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Re: Failure to dlopen libgomp due to static TLS data


On Thu, Feb 12, 2015 at 06:55:30PM -0500, Rich Felker wrote:
> On Fri, Feb 13, 2015 at 10:12:11AM +1030, Alan Modra wrote:
> > I posted support for TLSDESC on powerpc back in 2009 (search for
> > powerpc _tls_get_addr call optimization).  The patch wasn't reviewed,
> > and I didn't push it because my benchmark tests didn't show a much of
> > a gain.  Quite possibly I wasn't using the right benchmark.
> 
> Were you measuring static-allocated TLSDESC vs non-TLSDESC GD model?
> That's the case where there should be a "big" difference, though I'm
> still somewhat skeptical of the benefits in real-world usage cases.

I can't remember, sorry, it was too long ago.

-- 
Alan Modra
Australia Development Lab, IBM


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