[Bug tree-optimization/53991] _mm_popcnt_u64 fails with -O3 -fgnu-tm

[ubizjak at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53991

Uroš Bizjak <ubizjak at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |hubicka at gcc dot gnu.org

--- Comment #3 from Uroš Bizjak <ubizjak at gmail dot com> ---
Actually, the difference begins in _c.018t.einline.

-O2 -fgnu-tm:

;; Function main (main, funcdef_no=1, decl_uid=1878, symbol_order=1)

  not inlinable: main/1 -> _mm_popcnt_u64/0, 
Considering inline candidate _mm_popcnt_u64.
  not inlinable: main/1 -> _mm_popcnt_u64/0, 
Iterations: 0
main ()
{
  int res;
  int _4;

  <bb 2>:
  res_1 = _mm_popcnt_u64 (0);
  printf ("Result res should be 0: %d\n", res_1);
  _4 = 0;
  return _4;

}

-O2:

;; Function main (main, funcdef_no=1, decl_uid=1722, symbol_order=1)

  Inlining _mm_popcnt_u64 into main (always_inline).
Iterations: 0
Merging blocks 2 and 4
Merging blocks 2 and 3

Symbols to be put in SSA form
{ D.1735 }
Incremental SSA update started at block: 0
Number of blocks in CFG: 3
Number of blocks to update: 2 ( 67%)


main ()
{
  int D.1735;
  int res;
  int _4;
  int _5;

  <bb 2>:
  _5 = 0;
  _6 = _5;
  res_1 = _6;
  printf ("Result res should be 0: %d\n", res_1);
  _4 = 0;
  return _4;

}

Adding CC.