[Bug target/113857] fmov should be used to zero the upper bits of the vector register

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113857

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Assignee|unassigned at gcc dot gnu.org      |pinskia at gcc dot 
gnu.org

--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Trying 10 -> 11:
   10: r104:V4SF=const_vector
   11: r104:V4SF=vec_merge(vec_duplicate(r107:SF),r104:V4SF,0x1)
      REG_DEAD r107:SF
Failed to match this instruction:
(set (reg:V4SF 104 [ _2 ])
    (vec_merge:V4SF (vec_duplicate:V4SF (reg:SF 107 [ a ]))
        (const_vector:V4SF [
                (const_double:SF 0.0 [0x0.0p+0]) repeated x4
            ])
        (const_int 1 [0x1])))


Same as PR 113858 and PR 117092.