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gh-104584: Baby steps towards generating and executing traces (#105924)

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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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Guido van Rossum 2023-06-26 19:02:57 -07:00 • committed by GitHub
parent d3af83b934
commit 51fc725117
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21 changed files with 2559 additions and 305 deletions
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10
Python/ceval_macros.h
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@ -1,4 +1,4 @@
// Macros needed by ceval.c and bytecodes.c
// Macros and other things needed by ceval.c and bytecodes.c
/* Computed GOTOs, or
the-optimization-commonly-but-improperly-known-as-"threaded code"
@ -339,3 +339,11 @@ do { \
goto error; \
} \
} while (0);
typedef PyObject *(*convertion_func_ptr)(PyObject *);
static const convertion_func_ptr CONVERSION_FUNCTIONS[4] = {
[FVC_STR] = PyObject_Str,
[FVC_REPR] = PyObject_Repr,
[FVC_ASCII] = PyObject_ASCII
};