
void main()
main: scope:[main]  from
  [0] phi()
  to:main::@1
main::@1: scope:[main]  from main main::@2
  [1] main::i#2 = phi( main/0, main::@2/main::i#1 )
  to:main::@2
main::@2: scope:[main]  from main::@1
  [2] main::i#1 = ++ main::i#2
  [3] main::$0 = main::i#1 & 1
  [4] main::$2 = main::$0 << 1
  [5] main::f#0 = fns[main::$2]
  [6] callexecute *main::f#0 
  to:main::@1

void fn2()
fn2: scope:[fn2]  from
  [7] *fn2::BG_COLOR = ++ *fn2::BG_COLOR
  to:fn2::@return
fn2::@return: scope:[fn2]  from fn2
  [8] return 
  to:@return

void fn1()
fn1: scope:[fn1]  from
  [9] *fn1::BORDER_COLOR = ++ *fn1::BORDER_COLOR
  to:fn1::@return
fn1::@return: scope:[fn1]  from fn1
  [10] return 
  to:@return
