[Bug tree-optimization/51492] vectorizer does not support saturated arithmetic patterns

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=51492

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |missed-optimization
   Last reconfirmed|2011-12-12 00:00:00         |2016-1-4
      Known to fail|                            |6.0
              Build|x86_64-linux                |x86_64-linux
                   |                            |aarch64-linux-gnu

--- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
AARCH64 could produce SQSUB instead of the following code:
        add     v1.8h, v0.8h, v3.8h
        cmhi    v0.8h, v0.8h, v2.8h
        and     v0.16b, v1.16b, v0.16b