
void main()
main: scope:[main]  from
  [0] phi()
  to:main::first
main::first: scope:[main]  from main main::@2
  [1] main::i#2 = phi( main/0, main::@2/main::i#1 )
  [2] *(main::SCREEN+$28) = ++ *(main::SCREEN+$28)
  [3] main::i#1 = ++ main::i#2
  to:main::@1
main::@1: scope:[main]  from main::first
  [4] if(main::i#1<$a) goto main::@2
  to:main::@return
main::@return: scope:[main]  from main::@1
  [5] return 
  to:@return
main::@2: scope:[main]  from main::@1
  [6] main::SCREEN[main::i#1] = '*'
  to:main::first
