[Bug tree-optimization/80617] [missed optimization] Storing constant in two possibly-aliased locations

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80617

--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> ---
C testcase:

int foo (int *p, int *q)
{    
  *p = 1;
  *q = 1;
  return *p;
}