@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] (byte) main::i#2 ← phi( main/(byte) 0 main::@1/(byte) main::i#1 )
  [5] (byte) main::idx#4 ← phi( main/(byte) 0 main::@1/(byte) main::idx#3 )
  [5] (word*) main::wp#2 ← phi( main/(const word*) main::words main::@1/(word*) main::wp#1 )
  [6] (word) main::w#0 ← *((word*) main::wp#2)
  [7] (word*) main::wp#1 ← (word*) main::wp#2 + (const byte) SIZEOF_WORD
  [8] (byte~) main::$0 ← < (word) main::w#0
  [9] *((const byte*) main::SCREEN + (byte) main::idx#4) ← (byte~) main::$0
  [10] (byte) main::idx#1 ← ++ (byte) main::idx#4
  [11] (byte~) main::$1 ← > (word) main::w#0
  [12] *((const byte*) main::SCREEN + (byte) main::idx#1) ← (byte~) main::$1
  [13] (byte) main::idx#2 ← ++ (byte) main::idx#1
  [14] (byte) main::idx#3 ← ++ (byte) main::idx#2
  [15] (byte) main::i#1 ← ++ (byte) main::i#2
  [16] if((byte) main::i#1!=(byte) 4) goto main::@1
  to:main::@return
main::@return: scope:[main]  from main::@1
  [17] return 
  to:@return
