Re: [qemu-s390x] [Qemu-devel] [PATCH v1 1/5] s390x/tcg: Implement VECTOR FIND ANY ELEMENT EQUAL

[Richard Henderson]

On Wed, 22 May 2019 at 07:16, David Hildenbrand <address@hidden> wrote:
> > Also plausible.  I guess it would be good to know, anyway.
>
> I'll dump the parameters when booting Linux. My gut feeling is that the
> cc option is basically never used ...

It looks like our intuition is wrong about that.

address@hidden:~/glibc/src/sysdeps/s390$ grep -r vfaezbs * | wc -l
15

These set cc, use zs, and do not use rt.

address@hidden:~/glibc/src/sysdeps/s390$ grep -r 'vfaeb' * | wc -l
3

These do not set cc, do not use zs, and do use rt.

Those are the only two VFAE forms used by glibc (note that the same
variants as 'f' are used by the wide-character strings).


r~