) @2
+(label) @3
+(label) @8
+(label) @BEGIN
+(label) @END
+(byte*) RASTER
+(byte[1000]) SCREEN
+(byte[256]) buffer1
+(byte[256]) buffer2
+(void()) flip()
+(byte~) flip::$0 reg byte a
+(byte~) flip::$4 reg byte a
+(label) flip::@1
+(label) flip::@2
+(label) flip::@3
+(label) flip::@return
+(byte) flip::c
+(byte) flip::c#1 zp byte:103
+(byte) flip::c#2 zp byte:103
+(byte) flip::dstIdx
+(byte) flip::dstIdx#1 reg byte y
+(byte) flip::dstIdx#2 reg byte y
+(byte) flip::dstIdx#3 reg byte y
+(byte) flip::dstIdx#5 reg byte y
+(byte) flip::i
+(byte) flip::i#1 reg byte x
+(byte) flip::i#2 reg byte x
+(byte) flip::r
+(byte) flip::r#1 zp byte:104
+(byte) flip::r#2 zp byte:104
+(byte) flip::srcIdx
+(byte) flip::srcIdx#1 reg byte x
+(byte) flip::srcIdx#2 reg byte x
+(byte) flip::srcIdx#3 reg byte x
+
+(void()) main()
+(byte~) main::$1 reg byte a
+(byte~) main::$3 reg byte a
+(label) main::@2
+(label) main::@3
+(label) main::@4
+(label) main::@return
+(byte) main::c
+(byte) main::c#1 reg byte x
+(byte) main::c#2 reg byte x
+
+(void()) plot()
+(byte~) plot::$3 reg byte a
+(label) plot::@1
+(label) plot::@2
+(label) plot::@return
+(byte) plot::i
+(byte) plot::i#1 reg byte x
+(byte) plot::i#2 reg byte x
+(byte) plot::i#3 reg byte x
+(byte*) plot::line
+(byte*) plot::line#1 zp ptr byte:101
+(byte*) plot::line#2 zp ptr byte:101
+(byte) plot::x
+(byte) plot::x#1 reg byte y
+(byte) plot::x#2 reg byte y
+(byte) plot::y
+(byte) plot::y#1 zp byte:100
+(byte) plot::y#2 zp byte:100
+
+(void()) prepare()
+(label) prepare::@1
+(label) prepare::@return
+(byte) prepare::i
+(byte) prepare::i#1 reg byte x
+(byte) prepare::i#2 reg byte x
+
+
+FINAL CODE
+BBEGIN:
+  jsr main
+BEND:
+main:
+  jsr prepare
+main__B2_from_main:
+  // (byte) main::c#2 = (byte) 25  // xby=coby1
+  ldx #25
+  jmp main__B2
+main__B2_from_B18:
+  // (byte) main::c#2 = (byte) 25  // xby=coby1
+  ldx #25
+main__B2_from_B2:
+  // (byte) main::c#2 = (byte) main::c#1  // register copy 
+main__B2:
+main__B3:
+  // (byte~) main::$1 ← * (word) 53266  //  aby=_star_cowo1
+  lda 53266
+  // if((byte~) main::$1!=(byte) 254) goto main::@3  //  aby_neq_coby1_then_la1
+  cmp #254
+  bne main__main__B3
+main__B4:
+  // (byte~) main::$3 ← * (word) 53266  //  aby=_star_cowo1
+  lda 53266
+  // if((byte~) main::$3!=(byte) 255) goto main::@4  //  aby_neq_coby1_then_la1
+  cmp #255
+  bne main__main__B4
+B2:
+  // (byte) main::c#1 ← -- (byte) main::c#2  //  xby=_dec_xby
+  dex
+  // if((byte) main::c#1!=(byte) 0) goto main::@2  //  xby_neq_0_then_la1
+  cpx #0
+  bne main__B2_from_B2
+B3:
+  jsr flip
+B17:
+  jsr plot
+B18:
+  // if(true) goto main::@2  //  true_then_la1
+  jmp main__B2_from_B18
+main__Breturn:
+  rts
+plot:
+plot__B1_from_plot:
+  // (byte) plot::y#2 = (byte) 16  // zpby1=coby1
+  lda #16
+  sta 100
+  // (byte) plot::i#3 = (byte) 0  // xby=coby1
+  ldx #0
+  // (byte*) plot::line#2 = (word) 1236  // zpptrby1=cowo1
+  lda #<1236
+  sta 101
+  lda #>1236
+  sta 101+1
+plot__B1_from_B12:
+  // (byte) plot::y#2 = (byte) plot::y#1  // register copy 
+  // (byte) plot::i#3 = (byte) plot::i#1  // register copy 
+  // (byte*) plot::line#2 = (byte*) plot::line#1  // register copy 
+plot__B1:
+plot__B2_from_B1:
+  // (byte) plot::x#2 = (byte) 0  // yby=coby1
+  ldy #0
+  // (byte) plot::i#2 = (byte) plot::i#3  // register copy 
+plot__B2_from_B2:
+  // (byte) plot::x#2 = (byte) plot::x#1  // register copy 
+  // (byte) plot::i#2 = (byte) plot::i#1  // register copy 
+plot__B2:
+  // (byte~) plot::$3 ← (word) 4096 *idx (byte) plot::i#2  //  aby=cowo1_staridx_xby
+  lda 4096,x
+  // *((byte*) plot::line#2 + (byte) plot::x#2) ← (byte~) plot::$3  //  ptr_zpptrby1_yby=aby
+  sta (101),y
+  // (byte) plot::i#1 ← ++ (byte) plot::i#2  //  xby=_inc_xby
+  inx
+  // (byte) plot::x#1 ← ++ (byte) plot::x#2  //  yby=_inc_yby
+  iny
+  // if((byte) plot::x#1<(byte) 16) goto plot::@2  //  yby_lt_coby1_then_la1
+  cpy #16
+  bcc plot__B2_from_B2
+B12:
+  // (byte*) plot::line#1 ← (byte*) plot::line#2 + (byte) 40  //  zpptrby1=zpptrby1_plus_coby1
+  lda 101
+  clc
+  adc #40
+  sta 101
+  bcc !+
+  inc 101+1
+!:
+  // (byte) plot::y#1 ← -- (byte) plot::y#2  //  zpby1=_dec_zpby1
+  dec 100
+  // if((byte) plot::y#1!=(byte) 0) goto plot::@1  //  zpby1_neq_0_then_la1
+  lda 100
+  bne plot__B1_from_B12
+plot__Breturn:
+  rts
+flip:
+flip__B1_from_flip:
+  // (byte) flip::r#2 = (byte) 16  // zpby1=coby1
+  lda #16
+  sta 104
+  // (byte) flip::srcIdx#3 = (byte) 0  // xby=coby1
+  ldx #0
+  // (byte) flip::dstIdx#5 = (byte) 15  // yby=coby1
+  ldy #15
+flip__B1_from_B8:
+  // (byte) flip::r#2 = (byte) flip::r#1  // register copy 
+  // (byte) flip::srcIdx#3 = (byte) flip::srcIdx#1  // register copy 
+  // (byte) flip::dstIdx#5 = (byte) flip::dstIdx#2  // register copy 
+flip__B1:
+flip__B2_from_B1:
+  // (byte) flip::c#2 = (byte) 16  // zpby1=coby1
+  lda #16
+  sta 103
+  // (byte) flip::dstIdx#3 = (byte) flip::dstIdx#5  // register copy 
+  // (byte) flip::srcIdx#2 = (byte) flip::srcIdx#3  // register copy 
+flip__B2_from_B2:
+  // (byte) flip::c#2 = (byte) flip::c#1  // register copy 
+  // (byte) flip::dstIdx#3 = (byte) flip::dstIdx#1  // register copy 
+  // (byte) flip::srcIdx#2 = (byte) flip::srcIdx#1  // register copy 
+flip__B2:
+  // (byte~) flip::$0 ← (word) 4096 *idx (byte) flip::srcIdx#2  //  aby=cowo1_staridx_xby
+  lda 4096,x
+  // *((word) 4352 + (byte) flip::dstIdx#3) ← (byte~) flip::$0  //  ptr_cowo1_yby=aby
+  sta 4352,y
+  // (byte) flip::srcIdx#1 ← ++ (byte) flip::srcIdx#2  //  xby=_inc_xby
+  inx
+  // (byte) flip::dstIdx#1 ← (byte) flip::dstIdx#3 + (byte) 16  //  yby=yby_plus_coby1
+  tya
+  clc
+  adc #16
+  tay
+  // (byte) flip::c#1 ← -- (byte) flip::c#2  //  zpby1=_dec_zpby1
+  dec 103
+  // if((byte) flip::c#1!=(byte) 0) goto flip::@2  //  zpby1_neq_0_then_la1
+  lda 103
+  bne flip__B2_from_B2
+B8:
+  // (byte) flip::dstIdx#2 ← -- (byte) flip::dstIdx#1  //  yby=_dec_yby
+  dey
+  // (byte) flip::r#1 ← -- (byte) flip::r#2  //  zpby1=_dec_zpby1
+  dec 104
+  // if((byte) flip::r#1!=(byte) 0) goto flip::@1  //  zpby1_neq_0_then_la1
+  lda 104
+  bne flip__B1_from_B8
+flip__B3_from_B8:
   // (byte) flip::i#2 = (byte) 0  // xby=coby1
   ldx #0
 flip__B3_from_B3:
diff --git a/src/dk/camelot64/kickc/test/ref/flipper-rex2.sym b/src/dk/camelot64/kickc/test/ref/flipper-rex2.sym
index 73cc87f2a..44c71a0cf 100644
--- a/src/dk/camelot64/kickc/test/ref/flipper-rex2.sym
+++ b/src/dk/camelot64/kickc/test/ref/flipper-rex2.sym
@@ -1,23 +1,15 @@
-(byte~) $1 reg byte a
-(byte~) $3 reg byte a
-(label) @11
-(label) @15
-(label) @19
+(label) @12
+(label) @17
+(label) @18
 (label) @2
-(label) @20
 (label) @3
-(label) @4
-(label) @6
-(label) @7
+(label) @8
 (label) @BEGIN
 (label) @END
 (byte*) RASTER
 (byte[1000]) SCREEN
 (byte[256]) buffer1
 (byte[256]) buffer2
-(byte) c
-(byte) c#1 reg byte x
-(byte) c#2 reg byte x
 (void()) flip()
 (byte~) flip::$0 reg byte a
 (byte~) flip::$4 reg byte a
@@ -44,6 +36,17 @@
 (byte) flip::srcIdx#2 reg byte x
 (byte) flip::srcIdx#3 reg byte x
 
+(void()) main()
+(byte~) main::$1 reg byte a
+(byte~) main::$3 reg byte a
+(label) main::@2
+(label) main::@3
+(label) main::@4
+(label) main::@return
+(byte) main::c
+(byte) main::c#1 reg byte x
+(byte) main::c#2 reg byte x
+
 (void()) plot()
 (byte~) plot::$3 reg byte a
 (label) plot::@1