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gh-106581: Project through calls (#108067)

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This finishes the work begun in gh-107760. When, while projecting a superblock, we encounter a call to a short, simple function, the superblock will now enter the function using `_PUSH_FRAME`, continue through it, and leave it using `_POP_FRAME`, and then continue through the original code. Multiple frame pushes and pops are even possible. It is also possible to stop appending to the superblock in the middle of a called function, when running out of space or encountering an unsupported bytecode.
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Guido van Rossum 2023-08-17 11:29:58 -07:00 • committed by GitHub
parent 292a22bdc2
commit 61c7249759
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16 changed files with 409 additions and 109 deletions
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9
Include/internal/pycore_function.h
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@ -16,13 +16,22 @@ extern PyObject* _PyFunction_Vectorcall(
#define FUNC_MAX_WATCHERS 8
#define FUNC_VERSION_CACHE_SIZE (1<<12) /* Must be a power of 2 */
struct _py_func_state {
uint32_t next_version;
// Borrowed references to function objects whose
// func_version % FUNC_VERSION_CACHE_SIZE
// once was equal to the index in the table.
// They are cleared when the function is deallocated.
PyFunctionObject *func_version_cache[FUNC_VERSION_CACHE_SIZE];
};
extern PyFunctionObject* _PyFunction_FromConstructor(PyFrameConstructor *constr);
extern uint32_t _PyFunction_GetVersionForCurrentState(PyFunctionObject *func);
extern void _PyFunction_SetVersion(PyFunctionObject *func, uint32_t version);
PyFunctionObject *_PyFunction_LookupByVersion(uint32_t version);
extern PyObject *_Py_set_function_type_params(
PyThreadState* unused, PyObject *func, PyObject *type_params);