[pypy-dev] how do you parse jit log containing binary dump ?

Shubha Ramani shubharamani at yahoo.com
Fri Dec 9 12:34:10 EST 2016


Armin you articulated exactly what I want. Please tell me the right place to look then ?

Shubha 

Sent from Shubha Ramani's iPhone 7

> On Dec 9, 2016, at 8:29 AM, Armin Rigo <armin.rigo at gmail.com> wrote:
> 
> Hi,
> 
> On 9 December 2016 at 15:55, Shubha Ramani via pypy-dev
> <pypy-dev at python.org> wrote:
>> I am no longer confused about that.
> 
> I think the rest of your mail shows there is still confusion.
> 
>> But so far, in order to be able to dump
>> jitcodes, I have to instrument python code with
>> "JitDriver", "merge_point", "meta_interp", etc...under the test directory -
> 
> Maybe you should start again by describing in detail what you want to
> do, from the start.
> 
> Let me take a wild guess, completely unrelated to the questions you're
> asking.  Maybe
> your goal is to run a "pypy" binary, which JITs some parts of the user
> Python code.
> What you want then is to map the raw machine code emitted in memory,
> back to Python-
> level information.  For example, from an IP, you want an answer like
> "this 'add' instruction
> comes from JIT-compiling through this Python function, precisely here
> [Python bytecode of a CALL], with the call inlined, and running this
> other Python
> function, precisely here [Python bytecode of a BINARY_ADD].
> 
> If that's anywhere close to what you're looking for, then you are
> looking at the wrong place.
> 
> 
> A bientôt,
> 
> Armin.



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