Generate the interpreter #98831

gvanrossum · 2022-10-28T22:18:49Z

Overview

Over in faster-cpython/ideas we've been exploring the idea of generating the interpreter from a set of instruction definitions. This will eventually enable having multiple versions of the interpreter (e.g. with and without tracing enabled), and it will allow us to automatically combine instructions using a powerful notation (e.g. super(LOAD_FAST__LOAD_FAST) = LOAD_FAST + LOAD_FAST;). It will also let us auto-generate things like stack_effect().

We are planning to land at least an early version of this work in 3.12. We have a tentative grammar for instruction definition DSL -- which will undoubtedly undergo several iterations before we've settled. We have a first draft of the tooling ~~ready for review (which currently reproduces the status quo)~~ done.

Once the first version of the tooling has landed we expect to iterate quickly, using this issue an umbrella issue for our PRs to link to.

References

PR: GH-98831: "Generate" the interpreter #98830

PR: GH-98831: Remove redundant extract_cases.py script #99065

PR: GH-98831: Implement super-instruction generation #99084

PR: GH-98831: Add some macros definitions to bytecodes.c to reduce IDE warnings. #99093

PR: GH-98831: Auto-generate PREDICTED() macro calls #99102

PR: GH-98831: Add regen-cases to regen-all #99107

PR: GH-98831: Simple input-output stack effects #99120

PR: GH-98831: Remove all remaining DISPATCH() calls from bytecodes.c #99271

PR: GH-98831: Implement basic cache effects #99313

PR: GH-98831: Refactor generate_cases.py #99408

PR: GH-98831: Add macro and op and their implementation to DSL #99495

PR: GH-98831: Refactor and fix cases generator #99526

PR: GH-98831: Support cache effects in super- and macro instructions #99601

PR: GH-98831: Typed stack effects, and more instructions converted #99764

PR: GH-98831: Get rid of super(), just use macro() #100095

PR: GH-98831: Generate things in the input order #100123

PR: GH-98831: Remove super-instruction definitions, use macro instructions instead #100124

PR: GH-98831: Add DECREF_INPUTS(), expanding to DECREF() each stack input #100205

PR: GH-98831: Modernize a ton of simpler instructions #100545

PR: GH-98831: Add some tests for generate_cases.py #100763

PR: GH-98831: Update generate_cases.py: register inst, opcode_metadata.h #100735

PR: GH-98831: Revert "GH-98831: Update generate_cases.py: register inst, opcode_metadata.h (#100735)" #100777

PR: gh-98831: Regenerate Python/opcode_metadata.h #100778

PR: GH-98831: Refactor instr format code and change to enum #100895

PR: GH-98831: Implement array support in cases generator #100912

PR: GH-98831: Identify instructions that don't use oparg #100957

PR: GH-98831: Move assorted macros from ceval.h to a new header #101116

PR: gh-98831: register instructions have 0 pushes and pops #101163

PR: gh-98831: rewrite CHECK_EG_MATCH opcode in the instruction definition DSL #101269

PR: gh-98831: rewrite pattern matching opcodes in the instruction definition DSL #101287

PR: GH-98831: Elaborate some cases_generator tests #101299

PR: gh-98831: rewrite RAISE_VARARGS in the instruction definition DSL #101306

PR: gh-98831: add variable stack effect support to cases generator #101309

PR: gh-98831: Support conditional effects; use for LOAD_ATTR #101333

PR: gh-98831: Fix two bugs in case generator #101349

PR: gh-98831: Clean up and add cache size static_assert to macro #101442

PR: gh-98831: rewrite GET_LEN, GET_ITER, BEFORE_WITH and a few simple opcodes in the instruction definition DSL #101443

PR: gh-98831: rewrite BEFORE_ASYNC_WITH and END_ASYNC_FOR in the instruction definition DSL #101458

PR: gh-98831: rewrite PUSH_EXC_INFO and conditional jumps in the instruction definition DSL #101481

PR: gh-98831: Modernize the LOAD_ATTR family #101488

PR: gh-98831: Modernize the LOAD_GLOBAL family #101502

PR: gh-98831: rewrite RERAISE and CLEANUP_THROW in the instruction definition DSL #101511

PR: gh-98831: Modernize CALL and family #101508

PR: gh-98831: rewrite SEND, GET_YIELD_FROM_ITER, RETURN_GENERATOR in the instruction definition DSL #101516

PR: gh-98831: rewrite MAKE_FUNCTION and BUILD_SLICE in the instruction definition DSL #101529

PR: gh-98831: rewrite COPY and SWAP in the instruction definition DSL #101620

PR: gh-98831: Modernize the FOR_ITER family of instructions #101626

PR: gh-98831: Modernize CALL_FUNCTION_EX #101627

PR: gh-98831: Modernize FORMAT_VALUE #101628

PR: gh-98831: Move DSL documentation here from ideas repo #101629

PR: gh-98831: rewrite UNPACK_EX, UNPACK_SEQUENCE, UNPACK_SEQUENCE_TWO_TUPLE in the instruction definition DSL #101641

PR: gh-98831: Finish the UNPACK_SEQUENCE family #101666

PR: gh-98831: Use opcode metadata for stack_effect() #101704

PR: gh-98831: Use DECREF_INPUTS() more #102409

The text was updated successfully, but these errors were encountered:

The switch cases (really TARGET(opcode) macros) have been moved from ceval.c to generated_cases.c.h. That file is generated from instruction definitions in bytecodes.c (which impersonates a C file so the C code it contains can be edited without custom support in e.g. VS Code). The code generator lives in Tools/cases_generator (it has a README.md explaining how it works). The DSL used to describe the instructions is a work in progress, described in https://github.com/faster-cpython/ideas/blob/main/3.12/interpreter_definition.md. This is surely a work-in-progress. An easy next step could be auto-generating super-instructions. **IMPORTANT: Merge Conflicts** If you get a merge conflict for instruction implementations in ceval.c, your best bet is to port your changes to bytecodes.c. That file looks almost the same as the original cases, except instead of `TARGET(NAME)` it uses `inst(NAME)`, and the trailing `DISPATCH()` call is omitted (the code generator adds it automatically).

Debt I owe from PR GH-98830.

Co-authored-by: Brandt Bucher <[email protected]>

…rnings. (#99093)

Co-authored-by: C.A.M. Gerlach <[email protected]>

) Also mark those opcodes that have no stack effect as such. Co-authored-by: Brandt Bucher <[email protected]>

python#99271) Also mark those opcodes that have no stack effect as such. Co-authored-by: Brandt Bucher <[email protected]>

Also complete cache effects for BINARY_SUBSCR family.

Newly supported interpreter definition syntax: - `op(NAME, (input_stack_effects -- output_stack_effects)) { ... }` - `macro(NAME) = OP1 + OP2;` Also some other random improvements: - Convert `WITH_EXCEPT_START` to use stack effects - Fix lexer to balk at unrecognized characters, e.g. `@` - Fix moved output names; support object pointers in cache - Introduce `error()` method to print errors - Introduce read_uint16(p) as equivalent to `*p` Co-authored-by: Brandt Bucher <[email protected]>

)

Stack effects can now have a type, e.g. `inst(X, (left, right -- jump/uint64_t)) { ... }`. Instructions converted to the non-legacy format: * COMPARE_OP * COMPARE_OP_FLOAT_JUMP * COMPARE_OP_INT_JUMP * COMPARE_OP_STR_JUMP * STORE_ATTR * DELETE_ATTR * STORE_GLOBAL * STORE_ATTR_INSTANCE_VALUE * STORE_ATTR_WITH_HINT * STORE_ATTR_SLOT, and complete the store_attr family * Complete the store_subscr family: STORE_SUBSCR{,DICT,LIST_INT} (STORE_SUBSCR was alread half converted, but wasn't using cache effects yet.) * DELETE_SUBSCR * PRINT_EXPR * INTERPRETER_EXIT (a bit weird, ends in return) * RETURN_VALUE * GET_AITER (had to restructure it some) The original had mysterious `SET_TOP(NULL)` before `goto error`. I assume those just account for `obj` having been decref'ed, so I got rid of them in favor of the cleanup implied by `ERROR_IF()`. * LIST_APPEND (a bit unhappy with it) * SET_ADD (also a bit unhappy with it) Various other improvements/refactorings as well.

This makes it easier to see what changed in the generated code when converting an instruction to super or macro.

…#100205) 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()`.

… input (python#100205) 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()`.

* 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) ...

* 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) 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)

…le opcodes in the instruction definition DSL (python#101443)

…ion definition DSL (#101458)

* main: pythongh-101440: fix json snippet error in logging-cookbook.rst (python#101439) pythongh-99276 - Updated Doc/faq/general.rst (python#101396) Add JOBS parameter to docs Makefile (python#101395) pythongh-98831: rewrite GET_LEN, GET_ITER, BEFORE_WITH and a few simple opcodes in the instruction definition DSL (python#101443) pythongh-77607: Improve accuracy of os.path.join docs (python#101406) Fixes typo in asyncio.TaskGroup context manager code example (python#101449) pythongh-98831: Clean up and add cache size static_assert to macro (python#101442) pythongh-99955: use SUCCESS/ERROR return values in optimizer and assembler. Use RETURN_IF_ERROR where appropriate. Fix a couple of bugs. (python#101412)

* main: pythonGH-100288: Skip extra work when failing to specialize LOAD_ATTR (pythonGH-101354) pythongh-101409: Improve generated clinic code for self type checks (python#101411) pythongh-98831: rewrite BEFORE_ASYNC_WITH and END_ASYNC_FOR in the instruction definition DSL (python#101458) pythongh-101469: Optimise get_io_state() by using _PyModule_GetState() (pythonGH-101470)

…ion definition DSL (#101481)

* main: pythongh-98831: rewrite PUSH_EXC_INFO and conditional jumps in the instruction definition DSL (python#101481) pythongh-98831: Modernize the LOAD_ATTR family (python#101488) pythongh-101498 : Fix asyncio.Timeout example in docs (python#101499) pythongh-101454: fix documentation for END_ASYNC_FOR (python#101455) pythongh-101277: Isolate itertools, add group and _grouper types to module state (python#101302) pythongh-101317: Add `ssl_shutdown_timeout` parameter for `asyncio.StreamWriter.start_tls` (python#101335) datetime.rst: fix combine() signature (python#101490)

…tion DSL (#101511)

…instruction definition DSL (#101516)

…n the instruction definition DSL (python#101516)

…finition DSL (#101529)

…01620)

Co-authored-by: Irit Katriel <[email protected]>

…LE in the instruction definition DSL (#101641)

gvanrossum · 2023-02-07T22:33:03Z

Once these PRs land, every opcode has cache/stack effect specifications, and I will disable the legacy syntax from the parser.

gh-98831: Modernize CALL and family #101508 CALL family
gh-98831: Modernize CALL_FUNCTION_EX #101627 CALL_FUNCTION_EX
gh-98831: Modernize FORMAT_VALUE #101628 FORMAT_VALUE
gh-98831: Finish the UNPACK_SEQUENCE family #101666 UNPACK_SEQUENCE family

New generator feature: Generate useful glue for output arrays, so you can just write values to the output array (no bounds checking). Rewrote UNPACK_SEQUENCE_TWO_TUPLE to use this, and also UNPACK_SEQUENCE_{TUPLE,LIST}.

Generator update: support balanced parentheses and brackets in conditions and size expressions.

New generator feature: Move CHECK_EVAL_BREAKER() call to just before DISPATCH().

Includes a slight improvement to `DECREF_INPUTS()`.

* Write output and metadata in a single run This halves the time to run the cases generator (most of the time goes into parsing the input). * Declare or define opcode metadata based on NEED_OPCODE_TABLES * Use generated metadata for stack_effect() * compile.o depends on opcode_metadata.h * Return -1 from _PyOpcode_num_popped/pushed for unknown opcode

* main: (82 commits) pythongh-101670: typo fix in PyImport_ExtendInittab() (python#101723) pythonGH-99293: Document that `Py_TPFLAGS_VALID_VERSION_TAG` shouldn't be used. (#pythonGH-101736) no-issue: Add Dong-hee Na as the cjkcodecs codeowner (pythongh-101731) pythongh-101678: Merge math_1_to_whatever() and math_1() (python#101730) pythongh-101678: refactor the math module to use special functions from c11 (pythonGH-101679) pythongh-85984: Remove legacy Lib/pty.py code. (python#92365) pythongh-98831: Use opcode metadata for stack_effect() (python#101704) pythongh-101283: Version was just released, so should be changed in 3.11.3 (pythonGH-101719) pythongh-101283: Fix use of unbound variable (pythonGH-101712) pythongh-101283: Improved fallback logic for subprocess with shell=True on Windows (pythonGH-101286) pythongh-101277: Port more itertools static types to heap types (python#101304) pythongh-98831: Modernize CALL and family (python#101508) pythonGH-101696: invalidate type version tag in `_PyStaticType_Dealloc` (python#101697) pythongh-100221: Fix creating dirs in `make sharedinstall` (pythonGH-100329) pythongh-101670: typo fix in PyImport_AppendInittab() (pythonGH-101672) pythongh-101196: Make isdir/isfile/exists faster on Windows (pythonGH-101324) pythongh-101614: Don't treat python3_d.dll as a Python DLL when checking extension modules for incompatibility (pythonGH-101615) pythongh-100933: Improve `check_element` helper in `test_xml_etree` (python#100934) pythonGH-101578: Normalize the current exception (pythonGH-101607) pythongh-47937: Note that Popen attributes are read-only (python#93070) ...

* main: (50 commits) pythongh-102674: Remove _specialization_stats from Lib/opcode.py (python#102685) pythongh-102660: Handle m_copy Specially for the sys and builtins Modules (pythongh-102661) pythongh-102354: change python3 to python in docs examples (python#102696) pythongh-81057: Add a CI Check for New Unsupported C Global Variables (pythongh-102506) pythonGH-94851: check unicode consistency of static strings in debug mode (python#102684) pythongh-100315: clarification to `__slots__` docs. (python#102621) pythonGH-100227: cleanup initialization of global interned dict (python#102682) doc: Remove a duplicate 'versionchanged' in library/asyncio-task (pythongh-102677) pythongh-102013: Add PyUnstable_GC_VisitObjects (python#102014) pythonGH-102670: Use sumprod() to simplify, speed up, and improve accuracy of statistics functions (pythonGH-102649) pythongh-102627: Replace address pointing toward malicious web page (python#102630) pythongh-98831: Use DECREF_INPUTS() more (python#102409) pythongh-101659: Avoid Allocation for Shared Exceptions in the _xxsubinterpreters Module (pythongh-102659) pythongh-101524: Fix the ChannelID tp_name (pythongh-102655) pythongh-102069: Fix `__weakref__` descriptor generation for custom dataclasses (python#102075) pythongh-98169 dataclasses.astuple support DefaultDict (python#98170) pythongh-102650: Remove duplicate include directives from multiple source files (python#102651) pythonGH-100987: Don't cache references to the names and consts array in `_PyEval_EvalFrameDefault`. (python#102640) pythongh-87092: refactor assemble() to a number of separate functions, which do not need the compiler struct (python#102562) pythongh-102192: Replace PyErr_Fetch/Restore etc by more efficient alternatives (python#102631) ...

gvanrossum · 2023-03-15T03:15:34Z

Let's close this issue, the interpreter is now definitely being generated. Subsequent changes may reference this (if small) or have their own issue.

gvanrossum added the type-feature A feature request or enhancement label Oct 28, 2022

kumaraditya303 added interpreter-core (Objects, Python, Grammar, and Parser dirs) 3.12 only security fixes labels Oct 29, 2022

gvanrossum moved this to Todo in Fancy CPython Board Oct 31, 2022

gvanrossum added this to Fancy CPython Board Oct 31, 2022

gvanrossum self-assigned this Oct 31, 2022

gvanrossum changed the title ~~Generating the interpreter~~ Generate the interpreter Oct 31, 2022

qexat mentioned this issue Oct 31, 2022

[generate-ceval-switch] GH-98831: "Generate" the interpreter (GH-98830) gvanrossum/cpython#65

Closed

gvanrossum added a commit that referenced this issue Nov 3, 2022

GH-98831: Remove redundant extract_cases.py script (GH-99065)

916af11

Debt I owe from PR GH-98830.

gvanrossum pushed a commit that referenced this issue Nov 4, 2022

GH-98831: Add regen-cases to regen-all (#99107)

e99380c

gvanrossum added a commit that referenced this issue Nov 4, 2022

GH-98831: Auto-generate PREDICTED() macro calls (#99102)

c885623

Co-authored-by: Brandt Bucher <[email protected]>

gvanrossum mentioned this issue Nov 4, 2022

GH-99104: Update headers for bytecodes.c and generate_cases.py #99112

Merged

gvanrossum pushed a commit that referenced this issue Nov 4, 2022

GH-98831: Add some macros definitions to bytecodes.c to reduce IDE wa…

7a020b8

…rnings. (#99093)

gvanrossum added a commit that referenced this issue Nov 6, 2022

GH-98831: Implement super-instruction generation (#99084)

7dcd28e

Co-authored-by: C.A.M. Gerlach <[email protected]>

gvanrossum added a commit that referenced this issue Nov 8, 2022

GH-98831: Simple input-output stack effects for bytecodes.c (#99120)

f1a6546

gvanrossum added a commit that referenced this issue Nov 10, 2022

GH-98831: Remove all remaining DISPATCH() calls from bytecodes.c (#99271

694cdb2

) Also mark those opcodes that have no stack effect as such. Co-authored-by: Brandt Bucher <[email protected]>

gvanrossum added a commit to gvanrossum/cpython that referenced this issue Nov 10, 2022

pythonGH-98831: Remove all remaining DISPATCH() calls from bytecodes.c (

d094e42

python#99271) Also mark those opcodes that have no stack effect as such. Co-authored-by: Brandt Bucher <[email protected]>

gvanrossum added a commit that referenced this issue Nov 16, 2022

GH-98831: Implement basic cache effects (#99313)

e37744f

gvanrossum added a commit that referenced this issue Nov 18, 2022

GH-98831: Refactor and fix cases generator (#99526)

4f5e1cb

Also complete cache effects for BINARY_SUBSCR family.

gvanrossum added a commit that referenced this issue Dec 3, 2022

GH-98831: Support cache effects in super- and macro instructions (#99601

acf9184

)

gvanrossum added a commit that referenced this issue Dec 8, 2022

GH-98831: Generate things in the input order (#100123)

1cfa704

This makes it easier to see what changed in the generated code when converting an instruction to super or macro.

gvanrossum mentioned this issue Dec 17, 2022

Enhance generator for register instructions iritkatriel/cpython#48

Merged

mdboom pushed a commit to mdboom/cpython that referenced this issue Jan 31, 2023

pythongh-98831: rewrite GET_LEN, GET_ITER, BEFORE_WITH and a few simp…

cc9952d

…le opcodes in the instruction definition DSL (python#101443)

iritkatriel added a commit that referenced this issue Jan 31, 2023

gh-98831: rewrite BEFORE_ASYNC_WITH and END_ASYNC_FOR in the instruct…

0062f53

…ion definition DSL (#101458)

gvanrossum added a commit that referenced this issue Feb 1, 2023

gh-98831: Modernize the LOAD_ATTR family (#101488)

7840ff3

iritkatriel added a commit that referenced this issue Feb 1, 2023

gh-98831: rewrite PUSH_EXC_INFO and conditional jumps in the instruct…

b91b42d

…ion definition DSL (#101481)

gvanrossum added a commit that referenced this issue Feb 1, 2023

gh-98831: Modernize the LOAD_GLOBAL family (#101502)

ae9b38f

iritkatriel added a commit that referenced this issue Feb 2, 2023

gh-98831: rewrite RERAISE and CLEANUP_THROW in the instruction defini…

0675b8f

…tion DSL (#101511)

iritkatriel added a commit that referenced this issue Feb 3, 2023

gh-98831: rewrite SEND, GET_YIELD_FROM_ITER, RETURN_GENERATOR in the …

04e06e2

…instruction definition DSL (#101516)

iritkatriel added a commit to iritkatriel/cpython that referenced this issue Feb 3, 2023

pythongh-98831: rewrite SEND, GET_YIELD_FROM_ITER, RETURN_GENERATOR i…

77af074

…n the instruction definition DSL (python#101516)

iritkatriel added a commit that referenced this issue Feb 3, 2023

gh-98831: rewrite MAKE_FUNCTION and BUILD_SLICE in the instruction de…

433fb3e

…finition DSL (#101529)

iritkatriel added a commit that referenced this issue Feb 6, 2023

gh-98831: rewrite COPY and SWAP in the instruction definition DSL (#1…

3875276

…01620)

gvanrossum added a commit that referenced this issue Feb 7, 2023

gh-98831: Move DSL documentation here from ideas repo (#101629)

694e346

gvanrossum added a commit that referenced this issue Feb 7, 2023

gh-98831: Modernize the FOR_ITER family of instructions (#101626)

d54b8d8

Co-authored-by: Irit Katriel <[email protected]>

iritkatriel added a commit that referenced this issue Feb 7, 2023

gh-98831: rewrite UNPACK_EX, UNPACK_SEQUENCE, UNPACK_SEQUENCE_TWO_TUP…

dec1ab0

…LE in the instruction definition DSL (#101641)

gvanrossum added a commit that referenced this issue Feb 8, 2023

gh-98831: Modernize FORMAT_VALUE (#101628)

b2b85b5

Generator update: support balanced parentheses and brackets in conditions and size expressions.

gvanrossum added a commit that referenced this issue Feb 8, 2023

gh-98831: Modernize CALL_FUNCTION_EX (#101627)

a9f0144

New generator feature: Move CHECK_EVAL_BREAKER() call to just before DISPATCH().

gvanrossum added a commit that referenced this issue Feb 8, 2023

gh-98831: Modernize CALL and family (#101508)

616aec1

Includes a slight improvement to `DECREF_INPUTS()`.

gvanrossum added a commit that referenced this issue Mar 13, 2023

gh-98831: Use DECREF_INPUTS() more (#102409)

392f2ad

gvanrossum closed this as completed Mar 15, 2023

github-project-automation bot moved this from Todo to Done in Fancy CPython Board Mar 15, 2023

Fidget-Spinner pushed a commit to Fidget-Spinner/cpython that referenced this issue Mar 27, 2023

pythongh-98831: Use DECREF_INPUTS() more (python#102409)

b99132d

warsaw pushed a commit to warsaw/cpython that referenced this issue Apr 11, 2023

pythongh-98831: Use DECREF_INPUTS() more (python#102409)

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