@begin: scope:[]  from
  [0] phi()
  to:@1
@1: scope:[]  from @begin
  [1] phi()
  [2] call main 
  to:@end
@end: scope:[]  from @1
  [3] phi()

(void()) main()
main: scope:[main]  from @1
  [4] phi()
  to:main::@1
main::@1: scope:[main]  from main main::@1
  [5] (word) main::i#2 ← phi( main/(word) 0 main::@1/(word) main::i#1 )
  [5] (byte*) main::screen#2 ← phi( main/(byte*) 1024 main::@1/(byte*) main::screen#1 )
  [6] (byte~) main::$3 ← *((byte*) main::screen#2) << (byte) 1
  [7] (byte~) main::$4 ← *((byte*) main::screen#2) << (byte) 1
  [8] *((const word*) CHAR_COUNTS + (byte~) main::$4) ← ++ *((const word*) CHAR_COUNTS + (byte~) main::$3)
  [9] (byte*) main::screen#1 ← ++ (byte*) main::screen#2
  [10] (word) main::i#1 ← ++ (word) main::i#2
  [11] if((word) main::i#1!=(word) $3e8) goto main::@1
  to:main::@return
main::@return: scope:[main]  from main::@1
  [12] return 
  to:@return
