[Bug target/93990] [x86] Silly code generation for _addcarry_u32/_addcarry_u64

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93990

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
This is already been fixed in GCC 10:
        addq    %rdx, %rdi
        movq    %rsi, %rax
        adcq    %rcx, %rax
        xorq    %rdi, %rax
        ret
        .ident  "GCC: (GNU) 10.0.1 20200121 (experimental) [master revision
e0a5b313c1a:f4dc220f630:b313d3c49c2387b5e212df22a5e6ecc0c4e95c0a]"