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::@2
main::@2: scope:[main]  from main::@1
  [4] phi()
  [5] call print 
  to:main::@return
main::@return: scope:[main]  from main::@2
  [6] return 
  to:@return

void print(byte* print::msg)
print: scope:[print]  from main main::@1 main::@2
  [7] screen#20 = phi( main/(byte*) 1024, main::@1/screen#13, main::@2/screen#13 )
  [7] print::msg#6 = phi( main/msg1, main::@1/main::msg2, main::@2/main::msg )
  to:print::@1
print::@1: scope:[print]  from print print::@2
  [8] screen#13 = phi( print/screen#20, print::@2/screen#4 )
  [8] print::msg#4 = phi( print/print::msg#6, print::@2/print::msg#3 )
  [9] if(0!=*print::msg#4) goto print::@2
  to:print::@return
print::@return: scope:[print]  from print::@1
  [10] return 
  to:@return
print::@2: scope:[print]  from print::@1
  [11] *screen#13 = *print::msg#4
  [12] screen#4 = ++ screen#13
  [13] print::msg#3 = ++ print::msg#4
  to:print::@1