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Edit File : pycore_optimizer.h \| Size : 8.11 KB
#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 */ Back

Edit File : pycore_optimizer.h | Size : 8.11 KB

#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 */

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