
void main()
main: scope:[main]  from
  [0] phi()
  to:main::@1
main::@1: scope:[main]  from main main::@3
  [1] main::x#2 = phi( main/0, main::@3/main::x#1 )
  [2] if(main::x#2<$fe) goto main::@2
  to:main::@return
main::@return: scope:[main]  from main::@1
  [3] return 
  to:@return
main::@2: scope:[main]  from main::@1
  [4] phi()
  [5] call incscreen
  to:main::@3
main::@3: scope:[main]  from main::@2
  [6] main::x#1 = ++ main::x#2
  to:main::@1

void incscreen(unsigned int ptr)
incscreen: scope:[incscreen]  from main::@2
  [7] *(screen+main::offset) = -- *(screen+main::offset)
  [8] *(screen+main::offset+1) = -- *(screen+main::offset+1)
  [9] *(screen+main::offset) = ++ *(screen+main::offset)
  [10] *(screen+main::offset+1) = ++ *(screen+main::offset+1)
  to:incscreen::@return
incscreen::@return: scope:[incscreen]  from incscreen
  [11] return 
  to:@return
