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[Bug math/15936] Computing sin and cos is very slow when using AVX-powered processors
- From: "carlos at redhat dot com" <sourceware-bugzilla at sourceware dot org>
- To: glibc-bugs at sourceware dot org
- Date: Wed, 10 Feb 2016 14:26:38 +0000
- Subject: [Bug math/15936] Computing sin and cos is very slow when using AVX-powered processors
- Auto-submitted: auto-generated
- References: <bug-15936-131 at http dot sourceware dot org/bugzilla/>
https://sourceware.org/bugzilla/show_bug.cgi?id=15936
--- Comment #3 from Carlos O'Donell <carlos at redhat dot com> ---
(In reply to David Abdurachmanov from comment #2)
> Carlos,
> Do you recall which commit in glibc resolved the issue?
There are a whole series of commits for each relevant architecture which
requires eliding the save/restore of rounding modes around the relevant
functions that only operate correctly in round-to-nearest. So it isn't easy to
point out just one commit. It matters the architecture and other factors like
incremental improvements.
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