[Bug middle-end/31098] New: a*C == b*C is not foldded to a == b with --fast-math/floating point

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

The following two functions should be equalivant with --fast-math:
int f(float a, float b)
{
  return a*10 == b*10;
}
int f1(float a, float b)
{
  return a == b;
}


-- 
           Summary: a*C == b*C is not foldded to a == b with --fast-
                    math/floating point
           Product: gcc
           Version: 4.3.0
            Status: UNCONFIRMED
          Keywords: missed-optimization
          Severity: enhancement
          Priority: P3
         Component: middle-end
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: pinskia at gcc dot gnu dot org
OtherBugsDependingO 19987
             nThis:


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31098