
void main()
main: scope:[main]  from
  [0] phi()
  to:main::@1
main::@1: scope:[main]  from main main::@5
  [1] main::i#2 = phi( main/0, main::@5/main::i#1 )
  [2] if(main::i#2==1) goto main::@2
  to:main::@6
main::@6: scope:[main]  from main::@1
  [3] if(main::i#2==4) goto main::@2
  to:main::@3
main::@3: scope:[main]  from main::@6
  [4] main::SCREEN[main::i#2] = 'a'
  to:main::@5
main::@5: scope:[main]  from main::@3 main::@4
  [5] main::i#1 = ++ main::i#2
  [6] if(main::i#1!=6) goto main::@1
  to:main::@return
main::@return: scope:[main]  from main::@5
  [7] return 
  to:@return
main::@2: scope:[main]  from main::@1 main::@6
  [8] main::SCREEN[main::i#2] = '1'
  to:main::@4
main::@4: scope:[main]  from main::@2
  [9] main::SCREEN[main::i#2] = main::SCREEN[main::i#2] | $80
  to:main::@5
