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GH-113710: Backedge counter improvements. (GH-115166)

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Mark Shannon 2024-02-13 14:16:37 +00:00 • committed by GitHub
parent 7cce857622
commit f9f6156c5a
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7 changed files with 81 additions and 55 deletions
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10
Include/cpython/optimizer.h
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@ -71,6 +71,8 @@ typedef struct {
PyAPI_FUNC(int) PyUnstable_Replace_Executor(PyCodeObject *code, _Py_CODEUNIT *instr, _PyExecutorObject *executor);
_PyOptimizerObject *_Py_SetOptimizer(PyInterpreterState *interp, _PyOptimizerObject* optimizer);
PyAPI_FUNC(void) PyUnstable_SetOptimizer(_PyOptimizerObject* optimizer);
PyAPI_FUNC(_PyOptimizerObject *) PyUnstable_GetOptimizer(void);
@ -80,8 +82,6 @@ PyAPI_FUNC(_PyExecutorObject *) PyUnstable_GetExecutor(PyCodeObject *code, int o
int
_PyOptimizer_Optimize(struct _PyInterpreterFrame *frame, _Py_CODEUNIT *start, PyObject **stack_pointer);
extern _PyOptimizerObject _PyOptimizer_Default;
void _Py_ExecutorInit(_PyExecutorObject *, _PyBloomFilter *);
void _Py_ExecutorClear(_PyExecutorObject *);
void _Py_BloomFilter_Init(_PyBloomFilter *);
@ -96,7 +96,11 @@ PyAPI_FUNC(PyObject *)PyUnstable_Optimizer_NewUOpOptimizer(void);
#define OPTIMIZER_BITS_IN_COUNTER 4
/* Minimum of 16 additional executions before retry */
#define MINIMUM_TIER2_BACKOFF 4
#define MIN_TIER2_BACKOFF 4
#define MAX_TIER2_BACKOFF (15 - OPTIMIZER_BITS_IN_COUNTER)
#define OPTIMIZER_BITS_MASK ((1 << OPTIMIZER_BITS_IN_COUNTER) - 1)
/* A value <= UINT16_MAX but large enough that when shifted is > UINT16_MAX */
#define OPTIMIZER_UNREACHABLE_THRESHOLD UINT16_MAX
#define _Py_MAX_ALLOWED_BUILTINS_MODIFICATIONS 3
#define _Py_MAX_ALLOWED_GLOBALS_MODIFICATIONS 6

6
Include/internal/pycore_interp.h
View file

@ -239,8 +239,10 @@ struct _is {
struct callable_cache callable_cache;
_PyOptimizerObject *optimizer;
_PyExecutorObject *executor_list_head;
uint16_t optimizer_resume_threshold;
uint16_t optimizer_backedge_threshold;
/* These values are shifted and offset to speed up check in JUMP_BACKWARD */
uint32_t optimizer_resume_threshold;
uint32_t optimizer_backedge_threshold;
uint32_t next_func_version;
_rare_events rare_events;
PyDict_WatchCallback builtins_dict_watcher;