[Bug target/62166] Poor code generation (x86-64)

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62166

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Severity|normal                      |enhancement
     Ever confirmed|0                           |1
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2021-09-26

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
With -O2  -fschedule-insns in GCC 9+, I get decent code:

        movq    %rdx, %r8
        movzbl  %ch, %eax
        movsbq  %cl, %rdx
        shrq    $16, %rcx
        addq    %r8, %rdx
        jmp     *dispatch(,%rax,8)

Confirmed.