
void main()
main: scope:[main]  from
  [0] phi()
  to:main::@1
main::@1: scope:[main]  from main main::@1
  [1] main::msg#4 = phi( main/MESSAGE, main::@1/main::msg#1 )
  [2] main::$0 = *main::msg#4
  [3] main::msg#1 = ++ main::msg#4
  [4] if(0!=main::$0) goto main::@1
  to:main::@2
main::@2: scope:[main]  from main::@1
  [5] main::msg#2 = -- main::msg#1
  [6] *main::msg#2 = 'x'
  [7] main::msg#3 = ++ main::msg#2
  [8] *main::msg#3 = 0
  to:main::@3
main::@3: scope:[main]  from main::@2 main::@4
  [9] main::i#2 = phi( main::@2/0, main::@4/main::i#1 )
  [10] if(0!=MESSAGE[main::i#2]) goto main::@4
  to:main::@return
main::@return: scope:[main]  from main::@3
  [11] return 
  to:@return
main::@4: scope:[main]  from main::@3
  [12] SCREEN[main::i#2] = MESSAGE[main::i#2]
  [13] main::i#1 = ++ main::i#2
  to:main::@3
