[Bug optimization/7270] Redundant compares not eliminated on x86.

["pinskia at physics dot uc dot edu" <gcc-bugzilla at gcc dot gnu dot org>]

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=7270


pinskia@physics.uc.edu changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|WAITING                     |SUSPENDED


------- Additional Comments From pinskia@physics.uc.edu  2003-06-05 02:29 -------
This still exists on the tree-ssa branch it converts the function to
foo (a)
{
  unsigned int T.1;
  unsigned int * T.2;
  unsigned int * T.3;
  unsigned int T.4;

  {
    unsigned int i;

    while (1)
      {
        T.3 = a;
        T.4 = *T.3;
        if (T.4 == 0)
          {
            return 9;
          }
        else
          {
            return 15;
          }
      }
  }
}

So it looks like it is really fixed on the tree-ssa branch (it gets rid of the loop also).




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