
void main()
main: scope:[main]  from
  [0] phi()
  to:main::@1
main::@1: scope:[main]  from main main::@3
  [1] main::c1#4 = phi( main/0, main::@3/main::c1#1 )
  [1] idx#9 = phi( main/0, main::@3/idx#0 )
  to:main::@2
main::@2: scope:[main]  from main::@1 main::@2
  [2] main::c2#2 = phi( main::@1/0, main::@2/main::c2#1 )
  [2] idx#5 = phi( main::@1/idx#9, main::@2/idx#0 )
  [3] SCREEN[idx#5] = '*'
  [4] idx#0 = ++ idx#5
  [5] main::c2#1 = ++ main::c2#2
  [6] if(main::c2#1!=$b) goto main::@2
  to:main::@3
main::@3: scope:[main]  from main::@2
  [7] main::c1#1 = ++ main::c1#4
  [8] if(main::c1#1!=$b) goto main::@1
  to:main::@return
main::@return: scope:[main]  from main::@3
  [9] return 
  to:@return
