[Bug tree-optimization/120903] Alias information not used to optimize out hand-written buffer aliasing checks

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120903

--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
I think this is by designed.


  __od.0_5 = (long unsigned int) &r;
  __os.1_6 = (long unsigned int) a_2(D);
  if (__od.0_5 < __os.1_6)


Can't be optimized away.