[Bug middle-end/98420] Invalid simplification of x - x with -frounding-math

[rguenth at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98420

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |wrong-code
     Ever confirmed|0                           |1
          Component|tree-optimization           |middle-end
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2021-01-05

--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
probably conditional on HONOR_SIGNED_ZEROS.