[Bug rtl-optimization/64713] Missed ccmp optimization

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64713

--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Here is a testcase which shows one of the issues with removing the optimization
inside expand:
int foo_c (int a, int b)
{
  if (a > 9 && b < 34)
    return 4;
  else
    return 26;
}

if the code was:
int foo_c (int a, int b, int c, int d)
{
  if (a > 9 && b < 34)
    return c;
  else
    return d;
}

--- CUT ---
We would optimize out the cset.