[Bug tree-optimization/58686] vect_get_loop_niters() fails for some loops

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58686

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

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

--- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Confirmed.

#define N 5
void foo(int* a, unsigned int i)
{
  int j = 0;
  do
  {
    a[j++] = 0;
    i -= 4;
  }
  while (i >= N);
}

---- CUT ---
LLVM can convert the above loop into a memset while GCC does not.