Summarize #7602

[Carter Schonwald]

@Andrew, if you have GHC built with a real GCC, theres no perf issue.
(though if you built GHC with clang, thereis)

I've a bindist thats from the 7.8 branch from 5 days ago that I built wiht
GCC-4.8 here
https://github.com/cartazio/ghc/releases/tag/carters-build-7.8-preRC1
you may need to patch the settings file to point to your own GCC version

point being, no issue if you built with GCC. :)


On Tue, Feb 4, 2014 at 4:31 PM, Austin Seipp <austin at well-typed.com> wrote:

> TL;DR OS X suffers a performance hit when build with llvm-gcc/clang.
> The binary builds are built this way. The fix I outlined in the ticket
> (a fast `pthread_getspecific`/`pthread_setspecific`) could still work
> to recover most of the performance, but Apple accidentally messed up
> the Mavericks source code release, so I'm not sure if anything
> regarding the pthread implementation has changed. If it hasn't, then I
> think it should be reasonably easy to fix with some testing.
>
> (The ticket is a bit of a long and dry read I'm afraid.)
>
> On Tue, Feb 4, 2014 at 3:22 PM, Andrew Farmer <afarmer at ittc.ku.edu> wrote:
> > I know that #7602 has been mentioned as a final loose end in the RC. I
> was
> > wondering if someone in the know could summarize its status in regards to
> > how it effects GHC users.
> >
> > Feel free to be blisteringly brief... ;-) I'm just looking for things
> like:
> > "this is a non-issue on modern OS X/Clang" or "it'll be fixed soon just
> be
> > patient" or "we've done our part, this is Apple's problem now".
> >
> > I gave the trac thread a read-through, but there seems to be several
> degrees
> > of flexibility/workarounds, so I'm still not sure if this is something I
> > should worry about on my OS X machine.
> >
> > Thanks for your cycles!
> > Andrew
> >
> > _______________________________________________
> > ghc-devs mailing list
> > ghc-devs at haskell.org
> > http://www.haskell.org/mailman/listinfo/ghc-devs
> >
>
>
>
> --
> Regards,
>
> Austin Seipp, Haskell Consultant
> Well-Typed LLP, http://www.well-typed.com/
> _______________________________________________
> ghc-devs mailing list
> ghc-devs at haskell.org
> http://www.haskell.org/mailman/listinfo/ghc-devs
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.haskell.org/pipermail/ghc-devs/attachments/20140204/24b43bef/attachment.html>