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[Bug math/14412] Removal of sysdeps/x86_64/fpu/s_sincos.S causes regressions
- From: "siddhesh at redhat dot com" <sourceware-bugzilla at sourceware dot org>
- To: glibc-bugs at sourceware dot org
- Date: Mon, 29 Apr 2013 13:44:08 +0000
- Subject: [Bug math/14412] Removal of sysdeps/x86_64/fpu/s_sincos.S causes regressions
- Auto-submitted: auto-generated
- References: <bug-14412-131 at http dot sourceware dot org/bugzilla/>
http://sourceware.org/bugzilla/show_bug.cgi?id=14412
--- Comment #36 from Siddhesh Poyarekar <siddhesh at redhat dot com> 2013-04-29 13:44:08 UTC ---
(In reply to comment #30)
> Your patch doesn't work for me. I've re-build glibc and then
> re-compiled poppler with "-ffinite-math-only". But I still
> only see calls to __sin and __cos with "perf top".
Looks like your code does not call sincos directly. sin and cos calls on the
same input seem to get optimized into sincos, so I'm not sure if
ffinite-math-only can detect that. Also, the patch also changes an installed
header, so you need to somehow include that during your compilation.
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