https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80491
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |needs-bisection
--- Comment #26 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Andrew Pinski from comment #25)
> Hmm, I thought Jakub's recent work on PR 79173 would have fixed this but no
> it didn't.
But it does now, we get at -O2/-O3:
```
_Z3addR4pairS0_:
.LFB0:
.cfi_startproc
movq (%rsi), %rax
addq (%rdi), %rax
movq %rax, %rdx
movq 8(%rsi), %rax
adcq 8(%rdi), %rax
xchgq %rdx, %rax
ret
```
Which is definitely better.
