[Bug tree-optimization/93893] MIPS32r2: GCC is unable to figure out that it can use a single INS instruction instead of SLL+OR

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93893

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |ASSIGNED
   Last reconfirmed|                            |2020-02-23
          Component|middle-end                  |tree-optimization
           Assignee|unassigned at gcc dot gnu.org      |pinskia at gcc dot gnu.org
     Ever confirmed|0                           |1

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Mine for GCC 11.
I have a patch which fixes this but won't be included until GCC 11:
transpose_c:
        .frame  $sp,0,$31               # vars= 0, regs= 0/0, args= 0, gp= 0
        .mask   0x00000000,0
        .fmask  0x00000000,0
        .set    noreorder
        .set    nomacro
        lw      $2,0($4)
        lw      $3,0($5)
        ins     $3,$2,16,16
        jr      $31
        sw      $3,0($6)