[Bug tree-optimization/58497] SLP vectorizes identical operations

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58497

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
             Status|NEW                         |ASSIGNED

--- Comment #13 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Mine for GCC 13, I have patches which turn:

  W_6 = BIT_INSERT_EXPR <W_5(D), _2, 96 (32 bits)>;
  W_7 = BIT_INSERT_EXPR <W_6, _2, 64 (32 bits)>;
  W_8 = BIT_INSERT_EXPR <W_7, _2, 32 (32 bits)>;
  W_9 = BIT_INSERT_EXPR <W_8, _2, 0 (32 bits)>;
Into:
W_9 = {_2,_2,_2,_2};

This improvement deals with bitfields but vectors have a similar issue with
Bit_inserts so I deal with it there.