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Code Issues Releases Activity

GH-122294: Burn in the addresses of side exits (GH-122295)

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This commit is contained in:
Brandt Bucher 2024-07-26 09:40:15 -07:00 committed by GitHub
parent db2d8b6db1
commit 64857d849f
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GPG Key ID: B5690EEEBB952194
6 changed files with 24 additions and 19 deletions
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4
Include/internal/pycore_uop_metadata.h generated
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@ -252,7 +252,7 @@ const uint16_t _PyUop_Flags[MAX_UOP_ID+1] = {
[_SET_IP] = 0,
[_CHECK_STACK_SPACE_OPERAND] = HAS_DEOPT_FLAG,
[_SAVE_RETURN_OFFSET] = HAS_ARG_FLAG,
[_EXIT_TRACE] = HAS_ARG_FLAG | HAS_ESCAPES_FLAG,
[_EXIT_TRACE] = HAS_ESCAPES_FLAG,
[_CHECK_VALIDITY] = HAS_DEOPT_FLAG,
[_LOAD_CONST_INLINE] = HAS_PURE_FLAG,
[_LOAD_CONST_INLINE_BORROW] = HAS_PURE_FLAG,
@ -261,7 +261,7 @@ const uint16_t _PyUop_Flags[MAX_UOP_ID+1] = {
[_LOAD_CONST_INLINE_BORROW_WITH_NULL] = HAS_PURE_FLAG,
[_CHECK_FUNCTION] = HAS_DEOPT_FLAG,
[_INTERNAL_INCREMENT_OPT_COUNTER] = 0,
[_DYNAMIC_EXIT] = HAS_ARG_FLAG | HAS_ESCAPES_FLAG,
[_DYNAMIC_EXIT] = HAS_ESCAPES_FLAG,
[_START_EXECUTOR] = 0,
[_FATAL_ERROR] = 0,
[_CHECK_VALIDITY_AND_SET_IP] = HAS_DEOPT_FLAG,

12
Python/bytecodes.c
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@ -4609,8 +4609,8 @@ dummy_func(
#endif
}
tier2 op(_EXIT_TRACE, (--)) {
_PyExitData *exit = &current_executor->exits[oparg];
tier2 op(_EXIT_TRACE, (exit_p/4 --)) {
_PyExitData *exit = (_PyExitData *)exit_p;
PyCodeObject *code = _PyFrame_GetCode(frame);
_Py_CODEUNIT *target = _PyCode_CODE(code) + exit->target;
#if defined(Py_DEBUG) && !defined(_Py_JIT)
@ -4619,7 +4619,7 @@ dummy_func(
printf("SIDE EXIT: [UOp ");
_PyUOpPrint(&next_uop[-1]);
printf(", exit %u, temp %d, target %d -> %s]\n",
oparg, exit->temperature.as_counter,
exit - current_executor->exits, exit->temperature.as_counter,
(int)(target - _PyCode_CODE(code)),
_PyOpcode_OpName[target->op.code]);
}
@ -4698,9 +4698,9 @@ dummy_func(
exe->count++;
}
tier2 op(_DYNAMIC_EXIT, (--)) {
tier2 op(_DYNAMIC_EXIT, (exit_p/4 --)) {
tstate->previous_executor = (PyObject *)current_executor;
_PyExitData *exit = (_PyExitData *)&current_executor->exits[oparg];
_PyExitData *exit = (_PyExitData *)exit_p;
_Py_CODEUNIT *target = frame->instr_ptr;
#if defined(Py_DEBUG) && !defined(_Py_JIT)
OPT_HIST(trace_uop_execution_counter, trace_run_length_hist);
@ -4708,7 +4708,7 @@ dummy_func(
printf("DYNAMIC EXIT: [UOp ");
_PyUOpPrint(&next_uop[-1]);
printf(", exit %u, temp %d, target %d -> %s]\n",
oparg, exit->temperature.as_counter,
exit - current_executor->exits, exit->temperature.as_counter,
(int)(target - _PyCode_CODE(_PyFrame_GetCode(frame))),
_PyOpcode_OpName[target->op.code]);
}

12
Python/executor_cases.c.h generated
View File

@ -5044,8 +5044,8 @@
}
case _EXIT_TRACE: {
oparg = CURRENT_OPARG();
_PyExitData *exit = &current_executor->exits[oparg];
PyObject *exit_p = (PyObject *)CURRENT_OPERAND();
_PyExitData *exit = (_PyExitData *)exit_p;
PyCodeObject *code = _PyFrame_GetCode(frame);
_Py_CODEUNIT *target = _PyCode_CODE(code) + exit->target;
#if defined(Py_DEBUG) && !defined(_Py_JIT)
@ -5054,7 +5054,7 @@
printf("SIDE EXIT: [UOp ");
_PyUOpPrint(&next_uop[-1]);
printf(", exit %u, temp %d, target %d -> %s]\n",
oparg, exit->temperature.as_counter,
exit - current_executor->exits, exit->temperature.as_counter,
(int)(target - _PyCode_CODE(code)),
_PyOpcode_OpName[target->op.code]);
}
@ -5182,9 +5182,9 @@
}
case _DYNAMIC_EXIT: {
oparg = CURRENT_OPARG();
PyObject *exit_p = (PyObject *)CURRENT_OPERAND();
tstate->previous_executor = (PyObject *)current_executor;
_PyExitData *exit = (_PyExitData *)&current_executor->exits[oparg];
_PyExitData *exit = (_PyExitData *)exit_p;
_Py_CODEUNIT *target = frame->instr_ptr;
#if defined(Py_DEBUG) && !defined(_Py_JIT)
OPT_HIST(trace_uop_execution_counter, trace_run_length_hist);
@ -5192,7 +5192,7 @@
printf("DYNAMIC EXIT: [UOp ");
_PyUOpPrint(&next_uop[-1]);
printf(", exit %u, temp %d, target %d -> %s]\n",
oparg, exit->temperature.as_counter,
exit - current_executor->exits, exit->temperature.as_counter,
(int)(target - _PyCode_CODE(_PyFrame_GetCode(frame))),
_PyOpcode_OpName[target->op.code]);
}

10
Python/optimizer.c
View File

@ -1153,13 +1153,15 @@ make_executor_from_uops(_PyUOpInstruction *buffer, int length, const _PyBloomFil
*dest = buffer[i];
assert(opcode != _POP_JUMP_IF_FALSE && opcode != _POP_JUMP_IF_TRUE);
if (opcode == _EXIT_TRACE) {
executor->exits[next_exit].target = buffer[i].target;
dest->oparg = next_exit;
_PyExitData *exit = &executor->exits[next_exit];
exit->target = buffer[i].target;
dest->operand = (uint64_t)exit;
next_exit--;
}
if (opcode == _DYNAMIC_EXIT) {
executor->exits[next_exit].target = 0;
dest->oparg = next_exit;
_PyExitData *exit = &executor->exits[next_exit];
exit->target = 0;
dest->operand = (uint64_t)exit;
next_exit--;
}
}

3
Python/optimizer_bytecodes.c
View File

@ -788,7 +788,8 @@ dummy_func(void) {
ctx->done = true;
}
op(_EXIT_TRACE, (--)) {
op(_EXIT_TRACE, (exit_p/4 --)) {
(void)exit_p;
ctx->done = true;
}

2
Python/optimizer_cases.c.h generated
View File

@ -2163,6 +2163,8 @@
}
case _EXIT_TRACE: {
PyObject *exit_p = (PyObject *)this_instr->operand;
(void)exit_p;
ctx->done = true;
break;
}