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[Bug target/50829] avx extra copy for _mm256_insertf128_pd
- From: "marc.glisse at normalesup dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Sat, 22 Oct 2011 17:01:51 +0000
- Subject: [Bug target/50829] avx extra copy for _mm256_insertf128_pd
- Auto-submitted: auto-generated
- References: <bug-50829-4@http.gcc.gnu.org/bugzilla/>
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.