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