[Bug tree-optimization/32648] missed-optimization: bit-manipulation via bool's

[rguenth at gcc dot gnu dot org]

------- Comment #1 from rguenth at gcc dot gnu dot org  2007-07-06 12:54 -------
Confirmed.  This needs VRP of bits.  The IL we generate is currently

  bool b3;
  bool b5;
  int D.2483;
  int D.2482;
  int D.2481;

<bb 2>:
  D.2481_2 = a_1(D) & 32;
  b5_3 = D.2481_2 != 0;
  D.2482_4 = a_1(D) & 8;
  b3_5 = D.2482_4 != 0;
  D.2483_6 = b5_3 != b3_5;
  return D.2483_6;


-- 

rguenth at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
          Component|c++                         |tree-optimization
     Ever Confirmed|0                           |1
           Keywords|                            |missed-optimization
   Last reconfirmed|0000-00-00 00:00:00         |2007-07-06 12:54:02
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32648