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