@begin: scope:[]  from
  [0] phi()
  to:@1
@1: scope:[]  from @begin
  [1] phi()
  [2] call main 
  to:@end
@end: scope:[]  from @1
  [3] phi()
main: scope:[main]  from @1
  [4] phi()
  to:main::@1
main::@1: scope:[main]  from main main::@3
  [5] (byte) main::idx#3 ← phi( main/(byte) 0 main::@3/(byte) main::idx#1 )
  [5] (byte) main::a#4 ← phi( main/(byte) 0 main::@3/(byte) main::a#1 )
  to:main::@2
main::@2: scope:[main]  from main::@1 main::@2
  [6] (byte) main::idx#2 ← phi( main::@1/(byte) main::idx#3 main::@2/(byte) main::idx#1 )
  [6] (byte) main::d#0 ← phi( main::@1/(byte) 0 main::@2/(byte) main::b#1 )
  [7] (byte) main::e#0 ← (byte) main::d#0 + (byte) main::a#4
  [8] (byte) main::f#0 ← (byte) main::d#0 + (byte) main::a#4
  [9] (byte) main::g#0 ← (byte) main::e#0 + (byte) main::f#0
  [10] *((const byte*) main::SCREEN#0 + (byte) main::idx#2) ← (byte) main::g#0
  [11] (byte) main::idx#1 ← ++ (byte) main::idx#2
  [12] (byte) main::b#1 ← ++ (byte) main::d#0
  [13] if((byte) main::b#1!=(byte) 6) goto main::@2
  to:main::@3
main::@3: scope:[main]  from main::@2
  [14] (byte) main::a#1 ← ++ (byte) main::a#4
  [15] if((byte) main::a#1!=(byte) 6) goto main::@1
  to:main::@return
main::@return: scope:[main]  from main::@3
  [16] return 
  to:@return
