[Bug tree-optimization/95821] Failure to optimize strchr to use memchr for string constant

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95821

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
           Severity|normal                      |enhancement
     Ever confirmed|0                           |1
   Last reconfirmed|                            |2021-12-22

--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Confirmed.
Though for small strings it might even make sense to inline it, eg.:
auto f(char c)
{
    return strchr("123", c);
}
to
auto f(char c)
{
  auto t = "123";
  int t1;
  switch (c)
    {
       case '1':
         t1 = 1;
       case '2':
         t1 = 2;
       case '3':
         t1 = 3;
       default:
         t = 0;
         return t;
    }
   return t+t1;
}