Hi Saam.
Em seg, 8 de out de 2018 às 02:41, Saam Barati escreveu:
>
> Hi Caio,
>
> > On Oct 6, 2018, at 7:30 AM, Caio Lima wrote:
> >
> > Hi all.
> >
> > I'm starting working to fix JIT support of BigInt in some operations
> > we already have upstream. In such case, I'm sending
> > (https://bugs.webkit.org/show_bug.cgi?id=186177) to support BigInt
> > speculation into ValueAdd node. As I want to know if BigInt
> > speculation represents some performance improvement, I'm also
> > proposing a new benchmark suite called BigIntBench. The idea right now
> > is to enable us to write microbenchmarks while working into JIT fixes.
> > The main reason behind that is due the practicality of enabling
> > "--useBigInt=true" flags for tests in this suite. The big plan is to
> > move all microbenchmarks to "JSTests/microbenchmarks" and then add
> > relevant tests to evaluate how fast JSC can manipulate BigInts. IIRC,
> > Robin Morisset mentioned about introducing some benchmarks to evaluate
> > BigInt implementation sometime ago.
> >
> > What do you think about that? Does it make sense?
> I think it makes a lot of sense to start using benchmarks to drive
> performance improvements in our BigInt implementation.
>
> It's probably good to use both microbenchmarks and macro benchmarks to do
> this. I definitely agree it's worth writing microbenchmarks to show that
> changes are good for perf. But it's probably worth converting some
> preexisting benchmarks to use BigInts and measure performance on that as
> well. Some ideas could be taking some of the math-heavy benchmarks from
> JetStream/Kraken as a starting point.
This sounds a good idea. I'll also do that as soon as we have support
to all operations.
> - Saam
>
> >
> > Regards,
> > Caio.
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