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GH-113464: Add a JIT backend for tier 2 (GH-113465)

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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.
This commit is contained in:
Brandt Bucher 2024-01-28 18:48:48 -08:00 • committed by GitHub
parent f7c05d7ad3
commit f6d9e5926b
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29 changed files with 1738 additions and 5 deletions
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12
Python/optimizer.c
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@ -7,6 +7,7 @@
#include "pycore_optimizer.h" // _Py_uop_analyze_and_optimize()
#include "pycore_pystate.h" // _PyInterpreterState_GET()
#include "pycore_uop_ids.h"
#include "pycore_jit.h"
#include "cpython/optimizer.h"
#include <stdbool.h>
#include <stdint.h>
@ -227,6 +228,9 @@ static PyMethodDef executor_methods[] = {
static void
uop_dealloc(_PyExecutorObject *self) {
_Py_ExecutorClear(self);
#ifdef _Py_JIT
_PyJIT_Free(self);
#endif
PyObject_Free(self);
}
@ -789,6 +793,14 @@ make_executor_from_uops(_PyUOpInstruction *buffer, _PyBloomFilter *dependencies)
executor->trace[i].operand);
}
}
#endif
#ifdef _Py_JIT
executor->jit_code = NULL;
executor->jit_size = 0;
if (_PyJIT_Compile(executor, executor->trace, Py_SIZE(executor))) {
Py_DECREF(executor);
return NULL;
}
#endif
return executor;
}