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gh-106581: Project through calls (#108067)

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This finishes the work begun in gh-107760. When, while projecting a superblock, we encounter a call to a short, simple function, the superblock will now enter the function using `_PUSH_FRAME`, continue through it, and leave it using `_POP_FRAME`, and then continue through the original code. Multiple frame pushes and pops are even possible. It is also possible to stop appending to the superblock in the middle of a called function, when running out of space or encountering an unsupported bytecode.
This commit is contained in:
Guido van Rossum 2023-08-17 11:29:58 -07:00 • committed by GitHub
parent 292a22bdc2
commit 61c7249759
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GPG key ID: 4AEE18F83AFDEB23
16 changed files with 409 additions and 109 deletions
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109
Python/generated_cases.c.h generated
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@ -8,6 +8,7 @@
}
TARGET(RESUME) {
#if TIER_ONE
assert(frame == tstate->current_frame);
/* Possibly combine this with eval breaker */
if (_PyFrame_GetCode(frame)->_co_instrumentation_version != tstate->interp->monitoring_version) {
@ -15,7 +16,9 @@
if (err) goto error;
next_instr--;
}
else if (oparg < 2) {
else
#endif
if (oparg < 2) {
CHECK_EVAL_BREAKER();
}
DISPATCH();
@ -970,20 +973,40 @@
TARGET(RETURN_VALUE) {
PyObject *retval;
// SAVE_CURRENT_IP
{
#if TIER_ONE
frame->prev_instr = next_instr - 1;
#endif
#if TIER_TWO
// Relies on a preceding SAVE_IP
frame->prev_instr--;
#endif
}
// _POP_FRAME
retval = stack_pointer[-1];
STACK_SHRINK(1);
assert(EMPTY());
_PyFrame_SetStackPointer(frame, stack_pointer);
_Py_LeaveRecursiveCallPy(tstate);
assert(frame != &entry_frame);
// GH-99729: We need to unlink the frame *before* clearing it:
_PyInterpreterFrame *dying = frame;
frame = tstate->current_frame = dying->previous;
_PyEvalFrameClearAndPop(tstate, dying);
frame->prev_instr += frame->return_offset;
_PyFrame_StackPush(frame, retval);
goto resume_frame;
STACK_SHRINK(1);
{
assert(EMPTY());
_PyFrame_SetStackPointer(frame, stack_pointer);
_Py_LeaveRecursiveCallPy(tstate);
// GH-99729: We need to unlink the frame *before* clearing it:
_PyInterpreterFrame *dying = frame;
#if TIER_ONE
assert(frame != &entry_frame);
#endif
frame = tstate->current_frame = dying->previous;
_PyEval_FrameClearAndPop(tstate, dying);
frame->prev_instr += frame->return_offset;
_PyFrame_StackPush(frame, retval);
#if TIER_ONE
goto resume_frame;
#endif
#if TIER_TWO
stack_pointer = _PyFrame_GetStackPointer(frame);
ip_offset = (_Py_CODEUNIT *)_PyFrame_GetCode(frame)->co_code_adaptive;
#endif
}
}
TARGET(INSTRUMENTED_RETURN_VALUE) {
@ -1001,7 +1024,7 @@
// GH-99729: We need to unlink the frame *before* clearing it:
_PyInterpreterFrame *dying = frame;
frame = tstate->current_frame = dying->previous;
_PyEvalFrameClearAndPop(tstate, dying);
_PyEval_FrameClearAndPop(tstate, dying);
frame->prev_instr += frame->return_offset;
_PyFrame_StackPush(frame, retval);
goto resume_frame;
@ -1009,19 +1032,46 @@
}
TARGET(RETURN_CONST) {
PyObject *retval = GETITEM(FRAME_CO_CONSTS, oparg);
Py_INCREF(retval);
assert(EMPTY());
_PyFrame_SetStackPointer(frame, stack_pointer);
_Py_LeaveRecursiveCallPy(tstate);
assert(frame != &entry_frame);
// GH-99729: We need to unlink the frame *before* clearing it:
_PyInterpreterFrame *dying = frame;
frame = tstate->current_frame = dying->previous;
_PyEvalFrameClearAndPop(tstate, dying);
frame->prev_instr += frame->return_offset;
_PyFrame_StackPush(frame, retval);
goto resume_frame;
PyObject *value;
PyObject *retval;
// LOAD_CONST
{
value = GETITEM(FRAME_CO_CONSTS, oparg);
Py_INCREF(value);
}
// SAVE_CURRENT_IP
{
#if TIER_ONE
frame->prev_instr = next_instr - 1;
#endif
#if TIER_TWO
// Relies on a preceding SAVE_IP
frame->prev_instr--;
#endif
}
// _POP_FRAME
retval = value;
{
assert(EMPTY());
_PyFrame_SetStackPointer(frame, stack_pointer);
_Py_LeaveRecursiveCallPy(tstate);
// GH-99729: We need to unlink the frame *before* clearing it:
_PyInterpreterFrame *dying = frame;
#if TIER_ONE
assert(frame != &entry_frame);
#endif
frame = tstate->current_frame = dying->previous;
_PyEval_FrameClearAndPop(tstate, dying);
frame->prev_instr += frame->return_offset;
_PyFrame_StackPush(frame, retval);
#if TIER_ONE
goto resume_frame;
#endif
#if TIER_TWO
stack_pointer = _PyFrame_GetStackPointer(frame);
ip_offset = (_Py_CODEUNIT *)_PyFrame_GetCode(frame)->co_code_adaptive;
#endif
}
}
TARGET(INSTRUMENTED_RETURN_CONST) {
@ -1038,7 +1088,7 @@
// GH-99729: We need to unlink the frame *before* clearing it:
_PyInterpreterFrame *dying = frame;
frame = tstate->current_frame = dying->previous;
_PyEvalFrameClearAndPop(tstate, dying);
_PyEval_FrameClearAndPop(tstate, dying);
frame->prev_instr += frame->return_offset;
_PyFrame_StackPush(frame, retval);
goto resume_frame;
@ -4575,7 +4625,8 @@
goto error;
}
func_obj->func_version = ((PyCodeObject *)codeobj)->co_version;
_PyFunction_SetVersion(
func_obj, ((PyCodeObject *)codeobj)->co_version);
func = (PyObject *)func_obj;
stack_pointer[-1] = func;
DISPATCH();