… input (python#100205)The presence of this macro indicates that a particular instructionmay be considered for conversion to a register-based format(seefaster-cpython/ideas#485).An invariant (currently unchecked) is that `DEOPT_IF()` may onlyoccur *before* `DECREF_INPUTS()`, and `ERROR_IF()` may only occur*after* it. One reason not to check this is that there are a fewplaces where we insert *two* `DECREF_INPUTS()` calls, in differentbranches of the code. The invariant checking would have to be ableto do some flow control analysis to understand this.Note that many instructions, especially specialized ones,can't be converted to use this macro straightforwardly.This is because the generator currently only generates plain`Py_DECREF(variable)` statements, and cannot generatethings like `_Py_DECREF_SPECIALIZED()` let alone deal with`_PyList_AppendTakeRef()`.

* origin/main: (1306 commits)  CorrectCVE-2020-10735 documentation (python#100306)pythongh-100272: Fix JSON serialization of OrderedDict (pythonGH-100273)pythongh-93649: Split tracemalloc tests from _testcapimodule.c (python#99551)  Docs: Use `PY_VERSION_HEX` for version comparison (python#100179)pythongh-97909: Fix markup for `PyMethodDef` members (python#100089)pythongh-99240: Reset pointer to NULL when the pointed memory is freed in argument parsing (python#99890)pythongh-99240: Reset pointer to NULL when the pointed memory is freed in argument parsing (python#99890)pythonGH-98831: Add DECREF_INPUTS(), expanding to DECREF() each stack input (python#100205)pythongh-78707: deprecate passing >1 argument to `PurePath.[is_]relative_to()` (pythonGH-94469)pythongh-99540: Constant hash for _PyNone_Type to aid reproducibility (pythonGH-99541)pythongh-100039: enhance __signature__ to work with str and callables (pythonGH-100168)pythongh-99830: asyncio: Document returns of remove_{reader,writer} (python#100302)  "Compound statement" docs: Fix with-statement step indexing (python#100286)pythonGH-90043: Handle NaNs in COMPARE_OP_FLOAT_JUMP (pythonGH-100278)  Improve stats presentation for calls. (pythonGH-100274)  Better stats for `LOAD_ATTR` and `STORE_ATTR` (pythonGH-100295)pythongh-81057: Move the Cached Parser Dummy Name to _PyRuntimeState (python#100277)  Document that zipfile's pwd parameter is a `bytes` object (python#100209)pythongh-99767: mark `PyTypeObject.tp_watched` as internal use only in table (python#100271)  Fix typo in introduction.rst (python#100266)  ...

* main:pythongh-89727: Fix os.walk RecursionError on deep trees (python#99803)  Docs: Don't upload CI artifacts (python#100330)pythongh-94912: Added marker for non-standard coroutine function detection (python#99247)  CorrectCVE-2020-10735 documentation (python#100306)pythongh-100272: Fix JSON serialization of OrderedDict (pythonGH-100273)pythongh-93649: Split tracemalloc tests from _testcapimodule.c (python#99551)  Docs: Use `PY_VERSION_HEX` for version comparison (python#100179)pythongh-97909: Fix markup for `PyMethodDef` members (python#100089)pythongh-99240: Reset pointer to NULL when the pointed memory is freed in argument parsing (python#99890)pythongh-99240: Reset pointer to NULL when the pointed memory is freed in argument parsing (python#99890)pythonGH-98831: Add DECREF_INPUTS(), expanding to DECREF() each stack input (python#100205)pythongh-78707: deprecate passing >1 argument to `PurePath.[is_]relative_to()` (pythonGH-94469)