
void main()
main: scope:[main]  from
  [0] phi()
  to:main::@1
main::@1: scope:[main]  from main main::@4 main::@5
  [1] main::b#2 = phi( main/2, main::@4/main::b#2, main::@5/main::b#1 )
  [1] main::a#2 = phi( main/$80, main::@4/main::a#1, main::@5/main::a#2 )
  [2] if(main::a#2!=main::b#2) goto main::@2
  to:main::@3
main::@3: scope:[main]  from main::@1
  [3] *SCREEN = main::a#2
  to:main::@return
main::@return: scope:[main]  from main::@3
  [4] return 
  to:@return
main::@2: scope:[main]  from main::@1
  [5] if(main::a#2>main::b#2) goto main::@4
  to:main::@5
main::@5: scope:[main]  from main::@2
  [6] main::b#1 = main::b#2 - main::a#2
  to:main::@1
main::@4: scope:[main]  from main::@2
  [7] main::a#1 = main::a#2 - main::b#2
  to:main::@1
