#include "Python.h"

#include "pycore_optimizer.h"

#include "pycore_uops.h"

#include "pycore_uop_ids.h"

#include "internal/pycore_moduleobject.h"

#define op(name, ...) /* NAME is ignored */

typedef struct _Py_UopsSymbol _Py_UopsSymbol;

typedef struct _Py_UOpsContext _Py_UOpsContext;

typedef struct _Py_UOpsAbstractFrame _Py_UOpsAbstractFrame;

#define sym_is_not_null _Py_uop_sym_is_not_null

#define sym_is_const _Py_uop_sym_is_const

#define sym_get_const _Py_uop_sym_get_const

#define sym_new_unknown _Py_uop_sym_new_unknown

#define sym_new_not_null _Py_uop_sym_new_not_null

#define sym_new_type _Py_uop_sym_new_type

#define sym_is_null _Py_uop_sym_is_null

#define sym_new_const _Py_uop_sym_new_const

#define sym_new_null _Py_uop_sym_new_null

#define sym_matches_type _Py_uop_sym_matches_type

#define sym_matches_type_version _Py_uop_sym_matches_type_version

#define sym_get_type _Py_uop_sym_get_type

#define sym_has_type _Py_uop_sym_has_type

#define sym_set_null(SYM) _Py_uop_sym_set_null(ctx, SYM)

#define sym_set_non_null(SYM) _Py_uop_sym_set_non_null(ctx, SYM)

#define sym_set_type(SYM, TYPE) _Py_uop_sym_set_type(ctx, SYM, TYPE)

#define sym_set_type_version(SYM, VERSION) _Py_uop_sym_set_type_version(ctx, SYM, VERSION)

#define sym_set_const(SYM, CNST) _Py_uop_sym_set_const(ctx, SYM, CNST)

#define sym_is_bottom _Py_uop_sym_is_bottom

#define frame_new _Py_uop_frame_new

#define frame_pop _Py_uop_frame_pop

extern int

optimize_to_bool(

_Py_UopsSymbol **result_ptr);

extern void

eliminate_pop_guard(_PyUOpInstruction *this_instr, bool exit);

extern PyCodeObject *get_code(_PyUOpInstruction *op);

static int

dummy_func(void) {

PyCodeObject *co;

int oparg;

_Py_UopsSymbol *flag;

_Py_UopsSymbol *left;

_Py_UopsSymbol *right;

_Py_UopsSymbol *value;

_Py_UopsSymbol *res;

_Py_UopsSymbol *iter;

_Py_UopsSymbol *top;

_Py_UopsSymbol *bottom;

_Py_UOpsAbstractFrame *frame;

_Py_UOpsAbstractFrame *new_frame;

_Py_UOpsContext *ctx;

_PyUOpInstruction *this_instr;

_PyBloomFilter *dependencies;

int modified;

int curr_space;

int max_space;

_PyUOpInstruction *first_valid_check_stack;

_PyUOpInstruction *corresponding_check_stack;

op(_LOAD_FAST_CHECK, (-- value)) {

value = GETLOCAL(oparg);

// We guarantee this will error - just bail and don't optimize it.

if (sym_is_null(value)) {

ctx->done = true;

}

}

op(_LOAD_FAST, (-- value)) {

value = GETLOCAL(oparg);

}

op(_LOAD_FAST_AND_CLEAR, (-- value)) {

value = GETLOCAL(oparg);

_Py_UopsSymbol *temp = sym_new_null(ctx);

GETLOCAL(oparg) = temp;

}

op(_STORE_FAST, (value --)) {

GETLOCAL(oparg) = value;

}

op(_PUSH_NULL, (-- res)) {

res = sym_new_null(ctx);

}

op(_GUARD_BOTH_INT, (left, right -- left, right)) {

if (sym_matches_type(left, &PyLong_Type)) {

if (sym_matches_type(right, &PyLong_Type)) {

REPLACE_OP(this_instr, _NOP, 0, 0);

}

else {

REPLACE_OP(this_instr, _GUARD_TOS_INT, 0, 0);

}

}

else {

if (sym_matches_type(right, &PyLong_Type)) {

REPLACE_OP(this_instr, _GUARD_NOS_INT, 0, 0);

}

}

sym_set_type(left, &PyLong_Type);

sym_set_type(right, &PyLong_Type);

}

op(_GUARD_TYPE_VERSION, (type_version/2, owner -- owner)) {

assert(type_version);

if (sym_matches_type_version(owner, type_version)) {

REPLACE_OP(this_instr, _NOP, 0, 0);

} else {

// add watcher so that whenever the type changes we invalidate this

PyTypeObject *type = _PyType_LookupByVersion(type_version);

// if the type is null, it was not found in the cache (there was a conflict)

// with the key, in which case we can't trust the version

if (type) {

// if the type version was set properly, then add a watcher

// if it wasn't this means that the type version was previously set to something else

// and we set the owner to bottom, so we don't need to add a watcher because we must have

// already added one earlier.

if (sym_set_type_version(owner, type_version)) {

PyType_Watch(TYPE_WATCHER_ID, (PyObject *)type);

_Py_BloomFilter_Add(dependencies, type);

}

}

}

}

op(_GUARD_BOTH_FLOAT, (left, right -- left, right)) {

if (sym_matches_type(left, &PyFloat_Type)) {

if (sym_matches_type(right, &PyFloat_Type)) {

REPLACE_OP(this_instr, _NOP, 0, 0);

}

else {

REPLACE_OP(this_instr, _GUARD_TOS_FLOAT, 0, 0);

}

}

else {

if (sym_matches_type(right, &PyFloat_Type)) {

REPLACE_OP(this_instr, _GUARD_NOS_FLOAT, 0, 0);

}

}

sym_set_type(left, &PyFloat_Type);

sym_set_type(right, &PyFloat_Type);

}

op(_GUARD_BOTH_UNICODE, (left, right -- left, right)) {

if (sym_matches_type(left, &PyUnicode_Type) &&

sym_matches_type(right, &PyUnicode_Type)) {

REPLACE_OP(this_instr, _NOP, 0 ,0);

}

sym_set_type(left, &PyUnicode_Type);

sym_set_type(left, &PyUnicode_Type);

}

op(_BINARY_OP, (left, right -- res)) {

PyTypeObject *ltype = sym_get_type(left);

PyTypeObject *rtype = sym_get_type(right);

if (ltype != NULL && (ltype == &PyLong_Type || ltype == &PyFloat_Type) &&

rtype != NULL && (rtype == &PyLong_Type || rtype == &PyFloat_Type))

{

if (oparg != NB_TRUE_DIVIDE && oparg != NB_INPLACE_TRUE_DIVIDE &&

ltype == &PyLong_Type && rtype == &PyLong_Type) {

/* If both inputs are ints and the op is not division the result is an int */

res = sym_new_type(ctx, &PyLong_Type);

}

else {

/* For any other op combining ints/floats the result is a float */

res = sym_new_type(ctx, &PyFloat_Type);

}

}

else {

res = sym_new_unknown(ctx);

}

}

op(_BINARY_OP_ADD_INT, (left, right -- res)) {

if (sym_is_const(left) && sym_is_const(right) &&

sym_matches_type(left, &PyLong_Type) && sym_matches_type(right, &PyLong_Type))

{

assert(PyLong_CheckExact(sym_get_const(left)));

assert(PyLong_CheckExact(sym_get_const(right)));

PyObject *temp = _PyLong_Add((PyLongObject *)sym_get_const(left),

(PyLongObject *)sym_get_const(right));

if (temp == NULL) {

goto error;

}

res = sym_new_const(ctx, temp);

Py_DECREF(temp);

// TODO gh-115506:

// replace opcode with constant propagated one and add tests!

}

else {

res = sym_new_type(ctx, &PyLong_Type);

}

}

op(_BINARY_OP_SUBTRACT_INT, (left, right -- res)) {

if (sym_is_const(left) && sym_is_const(right) &&

sym_matches_type(left, &PyLong_Type) && sym_matches_type(right, &PyLong_Type))

{

assert(PyLong_CheckExact(sym_get_const(left)));

assert(PyLong_CheckExact(sym_get_const(right)));

PyObject *temp = _PyLong_Subtract((PyLongObject *)sym_get_const(left),

(PyLongObject *)sym_get_const(right));

if (temp == NULL) {

goto error;

}

res = sym_new_const(ctx, temp);

Py_DECREF(temp);

// TODO gh-115506:

// replace opcode with constant propagated one and add tests!

}

else {

res = sym_new_type(ctx, &PyLong_Type);

}

}

op(_BINARY_OP_MULTIPLY_INT, (left, right -- res)) {

if (sym_is_const(left) && sym_is_const(right) &&

sym_matches_type(left, &PyLong_Type) && sym_matches_type(right, &PyLong_Type))

{

assert(PyLong_CheckExact(sym_get_const(left)));

assert(PyLong_CheckExact(sym_get_const(right)));

PyObject *temp = _PyLong_Multiply((PyLongObject *)sym_get_const(left),

(PyLongObject *)sym_get_const(right));

if (temp == NULL) {

goto error;

}

res = sym_new_const(ctx, temp);

Py_DECREF(temp);

// TODO gh-115506:

// replace opcode with constant propagated one and add tests!

}

else {

res = sym_new_type(ctx, &PyLong_Type);

}

}

op(_BINARY_OP_ADD_FLOAT, (left, right -- res)) {

if (sym_is_const(left) && sym_is_const(right) &&

sym_matches_type(left, &PyFloat_Type) && sym_matches_type(right, &PyFloat_Type))

{

assert(PyFloat_CheckExact(sym_get_const(left)));

assert(PyFloat_CheckExact(sym_get_const(right)));

PyObject *temp = PyFloat_FromDouble(

PyFloat_AS_DOUBLE(sym_get_const(left)) +

PyFloat_AS_DOUBLE(sym_get_const(right)));

if (temp == NULL) {

goto error;

}

res = sym_new_const(ctx, temp);

Py_DECREF(temp);

// TODO gh-115506:

// replace opcode with constant propagated one and update tests!

}

else {

res = sym_new_type(ctx, &PyFloat_Type);

}

}

op(_BINARY_OP_SUBTRACT_FLOAT, (left, right -- res)) {

if (sym_is_const(left) && sym_is_const(right) &&

sym_matches_type(left, &PyFloat_Type) && sym_matches_type(right, &PyFloat_Type))

{

assert(PyFloat_CheckExact(sym_get_const(left)));

assert(PyFloat_CheckExact(sym_get_const(right)));

PyObject *temp = PyFloat_FromDouble(

PyFloat_AS_DOUBLE(sym_get_const(left)) -

PyFloat_AS_DOUBLE(sym_get_const(right)));

if (temp == NULL) {

goto error;

}

res = sym_new_const(ctx, temp);

Py_DECREF(temp);

// TODO gh-115506:

// replace opcode with constant propagated one and update tests!

}

else {

res = sym_new_type(ctx, &PyFloat_Type);

}

}

op(_BINARY_OP_MULTIPLY_FLOAT, (left, right -- res)) {

if (sym_is_const(left) && sym_is_const(right) &&

sym_matches_type(left, &PyFloat_Type) && sym_matches_type(right, &PyFloat_Type))

{

assert(PyFloat_CheckExact(sym_get_const(left)));

assert(PyFloat_CheckExact(sym_get_const(right)));

PyObject *temp = PyFloat_FromDouble(

PyFloat_AS_DOUBLE(sym_get_const(left)) *

PyFloat_AS_DOUBLE(sym_get_const(right)));

if (temp == NULL) {

goto error;

}

res = sym_new_const(ctx, temp);

Py_DECREF(temp);

// TODO gh-115506:

// replace opcode with constant propagated one and update tests!

}

else {

res = sym_new_type(ctx, &PyFloat_Type);

}

}

op(_BINARY_OP_ADD_UNICODE, (left, right -- res)) {

if (sym_is_const(left) && sym_is_const(right) &&

sym_matches_type(left, &PyUnicode_Type) && sym_matches_type(right, &PyUnicode_Type)) {

PyObject *temp = PyUnicode_Concat(sym_get_const(left), sym_get_const(right));

if (temp == NULL) {

goto error;

}

res = sym_new_const(ctx, temp);

Py_DECREF(temp);

}

else {

res = sym_new_type(ctx, &PyUnicode_Type);

}

}

op(_BINARY_SUBSCR_INIT_CALL, (container, sub -- new_frame: _Py_UOpsAbstractFrame *)) {

(void)container;

(void)sub;

new_frame = NULL;

ctx->done = true;

}

op(_TO_BOOL, (value -- res)) {

if (!optimize_to_bool(this_instr, ctx, value, &res)) {

res = sym_new_type(ctx, &PyBool_Type);

}

}

op(_TO_BOOL_BOOL, (value -- res)) {

if (!optimize_to_bool(this_instr, ctx, value, &res)) {

sym_set_type(value, &PyBool_Type);

res = value;

}

}

op(_TO_BOOL_INT, (value -- res)) {

if (!optimize_to_bool(this_instr, ctx, value, &res)) {

sym_set_type(value, &PyLong_Type);

res = sym_new_type(ctx, &PyBool_Type);

}

}

op(_TO_BOOL_LIST, (value -- res)) {

if (!optimize_to_bool(this_instr, ctx, value, &res)) {

sym_set_type(value, &PyList_Type);

res = sym_new_type(ctx, &PyBool_Type);

}

}

op(_TO_BOOL_NONE, (value -- res)) {

if (!optimize_to_bool(this_instr, ctx, value, &res)) {

sym_set_const(value, Py_None);

res = sym_new_const(ctx, Py_False);

}

}

op(_TO_BOOL_STR, (value -- res)) {

if (!optimize_to_bool(this_instr, ctx, value, &res)) {

res = sym_new_type(ctx, &PyBool_Type);

sym_set_type(value, &PyUnicode_Type);

}

}

op(_COMPARE_OP, (left, right -- res)) {

(void)left;

(void)right;

if (oparg & 16) {

res = sym_new_type(ctx, &PyBool_Type);

}

else {

res = _Py_uop_sym_new_not_null(ctx);

}

}

op(_COMPARE_OP_INT, (left, right -- res)) {

(void)left;

(void)right;

res = sym_new_type(ctx, &PyBool_Type);

}

op(_COMPARE_OP_FLOAT, (left, right -- res)) {

(void)left;

(void)right;

res = sym_new_type(ctx, &PyBool_Type);

}

op(_COMPARE_OP_STR, (left, right -- res)) {

(void)left;

(void)right;

res = sym_new_type(ctx, &PyBool_Type);

}

op(_IS_OP, (left, right -- res)) {

(void)left;

(void)right;

res = sym_new_type(ctx, &PyBool_Type);

}

op(_CONTAINS_OP, (left, right -- res)) {

(void)left;

(void)right;

res = sym_new_type(ctx, &PyBool_Type);

}

op(_LOAD_CONST, (-- value)) {

PyObject *val = PyTuple_GET_ITEM(co->co_consts, this_instr->oparg);

int opcode = _Py_IsImmortal(val) ? _LOAD_CONST_INLINE_BORROW : _LOAD_CONST_INLINE;

REPLACE_OP(this_instr, opcode, 0, (uintptr_t)val);

value = sym_new_const(ctx, val);

}

op(_LOAD_CONST_INLINE, (ptr/4 -- value)) {

value = sym_new_const(ctx, ptr);

}

op(_LOAD_CONST_INLINE_BORROW, (ptr/4 -- value)) {

value = sym_new_const(ctx, ptr);

}

op(_LOAD_CONST_INLINE_WITH_NULL, (ptr/4 -- value, null)) {

value = sym_new_const(ctx, ptr);

null = sym_new_null(ctx);

}

op(_LOAD_CONST_INLINE_BORROW_WITH_NULL, (ptr/4 -- value, null)) {

value = sym_new_const(ctx, ptr);

null = sym_new_null(ctx);

}

op(_COPY, (bottom, unused[oparg-1] -- bottom, unused[oparg-1], top)) {

assert(oparg > 0);

top = bottom;

}

op(_SWAP, (bottom_in, unused[oparg-2], top_in --

top_out, unused[oparg-2], bottom_out)) {

bottom_out = bottom_in;

top_out = top_in;

}

op(_LOAD_ATTR_INSTANCE_VALUE, (offset/1, owner -- attr, null if (oparg & 1))) {

attr = sym_new_not_null(ctx);

null = sym_new_null(ctx);

(void)offset;

(void)owner;

}

op(_CHECK_ATTR_MODULE, (dict_version/2, owner -- owner)) {

(void)dict_version;

if (sym_is_const(owner)) {

PyObject *cnst = sym_get_const(owner);

if (PyModule_CheckExact(cnst)) {

PyModuleObject *mod = (PyModuleObject *)cnst;

PyObject *dict = mod->md_dict;

uint64_t watched_mutations = get_mutations(dict);

if (watched_mutations < _Py_MAX_ALLOWED_GLOBALS_MODIFICATIONS) {

PyDict_Watch(GLOBALS_WATCHER_ID, dict);

_Py_BloomFilter_Add(dependencies, dict);

this_instr->opcode = _NOP;

}

}

}

}

op(_LOAD_ATTR, (owner -- attr, self_or_null if (oparg & 1))) {

(void)owner;

attr = sym_new_not_null(ctx);

self_or_null = sym_new_unknown(ctx);

}

op(_LOAD_ATTR_MODULE, (index/1, owner -- attr, null if (oparg & 1))) {

(void)index;

null = sym_new_null(ctx);

attr = NULL;

if (this_instr[-1].opcode == _NOP) {

// Preceding _CHECK_ATTR_MODULE was removed: mod is const and dict is watched.

assert(sym_is_const(owner));

PyModuleObject *mod = (PyModuleObject *)sym_get_const(owner);

assert(PyModule_CheckExact(mod));

PyObject *dict = mod->md_dict;

PyObject *res = convert_global_to_const(this_instr, dict);

if (res != NULL) {

this_instr[-1].opcode = _POP_TOP;

attr = sym_new_const(ctx, res);

}

}

if (attr == NULL) {

/* No conversion made. We don't know what `attr` is. */

attr = sym_new_not_null(ctx);

}

}

op(_LOAD_ATTR_WITH_HINT, (hint/1, owner -- attr, null if (oparg & 1))) {

attr = sym_new_not_null(ctx);

null = sym_new_null(ctx);

(void)hint;

(void)owner;

}

op(_LOAD_ATTR_SLOT, (index/1, owner -- attr, null if (oparg & 1))) {

attr = sym_new_not_null(ctx);

null = sym_new_null(ctx);

(void)index;

(void)owner;

}

op(_LOAD_ATTR_CLASS, (descr/4, owner -- attr, null if (oparg & 1))) {

attr = sym_new_not_null(ctx);

null = sym_new_null(ctx);

(void)descr;

(void)owner;

}

op(_LOAD_ATTR_METHOD_WITH_VALUES, (descr/4, owner -- attr, self if (1))) {

(void)descr;

attr = sym_new_not_null(ctx);

self = owner;

}

op(_LOAD_ATTR_METHOD_NO_DICT, (descr/4, owner -- attr, self if (1))) {

(void)descr;

attr = sym_new_not_null(ctx);

self = owner;

}

op(_LOAD_ATTR_METHOD_LAZY_DICT, (descr/4, owner -- attr, self if (1))) {

(void)descr;

attr = sym_new_not_null(ctx);

self = owner;

}

op(_LOAD_ATTR_PROPERTY_FRAME, (fget/4, owner -- new_frame: _Py_UOpsAbstractFrame *)) {

(void)fget;

(void)owner;

new_frame = NULL;

ctx->done = true;

}

op(_INIT_CALL_BOUND_METHOD_EXACT_ARGS, (callable, unused, unused[oparg] -- func, self, unused[oparg])) {

(void)callable;

func = sym_new_not_null(ctx);

self = sym_new_not_null(ctx);

}

op(_CHECK_FUNCTION_EXACT_ARGS, (callable, self_or_null, unused[oparg] -- callable, self_or_null, unused[oparg])) {

sym_set_type(callable, &PyFunction_Type);

(void)self_or_null;

}

op(_CHECK_CALL_BOUND_METHOD_EXACT_ARGS, (callable, null, unused[oparg] -- callable, null, unused[oparg])) {

sym_set_null(null);

sym_set_type(callable, &PyMethod_Type);

}

op(_INIT_CALL_PY_EXACT_ARGS, (callable, self_or_null, args[oparg] -- new_frame: _Py_UOpsAbstractFrame *)) {

int argcount = oparg;

(void)callable;

PyCodeObject *co = NULL;

assert((this_instr + 2)->opcode == _PUSH_FRAME);

co = get_code_with_logging((this_instr + 2));

if (co == NULL) {

ctx->done = true;

break;

}

assert(self_or_null != NULL);

assert(args != NULL);

if (sym_is_not_null(self_or_null)) {

// Bound method fiddling, same as _INIT_CALL_PY_EXACT_ARGS in VM

args--;

argcount++;

}

if (sym_is_null(self_or_null) || sym_is_not_null(self_or_null)) {

new_frame = frame_new(ctx, co, 0, args, argcount);

} else {

new_frame = frame_new(ctx, co, 0, NULL, 0);

}

}

op(_MAYBE_EXPAND_METHOD, (callable, self_or_null, args[oparg] -- func, maybe_self, args[oparg])) {

(void)callable;

(void)self_or_null;

(void)args;

func = sym_new_not_null(ctx);

maybe_self = sym_new_not_null(ctx);

}

op(_PY_FRAME_GENERAL, (callable, self_or_null, args[oparg] -- new_frame: _Py_UOpsAbstractFrame *)) {

(void)(self_or_null);

(void)(callable);

PyCodeObject *co = NULL;

assert((this_instr + 2)->opcode == _PUSH_FRAME);

co = get_code_with_logging((this_instr + 2));

if (co == NULL) {

ctx->done = true;

break;

}

new_frame = frame_new(ctx, co, 0, NULL, 0);

}

op(_PY_FRAME_KW, (callable, self_or_null, args[oparg], kwnames -- new_frame: _Py_UOpsAbstractFrame *)) {

(void)callable;

(void)self_or_null;

(void)args;

(void)kwnames;

new_frame = NULL;

ctx->done = true;

}

op(_CHECK_AND_ALLOCATE_OBJECT, (type_version/2, callable, null, args[oparg] -- self, init, args[oparg])) {

(void)type_version;

(void)callable;

(void)null;

(void)args;

self = sym_new_not_null(ctx);

init = sym_new_not_null(ctx);

}

op(_CREATE_INIT_FRAME, (self, init, args[oparg] -- init_frame: _Py_UOpsAbstractFrame *)) {

(void)self;

(void)init;

(void)args;

init_frame = NULL;

ctx->done = true;

}

op(_RETURN_VALUE, (retval -- res)) {

SAVE_STACK();

ctx->frame->stack_pointer = stack_pointer;

frame_pop(ctx);

stack_pointer = ctx->frame->stack_pointer;

/* Stack space handling */

assert(corresponding_check_stack == NULL);

assert(co != NULL);

int framesize = co->co_framesize;

assert(framesize > 0);

assert(framesize <= curr_space);

curr_space -= framesize;

co = get_code(this_instr);

if (co == NULL) {

// might be impossible, but bailing is still safe

ctx->done = true;

}

RELOAD_STACK();

res = retval;

}

op(_RETURN_GENERATOR, ( -- res)) {

SYNC_SP();

ctx->frame->stack_pointer = stack_pointer;

frame_pop(ctx);

stack_pointer = ctx->frame->stack_pointer;

res = sym_new_unknown(ctx);

/* Stack space handling */

assert(corresponding_check_stack == NULL);

assert(co != NULL);

int framesize = co->co_framesize;

assert(framesize > 0);

assert(framesize <= curr_space);

curr_space -= framesize;

co = get_code(this_instr);

if (co == NULL) {

// might be impossible, but bailing is still safe

ctx->done = true;

}

}

op(_YIELD_VALUE, (unused -- res)) {

res = sym_new_unknown(ctx);

}

op(_FOR_ITER_GEN_FRAME, ( -- )) {

/* We are about to hit the end of the trace */

ctx->done = true;

}

op(_SEND_GEN_FRAME, ( -- )) {

// We are about to hit the end of the trace:

ctx->done = true;

}

op(_CHECK_STACK_SPACE, ( --)) {

assert(corresponding_check_stack == NULL);

corresponding_check_stack = this_instr;

}

op (_CHECK_STACK_SPACE_OPERAND, ( -- )) {

(void)framesize;

/* We should never see _CHECK_STACK_SPACE_OPERANDs.

Py_UNREACHABLE();

}

op(_PUSH_FRAME, (new_frame: _Py_UOpsAbstractFrame * -- unused if (0))) {

SYNC_SP();

ctx->frame->stack_pointer = stack_pointer;

ctx->frame = new_frame;

ctx->curr_frame_depth++;

stack_pointer = new_frame->stack_pointer;

co = get_code(this_instr);

if (co == NULL) {

// should be about to _EXIT_TRACE anyway

ctx->done = true;

break;

}

/* Stack space handling */

int framesize = co->co_framesize;

assert(framesize > 0);

curr_space += framesize;

if (curr_space < 0 || curr_space > INT32_MAX) {

// won't fit in signed 32-bit int

ctx->done = true;

break;

}

max_space = curr_space > max_space ? curr_space : max_space;

if (first_valid_check_stack == NULL) {

first_valid_check_stack = corresponding_check_stack;

}

else if (corresponding_check_stack) {

// delete all but the first valid _CHECK_STACK_SPACE

corresponding_check_stack->opcode = _NOP;

}

corresponding_check_stack = NULL;

}

op(_UNPACK_SEQUENCE, (seq -- values[oparg])) {

/* This has to be done manually */

(void)seq;

for (int i = 0; i < oparg; i++) {

values[i] = sym_new_unknown(ctx);

}

}

op(_UNPACK_EX, (seq -- values[oparg & 0xFF], unused, unused[oparg >> 8])) {

/* This has to be done manually */

(void)seq;

int totalargs = (oparg & 0xFF) + (oparg >> 8) + 1;

for (int i = 0; i < totalargs; i++) {

values[i] = sym_new_unknown(ctx);

}

}

op(_ITER_NEXT_RANGE, (iter -- iter, next)) {

next = sym_new_type(ctx, &PyLong_Type);

(void)iter;

}

op(_GUARD_IS_TRUE_POP, (flag -- )) {

if (sym_is_const(flag)) {

PyObject *value = sym_get_const(flag);

assert(value != NULL);

eliminate_pop_guard(this_instr, value != Py_True);

}

}

op(_GUARD_IS_FALSE_POP, (flag -- )) {

if (sym_is_const(flag)) {

PyObject *value = sym_get_const(flag);

assert(value != NULL);

eliminate_pop_guard(this_instr, value != Py_False);

}

}

op(_GUARD_IS_NONE_POP, (flag -- )) {

if (sym_is_const(flag)) {

PyObject *value = sym_get_const(flag);

assert(value != NULL);

eliminate_pop_guard(this_instr, !Py_IsNone(value));

}

else if (sym_has_type(flag)) {

assert(!sym_matches_type(flag, &_PyNone_Type));

eliminate_pop_guard(this_instr, true);

}

}

op(_GUARD_IS_NOT_NONE_POP, (flag -- )) {

if (sym_is_const(flag)) {

PyObject *value = sym_get_const(flag);

assert(value != NULL);

eliminate_pop_guard(this_instr, Py_IsNone(value));

}

else if (sym_has_type(flag)) {

assert(!sym_matches_type(flag, &_PyNone_Type));

eliminate_pop_guard(this_instr, false);

}

}

op(_CHECK_PEP_523, (--)) {

/* Setting the eval frame function invalidates

if (_PyInterpreterState_GET()->eval_frame == NULL) {

REPLACE_OP(this_instr, _NOP, 0 ,0);

}

}

op(_LOAD_SPECIAL, (owner -- attr, self_or_null)) {

(void)owner;

attr = sym_new_not_null(ctx);

self_or_null = sym_new_unknown(ctx);

}

op(_JUMP_TO_TOP, (--)) {

ctx->done = true;

}

op(_EXIT_TRACE, (exit_p/4 --)) {

(void)exit_p;

ctx->done = true;

}

}