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| author | Brandt Bucher <brandtbucher@microsoft.com> | 2024-01-28 18:48:48 -0800 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2024-01-28 18:48:48 -0800 |
| commit | f6d9e5926b6138994eaa60d1c36462e36105733d (patch) | |
| tree | 53362fa9918ab65519ccf9a343cfcdfcfa9c4f6f /Python/pylifecycle.c | |
| parent | f7c05d7ad3075a1dbeed86b6b12903032e4afba6 (diff) | |
| download | cpython-f6d9e5926b6138994eaa60d1c36462e36105733d.tar.gz cpython-f6d9e5926b6138994eaa60d1c36462e36105733d.zip | |
GH-113464: Add a JIT backend for tier 2 (GH-113465)
Add an option (--enable-experimental-jit for configure-based builds
or --experimental-jit for PCbuild-based ones) to build an
*experimental* just-in-time compiler, based on copy-and-patch (https://fredrikbk.com/publications/copy-and-patch.pdf).
See Tools/jit/README.md for more information on how to install the required build-time tooling.
Diffstat (limited to 'Python/pylifecycle.c')
| -rw-r--r-- | Python/pylifecycle.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/Python/pylifecycle.c b/Python/pylifecycle.c index fff64dd63d6..372f6060237 100644 --- a/Python/pylifecycle.c +++ b/Python/pylifecycle.c @@ -1240,12 +1240,19 @@ init_interp_main(PyThreadState *tstate) // Turn on experimental tier 2 (uops-based) optimizer if (is_main_interp) { +#ifndef _Py_JIT + // No JIT, maybe use the tier two interpreter: char *envvar = Py_GETENV("PYTHON_UOPS"); int enabled = envvar != NULL && *envvar > '0'; if (_Py_get_xoption(&config->xoptions, L"uops") != NULL) { enabled = 1; } if (enabled) { +#else + // Always enable tier two for JIT builds (ignoring the environment + // variable and command-line option above): + if (true) { +#endif PyObject *opt = PyUnstable_Optimizer_NewUOpOptimizer(); if (opt == NULL) { return _PyStatus_ERR("can't initialize optimizer"); |