[pypy-issue] [issue1002] Improve JIT documentation

Carl Friedrich Bolz tracker at bugs.pypy.org
Tue Jan 17 16:22:46 CET 2012


New submission from Carl Friedrich Bolz <cfbolz at gmx.de>:

Applying the JIT to an interpreter should have some better documentation. All
the information is basically there (in blog posts, papers, docstrings, tests
etc) but not really organized/approachable:

- which tools are there to inspect generated traces
- what are the basic hints that can be given via the jit driver?
- when is using unroll_safe a good idea?
- how to use virtualizables?
  - what are the exact restrictions on their use?
  - what to do when tracing stops most of the time due to a virtualizable escape
  - hint(self, access_directly=True, fresh_virtualizable=True)
  - how do virtualrefs work?

- what are quasi-immutable fields?

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messages: 3710
nosy: cfbolz, pypy-issue
priority: feature
status: unread
title: Improve JIT documentation

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PyPy bug tracker <tracker at bugs.pypy.org>
<https://bugs.pypy.org/issue1002>
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