Added boolean type variables & fragments. Lots of missing fragments. Inlining any booleans possible will improve performance. Closes #86

src/main/java/dk/camelot64/kickc/fragment/AsmFragmentInstanceSpec.java

@@ -303,6 +303,8 @@ public class AsmFragmentInstanceSpec {
          return "vds";
       } else if(SymbolType.STRING.equals(type)) {
          return "pbu";
+      } else if(SymbolType.BOOLEAN.equals(type)) {
+         return "vbo";
       } else if(type instanceof SymbolTypePointer) {
          SymbolType elementType = ((SymbolTypePointer) type).getElementType();
          if(SymbolType.isByte(elementType)) {
@@ -330,6 +332,7 @@ public class AsmFragmentInstanceSpec {
     */
    private String getRegisterName(Registers.Register register) {
       if(
+            Registers.RegisterType.ZP_BOOL.equals(register.getType()) ||
                   Registers.RegisterType.ZP_BYTE.equals(register.getType()) ||
                   Registers.RegisterType.ZP_WORD.equals(register.getType()) ||
                   Registers.RegisterType.ZP_DWORD.equals(register.getType())

src/main/java/dk/camelot64/kickc/fragment/asm/vboaa=vboaa_or_vboz1.asm

@@ -0,0 +1 @@
+ora {z1}

src/main/java/dk/camelot64/kickc/fragment/asm/vboaa=vboz1.asm

@@ -0,0 +1 @@
+lda {z1}

src/main/java/dk/camelot64/kickc/fragment/asm/vboaa=vbuaa_eq_vbuc1.asm

@@ -0,0 +1,5 @@
+cmp #{c1}
+beq !+
+lda #1
+!:
+eor #1

src/main/java/dk/camelot64/kickc/fragment/asm/vboaa=vbuaa_neq_vbuc1.asm

@@ -0,0 +1,4 @@
+cmp #{c1}
+beq !+
+lda #1
+!:

src/main/java/dk/camelot64/kickc/fragment/asm/vboaa=vbuxx_eq_vbuc1.asm

@@ -0,0 +1,5 @@
+cpx #{c1}
+beq !+
+lda #1
+!:
+eor #1

src/main/java/dk/camelot64/kickc/fragment/asm/vboaa=vbuxx_neq_vbuc1.asm

@@ -0,0 +1,4 @@
+cpx #{c1}
+beq !+
+lda #1
+!:

src/main/java/dk/camelot64/kickc/fragment/asm/vboaa=vbuyy_eq_vbuc1.asm

@@ -0,0 +1,5 @@
+cpy #{c1}
+beq !+
+lda #1
+!:
+eor #1

src/main/java/dk/camelot64/kickc/fragment/asm/vboaa=vbuyy_neq_vbuc1.asm

@@ -0,0 +1,4 @@
+cpy #{c1}
+beq !+
+lda #1
+!:

src/main/java/dk/camelot64/kickc/fragment/asm/vboaa_then_la1.asm

@@ -0,0 +1,2 @@
+cmp #0
+bne {la1}

src/main/java/dk/camelot64/kickc/fragment/asm/vboxx=vboz1.asm

@@ -0,0 +1 @@
+ldx {z1}

src/main/java/dk/camelot64/kickc/fragment/asm/vboxx_then_la1.asm

@@ -0,0 +1,2 @@
+cpx #0
+bne {la1}

src/main/java/dk/camelot64/kickc/fragment/asm/vboyy=vboz1.asm

@@ -0,0 +1 @@
+ldy {z1}

src/main/java/dk/camelot64/kickc/fragment/asm/vboyy_then_la1.asm

@@ -0,0 +1,2 @@
+cpy #0
+bne {la1}

src/main/java/dk/camelot64/kickc/fragment/asm/vboz1=vboaa.asm

@@ -0,0 +1 @@
+sta {z1}

src/main/java/dk/camelot64/kickc/passes/Pass4RegisterUpliftPotentialInitialize.java

@@ -53,6 +53,9 @@ public class Pass4RegisterUpliftPotentialInitialize extends Pass2Base {
                potentials.add(Registers.getRegisterX());
                potentials.add(Registers.getRegisterY());
             }
+            if(registerType.equals(Registers.RegisterType.ZP_BOOL) && !varRefExtracted(equivalenceClass)) {
+               potentials.add(Registers.getRegisterA());
+            }
             registerPotentials.setPotentialRegisters(equivalenceClass, potentials);
          }
       }

src/test/java/dk/camelot64/kickc/test/TestPrograms.java

@@ -99,17 +99,26 @@ public class TestPrograms {
       compileAndCompare("const-condition");
    }
 
-
    @Test
    public void testBoolConst() throws IOException, URISyntaxException {
       compileAndCompare("bool-const");
    }
 
+   @Test
+   public void testBoolIfs() throws IOException, URISyntaxException {
+      compileAndCompare("bool-ifs");
+   }
+
    @Test
    public void testBoolVars() throws IOException, URISyntaxException {
       compileAndCompare("bool-vars");
    }
 
+   @Test
+   public void testBoolFunction() throws IOException, URISyntaxException {
+      compileAndCompare("bool-function");
+   }
+
    @Test
    public void testC64DtvBlitterMin() throws IOException, URISyntaxException {
       compileAndCompare("c64dtv-blittermin");

src/test/java/dk/camelot64/kickc/test/kc/bool-function.kc

@@ -0,0 +1,18 @@
+// Test a function taking boolean parameter and returning boolean result
+
+void main() {
+    byte* screen = $400;
+    for(byte i: 0..100) {
+        if( isSet(i, (i&1)==0)) {
+            screen[i] = '*';
+        } else {
+            screen[i] = ' ';
+        }
+    }
+}
+
+// Determine whether to set a char to '*.
+// Returns true if i&8!=0 or b=true
+boolean isSet(byte i, boolean b) {
+    return b || ((i&8)!=0);
+}

src/test/java/dk/camelot64/kickc/test/kc/bool-ifs.kc

@@ -0,0 +1,52 @@
+// A test of boolean conditions using && || and !
+
+void main() {
+    bool_and();
+    bool_or();
+    bool_not();
+    bool_complex();
+}
+
+void bool_and() {
+    const byte* screen = $400;
+    for( byte i : 0..20) {
+        if( (i<10) && ((i&1)==0) ) {
+            screen[i] = '*';
+        } else {
+            screen[i] = ' ';
+        }
+    }
+}
+
+void bool_or() {
+    const byte* screen = $428;
+    for( byte i : 0..20) {
+        if( (i<10) || ((i&1)==0) ) {
+            screen[i] = '*';
+        } else {
+            screen[i] = ' ';
+        }
+    }
+}
+
+void bool_not() {
+    const byte* screen = $450;
+    for( byte i : 0..20) {
+        if( !((i<10) || (i&1)==0))  {
+            screen[i] = '*';
+        } else {
+            screen[i] = ' ';
+        }
+    }
+}
+
+void bool_complex() {
+    const byte* screen = $478;
+    for( byte i : 0..20) {
+        if( ((i<10) && (i&1)==0) || !((i<10) || (i&1)==0) ) {
+            screen[i] = '*';
+        } else {
+            screen[i] = ' ';
+        }
+    }
+}

src/test/java/dk/camelot64/kickc/test/kc/bool-vars.kc

@@ -10,7 +10,10 @@ void main() {
 void bool_and() {
     const byte* screen = $400;
     for( byte i : 0..20) {
-        if( (i<10) && ((i&1)==0) ) {
+        boolean o1 = (i<10);
+        boolean o2 = ((i&1)==0);
+        boolean o3 = o1 && o2;
+        if(o3) {
             screen[i] = '*';
         } else {
             screen[i] = ' ';
@@ -21,7 +24,10 @@ void bool_and() {
 void bool_or() {
     const byte* screen = $428;
     for( byte i : 0..20) {
-        if( (i<10) || ((i&1)==0) ) {
+        boolean o1 = (i<10);
+        boolean o2 = ((i&1)==0);
+        boolean o3 = o1 || o2;
+        if(o3) {
             screen[i] = '*';
         } else {
             screen[i] = ' ';
@@ -32,8 +38,10 @@ void bool_or() {
 void bool_not() {
     const byte* screen = $450;
     for( byte i : 0..20) {
-        boolean o1 = (i&1)==0;
-        if( !((i<10) || ((i&1)==0)) ) {
+        boolean o1 = (i<10);
+        boolean o2 = (i&1)==0;
+        boolean o3 = !( o1 || o2);
+        if(o3)  {
             screen[i] = '*';
         } else {
             screen[i] = ' ';
@@ -44,8 +52,12 @@ void bool_not() {
 void bool_complex() {
     const byte* screen = $478;
     for( byte i : 0..20) {
-        boolean o1 = (i&1)==0;
-        if( ((i<10) && ((i&1)==0)) || !((i<10) || ((i&1)==0)) ) {
+        boolean o1 = (i<10);
+        boolean o2 = (i&1)==0;
+        boolean o3 = (o1 && o2);
+        boolean o4 = !(o1 || o2);
+        boolean o5 = o3 || o4;
+        if( o5 ) {
             screen[i] = '*';
         } else {
             screen[i] = ' ';

src/test/java/dk/camelot64/kickc/test/ref/bool-function.asm

@@ -0,0 +1,42 @@
+.pc = $801 "Basic"
+:BasicUpstart(main)
+.pc = $80d "Program"
+  jsr main
+main: {
+    .label screen = $400
+    ldx #0
+  b1:
+    txa
+    and #1
+    cmp #0
+    beq !+
+    lda #1
+  !:
+    eor #1
+    sta isSet.b
+    jsr isSet
+    cmp #0
+    bne b2
+    lda #' '
+    sta screen,x
+  b3:
+    inx
+    cpx #$65
+    bne b1
+    rts
+  b2:
+    lda #'*'
+    sta screen,x
+    jmp b3
+}
+isSet: {
+    .label b = 2
+    txa
+    and #8
+    cmp #0
+    beq !+
+    lda #1
+  !:
+    ora b
+    rts
+}

src/test/java/dk/camelot64/kickc/test/ref/bool-function.cfg

@@ -0,0 +1,45 @@
+@begin: scope:[]  from
+  [0] phi() [ ] ( )
+  to:@2
+@2: scope:[]  from @begin
+  [1] phi() [ ] ( )
+  [2] call main param-assignment [ ] ( )
+  to:@end
+@end: scope:[]  from @2
+  [3] phi() [ ] ( )
+main: scope:[main]  from @2
+  [4] phi() [ ] ( main:2 [ ] )
+  to:main::@1
+main::@1: scope:[main]  from main main::@3
+  [5] (byte) main::i#2 ← phi( main/(byte/signed byte/word/signed word/dword/signed dword) 0 main::@3/(byte) main::i#1 ) [ main::i#2 ] ( main:2 [ main::i#2 ] )
+  [6] (byte~) main::$0 ← (byte) main::i#2 & (byte/signed byte/word/signed word/dword/signed dword) 1 [ main::i#2 main::$0 ] ( main:2 [ main::i#2 main::$0 ] )
+  [7] (boolean) isSet::b#0 ← (byte~) main::$0 == (byte/signed byte/word/signed word/dword/signed dword) 0 [ main::i#2 isSet::b#0 ] ( main:2 [ main::i#2 isSet::b#0 ] )
+  [8] (byte) isSet::i#0 ← (byte) main::i#2 [ main::i#2 isSet::b#0 isSet::i#0 ] ( main:2 [ main::i#2 isSet::b#0 isSet::i#0 ] )
+  [9] call isSet param-assignment [ main::i#2 isSet::return#1 ] ( main:2 [ main::i#2 isSet::return#1 ] )
+  [10] (boolean) isSet::return#0 ← (boolean) isSet::return#1 [ main::i#2 isSet::return#0 ] ( main:2 [ main::i#2 isSet::return#0 ] )
+  to:main::@7
+main::@7: scope:[main]  from main::@1
+  [11] (boolean~) main::$2 ← (boolean) isSet::return#0 [ main::i#2 main::$2 ] ( main:2 [ main::i#2 main::$2 ] )
+  [12] if((boolean~) main::$2) goto main::@2 [ main::i#2 ] ( main:2 [ main::i#2 ] )
+  to:main::@4
+main::@4: scope:[main]  from main::@7
+  [13] *((const byte*) main::screen#0 + (byte) main::i#2) ← (byte) ' ' [ main::i#2 ] ( main:2 [ main::i#2 ] )
+  to:main::@3
+main::@3: scope:[main]  from main::@2 main::@4
+  [14] (byte) main::i#1 ← ++ (byte) main::i#2 [ main::i#1 ] ( main:2 [ main::i#1 ] )
+  [15] if((byte) main::i#1!=(byte/signed byte/word/signed word/dword/signed dword) 101) goto main::@1 [ main::i#1 ] ( main:2 [ main::i#1 ] )
+  to:main::@return
+main::@return: scope:[main]  from main::@3
+  [16] return  [ ] ( main:2 [ ] )
+  to:@return
+main::@2: scope:[main]  from main::@7
+  [17] *((const byte*) main::screen#0 + (byte) main::i#2) ← (byte) '*' [ main::i#2 ] ( main:2 [ main::i#2 ] )
+  to:main::@3
+isSet: scope:[isSet]  from main::@1
+  [18] (byte~) isSet::$0 ← (byte) isSet::i#0 & (byte/signed byte/word/signed word/dword/signed dword) 8 [ isSet::b#0 isSet::$0 ] ( main:2::isSet:9 [ main::i#2 isSet::b#0 isSet::$0 ] )
+  [19] (boolean~) isSet::$1 ← (byte~) isSet::$0 != (byte/signed byte/word/signed word/dword/signed dword) 0 [ isSet::b#0 isSet::$1 ] ( main:2::isSet:9 [ main::i#2 isSet::b#0 isSet::$1 ] )
+  [20] (boolean) isSet::return#1 ← (boolean) isSet::b#0 || (boolean~) isSet::$1 [ isSet::return#1 ] ( main:2::isSet:9 [ main::i#2 isSet::return#1 ] )
+  to:isSet::@return
+isSet::@return: scope:[isSet]  from isSet
+  [21] return  [ isSet::return#1 ] ( main:2::isSet:9 [ main::i#2 isSet::return#1 ] )
+  to:@return

src/test/java/dk/camelot64/kickc/test/ref/bool-function.log

@@ -0,0 +1,854 @@
+PARSING src/test/java/dk/camelot64/kickc/test/kc/bool-function.kc
+// Test a function taking boolean parameter and returning boolean result
+
+void main() {
+    byte* screen = $400;
+    for(byte i: 0..100) {
+        if( isSet(i, (i&1)==0)) {
+            screen[i] = '*';
+        } else {
+            screen[i] = ' ';
+        }
+    }
+}
+
+// Determine whether to set a char to '*.
+// Returns true if i&8!=0 or b=true
+boolean isSet(byte i, boolean b) {
+    return b || ((i&8)!=0);
+}
+SYMBOLS
+(label) @1
+(label) @2
+(label) @begin
+(label) @end
+(boolean()) isSet((byte) isSet::i , (boolean) isSet::b)
+(byte~) isSet::$0
+(boolean~) isSet::$1
+(boolean~) isSet::$2
+(label) isSet::@1
+(label) isSet::@return
+(boolean) isSet::b
+(byte) isSet::i
+(boolean) isSet::return
+(void()) main()
+(byte~) main::$0
+(boolean~) main::$1
+(boolean~) main::$2
+(boolean~) main::$3
+(label) main::@1
+(label) main::@2
+(label) main::@3
+(label) main::@4
+(label) main::@5
+(label) main::@6
+(label) main::@return
+(byte) main::i
+(byte*) main::screen
+
+Promoting word/signed word/dword/signed dword to byte* in main::screen ← ((byte*)) 1024
+INITIAL CONTROL FLOW GRAPH
+@begin: scope:[]  from
+  to:@1
+main: scope:[main]  from
+  (byte*) main::screen ← ((byte*)) (word/signed word/dword/signed dword) 1024
+  (byte) main::i ← (byte/signed byte/word/signed word/dword/signed dword) 0
+  to:main::@1
+main::@1: scope:[main]  from main main::@3
+  (byte~) main::$0 ← (byte) main::i & (byte/signed byte/word/signed word/dword/signed dword) 1
+  (boolean~) main::$1 ← (byte~) main::$0 == (byte/signed byte/word/signed word/dword/signed dword) 0
+  (boolean~) main::$2 ← call isSet (byte) main::i (boolean~) main::$1 
+  if((boolean~) main::$2) goto main::@2
+  to:main::@4
+main::@2: scope:[main]  from main::@1 main::@5
+  *((byte*) main::screen + (byte) main::i) ← (byte) '*'
+  to:main::@3
+main::@4: scope:[main]  from main::@1
+  *((byte*) main::screen + (byte) main::i) ← (byte) ' '
+  to:main::@3
+main::@3: scope:[main]  from main::@2 main::@4
+  (byte) main::i ← ++ (byte) main::i
+  (boolean~) main::$3 ← (byte) main::i != (byte/signed byte/word/signed word/dword/signed dword) 101
+  if((boolean~) main::$3) goto main::@1
+  to:main::@6
+main::@5: scope:[main]  from
+  to:main::@2
+main::@6: scope:[main]  from main::@3
+  to:main::@return
+main::@return: scope:[main]  from main::@6
+  return 
+  to:@return
+@1: scope:[]  from @begin
+  to:@2
+isSet: scope:[isSet]  from
+  (byte~) isSet::$0 ← (byte) isSet::i & (byte/signed byte/word/signed word/dword/signed dword) 8
+  (boolean~) isSet::$1 ← (byte~) isSet::$0 != (byte/signed byte/word/signed word/dword/signed dword) 0
+  (boolean~) isSet::$2 ← (boolean) isSet::b || (boolean~) isSet::$1
+  (boolean) isSet::return ← (boolean~) isSet::$2
+  to:isSet::@return
+isSet::@return: scope:[isSet]  from isSet isSet::@1
+  (boolean) isSet::return ← (boolean) isSet::return
+  return (boolean) isSet::return
+  to:@return
+isSet::@1: scope:[isSet]  from
+  to:isSet::@return
+@2: scope:[]  from @1
+  call main 
+  to:@end
+@end: scope:[]  from @2
+
+Removing empty block main::@5
+Removing empty block main::@6
+Removing empty block @1
+Removing empty block isSet::@1
+PROCEDURE MODIFY VARIABLE ANALYSIS
+
+Completing Phi functions...
+Completing Phi functions...
+Completing Phi functions...
+Completing Phi functions...
+
+CONTROL FLOW GRAPH SSA WITH ASSIGNMENT CALL & RETURN
+@begin: scope:[]  from
+  to:@2
+main: scope:[main]  from @2
+  (byte*) main::screen#0 ← ((byte*)) (word/signed word/dword/signed dword) 1024
+  (byte) main::i#0 ← (byte/signed byte/word/signed word/dword/signed dword) 0
+  to:main::@1
+main::@1: scope:[main]  from main main::@3
+  (byte*) main::screen#4 ← phi( main/(byte*) main::screen#0 main::@3/(byte*) main::screen#5 )
+  (byte) main::i#2 ← phi( main/(byte) main::i#0 main::@3/(byte) main::i#1 )
+  (byte~) main::$0 ← (byte) main::i#2 & (byte/signed byte/word/signed word/dword/signed dword) 1
+  (boolean~) main::$1 ← (byte~) main::$0 == (byte/signed byte/word/signed word/dword/signed dword) 0
+  (byte) isSet::i#0 ← (byte) main::i#2
+  (boolean) isSet::b#0 ← (boolean~) main::$1
+  call isSet param-assignment
+  (boolean) isSet::return#0 ← (boolean) isSet::return#2
+  to:main::@7
+main::@7: scope:[main]  from main::@1
+  (byte) main::i#6 ← phi( main::@1/(byte) main::i#2 )
+  (byte*) main::screen#3 ← phi( main::@1/(byte*) main::screen#4 )
+  (boolean) isSet::return#3 ← phi( main::@1/(boolean) isSet::return#0 )
+  (boolean~) main::$2 ← (boolean) isSet::return#3
+  if((boolean~) main::$2) goto main::@2
+  to:main::@4
+main::@2: scope:[main]  from main::@7
+  (byte) main::i#3 ← phi( main::@7/(byte) main::i#6 )
+  (byte*) main::screen#1 ← phi( main::@7/(byte*) main::screen#3 )
+  *((byte*) main::screen#1 + (byte) main::i#3) ← (byte) '*'
+  to:main::@3
+main::@4: scope:[main]  from main::@7
+  (byte) main::i#4 ← phi( main::@7/(byte) main::i#6 )
+  (byte*) main::screen#2 ← phi( main::@7/(byte*) main::screen#3 )
+  *((byte*) main::screen#2 + (byte) main::i#4) ← (byte) ' '
+  to:main::@3
+main::@3: scope:[main]  from main::@2 main::@4
+  (byte*) main::screen#5 ← phi( main::@2/(byte*) main::screen#1 main::@4/(byte*) main::screen#2 )
+  (byte) main::i#5 ← phi( main::@2/(byte) main::i#3 main::@4/(byte) main::i#4 )
+  (byte) main::i#1 ← ++ (byte) main::i#5
+  (boolean~) main::$3 ← (byte) main::i#1 != (byte/signed byte/word/signed word/dword/signed dword) 101
+  if((boolean~) main::$3) goto main::@1
+  to:main::@return
+main::@return: scope:[main]  from main::@3
+  return 
+  to:@return
+isSet: scope:[isSet]  from main::@1
+  (boolean) isSet::b#1 ← phi( main::@1/(boolean) isSet::b#0 )
+  (byte) isSet::i#1 ← phi( main::@1/(byte) isSet::i#0 )
+  (byte~) isSet::$0 ← (byte) isSet::i#1 & (byte/signed byte/word/signed word/dword/signed dword) 8
+  (boolean~) isSet::$1 ← (byte~) isSet::$0 != (byte/signed byte/word/signed word/dword/signed dword) 0
+  (boolean~) isSet::$2 ← (boolean) isSet::b#1 || (boolean~) isSet::$1
+  (boolean) isSet::return#1 ← (boolean~) isSet::$2
+  to:isSet::@return
+isSet::@return: scope:[isSet]  from isSet
+  (boolean) isSet::return#4 ← phi( isSet/(boolean) isSet::return#1 )
+  (boolean) isSet::return#2 ← (boolean) isSet::return#4
+  return 
+  to:@return
+@2: scope:[]  from @begin
+  call main param-assignment
+  to:@3
+@3: scope:[]  from @2
+  to:@end
+@end: scope:[]  from @3
+
+SYMBOL TABLE SSA
+(label) @2
+(label) @3
+(label) @begin
+(label) @end
+(boolean()) isSet((byte) isSet::i , (boolean) isSet::b)
+(byte~) isSet::$0
+(boolean~) isSet::$1
+(boolean~) isSet::$2
+(label) isSet::@return
+(boolean) isSet::b
+(boolean) isSet::b#0
+(boolean) isSet::b#1
+(byte) isSet::i
+(byte) isSet::i#0
+(byte) isSet::i#1
+(boolean) isSet::return
+(boolean) isSet::return#0
+(boolean) isSet::return#1
+(boolean) isSet::return#2
+(boolean) isSet::return#3
+(boolean) isSet::return#4
+(void()) main()
+(byte~) main::$0
+(boolean~) main::$1
+(boolean~) main::$2
+(boolean~) main::$3
+(label) main::@1
+(label) main::@2
+(label) main::@3
+(label) main::@4
+(label) main::@7
+(label) main::@return
+(byte) main::i
+(byte) main::i#0
+(byte) main::i#1
+(byte) main::i#2
+(byte) main::i#3
+(byte) main::i#4
+(byte) main::i#5
+(byte) main::i#6
+(byte*) main::screen
+(byte*) main::screen#0
+(byte*) main::screen#1
+(byte*) main::screen#2
+(byte*) main::screen#3
+(byte*) main::screen#4
+(byte*) main::screen#5
+
+OPTIMIZING CONTROL FLOW GRAPH
+Culled Empty Block (label) @3
+Succesful SSA optimization Pass2CullEmptyBlocks
+Not aliassing across scopes: isSet::i#0 main::i#2
+Not aliassing across scopes: isSet::return#0 isSet::return#2
+Not aliassing across scopes: main::$2 isSet::return#3
+Not aliassing across scopes: isSet::i#1 isSet::i#0
+Not aliassing across scopes: isSet::b#1 isSet::b#0
+Alias (boolean) isSet::b#0 = (boolean~) main::$1 
+Alias (boolean) isSet::return#0 = (boolean) isSet::return#3 
+Alias (byte*) main::screen#1 = (byte*) main::screen#3 (byte*) main::screen#4 (byte*) main::screen#2 
+Alias (byte) main::i#2 = (byte) main::i#6 (byte) main::i#3 (byte) main::i#4 
+Alias (boolean) isSet::return#1 = (boolean~) isSet::$2 (boolean) isSet::return#4 (boolean) isSet::return#2 
+Succesful SSA optimization Pass2AliasElimination
+Not aliassing across scopes: isSet::i#0 main::i#2
+Not aliassing across scopes: isSet::return#0 isSet::return#1
+Not aliassing across scopes: main::$2 isSet::return#0
+Not aliassing across scopes: isSet::i#1 isSet::i#0
+Not aliassing across scopes: isSet::b#1 isSet::b#0
+Alias (byte) main::i#2 = (byte) main::i#5 
+Alias (byte*) main::screen#1 = (byte*) main::screen#5 
+Succesful SSA optimization Pass2AliasElimination
+Not aliassing across scopes: isSet::i#0 main::i#2
+Not aliassing across scopes: isSet::return#0 isSet::return#1
+Not aliassing across scopes: main::$2 isSet::return#0
+Not aliassing across scopes: isSet::i#1 isSet::i#0
+Not aliassing across scopes: isSet::b#1 isSet::b#0
+Self Phi Eliminated (byte*) main::screen#1
+Succesful SSA optimization Pass2SelfPhiElimination
+Redundant Phi (byte*) main::screen#1 (byte*) main::screen#0
+Redundant Phi (byte) isSet::i#1 (byte) isSet::i#0
+Redundant Phi (boolean) isSet::b#1 (boolean) isSet::b#0
+Succesful SSA optimization Pass2RedundantPhiElimination
+Simple Condition (boolean~) main::$3 if((byte) main::i#1!=(byte/signed byte/word/signed word/dword/signed dword) 101) goto main::@1
+Succesful SSA optimization Pass2ConditionalJumpSimplification
+Constant (const byte*) main::screen#0 = ((byte*))1024
+Constant (const byte) main::i#0 = 0
+Succesful SSA optimization Pass2ConstantIdentification
+Not aliassing across scopes: isSet::i#0 main::i#2
+Not aliassing across scopes: isSet::return#0 isSet::return#1
+Not aliassing across scopes: main::$2 isSet::return#0
+OPTIMIZING CONTROL FLOW GRAPH
+Inlining constant with var siblings (const byte) main::i#0
+Inlining constant with var siblings (const byte) main::i#0
+Constant inlined main::i#0 = (byte/signed byte/word/signed word/dword/signed dword) 0
+Succesful SSA optimization Pass2ConstantInlining
+Block Sequence Planned @begin @2 @end main main::@1 main::@7 main::@4 main::@3 main::@return main::@2 isSet isSet::@return 
+Added new block during phi lifting main::@8(between main::@3 and main::@1)
+Block Sequence Planned @begin @2 @end main main::@1 main::@7 main::@4 main::@3 main::@return main::@8 main::@2 isSet isSet::@return 
+Adding NOP phi() at start of @begin
+Adding NOP phi() at start of @2
+Adding NOP phi() at start of @end
+Adding NOP phi() at start of main
+CALL GRAPH
+Calls in [] to main:2 
+Calls in [main] to isSet:9 
+
+Propagating live ranges...
+Propagating live ranges...
+Propagating live ranges...
+Propagating live ranges...
+Propagating live ranges...
+Propagating live ranges...
+Created 1 initial phi equivalence classes
+Coalesced [17] main::i#7 ← main::i#1
+Coalesced down to 1 phi equivalence classes
+Culled Empty Block (label) main::@8
+Block Sequence Planned @begin @2 @end main main::@1 main::@7 main::@4 main::@3 main::@return main::@2 isSet isSet::@return 
+Adding NOP phi() at start of @begin
+Adding NOP phi() at start of @2
+Adding NOP phi() at start of @end
+Adding NOP phi() at start of main
+Propagating live ranges...
+Propagating live ranges...
+Propagating live ranges...
+Propagating live ranges...
+Propagating live ranges...
+Propagating live ranges...
+
+FINAL CONTROL FLOW GRAPH
+@begin: scope:[]  from
+  [0] phi() [ ] ( )
+  to:@2
+@2: scope:[]  from @begin
+  [1] phi() [ ] ( )
+  [2] call main param-assignment [ ] ( )
+  to:@end
+@end: scope:[]  from @2
+  [3] phi() [ ] ( )
+main: scope:[main]  from @2
+  [4] phi() [ ] ( main:2 [ ] )
+  to:main::@1
+main::@1: scope:[main]  from main main::@3
+  [5] (byte) main::i#2 ← phi( main/(byte/signed byte/word/signed word/dword/signed dword) 0 main::@3/(byte) main::i#1 ) [ main::i#2 ] ( main:2 [ main::i#2 ] )
+  [6] (byte~) main::$0 ← (byte) main::i#2 & (byte/signed byte/word/signed word/dword/signed dword) 1 [ main::i#2 main::$0 ] ( main:2 [ main::i#2 main::$0 ] )
+  [7] (boolean) isSet::b#0 ← (byte~) main::$0 == (byte/signed byte/word/signed word/dword/signed dword) 0 [ main::i#2 isSet::b#0 ] ( main:2 [ main::i#2 isSet::b#0 ] )
+  [8] (byte) isSet::i#0 ← (byte) main::i#2 [ main::i#2 isSet::b#0 isSet::i#0 ] ( main:2 [ main::i#2 isSet::b#0 isSet::i#0 ] )
+  [9] call isSet param-assignment [ main::i#2 isSet::return#1 ] ( main:2 [ main::i#2 isSet::return#1 ] )
+  [10] (boolean) isSet::return#0 ← (boolean) isSet::return#1 [ main::i#2 isSet::return#0 ] ( main:2 [ main::i#2 isSet::return#0 ] )
+  to:main::@7
+main::@7: scope:[main]  from main::@1
+  [11] (boolean~) main::$2 ← (boolean) isSet::return#0 [ main::i#2 main::$2 ] ( main:2 [ main::i#2 main::$2 ] )
+  [12] if((boolean~) main::$2) goto main::@2 [ main::i#2 ] ( main:2 [ main::i#2 ] )
+  to:main::@4
+main::@4: scope:[main]  from main::@7
+  [13] *((const byte*) main::screen#0 + (byte) main::i#2) ← (byte) ' ' [ main::i#2 ] ( main:2 [ main::i#2 ] )
+  to:main::@3
+main::@3: scope:[main]  from main::@2 main::@4
+  [14] (byte) main::i#1 ← ++ (byte) main::i#2 [ main::i#1 ] ( main:2 [ main::i#1 ] )
+  [15] if((byte) main::i#1!=(byte/signed byte/word/signed word/dword/signed dword) 101) goto main::@1 [ main::i#1 ] ( main:2 [ main::i#1 ] )
+  to:main::@return
+main::@return: scope:[main]  from main::@3
+  [16] return  [ ] ( main:2 [ ] )
+  to:@return
+main::@2: scope:[main]  from main::@7
+  [17] *((const byte*) main::screen#0 + (byte) main::i#2) ← (byte) '*' [ main::i#2 ] ( main:2 [ main::i#2 ] )
+  to:main::@3
+isSet: scope:[isSet]  from main::@1
+  [18] (byte~) isSet::$0 ← (byte) isSet::i#0 & (byte/signed byte/word/signed word/dword/signed dword) 8 [ isSet::b#0 isSet::$0 ] ( main:2::isSet:9 [ main::i#2 isSet::b#0 isSet::$0 ] )
+  [19] (boolean~) isSet::$1 ← (byte~) isSet::$0 != (byte/signed byte/word/signed word/dword/signed dword) 0 [ isSet::b#0 isSet::$1 ] ( main:2::isSet:9 [ main::i#2 isSet::b#0 isSet::$1 ] )
+  [20] (boolean) isSet::return#1 ← (boolean) isSet::b#0 || (boolean~) isSet::$1 [ isSet::return#1 ] ( main:2::isSet:9 [ main::i#2 isSet::return#1 ] )
+  to:isSet::@return
+isSet::@return: scope:[isSet]  from isSet
+  [21] return  [ isSet::return#1 ] ( main:2::isSet:9 [ main::i#2 isSet::return#1 ] )
+  to:@return
+
+DOMINATORS
+@begin dominated by  @begin 
+@2 dominated by  @2 @begin 
+@end dominated by  @2 @begin @end 
+main dominated by  @2 @begin main 
+main::@1 dominated by  @2 @begin main::@1 main 
+main::@7 dominated by  @2 main::@7 @begin main::@1 main 
+main::@4 dominated by  @2 main::@7 @begin main::@1 main main::@4 
+main::@3 dominated by  @2 main::@7 @begin main::@1 main main::@3 
+main::@return dominated by  main::@return @2 main::@7 @begin main::@1 main main::@3 
+main::@2 dominated by  @2 main::@7 @begin main::@1 main::@2 main 
+isSet dominated by  @2 @begin isSet main::@1 main 
+isSet::@return dominated by  @2 @begin isSet main::@1 isSet::@return main 
+
+NATURAL LOOPS
+Found back edge: Loop head: main::@1 tails: main::@3 blocks: null
+Populated: Loop head: main::@1 tails: main::@3 blocks: main::@3 main::@2 main::@4 main::@7 main::@1 
+Loop head: main::@1 tails: main::@3 blocks: main::@3 main::@2 main::@4 main::@7 main::@1 
+
+NATURAL LOOPS WITH DEPTH
+Found 0 loops in scope []
+Found 1 loops in scope [main]
+  Loop head: main::@1 tails: main::@3 blocks: main::@3 main::@2 main::@4 main::@7 main::@1 
+Found 0 loops in scope [isSet]
+Loop head: main::@1 tails: main::@3 blocks: main::@3 main::@2 main::@4 main::@7 main::@1  depth: 1
+
+
+VARIABLE REGISTER WEIGHTS
+(boolean()) isSet((byte) isSet::i , (boolean) isSet::b)
+(byte~) isSet::$0 4.0
+(boolean~) isSet::$1 4.0
+(boolean) isSet::b
+(boolean) isSet::b#0 3.25
+(byte) isSet::i
+(byte) isSet::i#0 13.0
+(boolean) isSet::return
+(boolean) isSet::return#0 22.0
+(boolean) isSet::return#1 4.333333333333333
+(void()) main()
+(byte~) main::$0 22.0
+(boolean~) main::$2 22.0
+(byte) main::i
+(byte) main::i#1 16.5
+(byte) main::i#2 6.6
+(byte*) main::screen
+
+Initial phi equivalence classes
+[ main::i#2 main::i#1 ]
+Added variable main::$0 to zero page equivalence class [ main::$0 ]
+Added variable isSet::b#0 to zero page equivalence class [ isSet::b#0 ]
+Added variable isSet::i#0 to zero page equivalence class [ isSet::i#0 ]
+Added variable isSet::return#0 to zero page equivalence class [ isSet::return#0 ]
+Added variable main::$2 to zero page equivalence class [ main::$2 ]
+Added variable isSet::$0 to zero page equivalence class [ isSet::$0 ]
+Added variable isSet::$1 to zero page equivalence class [ isSet::$1 ]
+Added variable isSet::return#1 to zero page equivalence class [ isSet::return#1 ]
+Complete equivalence classes
+[ main::i#2 main::i#1 ]
+[ main::$0 ]
+[ isSet::b#0 ]
+[ isSet::i#0 ]
+[ isSet::return#0 ]
+[ main::$2 ]
+[ isSet::$0 ]
+[ isSet::$1 ]
+[ isSet::return#1 ]
+Allocated zp ZP_BYTE:2 [ main::i#2 main::i#1 ]
+Allocated zp ZP_BYTE:3 [ main::$0 ]
+Allocated zp ZP_BOOL:4 [ isSet::b#0 ]
+Allocated zp ZP_BYTE:5 [ isSet::i#0 ]
+Allocated zp ZP_BOOL:6 [ isSet::return#0 ]
+Allocated zp ZP_BOOL:7 [ main::$2 ]
+Allocated zp ZP_BYTE:8 [ isSet::$0 ]
+Allocated zp ZP_BOOL:9 [ isSet::$1 ]
+Allocated zp ZP_BOOL:10 [ isSet::return#1 ]
+
+INITIAL ASM
+//SEG0 Basic Upstart
+.pc = $801 "Basic"
+:BasicUpstart(main)
+.pc = $80d "Program"
+//SEG1 Global Constants & labels
+//SEG2 @begin
+bbegin:
+//SEG3 [1] phi from @begin to @2 [phi:@begin->@2]
+b2_from_bbegin:
+  jmp b2
+//SEG4 @2
+b2:
+//SEG5 [2] call main param-assignment [ ] ( )
+//SEG6 [4] phi from @2 to main [phi:@2->main]
+main_from_b2:
+  jsr main
+//SEG7 [3] phi from @2 to @end [phi:@2->@end]
+bend_from_b2:
+  jmp bend
+//SEG8 @end
+bend:
+//SEG9 main
+main: {
+    .label screen = $400
+    .label _0 = 3
+    .label _2 = 7
+    .label i = 2
+  //SEG10 [5] phi from main to main::@1 [phi:main->main::@1]
+  b1_from_main:
+  //SEG11 [5] phi (byte) main::i#2 = (byte/signed byte/word/signed word/dword/signed dword) 0 [phi:main->main::@1#0] -- vbuz1=vbuc1 
+    lda #0
+    sta i
+    jmp b1
+  //SEG12 [5] phi from main::@3 to main::@1 [phi:main::@3->main::@1]
+  b1_from_b3:
+  //SEG13 [5] phi (byte) main::i#2 = (byte) main::i#1 [phi:main::@3->main::@1#0] -- register_copy 
+    jmp b1
+  //SEG14 main::@1
+  b1:
+  //SEG15 [6] (byte~) main::$0 ← (byte) main::i#2 & (byte/signed byte/word/signed word/dword/signed dword) 1 [ main::i#2 main::$0 ] ( main:2 [ main::i#2 main::$0 ] ) -- vbuz1=vbuz2_band_vbuc1 
+    lda #1
+    and i
+    sta _0
+  //SEG16 [7] (boolean) isSet::b#0 ← (byte~) main::$0 == (byte/signed byte/word/signed word/dword/signed dword) 0 [ main::i#2 isSet::b#0 ] ( main:2 [ main::i#2 isSet::b#0 ] ) -- vboz1=vbuz2_eq_vbuc1 
+    lda _0
+    cmp #0
+    beq !+
+    lda #1
+  !:
+    eor #1
+    sta isSet.b
+  //SEG17 [8] (byte) isSet::i#0 ← (byte) main::i#2 [ main::i#2 isSet::b#0 isSet::i#0 ] ( main:2 [ main::i#2 isSet::b#0 isSet::i#0 ] ) -- vbuz1=vbuz2 
+    lda i
+    sta isSet.i
+  //SEG18 [9] call isSet param-assignment [ main::i#2 isSet::return#1 ] ( main:2 [ main::i#2 isSet::return#1 ] )
+    jsr isSet
+  //SEG19 [10] (boolean) isSet::return#0 ← (boolean) isSet::return#1 [ main::i#2 isSet::return#0 ] ( main:2 [ main::i#2 isSet::return#0 ] ) -- vboz1=vboz2 
+    lda isSet.return_1
+    sta isSet.return
+    jmp b7
+  //SEG20 main::@7
+  b7:
+  //SEG21 [11] (boolean~) main::$2 ← (boolean) isSet::return#0 [ main::i#2 main::$2 ] ( main:2 [ main::i#2 main::$2 ] ) -- vboz1=vboz2 
+    lda isSet.return
+    sta _2
+  //SEG22 [12] if((boolean~) main::$2) goto main::@2 [ main::i#2 ] ( main:2 [ main::i#2 ] ) -- vboz1_then_la1 
+    lda _2
+    cmp #0
+    bne b2
+    jmp b4
+  //SEG23 main::@4
+  b4:
+  //SEG24 [13] *((const byte*) main::screen#0 + (byte) main::i#2) ← (byte) ' ' [ main::i#2 ] ( main:2 [ main::i#2 ] ) -- pbuc1_derefidx_vbuz1=vbuc2 
+    ldy i
+    lda #' '
+    sta screen,y
+    jmp b3
+  //SEG25 main::@3
+  b3:
+  //SEG26 [14] (byte) main::i#1 ← ++ (byte) main::i#2 [ main::i#1 ] ( main:2 [ main::i#1 ] ) -- vbuz1=_inc_vbuz1 
+    inc i
+  //SEG27 [15] if((byte) main::i#1!=(byte/signed byte/word/signed word/dword/signed dword) 101) goto main::@1 [ main::i#1 ] ( main:2 [ main::i#1 ] ) -- vbuz1_neq_vbuc1_then_la1 
+    lda i
+    cmp #$65
+    bne b1_from_b3
+    jmp breturn
+  //SEG28 main::@return
+  breturn:
+  //SEG29 [16] return  [ ] ( main:2 [ ] )
+    rts
+  //SEG30 main::@2
+  b2:
+  //SEG31 [17] *((const byte*) main::screen#0 + (byte) main::i#2) ← (byte) '*' [ main::i#2 ] ( main:2 [ main::i#2 ] ) -- pbuc1_derefidx_vbuz1=vbuc2 
+    ldy i
+    lda #'*'
+    sta screen,y
+    jmp b3
+}
+//SEG32 isSet
+isSet: {
+    .label _0 = 8
+    .label _1 = 9
+    .label i = 5
+    .label b = 4
+    .label return = 6
+    .label return_1 = $a
+  //SEG33 [18] (byte~) isSet::$0 ← (byte) isSet::i#0 & (byte/signed byte/word/signed word/dword/signed dword) 8 [ isSet::b#0 isSet::$0 ] ( main:2::isSet:9 [ main::i#2 isSet::b#0 isSet::$0 ] ) -- vbuz1=vbuz2_band_vbuc1 
+    lda #8
+    and i
+    sta _0
+  //SEG34 [19] (boolean~) isSet::$1 ← (byte~) isSet::$0 != (byte/signed byte/word/signed word/dword/signed dword) 0 [ isSet::b#0 isSet::$1 ] ( main:2::isSet:9 [ main::i#2 isSet::b#0 isSet::$1 ] ) -- vboz1=vbuz2_neq_vbuc1 
+    lda _0
+    cmp #0
+    beq !+
+    lda #1
+  !:
+    sta _1
+  //SEG35 [20] (boolean) isSet::return#1 ← (boolean) isSet::b#0 || (boolean~) isSet::$1 [ isSet::return#1 ] ( main:2::isSet:9 [ main::i#2 isSet::return#1 ] ) -- vboz1=vboz2_or_vboz3 
+    lda b
+    ora _1
+    sta return_1
+    jmp breturn
+  //SEG36 isSet::@return
+  breturn:
+  //SEG37 [21] return  [ isSet::return#1 ] ( main:2::isSet:9 [ main::i#2 isSet::return#1 ] )
+    rts
+}
+
+REGISTER UPLIFT POTENTIAL REGISTERS
+Statement [6] (byte~) main::$0 ← (byte) main::i#2 & (byte/signed byte/word/signed word/dword/signed dword) 1 [ main::i#2 main::$0 ] ( main:2 [ main::i#2 main::$0 ] ) always clobbers reg byte a 
+Removing always clobbered register reg byte a as potential for zp ZP_BYTE:2 [ main::i#2 main::i#1 ]
+Statement [7] (boolean) isSet::b#0 ← (byte~) main::$0 == (byte/signed byte/word/signed word/dword/signed dword) 0 [ main::i#2 isSet::b#0 ] ( main:2 [ main::i#2 isSet::b#0 ] ) always clobbers reg byte a 
+Statement [13] *((const byte*) main::screen#0 + (byte) main::i#2) ← (byte) ' ' [ main::i#2 ] ( main:2 [ main::i#2 ] ) always clobbers reg byte a 
+Statement [17] *((const byte*) main::screen#0 + (byte) main::i#2) ← (byte) '*' [ main::i#2 ] ( main:2 [ main::i#2 ] ) always clobbers reg byte a 
+Statement [18] (byte~) isSet::$0 ← (byte) isSet::i#0 & (byte/signed byte/word/signed word/dword/signed dword) 8 [ isSet::b#0 isSet::$0 ] ( main:2::isSet:9 [ main::i#2 isSet::b#0 isSet::$0 ] ) always clobbers reg byte a 
+Removing always clobbered register reg byte a as potential for zp ZP_BOOL:4 [ isSet::b#0 ]
+Statement [19] (boolean~) isSet::$1 ← (byte~) isSet::$0 != (byte/signed byte/word/signed word/dword/signed dword) 0 [ isSet::b#0 isSet::$1 ] ( main:2::isSet:9 [ main::i#2 isSet::b#0 isSet::$1 ] ) always clobbers reg byte a 
+Statement [20] (boolean) isSet::return#1 ← (boolean) isSet::b#0 || (boolean~) isSet::$1 [ isSet::return#1 ] ( main:2::isSet:9 [ main::i#2 isSet::return#1 ] ) always clobbers reg byte a 
+Statement [6] (byte~) main::$0 ← (byte) main::i#2 & (byte/signed byte/word/signed word/dword/signed dword) 1 [ main::i#2 main::$0 ] ( main:2 [ main::i#2 main::$0 ] ) always clobbers reg byte a 
+Statement [7] (boolean) isSet::b#0 ← (byte~) main::$0 == (byte/signed byte/word/signed word/dword/signed dword) 0 [ main::i#2 isSet::b#0 ] ( main:2 [ main::i#2 isSet::b#0 ] ) always clobbers reg byte a 
+Statement [13] *((const byte*) main::screen#0 + (byte) main::i#2) ← (byte) ' ' [ main::i#2 ] ( main:2 [ main::i#2 ] ) always clobbers reg byte a 
+Statement [17] *((const byte*) main::screen#0 + (byte) main::i#2) ← (byte) '*' [ main::i#2 ] ( main:2 [ main::i#2 ] ) always clobbers reg byte a 
+Statement [18] (byte~) isSet::$0 ← (byte) isSet::i#0 & (byte/signed byte/word/signed word/dword/signed dword) 8 [ isSet::b#0 isSet::$0 ] ( main:2::isSet:9 [ main::i#2 isSet::b#0 isSet::$0 ] ) always clobbers reg byte a 
+Statement [19] (boolean~) isSet::$1 ← (byte~) isSet::$0 != (byte/signed byte/word/signed word/dword/signed dword) 0 [ isSet::b#0 isSet::$1 ] ( main:2::isSet:9 [ main::i#2 isSet::b#0 isSet::$1 ] ) always clobbers reg byte a 
+Statement [20] (boolean) isSet::return#1 ← (boolean) isSet::b#0 || (boolean~) isSet::$1 [ isSet::return#1 ] ( main:2::isSet:9 [ main::i#2 isSet::return#1 ] ) always clobbers reg byte a 
+Potential registers zp ZP_BYTE:2 [ main::i#2 main::i#1 ] : zp ZP_BYTE:2 , reg byte x , reg byte y , 
+Potential registers zp ZP_BYTE:3 [ main::$0 ] : zp ZP_BYTE:3 , reg byte a , reg byte x , reg byte y , 
+Potential registers zp ZP_BOOL:4 [ isSet::b#0 ] : zp ZP_BOOL:4 , 
+Potential registers zp ZP_BYTE:5 [ isSet::i#0 ] : zp ZP_BYTE:5 , reg byte a , reg byte x , reg byte y , 
+Potential registers zp ZP_BOOL:6 [ isSet::return#0 ] : zp ZP_BOOL:6 , reg byte a , 
+Potential registers zp ZP_BOOL:7 [ main::$2 ] : zp ZP_BOOL:7 , reg byte a , 
+Potential registers zp ZP_BYTE:8 [ isSet::$0 ] : zp ZP_BYTE:8 , reg byte a , reg byte x , reg byte y , 
+Potential registers zp ZP_BOOL:9 [ isSet::$1 ] : zp ZP_BOOL:9 , reg byte a , 
+Potential registers zp ZP_BOOL:10 [ isSet::return#1 ] : zp ZP_BOOL:10 , reg byte a , 
+
+REGISTER UPLIFT SCOPES
+Uplift Scope [main] 23.1: zp ZP_BYTE:2 [ main::i#2 main::i#1 ] 22: zp ZP_BYTE:3 [ main::$0 ] 22: zp ZP_BOOL:7 [ main::$2 ] 
+Uplift Scope [isSet] 22: zp ZP_BOOL:6 [ isSet::return#0 ] 13: zp ZP_BYTE:5 [ isSet::i#0 ] 4.33: zp ZP_BOOL:10 [ isSet::return#1 ] 4: zp ZP_BYTE:8 [ isSet::$0 ] 4: zp ZP_BOOL:9 [ isSet::$1 ] 3.25: zp ZP_BOOL:4 [ isSet::b#0 ] 
+Uplift Scope [] 
+
+Uplifting [main] best 871 combination reg byte x [ main::i#2 main::i#1 ] reg byte a [ main::$0 ] reg byte a [ main::$2 ] 
+Uplifting [isSet] best 735 combination reg byte a [ isSet::return#0 ] reg byte x [ isSet::i#0 ] reg byte a [ isSet::return#1 ] reg byte a [ isSet::$0 ] reg byte a [ isSet::$1 ] zp ZP_BOOL:4 [ isSet::b#0 ] 
+Limited combination testing to 100 combinations of 128 possible.
+Uplifting [] best 735 combination 
+Allocated (was zp ZP_BOOL:4) zp ZP_BOOL:2 [ isSet::b#0 ]
+
+ASSEMBLER BEFORE OPTIMIZATION
+//SEG0 Basic Upstart
+.pc = $801 "Basic"
+:BasicUpstart(main)
+.pc = $80d "Program"
+//SEG1 Global Constants & labels
+//SEG2 @begin
+bbegin:
+//SEG3 [1] phi from @begin to @2 [phi:@begin->@2]
+b2_from_bbegin:
+  jmp b2
+//SEG4 @2
+b2:
+//SEG5 [2] call main param-assignment [ ] ( )
+//SEG6 [4] phi from @2 to main [phi:@2->main]
+main_from_b2:
+  jsr main
+//SEG7 [3] phi from @2 to @end [phi:@2->@end]
+bend_from_b2:
+  jmp bend
+//SEG8 @end
+bend:
+//SEG9 main
+main: {
+    .label screen = $400
+  //SEG10 [5] phi from main to main::@1 [phi:main->main::@1]
+  b1_from_main:
+  //SEG11 [5] phi (byte) main::i#2 = (byte/signed byte/word/signed word/dword/signed dword) 0 [phi:main->main::@1#0] -- vbuxx=vbuc1 
+    ldx #0
+    jmp b1
+  //SEG12 [5] phi from main::@3 to main::@1 [phi:main::@3->main::@1]
+  b1_from_b3:
+  //SEG13 [5] phi (byte) main::i#2 = (byte) main::i#1 [phi:main::@3->main::@1#0] -- register_copy 
+    jmp b1
+  //SEG14 main::@1
+  b1:
+  //SEG15 [6] (byte~) main::$0 ← (byte) main::i#2 & (byte/signed byte/word/signed word/dword/signed dword) 1 [ main::i#2 main::$0 ] ( main:2 [ main::i#2 main::$0 ] ) -- vbuaa=vbuxx_band_vbuc1 
+    txa
+    and #1
+  //SEG16 [7] (boolean) isSet::b#0 ← (byte~) main::$0 == (byte/signed byte/word/signed word/dword/signed dword) 0 [ main::i#2 isSet::b#0 ] ( main:2 [ main::i#2 isSet::b#0 ] ) -- vboz1=vbuaa_eq_vbuc1 
+    cmp #0
+    beq !+
+    lda #1
+  !:
+    eor #1
+    sta isSet.b
+  //SEG17 [8] (byte) isSet::i#0 ← (byte) main::i#2 [ main::i#2 isSet::b#0 isSet::i#0 ] ( main:2 [ main::i#2 isSet::b#0 isSet::i#0 ] )
+    // (byte) isSet::i#0 = (byte) main::i#2  // register copy reg byte x
+  //SEG18 [9] call isSet param-assignment [ main::i#2 isSet::return#1 ] ( main:2 [ main::i#2 isSet::return#1 ] )
+    jsr isSet
+  //SEG19 [10] (boolean) isSet::return#0 ← (boolean) isSet::return#1 [ main::i#2 isSet::return#0 ] ( main:2 [ main::i#2 isSet::return#0 ] )
+    // (boolean) isSet::return#0 = (boolean) isSet::return#1  // register copy reg byte a
+    jmp b7
+  //SEG20 main::@7
+  b7:
+  //SEG21 [11] (boolean~) main::$2 ← (boolean) isSet::return#0 [ main::i#2 main::$2 ] ( main:2 [ main::i#2 main::$2 ] )
+    // (boolean~) main::$2 = (boolean) isSet::return#0  // register copy reg byte a
+  //SEG22 [12] if((boolean~) main::$2) goto main::@2 [ main::i#2 ] ( main:2 [ main::i#2 ] ) -- vboaa_then_la1 
+    cmp #0
+    bne b2
+    jmp b4
+  //SEG23 main::@4
+  b4:
+  //SEG24 [13] *((const byte*) main::screen#0 + (byte) main::i#2) ← (byte) ' ' [ main::i#2 ] ( main:2 [ main::i#2 ] ) -- pbuc1_derefidx_vbuxx=vbuc2 
+    lda #' '
+    sta screen,x
+    jmp b3
+  //SEG25 main::@3
+  b3:
+  //SEG26 [14] (byte) main::i#1 ← ++ (byte) main::i#2 [ main::i#1 ] ( main:2 [ main::i#1 ] ) -- vbuxx=_inc_vbuxx 
+    inx
+  //SEG27 [15] if((byte) main::i#1!=(byte/signed byte/word/signed word/dword/signed dword) 101) goto main::@1 [ main::i#1 ] ( main:2 [ main::i#1 ] ) -- vbuxx_neq_vbuc1_then_la1 
+    cpx #$65
+    bne b1_from_b3
+    jmp breturn
+  //SEG28 main::@return
+  breturn:
+  //SEG29 [16] return  [ ] ( main:2 [ ] )
+    rts
+  //SEG30 main::@2
+  b2:
+  //SEG31 [17] *((const byte*) main::screen#0 + (byte) main::i#2) ← (byte) '*' [ main::i#2 ] ( main:2 [ main::i#2 ] ) -- pbuc1_derefidx_vbuxx=vbuc2 
+    lda #'*'
+    sta screen,x
+    jmp b3
+}
+//SEG32 isSet
+isSet: {
+    .label b = 2
+  //SEG33 [18] (byte~) isSet::$0 ← (byte) isSet::i#0 & (byte/signed byte/word/signed word/dword/signed dword) 8 [ isSet::b#0 isSet::$0 ] ( main:2::isSet:9 [ main::i#2 isSet::b#0 isSet::$0 ] ) -- vbuaa=vbuxx_band_vbuc1 
+    txa
+    and #8
+  //SEG34 [19] (boolean~) isSet::$1 ← (byte~) isSet::$0 != (byte/signed byte/word/signed word/dword/signed dword) 0 [ isSet::b#0 isSet::$1 ] ( main:2::isSet:9 [ main::i#2 isSet::b#0 isSet::$1 ] ) -- vboaa=vbuaa_neq_vbuc1 
+    cmp #0
+    beq !+
+    lda #1
+  !:
+  //SEG35 [20] (boolean) isSet::return#1 ← (boolean) isSet::b#0 || (boolean~) isSet::$1 [ isSet::return#1 ] ( main:2::isSet:9 [ main::i#2 isSet::return#1 ] ) -- vboaa=vboz1_or_vboaa 
+    ora b
+    jmp breturn
+  //SEG36 isSet::@return
+  breturn:
+  //SEG37 [21] return  [ isSet::return#1 ] ( main:2::isSet:9 [ main::i#2 isSet::return#1 ] )
+    rts
+}
+
+ASSEMBLER OPTIMIZATIONS
+Removing instruction jmp b2
+Removing instruction jmp bend
+Removing instruction jmp b1
+Removing instruction jmp b7
+Removing instruction jmp b4
+Removing instruction jmp b3
+Removing instruction jmp breturn
+Removing instruction jmp breturn
+Succesful ASM optimization Pass5NextJumpElimination
+Replacing label b1_from_b3 with b1
+Removing instruction bbegin:
+Removing instruction b2_from_bbegin:
+Removing instruction main_from_b2:
+Removing instruction bend_from_b2:
+Removing instruction b1_from_b3:
+Succesful ASM optimization Pass5RedundantLabelElimination
+Removing instruction b2:
+Removing instruction bend:
+Removing instruction b1_from_main:
+Removing instruction b7:
+Removing instruction b4:
+Removing instruction breturn:
+Removing instruction breturn:
+Succesful ASM optimization Pass5UnusedLabelElimination
+Removing instruction jmp b1
+Succesful ASM optimization Pass5NextJumpElimination
+
+FINAL SYMBOL TABLE
+(label) @2
+(label) @begin
+(label) @end
+(boolean()) isSet((byte) isSet::i , (boolean) isSet::b)
+(byte~) isSet::$0 reg byte a 4.0
+(boolean~) isSet::$1 reg byte a 4.0
+(label) isSet::@return
+(boolean) isSet::b
+(boolean) isSet::b#0 b zp ZP_BOOL:2 3.25
+(byte) isSet::i
+(byte) isSet::i#0 reg byte x 13.0
+(boolean) isSet::return
+(boolean) isSet::return#0 reg byte a 22.0
+(boolean) isSet::return#1 reg byte a 4.333333333333333
+(void()) main()
+(byte~) main::$0 reg byte a 22.0
+(boolean~) main::$2 reg byte a 22.0
+(label) main::@1
+(label) main::@2
+(label) main::@3
+(label) main::@4
+(label) main::@7
+(label) main::@return
+(byte) main::i
+(byte) main::i#1 reg byte x 16.5
+(byte) main::i#2 reg byte x 6.6
+(byte*) main::screen
+(const byte*) main::screen#0 screen = ((byte*))(word/signed word/dword/signed dword) 1024
+
+reg byte x [ main::i#2 main::i#1 ]
+reg byte a [ main::$0 ]
+zp ZP_BOOL:2 [ isSet::b#0 ]
+reg byte x [ isSet::i#0 ]
+reg byte a [ isSet::return#0 ]
+reg byte a [ main::$2 ]
+reg byte a [ isSet::$0 ]
+reg byte a [ isSet::$1 ]
+reg byte a [ isSet::return#1 ]
+
+
+FINAL ASSEMBLER
+Score: 546
+
+//SEG0 Basic Upstart
+.pc = $801 "Basic"
+:BasicUpstart(main)
+.pc = $80d "Program"
+//SEG1 Global Constants & labels
+//SEG2 @begin
+//SEG3 [1] phi from @begin to @2 [phi:@begin->@2]
+//SEG4 @2
+//SEG5 [2] call main param-assignment [ ] ( )
+//SEG6 [4] phi from @2 to main [phi:@2->main]
+  jsr main
+//SEG7 [3] phi from @2 to @end [phi:@2->@end]
+//SEG8 @end
+//SEG9 main
+main: {
+    .label screen = $400
+  //SEG10 [5] phi from main to main::@1 [phi:main->main::@1]
+  //SEG11 [5] phi (byte) main::i#2 = (byte/signed byte/word/signed word/dword/signed dword) 0 [phi:main->main::@1#0] -- vbuxx=vbuc1 
+    ldx #0
+  //SEG12 [5] phi from main::@3 to main::@1 [phi:main::@3->main::@1]
+  //SEG13 [5] phi (byte) main::i#2 = (byte) main::i#1 [phi:main::@3->main::@1#0] -- register_copy 
+  //SEG14 main::@1
+  b1:
+  //SEG15 [6] (byte~) main::$0 ← (byte) main::i#2 & (byte/signed byte/word/signed word/dword/signed dword) 1 [ main::i#2 main::$0 ] ( main:2 [ main::i#2 main::$0 ] ) -- vbuaa=vbuxx_band_vbuc1 
+    txa
+    and #1
+  //SEG16 [7] (boolean) isSet::b#0 ← (byte~) main::$0 == (byte/signed byte/word/signed word/dword/signed dword) 0 [ main::i#2 isSet::b#0 ] ( main:2 [ main::i#2 isSet::b#0 ] ) -- vboz1=vbuaa_eq_vbuc1 
+    cmp #0
+    beq !+
+    lda #1
+  !:
+    eor #1
+    sta isSet.b
+  //SEG17 [8] (byte) isSet::i#0 ← (byte) main::i#2 [ main::i#2 isSet::b#0 isSet::i#0 ] ( main:2 [ main::i#2 isSet::b#0 isSet::i#0 ] )
+    // (byte) isSet::i#0 = (byte) main::i#2  // register copy reg byte x
+  //SEG18 [9] call isSet param-assignment [ main::i#2 isSet::return#1 ] ( main:2 [ main::i#2 isSet::return#1 ] )
+    jsr isSet
+  //SEG19 [10] (boolean) isSet::return#0 ← (boolean) isSet::return#1 [ main::i#2 isSet::return#0 ] ( main:2 [ main::i#2 isSet::return#0 ] )
+    // (boolean) isSet::return#0 = (boolean) isSet::return#1  // register copy reg byte a
+  //SEG20 main::@7
+  //SEG21 [11] (boolean~) main::$2 ← (boolean) isSet::return#0 [ main::i#2 main::$2 ] ( main:2 [ main::i#2 main::$2 ] )
+    // (boolean~) main::$2 = (boolean) isSet::return#0  // register copy reg byte a
+  //SEG22 [12] if((boolean~) main::$2) goto main::@2 [ main::i#2 ] ( main:2 [ main::i#2 ] ) -- vboaa_then_la1 
+    cmp #0
+    bne b2
+  //SEG23 main::@4
+  //SEG24 [13] *((const byte*) main::screen#0 + (byte) main::i#2) ← (byte) ' ' [ main::i#2 ] ( main:2 [ main::i#2 ] ) -- pbuc1_derefidx_vbuxx=vbuc2 
+    lda #' '
+    sta screen,x
+  //SEG25 main::@3
+  b3:
+  //SEG26 [14] (byte) main::i#1 ← ++ (byte) main::i#2 [ main::i#1 ] ( main:2 [ main::i#1 ] ) -- vbuxx=_inc_vbuxx 
+    inx
+  //SEG27 [15] if((byte) main::i#1!=(byte/signed byte/word/signed word/dword/signed dword) 101) goto main::@1 [ main::i#1 ] ( main:2 [ main::i#1 ] ) -- vbuxx_neq_vbuc1_then_la1 
+    cpx #$65
+    bne b1
+  //SEG28 main::@return
+  //SEG29 [16] return  [ ] ( main:2 [ ] )
+    rts
+  //SEG30 main::@2
+  b2:
+  //SEG31 [17] *((const byte*) main::screen#0 + (byte) main::i#2) ← (byte) '*' [ main::i#2 ] ( main:2 [ main::i#2 ] ) -- pbuc1_derefidx_vbuxx=vbuc2 
+    lda #'*'
+    sta screen,x
+    jmp b3
+}
+//SEG32 isSet
+isSet: {
+    .label b = 2
+  //SEG33 [18] (byte~) isSet::$0 ← (byte) isSet::i#0 & (byte/signed byte/word/signed word/dword/signed dword) 8 [ isSet::b#0 isSet::$0 ] ( main:2::isSet:9 [ main::i#2 isSet::b#0 isSet::$0 ] ) -- vbuaa=vbuxx_band_vbuc1 
+    txa
+    and #8
+  //SEG34 [19] (boolean~) isSet::$1 ← (byte~) isSet::$0 != (byte/signed byte/word/signed word/dword/signed dword) 0 [ isSet::b#0 isSet::$1 ] ( main:2::isSet:9 [ main::i#2 isSet::b#0 isSet::$1 ] ) -- vboaa=vbuaa_neq_vbuc1 
+    cmp #0
+    beq !+
+    lda #1
+  !:
+  //SEG35 [20] (boolean) isSet::return#1 ← (boolean) isSet::b#0 || (boolean~) isSet::$1 [ isSet::return#1 ] ( main:2::isSet:9 [ main::i#2 isSet::return#1 ] ) -- vboaa=vboz1_or_vboaa 
+    ora b
+  //SEG36 isSet::@return
+  //SEG37 [21] return  [ isSet::return#1 ] ( main:2::isSet:9 [ main::i#2 isSet::return#1 ] )
+    rts
+}
+

src/test/java/dk/camelot64/kickc/test/ref/bool-function.sym

@@ -0,0 +1,38 @@
+(label) @2
+(label) @begin
+(label) @end
+(boolean()) isSet((byte) isSet::i , (boolean) isSet::b)
+(byte~) isSet::$0 reg byte a 4.0
+(boolean~) isSet::$1 reg byte a 4.0
+(label) isSet::@return
+(boolean) isSet::b
+(boolean) isSet::b#0 b zp ZP_BOOL:2 3.25
+(byte) isSet::i
+(byte) isSet::i#0 reg byte x 13.0
+(boolean) isSet::return
+(boolean) isSet::return#0 reg byte a 22.0
+(boolean) isSet::return#1 reg byte a 4.333333333333333
+(void()) main()
+(byte~) main::$0 reg byte a 22.0
+(boolean~) main::$2 reg byte a 22.0
+(label) main::@1
+(label) main::@2
+(label) main::@3
+(label) main::@4
+(label) main::@7
+(label) main::@return
+(byte) main::i
+(byte) main::i#1 reg byte x 16.5
+(byte) main::i#2 reg byte x 6.6
+(byte*) main::screen
+(const byte*) main::screen#0 screen = ((byte*))(word/signed word/dword/signed dword) 1024
+
+reg byte x [ main::i#2 main::i#1 ]
+reg byte a [ main::$0 ]
+zp ZP_BOOL:2 [ isSet::b#0 ]
+reg byte x [ isSet::i#0 ]
+reg byte a [ isSet::return#0 ]
+reg byte a [ main::$2 ]
+reg byte a [ isSet::$0 ]
+reg byte a [ isSet::$1 ]
+reg byte a [ isSet::return#1 ]

src/test/java/dk/camelot64/kickc/test/ref/bool-ifs.asm

@@ -0,0 +1,113 @@
+.pc = $801 "Basic"
+:BasicUpstart(main)
+.pc = $80d "Program"
+  jsr main
+main: {
+    jsr bool_and
+    jsr bool_or
+    jsr bool_not
+    jsr bool_complex
+    rts
+}
+bool_complex: {
+    .label screen = $478
+    ldy #0
+  b1:
+    tya
+    and #1
+    tax
+    tya
+    and #1
+    cpy #$a
+    bcc b8
+  b7:
+    cpy #$a
+    bcc b4
+    cmp #0
+    beq b4
+  b2:
+    lda #'*'
+    sta screen,y
+  b3:
+    iny
+    cpy #$15
+    bne b1
+    rts
+  b4:
+    lda #' '
+    sta screen,y
+    jmp b3
+  b8:
+    cpx #0
+    beq b2
+    jmp b7
+}
+bool_not: {
+    .label screen = $450
+    ldx #0
+  b1:
+    txa
+    and #1
+    cpx #$a
+    bcc b4
+    cmp #0
+    beq b4
+    lda #'*'
+    sta screen,x
+  b3:
+    inx
+    cpx #$15
+    bne b1
+    rts
+  b4:
+    lda #' '
+    sta screen,x
+    jmp b3
+}
+bool_or: {
+    .label screen = $428
+    ldx #0
+  b1:
+    txa
+    and #1
+    cpx #$a
+    bcc b2
+    cmp #0
+    beq b2
+    lda #' '
+    sta screen,x
+  b3:
+    inx
+    cpx #$15
+    bne b1
+    rts
+  b2:
+    lda #'*'
+    sta screen,x
+    jmp b3
+}
+bool_and: {
+    .label screen = $400
+    ldx #0
+  b1:
+    txa
+    and #1
+    cpx #$a
+    bcc b7
+  b4:
+    lda #' '
+    sta screen,x
+  b3:
+    inx
+    cpx #$15
+    bne b1
+    rts
+  b7:
+    cmp #0
+    beq b2
+    jmp b4
+  b2:
+    lda #'*'
+    sta screen,x
+    jmp b3
+}

src/test/java/dk/camelot64/kickc/test/ref/bool-ifs.cfg

@@ -0,0 +1,131 @@
+@begin: scope:[]  from
+  [0] phi() [ ] ( )
+  to:@5
+@5: scope:[]  from @begin
+  [1] phi() [ ] ( )
+  [2] call main param-assignment [ ] ( )
+  to:@end
+@end: scope:[]  from @5
+  [3] phi() [ ] ( )
+main: scope:[main]  from @5
+  [4] phi() [ ] ( main:2 [ ] )
+  [5] call bool_and param-assignment [ ] ( main:2 [ ] )
+  to:main::@1
+main::@1: scope:[main]  from main
+  [6] phi() [ ] ( main:2 [ ] )
+  [7] call bool_or param-assignment [ ] ( main:2 [ ] )
+  to:main::@2
+main::@2: scope:[main]  from main::@1
+  [8] phi() [ ] ( main:2 [ ] )
+  [9] call bool_not param-assignment [ ] ( main:2 [ ] )
+  to:main::@3
+main::@3: scope:[main]  from main::@2
+  [10] phi() [ ] ( main:2 [ ] )
+  [11] call bool_complex param-assignment [ ] ( main:2 [ ] )
+  to:main::@return
+main::@return: scope:[main]  from main::@3
+  [12] return  [ ] ( main:2 [ ] )
+  to:@return
+bool_complex: scope:[bool_complex]  from main::@3
+  [13] phi() [ ] ( main:2::bool_complex:11 [ ] )
+  to:bool_complex::@1
+bool_complex::@1: scope:[bool_complex]  from bool_complex bool_complex::@3
+  [14] (byte) bool_complex::i#2 ← phi( bool_complex/(byte/signed byte/word/signed word/dword/signed dword) 0 bool_complex::@3/(byte) bool_complex::i#1 ) [ bool_complex::i#2 ] ( main:2::bool_complex:11 [ bool_complex::i#2 ] )
+  [15] (byte~) bool_complex::$1 ← (byte) bool_complex::i#2 & (byte/signed byte/word/signed word/dword/signed dword) 1 [ bool_complex::i#2 bool_complex::$1 ] ( main:2::bool_complex:11 [ bool_complex::i#2 bool_complex::$1 ] )
+  [16] (byte~) bool_complex::$5 ← (byte) bool_complex::i#2 & (byte/signed byte/word/signed word/dword/signed dword) 1 [ bool_complex::i#2 bool_complex::$1 bool_complex::$5 ] ( main:2::bool_complex:11 [ bool_complex::i#2 bool_complex::$1 bool_complex::$5 ] )
+  [17] if((byte) bool_complex::i#2<(byte/signed byte/word/signed word/dword/signed dword) 10) goto bool_complex::@8 [ bool_complex::i#2 bool_complex::$1 bool_complex::$5 ] ( main:2::bool_complex:11 [ bool_complex::i#2 bool_complex::$1 bool_complex::$5 ] )
+  to:bool_complex::@7
+bool_complex::@7: scope:[bool_complex]  from bool_complex::@1 bool_complex::@8
+  [18] if((byte) bool_complex::i#2<(byte/signed byte/word/signed word/dword/signed dword) 10) goto bool_complex::@4 [ bool_complex::i#2 bool_complex::$5 ] ( main:2::bool_complex:11 [ bool_complex::i#2 bool_complex::$5 ] )
+  to:bool_complex::@9
+bool_complex::@9: scope:[bool_complex]  from bool_complex::@7
+  [19] if((byte~) bool_complex::$5==(byte/signed byte/word/signed word/dword/signed dword) 0) goto bool_complex::@4 [ bool_complex::i#2 ] ( main:2::bool_complex:11 [ bool_complex::i#2 ] )
+  to:bool_complex::@2
+bool_complex::@2: scope:[bool_complex]  from bool_complex::@8 bool_complex::@9
+  [20] *((const byte*) bool_complex::screen#0 + (byte) bool_complex::i#2) ← (byte) '*' [ bool_complex::i#2 ] ( main:2::bool_complex:11 [ bool_complex::i#2 ] )
+  to:bool_complex::@3
+bool_complex::@3: scope:[bool_complex]  from bool_complex::@2 bool_complex::@4
+  [21] (byte) bool_complex::i#1 ← ++ (byte) bool_complex::i#2 [ bool_complex::i#1 ] ( main:2::bool_complex:11 [ bool_complex::i#1 ] )
+  [22] if((byte) bool_complex::i#1!=(byte/signed byte/word/signed word/dword/signed dword) 21) goto bool_complex::@1 [ bool_complex::i#1 ] ( main:2::bool_complex:11 [ bool_complex::i#1 ] )
+  to:bool_complex::@return
+bool_complex::@return: scope:[bool_complex]  from bool_complex::@3
+  [23] return  [ ] ( main:2::bool_complex:11 [ ] )
+  to:@return
+bool_complex::@4: scope:[bool_complex]  from bool_complex::@7 bool_complex::@9
+  [24] *((const byte*) bool_complex::screen#0 + (byte) bool_complex::i#2) ← (byte) ' ' [ bool_complex::i#2 ] ( main:2::bool_complex:11 [ bool_complex::i#2 ] )
+  to:bool_complex::@3
+bool_complex::@8: scope:[bool_complex]  from bool_complex::@1
+  [25] if((byte~) bool_complex::$1==(byte/signed byte/word/signed word/dword/signed dword) 0) goto bool_complex::@2 [ bool_complex::i#2 bool_complex::$5 ] ( main:2::bool_complex:11 [ bool_complex::i#2 bool_complex::$5 ] )
+  to:bool_complex::@7
+bool_not: scope:[bool_not]  from main::@2
+  [26] phi() [ ] ( main:2::bool_not:9 [ ] )
+  to:bool_not::@1
+bool_not::@1: scope:[bool_not]  from bool_not bool_not::@3
+  [27] (byte) bool_not::i#2 ← phi( bool_not/(byte/signed byte/word/signed word/dword/signed dword) 0 bool_not::@3/(byte) bool_not::i#1 ) [ bool_not::i#2 ] ( main:2::bool_not:9 [ bool_not::i#2 ] )
+  [28] (byte~) bool_not::$1 ← (byte) bool_not::i#2 & (byte/signed byte/word/signed word/dword/signed dword) 1 [ bool_not::i#2 bool_not::$1 ] ( main:2::bool_not:9 [ bool_not::i#2 bool_not::$1 ] )
+  [29] if((byte) bool_not::i#2<(byte/signed byte/word/signed word/dword/signed dword) 10) goto bool_not::@4 [ bool_not::i#2 bool_not::$1 ] ( main:2::bool_not:9 [ bool_not::i#2 bool_not::$1 ] )
+  to:bool_not::@7
+bool_not::@7: scope:[bool_not]  from bool_not::@1
+  [30] if((byte~) bool_not::$1==(byte/signed byte/word/signed word/dword/signed dword) 0) goto bool_not::@4 [ bool_not::i#2 ] ( main:2::bool_not:9 [ bool_not::i#2 ] )
+  to:bool_not::@2
+bool_not::@2: scope:[bool_not]  from bool_not::@7
+  [31] *((const byte*) bool_not::screen#0 + (byte) bool_not::i#2) ← (byte) '*' [ bool_not::i#2 ] ( main:2::bool_not:9 [ bool_not::i#2 ] )
+  to:bool_not::@3
+bool_not::@3: scope:[bool_not]  from bool_not::@2 bool_not::@4
+  [32] (byte) bool_not::i#1 ← ++ (byte) bool_not::i#2 [ bool_not::i#1 ] ( main:2::bool_not:9 [ bool_not::i#1 ] )
+  [33] if((byte) bool_not::i#1!=(byte/signed byte/word/signed word/dword/signed dword) 21) goto bool_not::@1 [ bool_not::i#1 ] ( main:2::bool_not:9 [ bool_not::i#1 ] )
+  to:bool_not::@return
+bool_not::@return: scope:[bool_not]  from bool_not::@3
+  [34] return  [ ] ( main:2::bool_not:9 [ ] )
+  to:@return
+bool_not::@4: scope:[bool_not]  from bool_not::@1 bool_not::@7
+  [35] *((const byte*) bool_not::screen#0 + (byte) bool_not::i#2) ← (byte) ' ' [ bool_not::i#2 ] ( main:2::bool_not:9 [ bool_not::i#2 ] )
+  to:bool_not::@3
+bool_or: scope:[bool_or]  from main::@1
+  [36] phi() [ ] ( main:2::bool_or:7 [ ] )
+  to:bool_or::@1
+bool_or::@1: scope:[bool_or]  from bool_or bool_or::@3
+  [37] (byte) bool_or::i#2 ← phi( bool_or/(byte/signed byte/word/signed word/dword/signed dword) 0 bool_or::@3/(byte) bool_or::i#1 ) [ bool_or::i#2 ] ( main:2::bool_or:7 [ bool_or::i#2 ] )
+  [38] (byte~) bool_or::$1 ← (byte) bool_or::i#2 & (byte/signed byte/word/signed word/dword/signed dword) 1 [ bool_or::i#2 bool_or::$1 ] ( main:2::bool_or:7 [ bool_or::i#2 bool_or::$1 ] )
+  [39] if((byte) bool_or::i#2<(byte/signed byte/word/signed word/dword/signed dword) 10) goto bool_or::@2 [ bool_or::i#2 bool_or::$1 ] ( main:2::bool_or:7 [ bool_or::i#2 bool_or::$1 ] )
+  to:bool_or::@7
+bool_or::@7: scope:[bool_or]  from bool_or::@1
+  [40] if((byte~) bool_or::$1==(byte/signed byte/word/signed word/dword/signed dword) 0) goto bool_or::@2 [ bool_or::i#2 ] ( main:2::bool_or:7 [ bool_or::i#2 ] )
+  to:bool_or::@4
+bool_or::@4: scope:[bool_or]  from bool_or::@7
+  [41] *((const byte*) bool_or::screen#0 + (byte) bool_or::i#2) ← (byte) ' ' [ bool_or::i#2 ] ( main:2::bool_or:7 [ bool_or::i#2 ] )
+  to:bool_or::@3
+bool_or::@3: scope:[bool_or]  from bool_or::@2 bool_or::@4
+  [42] (byte) bool_or::i#1 ← ++ (byte) bool_or::i#2 [ bool_or::i#1 ] ( main:2::bool_or:7 [ bool_or::i#1 ] )
+  [43] if((byte) bool_or::i#1!=(byte/signed byte/word/signed word/dword/signed dword) 21) goto bool_or::@1 [ bool_or::i#1 ] ( main:2::bool_or:7 [ bool_or::i#1 ] )
+  to:bool_or::@return
+bool_or::@return: scope:[bool_or]  from bool_or::@3
+  [44] return  [ ] ( main:2::bool_or:7 [ ] )
+  to:@return
+bool_or::@2: scope:[bool_or]  from bool_or::@1 bool_or::@7
+  [45] *((const byte*) bool_or::screen#0 + (byte) bool_or::i#2) ← (byte) '*' [ bool_or::i#2 ] ( main:2::bool_or:7 [ bool_or::i#2 ] )
+  to:bool_or::@3
+bool_and: scope:[bool_and]  from main
+  [46] phi() [ ] ( main:2::bool_and:5 [ ] )
+  to:bool_and::@1
+bool_and::@1: scope:[bool_and]  from bool_and bool_and::@3
+  [47] (byte) bool_and::i#2 ← phi( bool_and/(byte/signed byte/word/signed word/dword/signed dword) 0 bool_and::@3/(byte) bool_and::i#1 ) [ bool_and::i#2 ] ( main:2::bool_and:5 [ bool_and::i#2 ] )
+  [48] (byte~) bool_and::$1 ← (byte) bool_and::i#2 & (byte/signed byte/word/signed word/dword/signed dword) 1 [ bool_and::i#2 bool_and::$1 ] ( main:2::bool_and:5 [ bool_and::i#2 bool_and::$1 ] )
+  [49] if((byte) bool_and::i#2<(byte/signed byte/word/signed word/dword/signed dword) 10) goto bool_and::@7 [ bool_and::i#2 bool_and::$1 ] ( main:2::bool_and:5 [ bool_and::i#2 bool_and::$1 ] )
+  to:bool_and::@4
+bool_and::@4: scope:[bool_and]  from bool_and::@1 bool_and::@7
+  [50] *((const byte*) bool_and::screen#0 + (byte) bool_and::i#2) ← (byte) ' ' [ bool_and::i#2 ] ( main:2::bool_and:5 [ bool_and::i#2 ] )
+  to:bool_and::@3
+bool_and::@3: scope:[bool_and]  from bool_and::@2 bool_and::@4
+  [51] (byte) bool_and::i#1 ← ++ (byte) bool_and::i#2 [ bool_and::i#1 ] ( main:2::bool_and:5 [ bool_and::i#1 ] )
+  [52] if((byte) bool_and::i#1!=(byte/signed byte/word/signed word/dword/signed dword) 21) goto bool_and::@1 [ bool_and::i#1 ] ( main:2::bool_and:5 [ bool_and::i#1 ] )
+  to:bool_and::@return
+bool_and::@return: scope:[bool_and]  from bool_and::@3
+  [53] return  [ ] ( main:2::bool_and:5 [ ] )
+  to:@return
+bool_and::@7: scope:[bool_and]  from bool_and::@1
+  [54] if((byte~) bool_and::$1==(byte/signed byte/word/signed word/dword/signed dword) 0) goto bool_and::@2 [ bool_and::i#2 ] ( main:2::bool_and:5 [ bool_and::i#2 ] )
+  to:bool_and::@4
+bool_and::@2: scope:[bool_and]  from bool_and::@7
+  [55] *((const byte*) bool_and::screen#0 + (byte) bool_and::i#2) ← (byte) '*' [ bool_and::i#2 ] ( main:2::bool_and:5 [ bool_and::i#2 ] )
+  to:bool_and::@3

src/test/java/dk/camelot64/kickc/test/ref/bool-ifs.sym

@@ -0,0 +1,73 @@
+(label) @5
+(label) @begin
+(label) @end
+(void()) bool_and()
+(byte~) bool_and::$1 reg byte a 11.0
+(label) bool_and::@1
+(label) bool_and::@2
+(label) bool_and::@3
+(label) bool_and::@4
+(label) bool_and::@7
+(label) bool_and::@return
+(byte) bool_and::i
+(byte) bool_and::i#1 reg byte x 16.5
+(byte) bool_and::i#2 reg byte x 11.0
+(byte*) bool_and::screen
+(const byte*) bool_and::screen#0 screen = ((byte*))(word/signed word/dword/signed dword) 1024
+(void()) bool_complex()
+(byte~) bool_complex::$1 reg byte x 7.333333333333333
+(byte~) bool_complex::$5 reg byte a 5.5
+(label) bool_complex::@1
+(label) bool_complex::@2
+(label) bool_complex::@3
+(label) bool_complex::@4
+(label) bool_complex::@7
+(label) bool_complex::@8
+(label) bool_complex::@9
+(label) bool_complex::@return
+(byte) bool_complex::i
+(byte) bool_complex::i#1 reg byte y 16.5
+(byte) bool_complex::i#2 reg byte y 9.777777777777779
+(byte*) bool_complex::screen
+(const byte*) bool_complex::screen#0 screen = ((byte*))(word/signed word/dword/signed dword) 1144
+(void()) bool_not()
+(byte~) bool_not::$1 reg byte a 11.0
+(label) bool_not::@1
+(label) bool_not::@2
+(label) bool_not::@3
+(label) bool_not::@4
+(label) bool_not::@7
+(label) bool_not::@return
+(byte) bool_not::i
+(byte) bool_not::i#1 reg byte x 16.5
+(byte) bool_not::i#2 reg byte x 11.0
+(byte*) bool_not::screen
+(const byte*) bool_not::screen#0 screen = ((byte*))(word/signed word/dword/signed dword) 1104
+(void()) bool_or()
+(byte~) bool_or::$1 reg byte a 11.0
+(label) bool_or::@1
+(label) bool_or::@2
+(label) bool_or::@3
+(label) bool_or::@4
+(label) bool_or::@7
+(label) bool_or::@return
+(byte) bool_or::i
+(byte) bool_or::i#1 reg byte x 16.5
+(byte) bool_or::i#2 reg byte x 11.0
+(byte*) bool_or::screen
+(const byte*) bool_or::screen#0 screen = ((byte*))(word/signed word/dword/signed dword) 1064
+(void()) main()
+(label) main::@1
+(label) main::@2
+(label) main::@3
+(label) main::@return
+
+reg byte y [ bool_complex::i#2 bool_complex::i#1 ]
+reg byte x [ bool_not::i#2 bool_not::i#1 ]
+reg byte x [ bool_or::i#2 bool_or::i#1 ]
+reg byte x [ bool_and::i#2 bool_and::i#1 ]
+reg byte x [ bool_complex::$1 ]
+reg byte a [ bool_complex::$5 ]
+reg byte a [ bool_not::$1 ]
+reg byte a [ bool_or::$1 ]
+reg byte a [ bool_and::$1 ]

src/test/java/dk/camelot64/kickc/test/ref/bool-vars.asm

@@ -11,35 +11,49 @@ main: {
 }
 bool_complex: {
     .label screen = $478
-    ldy #0
+    .label o1 = 2
+    .label o2 = 3
+    ldx #0
   b1:
-    tya
+    cpx #$a
+    lda #0
+    rol
+    eor #1
+    sta o1
+    txa
     and #1
-    tax
-    tya
-    and #1
-    cpy #$a
-    bcc b8
-  b7:
-    cpy #$a
-    bcc b4
     cmp #0
-    beq b4
+    beq !+
+    lda #1
+  !:
+    eor #1
+    sta o2
+    lda o1
+    cmp #0
+    bne b8
+  b7:
+    lda o1
+    cmp #0
+    bne b4
+    lda o2
+    cmp #0
+    bne b4
   b2:
     lda #'*'
-    sta screen,y
+    sta screen,x
   b3:
-    iny
-    cpy #$15
+    inx
+    cpx #$15
     bne b1
     rts
   b4:
     lda #' '
-    sta screen,y
+    sta screen,x
     jmp b3
   b8:
-    cpx #0
-    beq b2
+    lda o2
+    cmp #0
+    bne b2
     jmp b7
 }
 bool_not: {

src/test/java/dk/camelot64/kickc/test/ref/bool-vars.cfg

@@ -31,101 +31,102 @@ bool_complex: scope:[bool_complex]  from main::@3
   to:bool_complex::@1
 bool_complex::@1: scope:[bool_complex]  from bool_complex bool_complex::@3
   [14] (byte) bool_complex::i#2 ← phi( bool_complex/(byte/signed byte/word/signed word/dword/signed dword) 0 bool_complex::@3/(byte) bool_complex::i#1 ) [ bool_complex::i#2 ] ( main:2::bool_complex:11 [ bool_complex::i#2 ] )
-  [15] (byte~) bool_complex::$3 ← (byte) bool_complex::i#2 & (byte/signed byte/word/signed word/dword/signed dword) 1 [ bool_complex::i#2 bool_complex::$3 ] ( main:2::bool_complex:11 [ bool_complex::i#2 bool_complex::$3 ] )
-  [16] (byte~) bool_complex::$7 ← (byte) bool_complex::i#2 & (byte/signed byte/word/signed word/dword/signed dword) 1 [ bool_complex::i#2 bool_complex::$3 bool_complex::$7 ] ( main:2::bool_complex:11 [ bool_complex::i#2 bool_complex::$3 bool_complex::$7 ] )
-  [17] if((byte) bool_complex::i#2<(byte/signed byte/word/signed word/dword/signed dword) 10) goto bool_complex::@8 [ bool_complex::i#2 bool_complex::$3 bool_complex::$7 ] ( main:2::bool_complex:11 [ bool_complex::i#2 bool_complex::$3 bool_complex::$7 ] )
+  [15] (boolean) bool_complex::o1#0 ← (byte) bool_complex::i#2 < (byte/signed byte/word/signed word/dword/signed dword) 10 [ bool_complex::i#2 bool_complex::o1#0 ] ( main:2::bool_complex:11 [ bool_complex::i#2 bool_complex::o1#0 ] )
+  [16] (byte~) bool_complex::$1 ← (byte) bool_complex::i#2 & (byte/signed byte/word/signed word/dword/signed dword) 1 [ bool_complex::i#2 bool_complex::o1#0 bool_complex::$1 ] ( main:2::bool_complex:11 [ bool_complex::i#2 bool_complex::o1#0 bool_complex::$1 ] )
+  [17] (boolean) bool_complex::o2#0 ← (byte~) bool_complex::$1 == (byte/signed byte/word/signed word/dword/signed dword) 0 [ bool_complex::i#2 bool_complex::o1#0 bool_complex::o2#0 ] ( main:2::bool_complex:11 [ bool_complex::i#2 bool_complex::o1#0 bool_complex::o2#0 ] )
+  [18] if((boolean) bool_complex::o1#0) goto bool_complex::@8 [ bool_complex::i#2 bool_complex::o1#0 bool_complex::o2#0 ] ( main:2::bool_complex:11 [ bool_complex::i#2 bool_complex::o1#0 bool_complex::o2#0 ] )
   to:bool_complex::@7
 bool_complex::@7: scope:[bool_complex]  from bool_complex::@1 bool_complex::@8
-  [18] if((byte) bool_complex::i#2<(byte/signed byte/word/signed word/dword/signed dword) 10) goto bool_complex::@4 [ bool_complex::i#2 bool_complex::$7 ] ( main:2::bool_complex:11 [ bool_complex::i#2 bool_complex::$7 ] )
+  [19] if((boolean) bool_complex::o1#0) goto bool_complex::@4 [ bool_complex::i#2 bool_complex::o2#0 ] ( main:2::bool_complex:11 [ bool_complex::i#2 bool_complex::o2#0 ] )
   to:bool_complex::@9
 bool_complex::@9: scope:[bool_complex]  from bool_complex::@7
-  [19] if((byte~) bool_complex::$7==(byte/signed byte/word/signed word/dword/signed dword) 0) goto bool_complex::@4 [ bool_complex::i#2 ] ( main:2::bool_complex:11 [ bool_complex::i#2 ] )
+  [20] if((boolean) bool_complex::o2#0) goto bool_complex::@4 [ bool_complex::i#2 ] ( main:2::bool_complex:11 [ bool_complex::i#2 ] )
   to:bool_complex::@2
 bool_complex::@2: scope:[bool_complex]  from bool_complex::@8 bool_complex::@9
-  [20] *((const byte*) bool_complex::screen#0 + (byte) bool_complex::i#2) ← (byte) '*' [ bool_complex::i#2 ] ( main:2::bool_complex:11 [ bool_complex::i#2 ] )
+  [21] *((const byte*) bool_complex::screen#0 + (byte) bool_complex::i#2) ← (byte) '*' [ bool_complex::i#2 ] ( main:2::bool_complex:11 [ bool_complex::i#2 ] )
   to:bool_complex::@3
 bool_complex::@3: scope:[bool_complex]  from bool_complex::@2 bool_complex::@4
-  [21] (byte) bool_complex::i#1 ← ++ (byte) bool_complex::i#2 [ bool_complex::i#1 ] ( main:2::bool_complex:11 [ bool_complex::i#1 ] )
-  [22] if((byte) bool_complex::i#1!=(byte/signed byte/word/signed word/dword/signed dword) 21) goto bool_complex::@1 [ bool_complex::i#1 ] ( main:2::bool_complex:11 [ bool_complex::i#1 ] )
+  [22] (byte) bool_complex::i#1 ← ++ (byte) bool_complex::i#2 [ bool_complex::i#1 ] ( main:2::bool_complex:11 [ bool_complex::i#1 ] )
+  [23] if((byte) bool_complex::i#1!=(byte/signed byte/word/signed word/dword/signed dword) 21) goto bool_complex::@1 [ bool_complex::i#1 ] ( main:2::bool_complex:11 [ bool_complex::i#1 ] )
   to:bool_complex::@return
 bool_complex::@return: scope:[bool_complex]  from bool_complex::@3
-  [23] return  [ ] ( main:2::bool_complex:11 [ ] )
+  [24] return  [ ] ( main:2::bool_complex:11 [ ] )
   to:@return
 bool_complex::@4: scope:[bool_complex]  from bool_complex::@7 bool_complex::@9
-  [24] *((const byte*) bool_complex::screen#0 + (byte) bool_complex::i#2) ← (byte) ' ' [ bool_complex::i#2 ] ( main:2::bool_complex:11 [ bool_complex::i#2 ] )
+  [25] *((const byte*) bool_complex::screen#0 + (byte) bool_complex::i#2) ← (byte) ' ' [ bool_complex::i#2 ] ( main:2::bool_complex:11 [ bool_complex::i#2 ] )
   to:bool_complex::@3
 bool_complex::@8: scope:[bool_complex]  from bool_complex::@1
-  [25] if((byte~) bool_complex::$3==(byte/signed byte/word/signed word/dword/signed dword) 0) goto bool_complex::@2 [ bool_complex::i#2 bool_complex::$7 ] ( main:2::bool_complex:11 [ bool_complex::i#2 bool_complex::$7 ] )
+  [26] if((boolean) bool_complex::o2#0) goto bool_complex::@2 [ bool_complex::i#2 bool_complex::o1#0 bool_complex::o2#0 ] ( main:2::bool_complex:11 [ bool_complex::i#2 bool_complex::o1#0 bool_complex::o2#0 ] )
   to:bool_complex::@7
 bool_not: scope:[bool_not]  from main::@2
-  [26] phi() [ ] ( main:2::bool_not:9 [ ] )
+  [27] phi() [ ] ( main:2::bool_not:9 [ ] )
   to:bool_not::@1
 bool_not::@1: scope:[bool_not]  from bool_not bool_not::@3
-  [27] (byte) bool_not::i#2 ← phi( bool_not/(byte/signed byte/word/signed word/dword/signed dword) 0 bool_not::@3/(byte) bool_not::i#1 ) [ bool_not::i#2 ] ( main:2::bool_not:9 [ bool_not::i#2 ] )
-  [28] (byte~) bool_not::$3 ← (byte) bool_not::i#2 & (byte/signed byte/word/signed word/dword/signed dword) 1 [ bool_not::i#2 bool_not::$3 ] ( main:2::bool_not:9 [ bool_not::i#2 bool_not::$3 ] )
-  [29] if((byte) bool_not::i#2<(byte/signed byte/word/signed word/dword/signed dword) 10) goto bool_not::@4 [ bool_not::i#2 bool_not::$3 ] ( main:2::bool_not:9 [ bool_not::i#2 bool_not::$3 ] )
+  [28] (byte) bool_not::i#2 ← phi( bool_not/(byte/signed byte/word/signed word/dword/signed dword) 0 bool_not::@3/(byte) bool_not::i#1 ) [ bool_not::i#2 ] ( main:2::bool_not:9 [ bool_not::i#2 ] )
+  [29] (byte~) bool_not::$1 ← (byte) bool_not::i#2 & (byte/signed byte/word/signed word/dword/signed dword) 1 [ bool_not::i#2 bool_not::$1 ] ( main:2::bool_not:9 [ bool_not::i#2 bool_not::$1 ] )
+  [30] if((byte) bool_not::i#2<(byte/signed byte/word/signed word/dword/signed dword) 10) goto bool_not::@4 [ bool_not::i#2 bool_not::$1 ] ( main:2::bool_not:9 [ bool_not::i#2 bool_not::$1 ] )
   to:bool_not::@7
 bool_not::@7: scope:[bool_not]  from bool_not::@1
-  [30] if((byte~) bool_not::$3==(byte/signed byte/word/signed word/dword/signed dword) 0) goto bool_not::@4 [ bool_not::i#2 ] ( main:2::bool_not:9 [ bool_not::i#2 ] )
+  [31] if((byte~) bool_not::$1==(byte/signed byte/word/signed word/dword/signed dword) 0) goto bool_not::@4 [ bool_not::i#2 ] ( main:2::bool_not:9 [ bool_not::i#2 ] )
   to:bool_not::@2
 bool_not::@2: scope:[bool_not]  from bool_not::@7
-  [31] *((const byte*) bool_not::screen#0 + (byte) bool_not::i#2) ← (byte) '*' [ bool_not::i#2 ] ( main:2::bool_not:9 [ bool_not::i#2 ] )
+  [32] *((const byte*) bool_not::screen#0 + (byte) bool_not::i#2) ← (byte) '*' [ bool_not::i#2 ] ( main:2::bool_not:9 [ bool_not::i#2 ] )
   to:bool_not::@3
 bool_not::@3: scope:[bool_not]  from bool_not::@2 bool_not::@4
-  [32] (byte) bool_not::i#1 ← ++ (byte) bool_not::i#2 [ bool_not::i#1 ] ( main:2::bool_not:9 [ bool_not::i#1 ] )
-  [33] if((byte) bool_not::i#1!=(byte/signed byte/word/signed word/dword/signed dword) 21) goto bool_not::@1 [ bool_not::i#1 ] ( main:2::bool_not:9 [ bool_not::i#1 ] )
+  [33] (byte) bool_not::i#1 ← ++ (byte) bool_not::i#2 [ bool_not::i#1 ] ( main:2::bool_not:9 [ bool_not::i#1 ] )
+  [34] if((byte) bool_not::i#1!=(byte/signed byte/word/signed word/dword/signed dword) 21) goto bool_not::@1 [ bool_not::i#1 ] ( main:2::bool_not:9 [ bool_not::i#1 ] )
   to:bool_not::@return
 bool_not::@return: scope:[bool_not]  from bool_not::@3
-  [34] return  [ ] ( main:2::bool_not:9 [ ] )
+  [35] return  [ ] ( main:2::bool_not:9 [ ] )
   to:@return
 bool_not::@4: scope:[bool_not]  from bool_not::@1 bool_not::@7
-  [35] *((const byte*) bool_not::screen#0 + (byte) bool_not::i#2) ← (byte) ' ' [ bool_not::i#2 ] ( main:2::bool_not:9 [ bool_not::i#2 ] )
+  [36] *((const byte*) bool_not::screen#0 + (byte) bool_not::i#2) ← (byte) ' ' [ bool_not::i#2 ] ( main:2::bool_not:9 [ bool_not::i#2 ] )
   to:bool_not::@3
 bool_or: scope:[bool_or]  from main::@1
-  [36] phi() [ ] ( main:2::bool_or:7 [ ] )
+  [37] phi() [ ] ( main:2::bool_or:7 [ ] )
   to:bool_or::@1
 bool_or::@1: scope:[bool_or]  from bool_or bool_or::@3
-  [37] (byte) bool_or::i#2 ← phi( bool_or/(byte/signed byte/word/signed word/dword/signed dword) 0 bool_or::@3/(byte) bool_or::i#1 ) [ bool_or::i#2 ] ( main:2::bool_or:7 [ bool_or::i#2 ] )
-  [38] (byte~) bool_or::$1 ← (byte) bool_or::i#2 & (byte/signed byte/word/signed word/dword/signed dword) 1 [ bool_or::i#2 bool_or::$1 ] ( main:2::bool_or:7 [ bool_or::i#2 bool_or::$1 ] )
-  [39] if((byte) bool_or::i#2<(byte/signed byte/word/signed word/dword/signed dword) 10) goto bool_or::@2 [ bool_or::i#2 bool_or::$1 ] ( main:2::bool_or:7 [ bool_or::i#2 bool_or::$1 ] )
+  [38] (byte) bool_or::i#2 ← phi( bool_or/(byte/signed byte/word/signed word/dword/signed dword) 0 bool_or::@3/(byte) bool_or::i#1 ) [ bool_or::i#2 ] ( main:2::bool_or:7 [ bool_or::i#2 ] )
+  [39] (byte~) bool_or::$1 ← (byte) bool_or::i#2 & (byte/signed byte/word/signed word/dword/signed dword) 1 [ bool_or::i#2 bool_or::$1 ] ( main:2::bool_or:7 [ bool_or::i#2 bool_or::$1 ] )
+  [40] if((byte) bool_or::i#2<(byte/signed byte/word/signed word/dword/signed dword) 10) goto bool_or::@2 [ bool_or::i#2 bool_or::$1 ] ( main:2::bool_or:7 [ bool_or::i#2 bool_or::$1 ] )
   to:bool_or::@7
 bool_or::@7: scope:[bool_or]  from bool_or::@1
-  [40] if((byte~) bool_or::$1==(byte/signed byte/word/signed word/dword/signed dword) 0) goto bool_or::@2 [ bool_or::i#2 ] ( main:2::bool_or:7 [ bool_or::i#2 ] )
+  [41] if((byte~) bool_or::$1==(byte/signed byte/word/signed word/dword/signed dword) 0) goto bool_or::@2 [ bool_or::i#2 ] ( main:2::bool_or:7 [ bool_or::i#2 ] )
   to:bool_or::@4
 bool_or::@4: scope:[bool_or]  from bool_or::@7
-  [41] *((const byte*) bool_or::screen#0 + (byte) bool_or::i#2) ← (byte) ' ' [ bool_or::i#2 ] ( main:2::bool_or:7 [ bool_or::i#2 ] )
+  [42] *((const byte*) bool_or::screen#0 + (byte) bool_or::i#2) ← (byte) ' ' [ bool_or::i#2 ] ( main:2::bool_or:7 [ bool_or::i#2 ] )
   to:bool_or::@3
 bool_or::@3: scope:[bool_or]  from bool_or::@2 bool_or::@4
-  [42] (byte) bool_or::i#1 ← ++ (byte) bool_or::i#2 [ bool_or::i#1 ] ( main:2::bool_or:7 [ bool_or::i#1 ] )
-  [43] if((byte) bool_or::i#1!=(byte/signed byte/word/signed word/dword/signed dword) 21) goto bool_or::@1 [ bool_or::i#1 ] ( main:2::bool_or:7 [ bool_or::i#1 ] )
+  [43] (byte) bool_or::i#1 ← ++ (byte) bool_or::i#2 [ bool_or::i#1 ] ( main:2::bool_or:7 [ bool_or::i#1 ] )
+  [44] if((byte) bool_or::i#1!=(byte/signed byte/word/signed word/dword/signed dword) 21) goto bool_or::@1 [ bool_or::i#1 ] ( main:2::bool_or:7 [ bool_or::i#1 ] )
   to:bool_or::@return
 bool_or::@return: scope:[bool_or]  from bool_or::@3
-  [44] return  [ ] ( main:2::bool_or:7 [ ] )
+  [45] return  [ ] ( main:2::bool_or:7 [ ] )
   to:@return
 bool_or::@2: scope:[bool_or]  from bool_or::@1 bool_or::@7
-  [45] *((const byte*) bool_or::screen#0 + (byte) bool_or::i#2) ← (byte) '*' [ bool_or::i#2 ] ( main:2::bool_or:7 [ bool_or::i#2 ] )
+  [46] *((const byte*) bool_or::screen#0 + (byte) bool_or::i#2) ← (byte) '*' [ bool_or::i#2 ] ( main:2::bool_or:7 [ bool_or::i#2 ] )
   to:bool_or::@3
 bool_and: scope:[bool_and]  from main
-  [46] phi() [ ] ( main:2::bool_and:5 [ ] )
+  [47] phi() [ ] ( main:2::bool_and:5 [ ] )
   to:bool_and::@1
 bool_and::@1: scope:[bool_and]  from bool_and bool_and::@3
-  [47] (byte) bool_and::i#2 ← phi( bool_and/(byte/signed byte/word/signed word/dword/signed dword) 0 bool_and::@3/(byte) bool_and::i#1 ) [ bool_and::i#2 ] ( main:2::bool_and:5 [ bool_and::i#2 ] )
-  [48] (byte~) bool_and::$1 ← (byte) bool_and::i#2 & (byte/signed byte/word/signed word/dword/signed dword) 1 [ bool_and::i#2 bool_and::$1 ] ( main:2::bool_and:5 [ bool_and::i#2 bool_and::$1 ] )
-  [49] if((byte) bool_and::i#2<(byte/signed byte/word/signed word/dword/signed dword) 10) goto bool_and::@7 [ bool_and::i#2 bool_and::$1 ] ( main:2::bool_and:5 [ bool_and::i#2 bool_and::$1 ] )
+  [48] (byte) bool_and::i#2 ← phi( bool_and/(byte/signed byte/word/signed word/dword/signed dword) 0 bool_and::@3/(byte) bool_and::i#1 ) [ bool_and::i#2 ] ( main:2::bool_and:5 [ bool_and::i#2 ] )
+  [49] (byte~) bool_and::$1 ← (byte) bool_and::i#2 & (byte/signed byte/word/signed word/dword/signed dword) 1 [ bool_and::i#2 bool_and::$1 ] ( main:2::bool_and:5 [ bool_and::i#2 bool_and::$1 ] )
+  [50] if((byte) bool_and::i#2<(byte/signed byte/word/signed word/dword/signed dword) 10) goto bool_and::@7 [ bool_and::i#2 bool_and::$1 ] ( main:2::bool_and:5 [ bool_and::i#2 bool_and::$1 ] )
   to:bool_and::@4
 bool_and::@4: scope:[bool_and]  from bool_and::@1 bool_and::@7
-  [50] *((const byte*) bool_and::screen#0 + (byte) bool_and::i#2) ← (byte) ' ' [ bool_and::i#2 ] ( main:2::bool_and:5 [ bool_and::i#2 ] )
+  [51] *((const byte*) bool_and::screen#0 + (byte) bool_and::i#2) ← (byte) ' ' [ bool_and::i#2 ] ( main:2::bool_and:5 [ bool_and::i#2 ] )
   to:bool_and::@3
 bool_and::@3: scope:[bool_and]  from bool_and::@2 bool_and::@4
-  [51] (byte) bool_and::i#1 ← ++ (byte) bool_and::i#2 [ bool_and::i#1 ] ( main:2::bool_and:5 [ bool_and::i#1 ] )
-  [52] if((byte) bool_and::i#1!=(byte/signed byte/word/signed word/dword/signed dword) 21) goto bool_and::@1 [ bool_and::i#1 ] ( main:2::bool_and:5 [ bool_and::i#1 ] )
+  [52] (byte) bool_and::i#1 ← ++ (byte) bool_and::i#2 [ bool_and::i#1 ] ( main:2::bool_and:5 [ bool_and::i#1 ] )
+  [53] if((byte) bool_and::i#1!=(byte/signed byte/word/signed word/dword/signed dword) 21) goto bool_and::@1 [ bool_and::i#1 ] ( main:2::bool_and:5 [ bool_and::i#1 ] )
   to:bool_and::@return
 bool_and::@return: scope:[bool_and]  from bool_and::@3
-  [53] return  [ ] ( main:2::bool_and:5 [ ] )
+  [54] return  [ ] ( main:2::bool_and:5 [ ] )
   to:@return
 bool_and::@7: scope:[bool_and]  from bool_and::@1
-  [54] if((byte~) bool_and::$1==(byte/signed byte/word/signed word/dword/signed dword) 0) goto bool_and::@2 [ bool_and::i#2 ] ( main:2::bool_and:5 [ bool_and::i#2 ] )
+  [55] if((byte~) bool_and::$1==(byte/signed byte/word/signed word/dword/signed dword) 0) goto bool_and::@2 [ bool_and::i#2 ] ( main:2::bool_and:5 [ bool_and::i#2 ] )
   to:bool_and::@4
 bool_and::@2: scope:[bool_and]  from bool_and::@7
-  [55] *((const byte*) bool_and::screen#0 + (byte) bool_and::i#2) ← (byte) '*' [ bool_and::i#2 ] ( main:2::bool_and:5 [ bool_and::i#2 ] )
+  [56] *((const byte*) bool_and::screen#0 + (byte) bool_and::i#2) ← (byte) '*' [ bool_and::i#2 ] ( main:2::bool_and:5 [ bool_and::i#2 ] )
   to:bool_and::@3

src/test/java/dk/camelot64/kickc/test/ref/bool-vars.sym

@@ -12,11 +12,13 @@
 (byte) bool_and::i
 (byte) bool_and::i#1 reg byte x 16.5
 (byte) bool_and::i#2 reg byte x 11.0
+(boolean) bool_and::o1
+(boolean) bool_and::o2
+(boolean) bool_and::o3
 (byte*) bool_and::screen
 (const byte*) bool_and::screen#0 screen = ((byte*))(word/signed word/dword/signed dword) 1024
 (void()) bool_complex()
-(byte~) bool_complex::$3 reg byte x 7.333333333333333
-(byte~) bool_complex::$7 reg byte a 5.5
+(byte~) bool_complex::$1 reg byte a 22.0
 (label) bool_complex::@1
 (label) bool_complex::@2
 (label) bool_complex::@3
@@ -26,12 +28,19 @@
 (label) bool_complex::@9
 (label) bool_complex::@return
 (byte) bool_complex::i
-(byte) bool_complex::i#1 reg byte y 16.5
-(byte) bool_complex::i#2 reg byte y 9.777777777777779
+(byte) bool_complex::i#1 reg byte x 16.5
+(byte) bool_complex::i#2 reg byte x 6.6
+(boolean) bool_complex::o1
+(boolean) bool_complex::o1#0 o1 zp ZP_BOOL:2 6.6000000000000005
+(boolean) bool_complex::o2
+(boolean) bool_complex::o2#0 o2 zp ZP_BOOL:3 8.25
+(boolean) bool_complex::o3
+(boolean) bool_complex::o4
+(boolean) bool_complex::o5
 (byte*) bool_complex::screen
 (const byte*) bool_complex::screen#0 screen = ((byte*))(word/signed word/dword/signed dword) 1144
 (void()) bool_not()
-(byte~) bool_not::$3 reg byte a 11.0
+(byte~) bool_not::$1 reg byte a 11.0
 (label) bool_not::@1
 (label) bool_not::@2
 (label) bool_not::@3
@@ -41,6 +50,9 @@
 (byte) bool_not::i
 (byte) bool_not::i#1 reg byte x 16.5
 (byte) bool_not::i#2 reg byte x 11.0
+(boolean) bool_not::o1
+(boolean) bool_not::o2
+(boolean) bool_not::o3
 (byte*) bool_not::screen
 (const byte*) bool_not::screen#0 screen = ((byte*))(word/signed word/dword/signed dword) 1104
 (void()) bool_or()
@@ -54,6 +66,9 @@
 (byte) bool_or::i
 (byte) bool_or::i#1 reg byte x 16.5
 (byte) bool_or::i#2 reg byte x 11.0
+(boolean) bool_or::o1
+(boolean) bool_or::o2
+(boolean) bool_or::o3
 (byte*) bool_or::screen
 (const byte*) bool_or::screen#0 screen = ((byte*))(word/signed word/dword/signed dword) 1064
 (void()) main()
@@ -62,12 +77,13 @@
 (label) main::@3
 (label) main::@return
 
-reg byte y [ bool_complex::i#2 bool_complex::i#1 ]
+reg byte x [ bool_complex::i#2 bool_complex::i#1 ]
 reg byte x [ bool_not::i#2 bool_not::i#1 ]
 reg byte x [ bool_or::i#2 bool_or::i#1 ]
 reg byte x [ bool_and::i#2 bool_and::i#1 ]
-reg byte x [ bool_complex::$3 ]
-reg byte a [ bool_complex::$7 ]
-reg byte a [ bool_not::$3 ]
+zp ZP_BOOL:2 [ bool_complex::o1#0 ]
+reg byte a [ bool_complex::$1 ]
+zp ZP_BOOL:3 [ bool_complex::o2#0 ]
+reg byte a [ bool_not::$1 ]
 reg byte a [ bool_or::$1 ]
 reg byte a [ bool_and::$1 ]