
void main()
main: scope:[main]  from
  [0] phi()
  to:main::@1
main::@1: scope:[main]  from main main::@2 main::@3
  [1] key#0 = *DC00
  [2] main::$1 = key#0 & $1f
  [3] if(key#0!=0) goto main::@2
  to:main::@3
main::@3: scope:[main]  from main::@1
  [4] if(main::$1==$1f) goto main::@1
  to:main::@2
main::@2: scope:[main]  from main::@1 main::@3
  [5] phi()
  to:main::@1
