8000 GH-118093: Better handling of short and mid-loop traces by brandtbucher · Pull Request #122252 · python/cpython · GitHub
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GH-118093: Better handling of short and mid-loop traces #122252

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Merged
merged 10 commits into from
Jul 29, 2024
Merged

GH-118093: Better handling of short and mid-loop traces #122252

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f8637ce
Allow one backward jump per trace, anywhere
brandtbucher Jul 17, 2024
f1f5d13
Use progress, rather than trace length, to reject traces
brandtbucher Jul 17, 2024
159e46b
Add missing RESERVEs
brandtbucher Jul 25, 2024
511ec09
Clean up overflow recovery
brandtbucher Jul 25, 2024
ba3d68b
Add asserts back and teach is_resume about ENTER_EXECUTOR
brandtbucher Jul 26, 2024
7c404a8
Guard _Py_GetExecutor on non-tier-two builds
brandtbucher Jul 26, 2024
1606abd
Revert "Guard _Py_GetExecutor on non-tier-two builds"
brandtbucher Jul 29, 2024
6901f60
Revert "Add asserts back and teach is_resume about ENTER_EXECUTOR"
brandtbucher Jul 29, 2024
9bcc643
Add comment to removed asserts
brandtbucher Jul 29, 2024
cd1f4d2
Catch up with main
brandtbucher Jul 29, 2024
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Revert "Guard _Py_GetExecutor on non-tier-two builds" 
This reverts commit 7c404a8.
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@brandtbucher
brandtbucher committed Jul 29, 2024
commit 1606abd27b05b558de8344f4a8d2f46c2d24091a
2 changes: 0 additions & 2 deletions Objects/genobject.c
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Original file line number Diff line number Diff line change
Expand Up @@ -334,14 +334,12 @@ is_resume(_PyInterpreterFrame *frame, uint8_t *oparg_p)
int offset = frame->instr_ptr - _PyCode_CODE(code);
uint8_t opcode = _Py_GetBaseOpcode(code, offset);
uint8_t oparg = frame->instr_ptr->op.arg;
#ifdef _Py_TIER2
if (opcode == ENTER_EXECUTOR) {
_PyExecutorObject *executor = _Py_GetExecutor(code, sizeof(_Py_CODEUNIT) * offset);
opcode = _PyOpcode_Deopt[executor->vm_data.opcode];
oparg = executor->vm_data.oparg;
Py_DECREF(executor);
}
#endif
if (opcode == RESUME) {
*oparg_p = oparg;
return true;
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