* origin/main: (1306 commits)
Correct
CVE-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)
...
The presence of this macro indicates that a particular instruction may be considered for conversion to a register-based format (see faster-cpython/ideas#485).
An invariant (currently unchecked) is that DEOPT_IF() may only occur before DECREF_INPUTS(), and ERROR_IF() may only occur after it. One reason not to check this is that there are a few places where we insert two DECREF_INPUTS() calls, in different branches of the code. The invariant checking would have to be able to 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 generate things like _Py_DECREF_SPECIALIZED() let alone deal with _PyList_AppendTakeRef().