Ken Jin

Generic strings/regex patterns in strings

8

Currently, we have `str` and `LiteralStr`. These don't do a good job expressing the range of values a string may have. Let's say we have the following function: ```python Email:...

testProtocol failures on 3.11 build

5

The following code: ```python # rep.py from typing import Protocol class Proto(Protocol): pass class A: pass class B(A, Proto): pass ``` ``` import rep ``` Fails on a 3.11 debug...

gh-93911: Specialize `LOAD_ATTR` for custom `__getattr__` and `__getattribute__`

15

Linked to #93911. For `__getattr__`, we specialize as per normal as long as the specialized bytecode can succeed without raising `AttributeError`. For `__getattribute__`, a specialized instruction is created to inline...

Improving representative benchmarks for typing ecosystem

4

Due to a current lack of representative macrobenchmarks, it is very difficult to decide on whether complex accelerators for some parts of typing are worth implementing in the future. Hence,...

Specialize calls for Python classes

1

BPO | [46939](https://bugs.python.org/issue46939) --- | :--- Nosy | @markshannon, @brandtbucher, @Fidget-Spinner PRs | python/cpython#31707python/cpython#31936 *Note: these values reflect the state of the issue at the time it was migrated and...

Set up tagged pointers in the evaluation stack

3

# Feature or enhancement ### Proposal: This issue mostly mirrors Mark's original one at https://github.com/faster-cpython/ideas/issues/632. As part of PEP 703, tagged pointers will help achieve deferred reference counting. Tagged pointers...

Document how to add a bytecode specialization

4

How to add a new bytecode specialization is knowledge only a few of us remember right now. We should document this somewhere (devguide or CPython, I don't mind). Hopefully a...

[dynamo] Automatically convert loop bodies to function calls

45

Related to https://github.com/pytorch/pytorch/issues/111441, but will not fix it until we implement function caching/higher order operators for for loops. **See below for results, roughly 10% compilation speedup for medium loops, 20%...

gh-117139: Convert the evaluation stack to stack refs

12

Only tags all pointers 0b11 and NULL and immortal stuff as deferred for now. * Issue: gh-117139

`DECREF_INPUTS_AND_REUSE_FLOAT` and `_Py_DECREF_SPECIALIZED` are problematic in that they don't follow standard CPython reference semantics that we plan for the deferred refcounting. The easiest solution would be to get rid of...