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Added a new, experimental, tracing optimizer and interpreter (a.k.a. "tier 2"). This currently pessimizes, so don't use yet -- this is infrastructure so we can experiment with optimizing passes. To enable it, pass ``-Xuops`` or set ``PYTHONUOPS=1``. To get debug output, set ``PYTHONUOPSDEBUG=N`` where ``N`` is a debug level (0-4, where 0 is no debug output and 4 is excessively verbose). All of this code is likely to change dramatically before the 3.13 feature freeze. But this is a first step.
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Original file line number | Diff line number | Diff line change |
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#ifndef Py_INTERNAL_UOPS_H | ||
#define Py_INTERNAL_UOPS_H | ||
#ifdef __cplusplus | ||
extern "C" { | ||
#endif | ||
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#ifndef Py_BUILD_CORE | ||
# error "this header requires Py_BUILD_CORE define" | ||
#endif | ||
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#define _Py_UOP_MAX_TRACE_LENGTH 16 | ||
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typedef struct { | ||
int opcode; | ||
uint64_t operand; // Sometimes oparg, sometimes a cache entry | ||
} _PyUOpInstruction; | ||
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typedef struct { | ||
_PyExecutorObject base; | ||
_PyUOpInstruction trace[_Py_UOP_MAX_TRACE_LENGTH]; // TODO: variable length | ||
} _PyUOpExecutorObject; | ||
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_PyInterpreterFrame *_PyUopExecute( | ||
_PyExecutorObject *executor, | ||
_PyInterpreterFrame *frame, | ||
PyObject **stack_pointer); | ||
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#ifdef __cplusplus | ||
} | ||
#endif | ||
#endif /* !Py_INTERNAL_UOPS_H */ |
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Misc/NEWS.d/next/Core and Builtins/2023-06-27-00-58-26.gh-issue-104584.Wu-uXy.rst
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Original file line number | Diff line number | Diff line change |
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Added a new, experimental, tracing optimizer and interpreter (a.k.a. "tier 2"). This currently pessimizes, so don't use yet -- this is infrastructure so we can experiment with optimizing passes. To enable it, pass ``-Xuops`` or set ``PYTHONUOPS=1``. To get debug output, set ``PYTHONUOPSDEBUG=N`` where ``N`` is a debug level (0-4, where 0 is no debug output and 4 is excessively verbose). |
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