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gh-115999: Disable the specializing adaptive interpreter in free-threaded builds (#116013)

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For now, disable all specialization when the GIL might be disabled.
This commit is contained in:
Brett Simmers 2024-02-29 18:53:32 -08:00 • committed by GitHub
parent 2e94a6687c
commit 339c8e1c13
No known key found for this signature in database
GPG key ID: B5690EEEBB952194
9 changed files with 96 additions and 3 deletions
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5
Include/internal/pycore_code.h
View file

@ -245,7 +245,12 @@ extern int _PyLineTable_PreviousAddressRange(PyCodeAddressRange *range);
/** API for executors */
extern void _PyCode_Clear_Executors(PyCodeObject *code);
#ifdef Py_GIL_DISABLED
// gh-115999 tracks progress on addressing this.
#define ENABLE_SPECIALIZATION 0
#else
#define ENABLE_SPECIALIZATION 1
#endif
/* Specialization functions */

6
Lib/test/test_capi/test_opt.py
View file

@ -8,7 +8,7 @@ import os
import _testinternalcapi
from test.support import script_helper
from test.support import script_helper, requires_specialization
@contextlib.contextmanager
@ -31,6 +31,7 @@ def clear_executors(func):
func.__code__ = func.__code__.replace()
@requires_specialization
class TestOptimizerAPI(unittest.TestCase):
def test_new_counter_optimizer_dealloc(self):
@ -133,6 +134,7 @@ def get_opnames(ex):
return set(iter_opnames(ex))
@requires_specialization
class TestExecutorInvalidation(unittest.TestCase):
def setUp(self):
@ -211,6 +213,7 @@ class TestExecutorInvalidation(unittest.TestCase):
self.assertIsNone(exe)
@requires_specialization
@unittest.skipIf(os.getenv("PYTHON_UOPS_OPTIMIZE") == "0", "Needs uop optimizer to run.")
class TestUops(unittest.TestCase):
@ -572,6 +575,7 @@ class TestUops(unittest.TestCase):
self.assertLessEqual(count, 2)
@requires_specialization
@unittest.skipIf(os.getenv("PYTHON_UOPS_OPTIMIZE") == "0", "Needs uop optimizer to run.")
class TestUopsOptimization(unittest.TestCase):

8
Lib/test/test_generated_cases.py
View file

@ -350,12 +350,15 @@ class TestGeneratedCases(unittest.TestCase):
output = """
TARGET(OP) {
_Py_CODEUNIT *this_instr = frame->instr_ptr = next_instr;
(void)this_instr;
next_instr += 4;
INSTRUCTION_STATS(OP);
PyObject *value;
value = stack_pointer[-1];
uint16_t counter = read_u16(&this_instr[1].cache);
(void)counter;
uint32_t extra = read_u32(&this_instr[2].cache);
(void)extra;
stack_pointer += -1;
DISPATCH();
}
@ -399,6 +402,7 @@ class TestGeneratedCases(unittest.TestCase):
INSTRUCTION_STATS(OP);
PREDICTED(OP);
_Py_CODEUNIT *this_instr = next_instr - 6;
(void)this_instr;
PyObject *right;
PyObject *left;
PyObject *arg2;
@ -408,6 +412,7 @@ class TestGeneratedCases(unittest.TestCase):
left = stack_pointer[-2];
{
uint16_t counter = read_u16(&this_instr[1].cache);
(void)counter;
op1(left, right);
}
/* Skip 2 cache entries */
@ -415,6 +420,7 @@ class TestGeneratedCases(unittest.TestCase):
arg2 = stack_pointer[-3];
{
uint32_t extra = read_u32(&this_instr[4].cache);
(void)extra;
res = op2(arg2, left, right);
}
stack_pointer[-3] = res;
@ -424,6 +430,7 @@ class TestGeneratedCases(unittest.TestCase):
TARGET(OP1) {
_Py_CODEUNIT *this_instr = frame->instr_ptr = next_instr;
(void)this_instr;
next_instr += 2;
INSTRUCTION_STATS(OP1);
PyObject *right;
@ -431,6 +438,7 @@ class TestGeneratedCases(unittest.TestCase):
right = stack_pointer[-1];
left = stack_pointer[-2];
uint16_t counter = read_u16(&this_instr[1].cache);
(void)counter;
op1(left, right);
DISPATCH();
}

5
Lib/test/test_monitoring.py
View file

@ -9,6 +9,7 @@ import textwrap
import types
import unittest
import asyncio
from test.support import requires_specialization
PAIR = (0,1)
@ -815,6 +816,9 @@ class ExceptionMonitoringTest(CheckEvents):
self.check_events(func1, [("raise", KeyError)])
# gh-116090: This test doesn't really require specialization, but running
# it without specialization exposes a monitoring bug.
@requires_specialization
def test_implicit_stop_iteration(self):
def gen():
@ -963,6 +967,7 @@ class ExceptionMonitoringTest(CheckEvents):
)
self.assertEqual(events[0], ("throw", IndexError))
@requires_specialization
def test_no_unwind_for_shim_frame(self):
class B:

4
Lib/test/test_opcache.py
View file

@ -4,7 +4,7 @@ import dis
import threading
import types
import unittest
from test.support import threading_helper, check_impl_detail
from test.support import threading_helper, check_impl_detail, requires_specialization
# Skip this module on other interpreters, it is cpython specific:
if check_impl_detail(cpython=False):
@ -506,6 +506,7 @@ class TestCallCache(unittest.TestCase):
@threading_helper.requires_working_threading()
@requires_specialization
class TestRacesDoNotCrash(unittest.TestCase):
# Careful with these. Bigger numbers have a higher chance of catching bugs,
# but you can also burn through a *ton* of type/dict/function versions:
@ -1021,6 +1022,7 @@ class TestRacesDoNotCrash(unittest.TestCase):
class C:
pass
@requires_specialization
class TestInstanceDict(unittest.TestCase):
def setUp(self):

3
Lib/test/test_type_cache.py
View file

@ -2,7 +2,7 @@
import unittest
import dis
from test import support
from test.support import import_helper
from test.support import import_helper, requires_specialization
try:
from sys import _clear_type_cache
except ImportError:
@ -94,6 +94,7 @@ class TypeCacheTests(unittest.TestCase):
@support.cpython_only
@requires_specialization
class TypeCacheWithSpecializationTests(unittest.TestCase):
def tearDown(self):
_clear_type_cache()

8
Python/ceval_macros.h
View file

@ -296,11 +296,19 @@ GETITEM(PyObject *v, Py_ssize_t i) {
#define ADAPTIVE_COUNTER_IS_MAX(COUNTER) \
(((COUNTER) >> ADAPTIVE_BACKOFF_BITS) == ((1 << MAX_BACKOFF_VALUE) - 1))
#ifdef Py_GIL_DISABLED
#define DECREMENT_ADAPTIVE_COUNTER(COUNTER) \
do { \
/* gh-115999 tracks progress on addressing this. */ \
static_assert(0, "The specializing interpreter is not yet thread-safe"); \
} while (0);
#else
#define DECREMENT_ADAPTIVE_COUNTER(COUNTER) \
do { \
assert(!ADAPTIVE_COUNTER_IS_ZERO((COUNTER))); \
(COUNTER) -= (1 << ADAPTIVE_BACKOFF_BITS); \
} while (0);
#endif
#define INCREMENT_ADAPTIVE_COUNTER(COUNTER) \
do { \

55
Python/generated_cases.c.h generated
View file

@ -104,6 +104,7 @@
INSTRUCTION_STATS(BINARY_OP);
PREDICTED(BINARY_OP);
_Py_CODEUNIT *this_instr = next_instr - 2;
(void)this_instr;
PyObject *rhs;
PyObject *lhs;
PyObject *res;
@ -112,6 +113,7 @@
lhs = stack_pointer[-2];
{
uint16_t counter = read_u16(&this_instr[1].cache);
(void)counter;
#if ENABLE_SPECIALIZATION
if (ADAPTIVE_COUNTER_IS_ZERO(counter)) {
next_instr = this_instr;
@ -419,6 +421,7 @@
INSTRUCTION_STATS(BINARY_SUBSCR);
PREDICTED(BINARY_SUBSCR);
_Py_CODEUNIT *this_instr = next_instr - 2;
(void)this_instr;
PyObject *sub;
PyObject *container;
PyObject *res;
@ -427,6 +430,7 @@
container = stack_pointer[-2];
{
uint16_t counter = read_u16(&this_instr[1].cache);
(void)counter;
#if ENABLE_SPECIALIZATION
if (ADAPTIVE_COUNTER_IS_ZERO(counter)) {
next_instr = this_instr;
@ -747,6 +751,7 @@
INSTRUCTION_STATS(CALL);
PREDICTED(CALL);
_Py_CODEUNIT *this_instr = next_instr - 4;
(void)this_instr;
PyObject **args;
PyObject *self_or_null;
PyObject *callable;
@ -757,6 +762,7 @@
callable = stack_pointer[-2 - oparg];
{
uint16_t counter = read_u16(&this_instr[1].cache);
(void)counter;
#if ENABLE_SPECIALIZATION
if (ADAPTIVE_COUNTER_IS_ZERO(counter)) {
next_instr = this_instr;
@ -1176,6 +1182,7 @@
INSTRUCTION_STATS(CALL_FUNCTION_EX);
PREDICTED(CALL_FUNCTION_EX);
_Py_CODEUNIT *this_instr = next_instr - 1;
(void)this_instr;
PyObject *kwargs = NULL;
PyObject *callargs;
PyObject *func;
@ -1336,6 +1343,7 @@
INSTRUCTION_STATS(CALL_KW);
PREDICTED(CALL_KW);
_Py_CODEUNIT *this_instr = next_instr - 1;
(void)this_instr;
PyObject *kwnames;
PyObject **args;
PyObject *self_or_null;
@ -1937,6 +1945,7 @@
TARGET(CLEANUP_THROW) {
_Py_CODEUNIT *this_instr = frame->instr_ptr = next_instr;
(void)this_instr;
next_instr += 1;
INSTRUCTION_STATS(CLEANUP_THROW);
PyObject *exc_value;
@ -1973,6 +1982,7 @@
INSTRUCTION_STATS(COMPARE_OP);
PREDICTED(COMPARE_OP);
_Py_CODEUNIT *this_instr = next_instr - 2;
(void)this_instr;
PyObject *right;
PyObject *left;
PyObject *res;
@ -1981,6 +1991,7 @@
left = stack_pointer[-2];
{
uint16_t counter = read_u16(&this_instr[1].cache);
(void)counter;
#if ENABLE_SPECIALIZATION
if (ADAPTIVE_COUNTER_IS_ZERO(counter)) {
next_instr = this_instr;
@ -2324,6 +2335,7 @@
TARGET(END_ASYNC_FOR) {
_Py_CODEUNIT *this_instr = frame->instr_ptr = next_instr;
(void)this_instr;
next_instr += 1;
INSTRUCTION_STATS(END_ASYNC_FOR);
PyObject *exc;
@ -2460,12 +2472,14 @@
INSTRUCTION_STATS(FOR_ITER);
PREDICTED(FOR_ITER);
_Py_CODEUNIT *this_instr = next_instr - 2;
(void)this_instr;
PyObject *iter;
PyObject *next;
// _SPECIALIZE_FOR_ITER
iter = stack_pointer[-1];
{
uint16_t counter = read_u16(&this_instr[1].cache);
(void)counter;
#if ENABLE_SPECIALIZATION
if (ADAPTIVE_COUNTER_IS_ZERO(counter)) {
next_instr = this_instr;
@ -2884,6 +2898,7 @@
TARGET(INSTRUMENTED_CALL) {
_Py_CODEUNIT *this_instr = frame->instr_ptr = next_instr;
(void)this_instr;
next_instr += 4;
INSTRUCTION_STATS(INSTRUMENTED_CALL);
/* Skip 3 cache entries */
@ -2909,6 +2924,7 @@
TARGET(INSTRUMENTED_CALL_KW) {
_Py_CODEUNIT *this_instr = frame->instr_ptr = next_instr;
(void)this_instr;
next_instr += 1;
INSTRUCTION_STATS(INSTRUMENTED_CALL_KW);
int is_meth = PEEK(oparg + 2) != NULL;
@ -2925,6 +2941,7 @@
TARGET(INSTRUMENTED_END_FOR) {
_Py_CODEUNIT *this_instr = frame->instr_ptr = next_instr;
(void)this_instr;
next_instr += 1;
INSTRUCTION_STATS(INSTRUMENTED_END_FOR);
PyObject *value;
@ -2947,6 +2964,7 @@
TARGET(INSTRUMENTED_END_SEND) {
_Py_CODEUNIT *this_instr = frame->instr_ptr = next_instr;
(void)this_instr;
next_instr += 1;
INSTRUCTION_STATS(INSTRUMENTED_END_SEND);
PyObject *value;
@ -2968,6 +2986,7 @@
TARGET(INSTRUMENTED_FOR_ITER) {
_Py_CODEUNIT *this_instr = frame->instr_ptr = next_instr;
(void)this_instr;
next_instr += 2;
INSTRUCTION_STATS(INSTRUMENTED_FOR_ITER);
/* Skip 1 cache entry */
@ -3000,6 +3019,7 @@
TARGET(INSTRUMENTED_INSTRUCTION) {
_Py_CODEUNIT *this_instr = frame->instr_ptr = next_instr;
(void)this_instr;
next_instr += 1;
INSTRUCTION_STATS(INSTRUMENTED_INSTRUCTION);
int next_opcode = _Py_call_instrumentation_instruction(
@ -3016,6 +3036,7 @@
TARGET(INSTRUMENTED_JUMP_BACKWARD) {
_Py_CODEUNIT *this_instr = frame->instr_ptr = next_instr;
(void)this_instr;
next_instr += 2;
INSTRUCTION_STATS(INSTRUMENTED_JUMP_BACKWARD);
/* Skip 1 cache entry */
@ -3026,6 +3047,7 @@
TARGET(INSTRUMENTED_JUMP_FORWARD) {
_Py_CODEUNIT *this_instr = frame->instr_ptr = next_instr;
(void)this_instr;
next_instr += 1;
INSTRUCTION_STATS(INSTRUMENTED_JUMP_FORWARD);
INSTRUMENTED_JUMP(this_instr, next_instr + oparg, PY_MONITORING_EVENT_JUMP);
@ -3034,6 +3056,7 @@
TARGET(INSTRUMENTED_LOAD_SUPER_ATTR) {
_Py_CODEUNIT *this_instr = frame->instr_ptr = next_instr;
(void)this_instr;
next_instr += 2;
INSTRUCTION_STATS(INSTRUMENTED_LOAD_SUPER_ATTR);
/* Skip 1 cache entry */
@ -3045,6 +3068,7 @@
TARGET(INSTRUMENTED_POP_JUMP_IF_FALSE) {
_Py_CODEUNIT *this_instr = frame->instr_ptr = next_instr;
(void)this_instr;
next_instr += 2;
INSTRUCTION_STATS(INSTRUMENTED_POP_JUMP_IF_FALSE);
/* Skip 1 cache entry */
@ -3061,6 +3085,7 @@
TARGET(INSTRUMENTED_POP_JUMP_IF_NONE) {
_Py_CODEUNIT *this_instr = frame->instr_ptr = next_instr;
(void)this_instr;
next_instr += 2;
INSTRUCTION_STATS(INSTRUMENTED_POP_JUMP_IF_NONE);
/* Skip 1 cache entry */
@ -3083,6 +3108,7 @@
TARGET(INSTRUMENTED_POP_JUMP_IF_NOT_NONE) {
_Py_CODEUNIT *this_instr = frame->instr_ptr = next_instr;
(void)this_instr;
next_instr += 2;
INSTRUCTION_STATS(INSTRUMENTED_POP_JUMP_IF_NOT_NONE);
/* Skip 1 cache entry */
@ -3105,6 +3131,7 @@
TARGET(INSTRUMENTED_POP_JUMP_IF_TRUE) {
_Py_CODEUNIT *this_instr = frame->instr_ptr = next_instr;
(void)this_instr;
next_instr += 2;
INSTRUCTION_STATS(INSTRUMENTED_POP_JUMP_IF_TRUE);
/* Skip 1 cache entry */
@ -3121,6 +3148,7 @@
TARGET(INSTRUMENTED_RESUME) {
_Py_CODEUNIT *this_instr = frame->instr_ptr = next_instr;
(void)this_instr;
next_instr += 1;
INSTRUCTION_STATS(INSTRUMENTED_RESUME);
uintptr_t global_version = _Py_atomic_load_uintptr_relaxed(&tstate->eval_breaker) & ~_PY_EVAL_EVENTS_MASK;
@ -3151,6 +3179,7 @@
TARGET(INSTRUMENTED_RETURN_CONST) {
_Py_CODEUNIT *this_instr = frame->instr_ptr = next_instr;
(void)this_instr;
next_instr += 1;
INSTRUCTION_STATS(INSTRUMENTED_RETURN_CONST);
PyObject *retval = GETITEM(FRAME_CO_CONSTS, oparg);
@ -3174,6 +3203,7 @@
TARGET(INSTRUMENTED_RETURN_VALUE) {
_Py_CODEUNIT *this_instr = frame->instr_ptr = next_instr;
(void)this_instr;
next_instr += 1;
INSTRUCTION_STATS(INSTRUMENTED_RETURN_VALUE);
PyObject *retval;
@ -3198,6 +3228,7 @@
TARGET(INSTRUMENTED_YIELD_VALUE) {
_Py_CODEUNIT *this_instr = frame->instr_ptr = next_instr;
(void)this_instr;
next_instr += 1;
INSTRUCTION_STATS(INSTRUMENTED_YIELD_VALUE);
PyObject *retval;
@ -3261,6 +3292,7 @@
TARGET(JUMP_BACKWARD) {
_Py_CODEUNIT *this_instr = frame->instr_ptr = next_instr;
(void)this_instr;
next_instr += 2;
INSTRUCTION_STATS(JUMP_BACKWARD);
/* Skip 1 cache entry */
@ -3387,6 +3419,7 @@
INSTRUCTION_STATS(LOAD_ATTR);
PREDICTED(LOAD_ATTR);
_Py_CODEUNIT *this_instr = next_instr - 10;
(void)this_instr;
PyObject *owner;
PyObject *attr;
PyObject *self_or_null = NULL;
@ -3394,6 +3427,7 @@
owner = stack_pointer[-1];
{
uint16_t counter = read_u16(&this_instr[1].cache);
(void)counter;
#if ENABLE_SPECIALIZATION
if (ADAPTIVE_COUNTER_IS_ZERO(counter)) {
PyObject *name = GETITEM(FRAME_CO_NAMES, oparg>>1);
@ -4083,11 +4117,13 @@
INSTRUCTION_STATS(LOAD_GLOBAL);
PREDICTED(LOAD_GLOBAL);
_Py_CODEUNIT *this_instr = next_instr - 5;
(void)this_instr;
PyObject *res;
PyObject *null = NULL;
// _SPECIALIZE_LOAD_GLOBAL
{
uint16_t counter = read_u16(&this_instr[1].cache);
(void)counter;
#if ENABLE_SPECIALIZATION
if (ADAPTIVE_COUNTER_IS_ZERO(counter)) {
PyObject *name = GETITEM(FRAME_CO_NAMES, oparg>>1);
@ -4279,6 +4315,7 @@
INSTRUCTION_STATS(LOAD_SUPER_ATTR);
PREDICTED(LOAD_SUPER_ATTR);
_Py_CODEUNIT *this_instr = next_instr - 2;
(void)this_instr;
PyObject *class;
PyObject *global_super;
PyObject *self;
@ -4289,6 +4326,7 @@
global_super = stack_pointer[-3];
{
uint16_t counter = read_u16(&this_instr[1].cache);
(void)counter;
#if ENABLE_SPECIALIZATION
int load_method = oparg & 1;
if (ADAPTIVE_COUNTER_IS_ZERO(counter)) {
@ -4565,6 +4603,7 @@
TARGET(POP_JUMP_IF_FALSE) {
_Py_CODEUNIT *this_instr = frame->instr_ptr = next_instr;
(void)this_instr;
next_instr += 2;
INSTRUCTION_STATS(POP_JUMP_IF_FALSE);
PyObject *cond;
@ -4582,6 +4621,7 @@
TARGET(POP_JUMP_IF_NONE) {
_Py_CODEUNIT *this_instr = frame->instr_ptr = next_instr;
(void)this_instr;
next_instr += 2;
INSTRUCTION_STATS(POP_JUMP_IF_NONE);
PyObject *value;
@ -4615,6 +4655,7 @@
TARGET(POP_JUMP_IF_NOT_NONE) {
_Py_CODEUNIT *this_instr = frame->instr_ptr = next_instr;
(void)this_instr;
next_instr += 2;
INSTRUCTION_STATS(POP_JUMP_IF_NOT_NONE);
PyObject *value;
@ -4648,6 +4689,7 @@
TARGET(POP_JUMP_IF_TRUE) {
_Py_CODEUNIT *this_instr = frame->instr_ptr = next_instr;
(void)this_instr;
next_instr += 2;
INSTRUCTION_STATS(POP_JUMP_IF_TRUE);
PyObject *cond;
@ -4709,6 +4751,7 @@
TARGET(RAISE_VARARGS) {
_Py_CODEUNIT *this_instr = frame->instr_ptr = next_instr;
(void)this_instr;
next_instr += 1;
INSTRUCTION_STATS(RAISE_VARARGS);
PyObject **args;
@ -4738,6 +4781,7 @@
TARGET(RERAISE) {
_Py_CODEUNIT *this_instr = frame->instr_ptr = next_instr;
(void)this_instr;
next_instr += 1;
INSTRUCTION_STATS(RERAISE);
PyObject *exc;
@ -4779,6 +4823,7 @@
INSTRUCTION_STATS(RESUME);
PREDICTED(RESUME);
_Py_CODEUNIT *this_instr = next_instr - 1;
(void)this_instr;
assert(frame == tstate->current_frame);
if (tstate->tracing == 0) {
uintptr_t global_version =
@ -4916,6 +4961,7 @@
INSTRUCTION_STATS(SEND);
PREDICTED(SEND);
_Py_CODEUNIT *this_instr = next_instr - 2;
(void)this_instr;
PyObject *receiver;
PyObject *v;
PyObject *retval;
@ -4923,6 +4969,7 @@
receiver = stack_pointer[-2];
{
uint16_t counter = read_u16(&this_instr[1].cache);
(void)counter;
#if ENABLE_SPECIALIZATION
if (ADAPTIVE_COUNTER_IS_ZERO(counter)) {
next_instr = this_instr;
@ -5103,12 +5150,14 @@
INSTRUCTION_STATS(STORE_ATTR);
PREDICTED(STORE_ATTR);
_Py_CODEUNIT *this_instr = next_instr - 5;
(void)this_instr;
PyObject *owner;
PyObject *v;
// _SPECIALIZE_STORE_ATTR
owner = stack_pointer[-1];
{
uint16_t counter = read_u16(&this_instr[1].cache);
(void)counter;
#if ENABLE_SPECIALIZATION
if (ADAPTIVE_COUNTER_IS_ZERO(counter)) {
PyObject *name = GETITEM(FRAME_CO_NAMES, oparg);
@ -5392,6 +5441,7 @@
INSTRUCTION_STATS(STORE_SUBSCR);
PREDICTED(STORE_SUBSCR);
_Py_CODEUNIT *this_instr = next_instr - 2;
(void)this_instr;
PyObject *sub;
PyObject *container;
PyObject *v;
@ -5400,6 +5450,7 @@
container = stack_pointer[-2];
{
uint16_t counter = read_u16(&this_instr[1].cache);
(void)counter;
#if ENABLE_SPECIALIZATION
if (ADAPTIVE_COUNTER_IS_ZERO(counter)) {
next_instr = this_instr;
@ -5495,12 +5546,14 @@
INSTRUCTION_STATS(TO_BOOL);
PREDICTED(TO_BOOL);
_Py_CODEUNIT *this_instr = next_instr - 4;
(void)this_instr;
PyObject *value;
PyObject *res;
// _SPECIALIZE_TO_BOOL
value = stack_pointer[-1];
{
uint16_t counter = read_u16(&this_instr[1].cache);
(void)counter;
#if ENABLE_SPECIALIZATION
if (ADAPTIVE_COUNTER_IS_ZERO(counter)) {
next_instr = this_instr;
@ -5704,11 +5757,13 @@
INSTRUCTION_STATS(UNPACK_SEQUENCE);
PREDICTED(UNPACK_SEQUENCE);
_Py_CODEUNIT *this_instr = next_instr - 2;
(void)this_instr;
PyObject *seq;
// _SPECIALIZE_UNPACK_SEQUENCE
seq = stack_pointer[-1];
{
uint16_t counter = read_u16(&this_instr[1].cache);
(void)counter;
#if ENABLE_SPECIALIZATION
if (ADAPTIVE_COUNTER_IS_ZERO(counter)) {
next_instr = this_instr;

5
Tools/cases_generator/tier1_generator.py
View file

@ -87,6 +87,8 @@ def write_uop(
out.emit(
f"{type}{cache.name} = {reader}(&this_instr[{offset}].cache);\n"
)
if inst.family is None:
out.emit(f"(void){cache.name};\n")
offset += cache.size
emit_tokens(out, uop, stack, inst)
if uop.properties.stores_sp:
@ -131,8 +133,10 @@ def generate_tier1(
needs_this = uses_this(inst)
out.emit("\n")
out.emit(f"TARGET({name}) {{\n")
unused_guard = "(void)this_instr;\n" if inst.family is None else ""
if needs_this and not inst.is_target:
out.emit(f"_Py_CODEUNIT *this_instr = frame->instr_ptr = next_instr;\n")
out.emit(unused_guard)
else:
out.emit(f"frame->instr_ptr = next_instr;\n")
out.emit(f"next_instr += {inst.size};\n")
@ -141,6 +145,7 @@ def generate_tier1(
out.emit(f"PREDICTED({name});\n")
if needs_this:
out.emit(f"_Py_CODEUNIT *this_instr = next_instr - {inst.size};\n")
out.emit(unused_guard)
if inst.family is not None:
out.emit(
f"static_assert({inst.family.size} == {inst.size-1}"