On 03/07/10 19:22, Paolo Giarrusso wrote:
> I had 3 colleague students who implemented, for instance, a
> Python-to-JVM bytecode compiler which was way faster than Jython.
> Which was the trick?
[cut]
I'm ready to bet that they did not implement a Python compiler, but a
simil-Python language that
On Sat, Jul 3, 2010 at 16:20, William Leslie
wrote:
> On 3 July 2010 08:56, Bengt Richter wrote:
>> On 07/02/2010 11:35 AM Carl Friedrich Bolz wrote:
> Paolo recently bemoaned the
> trend toward writing modules at interp level for speed* - I'm not
> really sure if it is a trend now or not - but
On Fri, Jul 2, 2010 at 23:16, Maciej Fijalkowski wrote:
> [snip]
>
>> the need for separate loads. In Python, instead, refcounting alone is
>> a very expensive operation.
>
>
> How does that apply to pypy?
I was talking about the original paper.
--
Paolo Giarrusso - Ph.D. Student
http://www.infor
On 3 July 2010 08:56, Bengt Richter wrote:
> On 07/02/2010 11:35 AM Carl Friedrich Bolz wrote:
> A thought/question:
>
> Could/does JIT make use of information in an assert statement? E.g., could we
> write
> assert set(type(x) for x in img) == set([float]) and len(img)==640*480
> in front of
On Sat, Jul 3, 2010 at 09:28, Armin Rigo wrote:
> Hi Paolo,
>
> On Sat, Jul 03, 2010 at 08:58:34AM +0200, Paolo Giarrusso wrote:
>> Isn't there some existing research about that in the 'tracing'
>> community? (...) Not sure
>> whether they do it also for Javascript, since there compilation time
On Jul 3, 2010, at 3:58 AM, Paolo Giarrusso wrote:
> Another issue: what is i4 for? It's not used at all in the loop, but
> it is reset to 27 at the end of it, each time. Doesn't such a var
> waste some (little) time?
This I found interesting. Do anyone know the answer?
--
Leonardo Santagada
sa
Hi Paolo,
2010/7/3 Paolo Giarrusso :
>> It requires thinking. It's harder to do because we don't know
>> statically upfront how many paths we'll compile to assembler, but I
>> can think about ways to mitigate that.
>
> Isn't there some existing research about that in the 'tracing'
> community? As
On 03/07/10 08:14, Hakan Ardo wrote:
> What is a bridge?
you might be interested to read the chapter of my PhD thesis which explains
exactly that, with diagrams:
http://codespeak.net/svn/user/antocuni/phd/thesis/thesis.pdf
In particular, section 6.4 explains the difference between loops, bridge
Hi Paolo,
On Sat, Jul 03, 2010 at 08:58:34AM +0200, Paolo Giarrusso wrote:
> Isn't there some existing research about that in the 'tracing'
> community? (...) Not sure
> whether they do it also for Javascript, since there compilation times
> have to be very fast, but I guess they did so in thei
Hi Alex,
On Fri, Jul 02, 2010 at 03:12:19PM -0500, Alex Gaynor wrote:
> In addition to the things you noted, I guess the int overflow check
> can be optimized out, since i+=1 can never cause it to overflow given
> that i is bounded at 640*480. I suppose in general that would require
> more datafl
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