@begin: scope:[]  from
  [0] phi()
  to:@1
@1: scope:[]  from @begin
  [1] phi()
  [2] call main 
  to:@end
@end: scope:[]  from @1
  [3] phi()
main: scope:[main]  from @1
  [4] phi()
  [5] call bool_const_if 
  to:main::@1
main::@1: scope:[main]  from main
  [6] phi()
  [7] call bool_const_vars 
  to:main::@2
main::@2: scope:[main]  from main::@1
  [8] phi()
  [9] call bool_const_inline 
  to:main::@return
main::@return: scope:[main]  from main::@2
  [10] return 
  to:@return
bool_const_inline: scope:[bool_const_inline]  from main::@2
  [11] phi()
  to:bool_const_inline::@1
bool_const_inline::@1: scope:[bool_const_inline]  from bool_const_inline
  [12] *((const byte*) SCREEN#0+(byte) 2) ← (byte) 't'
  to:bool_const_inline::@return
bool_const_inline::@return: scope:[bool_const_inline]  from bool_const_inline::@1
  [13] return 
  to:@return
bool_const_vars: scope:[bool_const_vars]  from main::@1
  [14] phi()
  to:bool_const_vars::@1
bool_const_vars::@1: scope:[bool_const_vars]  from bool_const_vars
  [15] *((const byte*) SCREEN#0+(byte) 1) ← (byte) 'f'
  to:bool_const_vars::@return
bool_const_vars::@return: scope:[bool_const_vars]  from bool_const_vars::@1
  [16] return 
  to:@return
bool_const_if: scope:[bool_const_if]  from main
  [17] phi()
  to:bool_const_if::@1
bool_const_if::@1: scope:[bool_const_if]  from bool_const_if
  [18] *((const byte*) SCREEN#0) ← (byte) 't'
  to:bool_const_if::@return
bool_const_if::@return: scope:[bool_const_if]  from bool_const_if::@1
  [19] return 
  to:@return
