mirrors/cpython
1
0
Fork 0
mirror of https://github.com/python/cpython.git synced 2025-11-02 11:08:57 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 15

gh-118335: Configure Tier 2 interpreter at build time (#118339)

Browse source 
The code for Tier 2 is now only compiled when configured
with `--enable-experimental-jit[=yes|interpreter]`.

We drop support for `PYTHON_UOPS` and -`Xuops`,
but you can disable the interpreter or JIT
at runtime by setting `PYTHON_JIT=0`.
You can also build it without enabling it by default
using `--enable-experimental-jit=yes-off`;
enable with `PYTHON_JIT=1`.

On Windows, the `build.bat` script supports
`--experimental-jit`, `--experimental-jit-off`,
`--experimental-interpreter`.

In the C code, `_Py_JIT` is defined as before
when the JIT is enabled; the new variable
`_Py_TIER2` is defined when the JIT *or* the
interpreter is enabled. It is actually a bitmask:
1: JIT; 2: default-off; 4: interpreter.
This commit is contained in:
Guido van Rossum 2024-04-30 18:26:34 -07:00 • committed by GitHub
parent 9c468e2c5d
commit 7d83f7bcc4
No known key found for this signature in database
GPG key ID: B5690EEEBB952194
32 changed files with 181 additions and 42 deletions
Download patch file Download diff file Expand all files Collapse all files

4
Misc/NEWS.d/next/Core and Builtins/2024-04-26-14-06-18.gh-issue-118335.SRFsxO.rst Normal file
View file

@ -0,0 +1,4 @@
Change how to use the tier 2 interpreter. Instead of running Python with
``-X uops`` or setting the environment variable ``PYTHON_UOPS=1``, this
choice is now made at build time by configuring with
``--enable-experimental-jit=interpreter``.