[Bug other/22320] New: -ftree-dominator-opts documentation is the same as -ftree-dce

["flash at pobox dot com" <gcc-bugzilla at gcc dot gnu dot org>]

The GCC 4.0.0 documentation, page 71 in the PostScript version, 
<http://gcc.gnu.org/onlinedocs/gcc-4.0.0/gcc/Optimize-Options.html#Optimize-Options>
in the HTML version, says the following:

-ftree-dce
Perform dead code elimination (DCE) on trees. This flag is enabled by default at -O and higher. 
-ftree-dominator-opts
Perform dead code elimination (DCE) on trees. This flag is enabled by default at -O and higher. 

Dominator options seem to be different from dead code, so presumably these are different.  
Alternatively, if they have the same behavior under different names, that should be noted explicitly, as 
it is elsewhere for such options.

-- 
           Summary: -ftree-dominator-opts documentation is the same as -
                    ftree-dce
           Product: gcc
           Version: 4.0.0
            Status: UNCONFIRMED
          Severity: minor
          Priority: P3
         Component: other
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: flash at pobox dot com
                CC: gcc-bugs at gcc dot gnu dot org
 GCC build triplet: GCC 4.0.0 documentation
  GCC host triplet: n/a
GCC target triplet: n/a


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22320