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* bpo-46528: Check PyMem_Malloc for NULL (GH-30998)Brandt Bucher2022-02-091-8/+15
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* bpo-46541: Replace core use of _Py_IDENTIFIER() with statically initialized ↵Eric Snow2022-02-081-86/+20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | global objects. (gh-30928) We're no longer using _Py_IDENTIFIER() (or _Py_static_string()) in any core CPython code. It is still used in a number of non-builtin stdlib modules. The replacement is: PyUnicodeObject (not pointer) fields under _PyRuntimeState, statically initialized as part of _PyRuntime. A new _Py_GET_GLOBAL_IDENTIFIER() macro facilitates lookup of the fields (along with _Py_GET_GLOBAL_STRING() for non-identifier strings). https://bugs.python.org/issue46541#msg411799 explains the rationale for this change. The core of the change is in: * (new) Include/internal/pycore_global_strings.h - the declarations for the global strings, along with the macros * Include/internal/pycore_runtime_init.h - added the static initializers for the global strings * Include/internal/pycore_global_objects.h - where the struct in pycore_global_strings.h is hooked into _PyRuntimeState * Tools/scripts/generate_global_objects.py - added generation of the global string declarations and static initializers I've also added a --check flag to generate_global_objects.py (along with make check-global-objects) to check for unused global strings. That check is added to the PR CI config. The remainder of this change updates the core code to use _Py_GET_GLOBAL_IDENTIFIER() instead of _Py_IDENTIFIER() and the related _Py*Id functions (likewise for _Py_GET_GLOBAL_STRING() instead of _Py_static_string()). This includes adding a few functions where there wasn't already an alternative to _Py*Id(), replacing the _Py_Identifier * parameter with PyObject *. The following are not changed (yet): * stop using _Py_IDENTIFIER() in the stdlib modules * (maybe) get rid of _Py_IDENTIFIER(), etc. entirely -- this may not be doable as at least one package on PyPI using this (private) API * (maybe) intern the strings during runtime init https://bugs.python.org/issue46541
* bpo-46670: Remove unused macros in the Python directory (GH-31192)Victor Stinner2022-02-071-13/+0
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* bpo-45773: Remove invalid peephole optimizations (GH-31066)Brandt Bucher2022-02-031-2/+0
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* bpo-46528: Simplify BUILD_TUPLE/UNPACK_SEQUENCE folding (GH-31039)Brandt Bucher2022-02-011-14/+7
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* bpo-46329: Split calls into precall and call instructions. (GH-30855)Mark Shannon2022-01-281-26/+39
| | | | | | | | | | | | | | * Add PRECALL_FUNCTION opcode. * Move 'call shape' varaibles into struct. * Replace CALL_NO_KW and CALL_KW with KW_NAMES and CALL instructions. * Specialize for builtin methods taking using the METH_FASTCALL | METH_KEYWORDS protocol. * Allow kwnames for specialized calls to builtin types. * Specialize calls to tuple(arg) and str(arg).
* bpo-46458: emit code for else of a try block immediately after the try body ↵Irit Katriel2022-01-271-6/+7
| | | | (GH-30751)
* bpo-46528: Simplify the VM's stack manipulations (GH-30902)Brandt Bucher2022-01-261-105/+161
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* bpo-43683: Streamline YIELD_VALUE and SEND (GH-30723)Mark Shannon2022-01-241-6/+19
| | | | | | | | * Split YIELD_VALUE into ASYNC_GEN_WRAP; YIELD_VALUE for async generators. * Split SEND into SEND; YIELD_VALUE. * Document new opcodes.
* bpo-46409: Make generators in bytecode (GH-30633)Mark Shannon2022-01-201-20/+36
| | | | | | | | | | | | * Add RETURN_GENERATOR and JUMP_NO_INTERRUPT opcodes. * Trim frame and generator by word each. * Minor refactor of frame.c * Update test.test_sys to account for smaller frames. * Treat generator functions as normal functions when evaluating and specializing.
* bpo-46161: Fix bug in starunpack_helper in compile.c (GH-30235)zq19972022-01-171-1/+4
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* bpo-46344: Fix trace bug in else of try and try-star blocks (GH-30544)Irit Katriel2022-01-131-2/+0
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* bpo-46331: Do not set line number of instruction storing doc-string. (GH-30518)Mark Shannon2022-01-111-0/+1
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* bpo-46314: Remove extra RESUME when compiling a lamdba. (GH-30513)Mark Shannon2022-01-101-144/+142
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* bpo-46286: use the new POP_JUMP_IF_NOT_NONE opcode to simplify except* ↵Irit Katriel2022-01-061-6/+2
| | | | | (GH-30439) Automerge-Triggered-By: GH:iritkatriel
* bpo-45923: Handle call events in bytecode (GH-30364)Mark Shannon2022-01-061-27/+43
| | | | * Add a RESUME instruction to handle "call" events.
* bpo-46031: add POP_JUMP_IF_NOT_NONE and POP_JUMP_IF_NONE (GH-30019)penguin_wwy2022-01-061-0/+27
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* bpo-46009: Remove GEN_START (GH-30367)Brandt Bucher2022-01-041-17/+4
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* bpo-46202: Remove opcode POP_EXCEPT_AND_RERAISE (GH-30302)Irit Katriel2022-01-041-11/+26
| | | | | | * bpo-46202: remove opcode POP_EXCEPT_AND_RERAISE * do not assume that an exception group is truthy
* bpo-46219, 46221: simplify except* implementation following exc_info ↵Irit Katriel2022-01-021-9/+16
| | | | changes. Move helpers to exceptions.c. Do not assume that exception groups are truthy. (GH-30289)
* bpo-45711: Remove type and traceback from exc_info (GH-30122)Irit Katriel2021-12-171-92/+64
| | | | | | | | * Do not PUSH/POP traceback or type to the stack as part of exc_info * Remove exc_traceback and exc_type from _PyErr_StackItem * Add to what's new, because this change breaks things like Cython
* bpo-46039: Split yield from in two (GH-30035)Mark Shannon2021-12-151-16/+39
| | | | | | * Split YIELD_FROM opcode into SEND and JUMP_ABSOLUTE. * Remove YIELD_FROM opcode.
* bpo-44525: Split calls into PRECALL and CALL (GH-30011)Mark Shannon2021-12-141-15/+16
| | | | | | | | | | * Add 3 new opcodes for calls: PRECALL_METHOD, CALL_NO_KW, CALL_KW. * Update specialization to handle new CALL opcodes. * Specialize call to method descriptors. * Remove old CALL opcodes: CALL_FUNCTION, CALL_METHOD, CALL_METHOD_KW, CALL_FUNCTION_KW.
* bpo-45292: [PEP-654] add except* (GH-29581)Irit Katriel2021-12-141-1/+338
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* bpo-37971: fix the position of decorator application (GH-30027)Carl Friedrich Bolz-Tereick2021-12-101-8/+25
| | | | | | | The line numbers of actually calling the decorator functions of functions and classes was wrong (as opposed to loading them, were they have been correct previously too). Co-authored-by: Łukasz Langa <lukasz@langa.pl>
* Delete orphaned comment (#29917)Guido van Rossum2021-12-051-5/+0
| | | (The function this described was deleted by PR #23743, the comment was accidentally retained.)
* bpo-44525: Copy free variables in bytecode to allow calls to inner functions ↵Mark Shannon2021-11-231-2/+19
| | | | | | | | | | | to be specialized (GH-29595) * Make internal APIs that take PyFrameConstructor take a PyFunctionObject instead. * Add reference to function to frame, borrow references to builtins and globals. * Add COPY_FREE_VARS instruction to allow specialization of calls to inner functions.
* Fix link to exception handling notes (GH-29617)Irit Katriel2021-11-191-1/+1
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* bpo-45773: Stop "optimizing" certain jump patterns (GH-29505)Brandt Bucher2021-11-111-76/+41
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* bpo-45636: Merge all numeric operators (GH-29482)Brandt Bucher2021-11-111-106/+59
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* bpo-45711: remove unnecessary DUP_TOP and POP in exception handling (GH-29495)Irit Katriel2021-11-101-6/+4
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* bpo-44511: Improve the bytecode for class and mapping patterns (GH-26922)Brandt Bucher2021-10-271-29/+44
| | | | | | | * Refactor mapping patterns and speed up class patterns. * Simplify MATCH_KEYS and MATCH_CLASS. * Add COPY opcode.
* Fix typos in the Python directory (GH-28767)Christian Clauss2021-10-061-2/+2
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* Normalize jumps in compiler. All forward jumps to use JUMP_FORWARD. (GH-28755)Mark Shannon2021-10-061-0/+23
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* bpo-45355: More use of sizeof(_Py_CODEUNIT) (GH-28720)Serhiy Storchaka2021-10-041-1/+1
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* bpo-45152: Add HAS_CONST macro and get_const_value() function and use… ↵Irit Katriel2021-09-141-7/+39
| | | | (#28262)
* bpo-45056: Remove trailing unused constants from co_consts (GH-28109)Inada Naoki2021-09-021-0/+33
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* bpo-45039: Consistently use ADDOP_LOAD_CONST in compiler rather than ↵Irit Katriel2021-08-311-2/+4
| | | | ADDOP_O(c, LOAD_CONST,...) (GH-28015)
* bpo-45000: Raise SyntaxError when try to delete __debug__ (GH-27947)Dong-hee Na2021-08-251-0/+4
| | | Automerge-Triggered-By: GH:pablogsal
* Remove unused variable. (GH-27677)Mark Shannon2021-08-091-3/+0
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* bpo-44840: Compiler: Move duplication of exit blocks with no line numbers to ↵Mark Shannon2021-08-091-16/+25
| | | | after CFG optimization. (GH-27656)
* bpo-44600: Fix line numbers for pattern matching cleanup code (GH-27346)Charles Burkland2021-07-251-4/+12
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* bpo-44626: Merge basic blocks earlier to enable better handling of exit ↵Mark Shannon2021-07-151-16/+48
| | | | blocks without line numbers (GH-27138)
* bpo-44622: Set line number of END_ASYNC_FOR to match that of iterator. ↵Mark Shannon2021-07-151-1/+3
| | | | (GH-27160)
* bpo-44589: raise a SyntaxError when mapping patterns have duplicate literal ↵Jack DeVries2021-07-151-4/+41
| | | | keys (GH-27131)
* bpo-44616: Mark all clean up instructions at end of named exception block as ↵Mark Shannon2021-07-141-3/+2
| | | | artificial (GH-27109)
* bpo-33346: Allow async comprehensions inside implicit async comprehensions ↵Serhiy Storchaka2021-07-131-6/+8
| | | | | (GH-6766) Co-authored-by: Pablo Galindo <pablogsal@gmail.com>
* bpo-44530: Add co_qualname field to PyCodeObject (GH-26941)Gabriele N. Tornetta2021-07-071-4/+2
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* bpo-43950: optimize column table assembling with pre-sizing object (GH-26997)Batuhan Taskaya2021-07-021-6/+13
| | | | | | | | | | | | | | | | | | | | | | | | | The new resizing system works like this; ``` $ cat t.py a + a + a + b + c + a + a + a + b + c + a + a + a + b + c + a + a + a + b + c [repeated 99 more times] $ ./python t.py RESIZE: prev len = 32, new len = 66 FINAL SIZE: 56 ----------------------------------------------------- RESIZE: prev len = 32, new len = 66 RESIZE: prev len = 66, new len = 134 RESIZE: prev len = 134, new len = 270 RESIZE: prev len = 270, new len = 542 RESIZE: prev len = 542, new len = 1086 RESIZE: prev len = 1086, new len = 2174 RESIZE: prev len = 2174, new len = 4350 RESIZE: prev len = 4350, new len = 8702 FINAL SIZE: 8004 ``` So now we do considerably lower number of `_PyBytes_Resize` calls. Automerge-Triggered-By: GH:isidentical
* bpo-43950: Add code.co_positions (PEP 657) (GH-26955)Pablo Galindo2021-07-021-63/+208
| | | | | | | | | | | | | | | This PR is part of PEP 657 and augments the compiler to emit ending line numbers as well as starting and ending columns from the AST into compiled code objects. This allows bytecodes to be correlated to the exact source code ranges that generated them. This information is made available through the following public APIs: * The `co_positions` method on code objects. * The C API function `PyCode_Addr2Location`. Co-authored-by: Batuhan Taskaya <isidentical@gmail.com> Co-authored-by: Ammar Askar <ammar@ammaraskar.com>
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