
void main()
main: scope:[main]  from
  [0] phi()
  [1] call incw1
  to:main::@1
main::@1: scope:[main]  from main
  [2] phi()
  [3] call incw2
  to:main::@2
main::@2: scope:[main]  from main::@1
  [4] phi()
  [5] call incw1
  to:main::@3
main::@3: scope:[main]  from main::@2
  [6] phi()
  [7] call incw2
  to:main::@4
main::@4: scope:[main]  from main::@3
  [8] *main::SCREEN = w1#13
  [9] *(main::SCREEN+2*SIZEOF_UNSIGNED_INT) = w2#12
  to:main::@return
main::@return: scope:[main]  from main::@4
  [10] return 
  to:@return

void incw1()
incw1: scope:[incw1]  from main main::@2
  [11] w1#12 = phi( main/0, main::@2/w1#13 )
  [12] w1#13 = ++ w1#12
  to:incw1::@return
incw1::@return: scope:[incw1]  from incw1
  [13] return 
  to:@return

void incw2()
incw2: scope:[incw2]  from main::@1 main::@3
  [14] w2#11 = phi( main::@1/0, main::@3/w2#12 )
  [15] w2#12 = ++ w2#11
  to:incw2::@return
incw2::@return: scope:[incw2]  from incw2
  [16] return 
  to:@return
