https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91533
Uroš Bizjak <ubizjak at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2019-08-24
Assignee|unassigned at gcc dot gnu.org |ubizjak at gmail dot com
Target Milestone|--- |8.3
Ever confirmed|0 |1
--- Comment #1 from Uroš Bizjak <ubizjak at gmail dot com> ---
(In reply to Matthias Kretz from comment #0)
> Test case (cf. https://godbolt.org/z/IfL1mF):
>
> using V [[gnu::vector_size(8)]] = int;
>
> V f(V a, long double& x) {
> a = a < 0 ? -a : a;
> x += 1;
> return a;
> }
>
> Compile with e.g. `-O2 -march=skylake`. This generates a call to `PABSD mm1,
> mm2/m64` but fails to call `EMMS`. It even interleaves the FPU instructions
> with the MMX instructions. GCC 10 has a fix, it simply calls `PABSD xmm1,
> xmm2/m128`.
Yes, I have to backport the fix. MMX patterns should not be named.
