[Bug target/50829] avx extra copy for _mm256_insertf128_pd

[marc.glisse at normalesup dot org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50829

--- Comment #2 from Marc Glisse <marc.glisse at normalesup dot org> 2011-10-22 17:01:51 UTC ---
(In reply to comment #1)
> This looks similar to PR 34283, a RA problem.

Ah, indeed. I also had a function that ended with:
    vmovapd    %xmm1, %xmm0
    vmaxpd    %xmm2, %xmm0, %xmm0
    vzeroupper
    ret

which looks related too. Thanks for the link.