
void main()
main: scope:[main]  from
  [0] phi()
  [1] call print
  to:main::@1
main::@1: scope:[main]  from main
  [2] phi()
  [3] call print
  to:main::@return
main::@return: scope:[main]  from main::@1
  [4] return 
  to:@return

void print(const char c)
print: scope:[print]  from main main::@1
  [5] print::c#2 = phi( main/'a', main::@1/'b' )
  [6] *SCREEN = print::c#2
  to:print::@return
print::@return: scope:[print]  from print
  [7] return 
  to:@return
