[Bug tree-optimization/59650] Inefficient vector assignment code

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=59650

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |11.0
         Resolution|---                         |FIXED
             Status|UNCONFIRMED                 |RESOLVED

--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Fixed in GCC 11 with a few improvements.

-march=sandybridge

-O3:
        vmovupd (%rdi), %xmm1
        vinsertf128     $0x1, 16(%rdi), %ymm1, %ymm0

-O2:
        vmovupd 16(%rdi), %xmm1
        vmovupd (%rdi), %xmm0
        vinsertf128     $0x1, %xmm1, %ymm0, %ymm0

-mavx -O3:
        vmovupd (%rdi), %ymm0