[LLVMdev] Help adding the Bullet physics sdk benchmark to the LLVM test suite?

[David Greene]

On Tuesday 05 January 2010 16:13, Anton Korobeynikov wrote:
> Hello, Erwin
>
> > I suggest working on a better benchmark that tests independent parts of
> > the pipeline,
> > so we don't accumulate results (several frames) but we test a single
> > algorithm at a time,
> > with known input and expected output. This avoid unstability and we can
> > measure the error of the output.
> > Anton, are you interested in working together on such improved benchmark?
>
> This is pretty interesting approach. However, for now I'm more
> concerned about code speed, I'm seeing that llvm-generated code is
> slower that gcc-generated one on at least two platforms (20% on x86-64
> & even more on arm), so, I suspect an optimization deficiency is
> somewhere...

But keep in mind that fast+incorrect is no good.  Are we sure the gcc code is
correct?

                                 -Dave