Re: Clang: now available from a SVN server near you!

[Pawel Worach <pawel_(_dot_)_worach_(_at_)_gmail_(_dot_)_com>]

On Mon, Jun 8, 2009 at 20:05, M. Warner Losh<imp_(_at_)_bsdimp_(_dot_)_com> wrote:
> In message: <20090604093831_(_dot_)_GE48776_(_at_)_hoeg_(_dot_)_nl>
>            Ed Schouten <ed_(_at_)_80386_(_dot_)_nl> writes:
> : Good news everyone!
> ...
> : So far we've only done testing on amd64 and i386. A lot of ports are
> : probably still broken. Caveat emptor. Beware of dog. Slippery when wet.
>
> "objects in mirror may be larger than they appear"
>
> Do you have size or run-time performance comparisons yet?
>

Here is a semi-recent build-time benchmark for a stipped down amd64 kernel
clang:
     182.04 real       166.68 user        13.29 sys

gcc:
     217.79 real       211.00 user        13.22 sys

libmicro runtime syscall benchmark results from April:
http://www.vlakno.cz/~pwo/lm/2009-04-11/lm.html

So runtime performance is on par with gcc, code size is a bit bigger
so there is still room for optimization in LLVM.

-- 
Pawel
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