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GH-111848: Set the IP when de-optimizing (GH-112065)

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* Replace jumps with deopts in tier 2

* Fewer special cases of uop names

* Add target field to uop IR

* Remove more redundant SET_IP and _CHECK_VALIDITY micro-ops

* Extend whitelist of non-escaping API functions.
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Mark Shannon 2023-11-15 15:48:58 +00:00 • committed by GitHub
parent 0cfdd6e3d1
commit 4bbb367ba6
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6 changed files with 118 additions and 98 deletions
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2
Python/ceval.c
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@ -1067,6 +1067,7 @@ deoptimize:
UOP_STAT_INC(opcode, miss);
frame->return_offset = 0; // Dispatch to frame->instr_ptr
_PyFrame_SetStackPointer(frame, stack_pointer);
frame->instr_ptr = next_uop[-1].target + _PyCode_CODE((PyCodeObject *)frame->f_executable);
Py_DECREF(current_executor);
// Fall through
// Jump here from ENTER_EXECUTOR
@ -1077,6 +1078,7 @@ enter_tier_one:
// Jump here from _EXIT_TRACE
exit_trace:
_PyFrame_SetStackPointer(frame, stack_pointer);
frame->instr_ptr = next_uop[-1].target + _PyCode_CODE((PyCodeObject *)frame->f_executable);
Py_DECREF(current_executor);
OPT_HIST(trace_uop_execution_counter, trace_run_length_hist);
goto enter_tier_one;