https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119083
H.J. Lu <hjl.tools at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Ever confirmed|0 |1
Status|UNCONFIRMED |NEW
Last reconfirmed| |2025-03-03
--- Comment #4 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to Uroš Bizjak from comment #1)
> SSE_FIRST_REG is in ic86_class_likely_spilled_p because it is a
> single-member class. It is there because of SSE4 pcmpistrm patterns.
>
> %eax (and other single_class) registers are also listed in
> CLASS_LIKELY_SPILLED_P, they are also (very) commonly used, and there were
> no problems with that. So, why is %xmm0 different?
I will try removing AX, BX, CX and DX from ix86_class_likely_spilled_p. I will
keep
DI and SI since they are fixed in the string instructions.
