Antoine Pitrou [EMAIL PROTECTED] writes:
Hi,
J. Sievers cadr4u at gmail.com writes:
A sequence of code such as LOAD_CONST LOAD_FAST BINARY_ADD will, in
CPython, push some constant onto the stack, push some local onto the
stack, then pop both off the stack, add them and push the result
M.-A. Lemburg [EMAIL PROTECTED] writes:
[snip]
BTW: I hope you did not use pybench to get profiles of the opcodes.
That would most certainly result in good results for pybench, but
less good ones for general applications such as Django or Zope/Plone.
Algorithm used for superinstruction
Daniel Stutzbach [EMAIL PROTECTED] writes:
[snip]
I searched around for information on how threaded code interacts with
branch prediction, and here's what I found. The short answer is that
threaded code significantly improves branch prediction.
See ``Optimizing indirect branch
Greg Ewing [EMAIL PROTECTED] writes:
Daniel Stutzbach wrote:
With threaded code, every handler ends with its own dispatcher, so
the processor can make fine-grained predictions.
I'm still wondering whether all this stuff makes a
noticeable difference in real-life Python code, which
spends
[EMAIL PROTECTED] writes:
On 23 Oct, 10:42 pm, [EMAIL PROTECTED] wrote:
Guido van Rossum wrote:
there already is something else called VPython
Perhaps it could be called Fython (Python with a Forth-like VM)
or Thython (threaded-code Python).
I feel like I've missed something important, but,
Hey,
I hope you don't mind my replying in digest form.
First off, I guess I should be a little clearer as to what VPthon is
and what it does.
VPython is essentially a set of patches for CPython (in touches only
three files, diff -b is about 800 lines IIRC plus the switch statement
in ceval.c's
Hi,
I implemented a variant of the CPython VM on top of Gforth's Vmgen; this made
it fairly straightforward to add direct threaded code and superinstructions for
the various permutations of LOAD_CONST, LOAD_FAST, and most of the two-argument
VM instructions.
Sources:
