[Bug tree-optimization/68136] missed tree-level optimization with redundant computations

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68136

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Last reconfirmed|2015-10-28 00:00:00         |2021-7-26

--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Improved for GCC 11 by r11-3207 . The testcase even was changed to show that it
is not fully fixed:

typedef long long s64;
int
foo (s64 a, s64 b, s64 c)
{
 s64 d = a - b;

  if (d == 0)
    return a + c;
  else
    return b + c + d;
}