@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::row#4 ← phi( main/(byte) 0 main::@3/(byte) main::row#1 )
  [5] (byte*) main::colors#4 ← phi( main/(byte*) 55296 main::@3/(byte*) main::colors#1 )
  [5] (byte) main::color#5 ← phi( main/(byte) 1 main::@3/(byte) main::color#2 )
  [5] (byte*) main::screen#4 ← phi( main/(byte*) 1024 main::@3/(byte*) main::screen#1 )
  to:main::@2
main::@2: scope:[main]  from main::@1 main::@2
  [6] (byte) main::color#3 ← phi( main::@1/(byte) main::color#5 main::@2/(byte) main::color#1 )
  [6] (byte) main::column#2 ← phi( main::@1/(byte) 0 main::@2/(byte) main::column#1 )
  [7] *((byte*) main::screen#4 + (byte) main::column#2) ← (byte) $a0
  [8] *((byte*) main::colors#4 + (byte) main::column#2) ← (byte) main::color#3
  [9] (byte) main::color#1 ← (byte) main::color#3 ^ (byte) 1
  [10] (byte) main::column#1 ← ++ (byte) main::column#2
  [11] if((byte) main::column#1!=(byte) 8) goto main::@2
  to:main::@3
main::@3: scope:[main]  from main::@2
  [12] (byte) main::color#2 ← (byte) main::color#1 ^ (byte) 1
  [13] (byte*) main::screen#1 ← (byte*) main::screen#4 + (byte) $28
  [14] (byte*) main::colors#1 ← (byte*) main::colors#4 + (byte) $28
  [15] (byte) main::row#1 ← ++ (byte) main::row#4
  [16] if((byte) main::row#1!=(byte) 8) goto main::@1
  to:main::@return
main::@return: scope:[main]  from main::@3
  [17] return 
  to:@return
