[Bug target/111332] Using GCC7.3.0 and GCC10.3.0 to compile the same test case, assembler file instructions are different and performance fallback is obvious.

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111332

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
      Known to work|                            |6.4.0
      Known to fail|                            |7.3.0, 7.5.0, 8.5.0, 9.5.0

--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
GCC 11+ produces:
.L3:
        vmovdqu (%rsi), %ymm2
        vmovdqu 32(%rsi), %ymm1
        subq    $-128, %rdi
        subq    $-128, %rsi
        vmovdqu -64(%rsi), %ymm0
        vmovdqu -32(%rsi), %ymm3
        vmovdqu %ymm2, -128(%rdi)
        vmovdqu %ymm3, -32(%rdi)
        vmovdqu %ymm1, -96(%rdi)
        vmovdqu %ymm0, -64(%rdi)
        cmpq    %rax, %rdi
        jne     .L3

Which is the best code ...