
void main()
main: scope:[main]  from
  [0] phi()
  to:main::@1
main::@1: scope:[main]  from main main::@2
  [1] idx#19 = phi( main/0, main::@2/idx#16 )
  [1] main::c#2 = phi( main/0, main::@2/main::c#1 )
  [2] out2::c#0 = main::c#2
  [3] call out2
  to:main::@2
main::@2: scope:[main]  from main::@1
  [4] main::c#1 = ++ main::c#2
  [5] if(main::c#1!=$28) goto main::@1
  to:main::@return
main::@return: scope:[main]  from main::@2
  [6] return 
  to:@return

void out2(char c)
out2: scope:[out2]  from main::@1
  [7] out::c#0 = out2::c#0
  [8] call out
  to:out2::@1
out2::@1: scope:[out2]  from out2
  [9] out::c#1 = out2::c#0
  [10] call out
  to:out2::@return
out2::@return: scope:[out2]  from out2::@1
  [11] return 
  to:@return

void out(char c)
out: scope:[out]  from out2 out2::@1
  [12] out::c#2 = phi( out2/out::c#0, out2::@1/out::c#1 )
  [12] idx#15 = phi( out2/idx#19, out2::@1/idx#16 )
  [13] idx#16 = ++ idx#15
  [14] SCREEN[idx#16] = out::c#2
  to:out::@return
out::@return: scope:[out]  from out
  [15] return 
  to:@return
