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#ifndef Py_INTERNAL_OPTIMIZER_H
#define Py_INTERNAL_OPTIMIZER_H
#ifdef __cplusplus
extern "C" {
#endif
#ifndef Py_BUILD_CORE
# error "this header requires Py_BUILD_CORE define"
#endif
#include "pycore_uop_ids.h"
#include <stdbool.h>
typedef struct _PyExecutorLinkListNode {
struct _PyExecutorObject *next;
struct _PyExecutorObject *previous;
} _PyExecutorLinkListNode;
/* Bloom filter with m = 256
* https://en.wikipedia.org/wiki/Bloom_filter */
#define BLOOM_FILTER_WORDS 8
typedef struct _bloom_filter {
uint32_t bits[BLOOM_FILTER_WORDS];
} _PyBloomFilter;
typedef struct {
uint8_t opcode;
uint8_t oparg;
uint8_t valid;
uint8_t linked;
int index; // Index of ENTER_EXECUTOR (if code isn't NULL, below).
_PyBloomFilter bloom;
_PyExecutorLinkListNode links;
PyCodeObject *code; // Weak (NULL if no corresponding ENTER_EXECUTOR).
} _PyVMData;
#define UOP_FORMAT_TARGET 0
#define UOP_FORMAT_EXIT 1
#define UOP_FORMAT_JUMP 2
#define UOP_FORMAT_UNUSED 3
/* Depending on the format,
* the 32 bits between the oparg and operand are:
* UOP_FORMAT_TARGET:
* uint32_t target;
* UOP_FORMAT_EXIT
* uint16_t exit_index;
* uint16_t error_target;
* UOP_FORMAT_JUMP
* uint16_t jump_target;
* uint16_t error_target;
*/
typedef struct {
uint16_t opcode:14;
uint16_t format:2;
uint16_t oparg;
union {
uint32_t target;
struct {
union {
uint16_t exit_index;
uint16_t jump_target;
};
uint16_t error_target;
};
};
uint64_t operand; // A cache entry
} _PyUOpInstruction;
static inline uint32_t uop_get_target(const _PyUOpInstruction *inst)
{
assert(inst->format == UOP_FORMAT_TARGET);
return inst->target;
}
static inline uint16_t uop_get_exit_index(const _PyUOpInstruction *inst)
{
assert(inst->format == UOP_FORMAT_EXIT);
return inst->exit_index;
}
static inline uint16_t uop_get_jump_target(const _PyUOpInstruction *inst)
{
assert(inst->format == UOP_FORMAT_JUMP);
return inst->jump_target;
}
static inline uint16_t uop_get_error_target(const _PyUOpInstruction *inst)
{
assert(inst->format != UOP_FORMAT_TARGET);
return inst->error_target;
}
typedef struct _exit_data {
uint32_t target;
_Py_BackoffCounter temperature;
const struct _PyExecutorObject *executor;
} _PyExitData;
typedef struct _PyExecutorObject {
PyObject_VAR_HEAD
const _PyUOpInstruction *trace;
_PyVMData vm_data; /* Used by the VM, but opaque to the optimizer */
uint32_t exit_count;
uint32_t code_size;
size_t jit_size;
void *jit_code;
void *jit_side_entry;
_PyExitData exits[1];
} _PyExecutorObject;
typedef struct _PyOptimizerObject _PyOptimizerObject;
/* Should return > 0 if a new executor is created. O if no executor is produced and < 0 if an error occurred. */
typedef int (*optimize_func)(
_PyOptimizerObject* self, struct _PyInterpreterFrame *frame,
_Py_CODEUNIT *instr, _PyExecutorObject **exec_ptr,
int curr_stackentries);
struct _PyOptimizerObject {
PyObject_HEAD
optimize_func optimize;
/* Data needed by the optimizer goes here, but is opaque to the VM */
};
/** Test support **/
typedef struct {
_PyOptimizerObject base;
int64_t count;
} _PyCounterOptimizerObject;
_PyOptimizerObject *_Py_SetOptimizer(PyInterpreterState *interp, _PyOptimizerObject* optimizer);
PyAPI_FUNC(int) _Py_SetTier2Optimizer(_PyOptimizerObject* optimizer);
PyAPI_FUNC(_PyOptimizerObject *) _Py_GetOptimizer(void);
PyAPI_FUNC(_PyExecutorObject *) _Py_GetExecutor(PyCodeObject *code, int offset);
void _Py_ExecutorInit(_PyExecutorObject *, const _PyBloomFilter *);
void _Py_ExecutorDetach(_PyExecutorObject *);
void _Py_BloomFilter_Init(_PyBloomFilter *);
void _Py_BloomFilter_Add(_PyBloomFilter *bloom, void *obj);
PyAPI_FUNC(void) _Py_Executor_DependsOn(_PyExecutorObject *executor, void *obj);
/* For testing */
PyAPI_FUNC(PyObject *) _PyOptimizer_NewCounter(void);
PyAPI_FUNC(PyObject *) _PyOptimizer_NewUOpOptimizer(void);
#define _Py_MAX_ALLOWED_BUILTINS_MODIFICATIONS 3
#define _Py_MAX_ALLOWED_GLOBALS_MODIFICATIONS 6
#ifdef _Py_TIER2
PyAPI_FUNC(void) _Py_Executors_InvalidateDependency(PyInterpreterState *interp, void *obj, int is_invalidation);
PyAPI_FUNC(void) _Py_Executors_InvalidateAll(PyInterpreterState *interp, int is_invalidation);
#else
# define _Py_Executors_InvalidateDependency(A, B, C) ((void)0)
# define _Py_Executors_InvalidateAll(A, B) ((void)0)
#endif
// This is the length of the trace we project initially.
#define UOP_MAX_TRACE_LENGTH 800
#define TRACE_STACK_SIZE 5
int _Py_uop_analyze_and_optimize(struct _PyInterpreterFrame *frame,
_PyUOpInstruction *trace, int trace_len, int curr_stackentries,
_PyBloomFilter *dependencies);
extern PyTypeObject _PyCounterExecutor_Type;
extern PyTypeObject _PyCounterOptimizer_Type;
extern PyTypeObject _PyDefaultOptimizer_Type;
extern PyTypeObject _PyUOpExecutor_Type;
extern PyTypeObject _PyUOpOptimizer_Type;
/* Symbols */
/* See explanation in optimizer_symbols.c */
struct _Py_UopsSymbol {
int flags; // 0 bits: Top; 2 or more bits: Bottom
PyTypeObject *typ; // Borrowed reference
PyObject *const_val; // Owned reference (!)
};
// Holds locals, stack, locals, stack ... co_consts (in that order)
#define MAX_ABSTRACT_INTERP_SIZE 4096
#define TY_ARENA_SIZE (UOP_MAX_TRACE_LENGTH * 5)
// Need extras for root frame and for overflow frame (see TRACE_STACK_PUSH())
#define MAX_ABSTRACT_FRAME_DEPTH (TRACE_STACK_SIZE + 2)
typedef struct _Py_UopsSymbol _Py_UopsSymbol;
struct _Py_UOpsAbstractFrame {
// Max stacklen
int stack_len;
int locals_len;
_Py_UopsSymbol **stack_pointer;
_Py_UopsSymbol **stack;
_Py_UopsSymbol **locals;
};
typedef struct _Py_UOpsAbstractFrame _Py_UOpsAbstractFrame;
typedef struct ty_arena {
int ty_curr_number;
int ty_max_number;
_Py_UopsSymbol arena[TY_ARENA_SIZE];
} ty_arena;
struct _Py_UOpsContext {
PyObject_HEAD
// The current "executing" frame.
_Py_UOpsAbstractFrame *frame;
_Py_UOpsAbstractFrame frames[MAX_ABSTRACT_FRAME_DEPTH];
int curr_frame_depth;
// Arena for the symbolic types.
ty_arena t_arena;
_Py_UopsSymbol **n_consumed;
_Py_UopsSymbol **limit;
_Py_UopsSymbol *locals_and_stack[MAX_ABSTRACT_INTERP_SIZE];
};
typedef struct _Py_UOpsContext _Py_UOpsContext;
extern bool _Py_uop_sym_is_null(_Py_UopsSymbol *sym);
extern bool _Py_uop_sym_is_not_null(_Py_UopsSymbol *sym);
extern bool _Py_uop_sym_is_const(_Py_UopsSymbol *sym);
extern PyObject *_Py_uop_sym_get_const(_Py_UopsSymbol *sym);
extern _Py_UopsSymbol *_Py_uop_sym_new_unknown(_Py_UOpsContext *ctx);
extern _Py_UopsSymbol *_Py_uop_sym_new_not_null(_Py_UOpsContext *ctx);
extern _Py_UopsSymbol *_Py_uop_sym_new_type(
_Py_UOpsContext *ctx, PyTypeObject *typ);
extern _Py_UopsSymbol *_Py_uop_sym_new_const(_Py_UOpsContext *ctx, PyObject *const_val);
extern _Py_UopsSymbol *_Py_uop_sym_new_null(_Py_UOpsContext *ctx);
extern bool _Py_uop_sym_has_type(_Py_UopsSymbol *sym);
extern bool _Py_uop_sym_matches_type(_Py_UopsSymbol *sym, PyTypeObject *typ);
extern bool _Py_uop_sym_set_null(_Py_UopsSymbol *sym);
extern bool _Py_uop_sym_set_non_null(_Py_UopsSymbol *sym);
extern bool _Py_uop_sym_set_type(_Py_UopsSymbol *sym, PyTypeObject *typ);
extern bool _Py_uop_sym_set_const(_Py_UopsSymbol *sym, PyObject *const_val);
extern bool _Py_uop_sym_is_bottom(_Py_UopsSymbol *sym);
extern int _Py_uop_sym_truthiness(_Py_UopsSymbol *sym);
extern PyTypeObject *_Py_uop_sym_get_type(_Py_UopsSymbol *sym);
extern int _Py_uop_abstractcontext_init(_Py_UOpsContext *ctx);
extern void _Py_uop_abstractcontext_fini(_Py_UOpsContext *ctx);
extern _Py_UOpsAbstractFrame *_Py_uop_frame_new(
_Py_UOpsContext *ctx,
PyCodeObject *co,
int curr_stackentries,
_Py_UopsSymbol **args,
int arg_len);
extern int _Py_uop_frame_pop(_Py_UOpsContext *ctx);
PyAPI_FUNC(PyObject *) _Py_uop_symbols_test(PyObject *self, PyObject *ignored);
PyAPI_FUNC(int) _PyOptimizer_Optimize(struct _PyInterpreterFrame *frame, _Py_CODEUNIT *start, PyObject **stack_pointer, _PyExecutorObject **exec_ptr);
#ifdef __cplusplus
}
#endif
#endif /* !Py_INTERNAL_OPTIMIZER_H */