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[Bug target/44551] [missed optimization] AVX vextractf128 after vinsertf128
- From: "glisse at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Mon, 19 Nov 2018 15:12:02 +0000
- Subject: [Bug target/44551] [missed optimization] AVX vextractf128 after vinsertf128
- Auto-submitted: auto-generated
- References: <bug-44551-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=44551
--- Comment #19 from Marc Glisse <glisse at gcc dot gnu.org> ---
(In reply to Matthias Kretz from comment #18)
> FWIW, the issue is resolved on trunk. GCC8.2 still has the missed
> optimization: https://godbolt.org/z/hbgIIi
If I use exactly the testcase from the original description, the results don't
look as nice. Is that not an issue?