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* bpo-45019: Add a tool to generate list of modules to include for frozen ↵Eric Snow2021-08-30
| | | | | | | modules (gh-27980) Frozen modules must be added to several files in order to work properly. Before this change this had to be done manually. Here we add a tool to generate the relevant lines in those files instead. This helps us avoid mistakes and omissions. https://bugs.python.org/issue45019
* bpo-44885: Correct the ast locations of f-strings with format specs and ↵Pablo Galindo Salgado2021-08-12
| | | | repeated expressions (GH-27729)
* bpo-44840: Compiler: Move duplication of exit blocks with no line numbers to ↵Mark Shannon2021-08-09
| | | | after CFG optimization. (GH-27656)
* bpo-44616: Mark all clean up instructions at end of named exception block as ↵Mark Shannon2021-07-14
| | | | artificial (GH-27109)
* bpo-44530: Add co_qualname field to PyCodeObject (GH-26941)Gabriele N. Tornetta2021-07-07
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* bpo-43950: Add code.co_positions (PEP 657) (GH-26955)Pablo Galindo2021-07-02
| | | | | | | | | | | | | | | 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>
* bpo-44313: generate LOAD_ATTR/CALL_FUNCTION for top-level imported objects ↵Batuhan Taskaya2021-06-30
| | | | (GH-26677)
* Make sure that line number is set correctly for call to __exit__ when ↵Mark Shannon2021-06-24
| | | | handling exception in body of a with statement. (GH-26890)
* bpo-43693 Get rid of CO_NOFREE -- it's unused (GH-26839)Guido van Rossum2021-06-23
| | | | | | All uses of this flag are either setting it or in doc or tests for it. So we should be able to get rid of it completely.
* bpo-43693: Turn localspluskinds into an object (GH-26749)Guido van Rossum2021-06-21
| | | Managing it as a bare pointer to malloc'ed bytes is just too awkward in a few places.
* bpo-43693: Un-revert commits 2c1e258 and b2bf2bc. (gh-26577)Eric Snow2021-06-07
| | | | | | | | | | These were reverted in gh-26530 (commit 17c4edc) due to refleaks. * 2c1e258 - Compute deref offsets in compiler (gh-25152) * b2bf2bc - Add new internal code objects fields: co_fastlocalnames and co_fastlocalkinds. (gh-26388) This change fixes the refleaks. https://bugs.python.org/issue43693
* bpo-43693: Revert commits 2c1e2583fdc4db6b43d163239ea42b0e8394171f and ↵Pablo Galindo2021-06-04
| | | | | | | | | | | | | b2bf2bc1ece673d387341e06c8d3c2bc6e259747 (GH-26530) * Revert "bpo-43693: Compute deref offsets in compiler (gh-25152)" This reverts commit b2bf2bc1ece673d387341e06c8d3c2bc6e259747. * Revert "bpo-43693: Add new internal code objects fields: co_fastlocalnames and co_fastlocalkinds. (gh-26388)" This reverts commit 2c1e2583fdc4db6b43d163239ea42b0e8394171f. These two commits are breaking the refleak buildbots.
* bpo-43693: Add new internal code objects fields: co_fastlocalnames and ↵Eric Snow2021-06-03
| | | | | | | | | | | | | | | | | co_fastlocalkinds. (gh-26388) A number of places in the code base (notably ceval.c and frameobject.c) rely on mapping variable names to indices in the frame "locals plus" array (AKA fast locals), and thus opargs. Currently the compiler indirectly encodes that information on the code object as the tuples co_varnames, co_cellvars, and co_freevars. At runtime the dependent code must calculate the proper mapping from those, which isn't ideal and impacts performance-sensitive sections. This is something we can easily address in the compiler instead. This change addresses the situation by replacing internal use of co_varnames, etc. with a single combined tuple of names in locals-plus order, along with a minimal array mapping each to its kind (local vs. cell vs. free). These two new PyCodeObject fields, co_fastlocalnames and co_fastllocalkinds, are not exposed to Python code for now, but co_varnames, etc. are still available with the same values as before (though computed lazily). Aside from the (mild) performance impact, there are a number of other benefits: * there's now a clear, direct relationship between locals-plus and variables * code that relies on the locals-plus-to-name mapping is simpler * marshaled code objects are smaller and serialize/de-serialize faster Also note that we can take this approach further by expanding the possible values in co_fastlocalkinds to include specific argument types (e.g. positional-only, kwargs). Doing so would allow further speed-ups in _PyEval_MakeFrameVector(), which is where args get unpacked into the locals-plus array. It would also allow us to shrink marshaled code objects even further. https://bugs.python.org/issue43693
* bpo-43693: Add _PyCode_New(). (gh-26375)Eric Snow2021-05-27
| | | | | This is an internal-only API that helps us manage the many values used to create a code object. https://bugs.python.org/issue43693
* bpo-26110: Add ``CALL_METHOD_KW`` opcode to speedup method calls with ↵Ken Jin2021-05-15
| | | | | | | | | keywords (GH-26014) * Add CALL_METHOD_KW * Make CALL_METHOD branchless too since it shares the same code * Place parentheses in STACK_SHRINK
* bpo-40222: "Zero cost" exception handling (GH-25729)Mark Shannon2021-05-07
| | | | | | | | "Zero cost" exception handling. * Uses a lookup table to determine how to handle exceptions. * Removes SETUP_FINALLY and POP_TOP block instructions, eliminating (most of) the runtime overhead of try statements. * Reduces the size of the frame object by about 60%.
* bpo-43933: Set frame.f_lineno during call to __exit__ (GH-25719)Mark Shannon2021-04-30
| | | * Set line number of __exit__ call in a with statement to be that of the with keyword.
* bpo-42739: Don't use sentinels to mark end of line table. (GH-25657)Mark Shannon2021-04-29
| | | | | * Add length parameter to PyLineTable_InitAddressRange and doen't use sentinel values at end of table. Makes the line number table more robust. * Update PyCodeAddressRange to match PEP 626.
* bpo-41323: compiler: Reuse tuple in constant tuple folding (GH-25419)Inada Naoki2021-04-16
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* bpo-42135: Deprecate implementations of find_module() and find_loader() ↵Brett Cannon2021-04-06
| | | | (GH-25169)
* bpo-27129: Use instruction offsets, not byte offsets, in bytecode and ↵Mark Shannon2021-04-01
| | | | | | | internally. (GH-25069) * Use instruction offset, rather than bytecode offset. Streamlines interpreter dispatch a bit, and removes most EXTENDED_ARGs for jumps. * Change some uses of PyCode_Addr2Line to PyFrame_GetLineNumber
* bpo-14678: Update zipimport to support importlib.invalidate_caches() (GH-24159)Desmond Cheong2021-03-08
| | | Added an invalidate_caches() method to the zipimport.zipimporter class based on the implementation of importlib.FileFinder.invalidate_caches(). This was done by adding a get_files() method and an _archive_mtime attribute to zipimport.zipimporter to check for updates or cache invalidation whenever the cache of files and toc entry information in the zipimporter is accessed.
* bpo-42908: Mark cleanup code at end of try-except and with artificial (#24202)Mark Shannon2021-01-13
| | | | | | | | | * Mark bytecodes at end of try-except as artificial. * Make sure that the CFG is consistent throughout optimiization. * Extend line-number propagation logic so that implicit returns after 'try-except' or 'with' have the correct line numbers. * Update importlib
* bpo-42810: Mark jumps at end of if and try statements as artificial. (GH-24091)Mark Shannon2021-01-04
| | | | | | | * Mark jumps at end of if and try statements as artificial. * Update importlib * Add comment explaining the purpose of ADDOP_JUMP_NOLINE.
* bpo-42246: Don't eliminate jumps to jumps, if it will break PEP 626. (GH-23896)Mark Shannon2020-12-23
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* bpo-42634: Mark reraise after except blocks as artificial. (GH-23877)Mark Shannon2020-12-21
| | | | | | | * Mark reraise after except blocks as artificial. * Update importlib * Update dis test.
* bpo-24792: Fix zipimporter masking the cause of import errors (GH-22204)Irit Katriel2020-12-18
| | | | | zipimport's _unmarshal_code swallows import errors and then _get_module_code doesn't know the cause of the error, and returns the generic, and sometimes incorrect, 'could not find...'. Automerge-Triggered-By: GH:brettcannon
* bpo-42246: Make sure that `f_lasti`, and thus `f_lineno`, is set correctly ↵Mark Shannon2020-12-17
| | | | | | | | | after raising or reraising an exception (GH-23803) * Ensure that f_lasti is set correctly after an exception is raised to conform to PEP 626. * Update importlib * Add NEWS.
* bpo-42246: Remove DO_NOT_EMIT_BYTECODE macros, so that while loops and if ↵Mark Shannon2020-12-15
| | | | statements conform to PEP 626. (GH-23743)
* Don't generate spurious line number in try-except-finally. (#23760)Mark Shannon2020-12-14
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* bpo-26131: Deprecate usage of load_module() (GH-23469)Brett Cannon2020-12-04
| | | Raise an ImportWarning when the import system falls back on load_module(). As for implementations of load_module(), raise a DeprecationWarning.
* bpo-42246: Make sure that line number is correct after a return, as required ↵Mark Shannon2020-12-02
| | | | | by PEP 626 (GH-23495) Make sure that line number is correct after a return, as defined by PEP 626.
* bpo-42349: Compiler clean up. More yak-shaving for PEP 626. (GH-23267)Mark Shannon2020-11-17
| | | Make sure that CFG from compiler front-end is correct. Be a bit more aggressive in the compiler back-end.
* bpo-42131: Add PEP 451-related methods to zipimport (GH-23187)Brett Cannon2020-11-13
| | | | | Specifically, find_spec(), create_module(), and exec_module(). Co-authored-by: Nick Coghlan <ncoghlan@gmail.com>
* bpo-42246: Eliminate jumps to exit blocks by copying those blocks. (#23251)Mark Shannon2020-11-12
| | | * Compiler: eliminate jumps to short exit blocks by copying.
* bpo-42246: Partial implementation of PEP 626. (GH-23113)Mark Shannon2020-11-12
| | | * Implement new line number table format, as defined in PEP 626.
* bpo-41323: Perform 'peephole' optimizations directly on the CFG. (GH-21517)Mark Shannon2020-07-30
| | | * Move 'peephole' optimizations into compile.c and perform them directly on the CFG.
* bpo-39791 native hooks for importlib.resources.files (GH-20576)Jason R. Coombs2020-06-07
| | | | | | | | | | | | | | | | | | | | | | | | | * Provide native .files support on SourceFileLoader. * Add native importlib.resources.files() support to zipimporter. Remove fallback support. * make regen-all * 📜🤖 Added by blurb_it. * Move 'files' into the ResourceReader so it can carry the relevant module name context. * Create 'importlib.readers' module and add FileReader to it. * Add zip reader and rely on it for a TraversableResources object on zipimporter. * Remove TraversableAdapter, no longer needed. * Update blurb. * Replace backslashes with forward slashes. * Incorporate changes from importlib_metadata 2.0, finalizing the interface for extension via get_resource_reader. Co-authored-by: blurb-it[bot] <43283697+blurb-it[bot]@users.noreply.github.com>
* bpo-39987: Simplify setting lineno in the compiler. (GH-19037)Serhiy Storchaka2020-03-17
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* bpo-39156: Break up COMPARE_OP into four logically distinct opcodes. (GH-17754)Mark Shannon2020-01-14
| | | | | | | | Break up COMPARE_OP into four logically distinct opcodes: * COMPARE_OP for rich comparisons * IS_OP for 'is' and 'is not' tests * CONTAINS_OP for 'in' and 'is not' tests * JUMP_IF_NOT_EXC_MATCH for checking exceptions in 'try-except' statements.
* bpo-39033: Fix NameError in zipimport during hash validation (GH-17588)Xtreak2019-12-16
| | | | Patch by Karthikeyan Singaravelan.
* Produce cleaner bytecode for 'with' and 'async with' by generating separate ↵Mark Shannon2019-11-21
| | | | | | code for normal and exceptional paths. (#6641) Remove BEGIN_FINALLY, END_FINALLY, CALL_FINALLY and POP_FINALLY bytecodes. Implement finally blocks by code duplication. Reimplement frame.lineno setter using line numbers rather than bytecode offsets.
* bpo-34880: Add the LOAD_ASSERTION_ERROR opcode. (GH-15073)Zackery Spytz2019-08-25
| | | | Fix assert statement misbehavior if AssertionError is shadowed.
* bpo-37830: Fix compilation of break and continue in finally. (GH-15320)Serhiy Storchaka2019-08-24
| | | | | | Fix compilation of "break" and "continue" in the "finally" block when the corresponding "try" block contains "return" with a non-constant value.
* bpo-37213: Handle negative line deltas correctly in the peephole optimizer ↵Pablo Galindo2019-06-13
| | | | | (GH-13969) The peephole optimizer was not optimizing correctly bytecode after negative deltas were introduced. This is due to the fact that some special values (255) were being searched for in both instruction pointer delta and line number deltas.
* bpo-36842: Implement PEP 578 (GH-12613)Steve Dower2019-05-23
| | | Adds sys.audit, sys.addaudithook, io.open_code, and associated C APIs.
* bpo-36540: PEP 570 -- Implementation (GH-12701)Pablo Galindo2019-04-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This commit contains the implementation of PEP570: Python positional-only parameters. * Update Grammar/Grammar with new typedarglist and varargslist * Regenerate grammar files * Update and regenerate AST related files * Update code object * Update marshal.c * Update compiler and symtable * Regenerate importlib files * Update callable objects * Implement positional-only args logic in ceval.c * Regenerate frozen data * Update standard library to account for positional-only args * Add test file for positional-only args * Update other test files to account for positional-only args * Add News entry * Update inspect module and related tests
* bpo-16806: Fix `lineno` and `col_offset` for multi-line string tokens (GH-10021)Anthony Sottile2019-01-13
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* bpo-31241: Fix AST node position for list and generator comprehensions. ↵Serhiy Storchaka2018-11-27
| | | | | | | | (GH-10633) The lineno and col_offset attributes of AST nodes for list comprehensions, generator expressions and tuples are now point to the opening parenthesis or square brace. For tuples without parenthesis they point to the position of the first item.
* bpo-34100: Merge constants recursively (GH-8341)INADA Naoki2018-11-26
| | | | | | | There are some same consts in a module. This commit merges them into single instance. It reduces number of objects in memory after loading modules. https://bugs.python.org/issue34100
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