[Bug tree-optimization/61051] Duplicated instructions in both conditional branches

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61051

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|target                      |tree-optimization
             Status|WAITING                     |RESOLVED
         Resolution|---                         |FIXED
   Target Milestone|---                         |10.0
           Keywords|                            |missed-optimization

--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Fixed on the trunk:
  x.0_4 = x;
  if (_3 != x.0_4)
    goto <bb 5>; [66.00%]
  else
    goto <bb 4>; [34.00%]

  <bb 4> [local count: 195204118]:

  <bb 5> [local count: 574129753]:
  # prephitmp_24 = PHI <1(3), 2(4)>
  r.1_5 = r;
  pretmp_26 = d;
  if (r.1_5 > 0)
    goto <bb 6>; [59.00%]
  else
    goto <bb 7>; [41.00%]

  <bb 6> [local count: 338736556]:
  f_18 = pretmp_26 + 1;

  <bb 7> [local count: 574129754]:
  # f_9 = PHI <f_18(6), pretmp_26(5)>

I think it has been fixed in since at least GCC 10 even.