@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] (byte) main::i ← (byte) 0
  to:main::@1
main::@1: scope:[main]  from main main::@1
  [5] (byte*) screen#6 ← phi( main/(byte*) 1024 main::@1/(byte*) screen#3 )
  [6] *((byte*) screen#6) ← (const byte) a
  [7] (byte*) screen#1 ← ++ (byte*) screen#6
  [8] *((byte*) screen#1) ← (const byte) main::b
  [9] (byte*) screen#2 ← ++ (byte*) screen#1
  [10] *((byte*) screen#2) ← (byte) main::i
  [11] (byte*) screen#3 ← ++ (byte*) screen#2
  [12] (byte) main::i ← ++ (byte) main::i
  [13] if((byte) main::i!=(byte) 6) goto main::@1
  to:main::@return
main::@return: scope:[main]  from main::@1
  [14] return 
  to:@return
