Commit Graph

816 Commits

Author SHA1 Message Date
Ken Jin f24afda591
bpo-26110: Add ``CALL_METHOD_KW`` opcode to speedup method calls with keywords (GH-26014)
* Add CALL_METHOD_KW

* Make CALL_METHOD branchless too since it shares the same code

* Place parentheses in STACK_SHRINK
2021-05-15 16:15:23 +01:00
Mark Shannon cb6f3d7163
bpo-43933: Force RETURN_VALUE bytecodes to have line numbers (GH-26054) 2021-05-12 11:25:44 +01:00
Batuhan Taskaya b2ec37a722
bpo-44063: set the missing end locations on the compiler (GH-25956) 2021-05-07 20:49:06 +03:00
Mark Shannon adcd220556
bpo-40222: "Zero cost" exception handling (GH-25729)
"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%.
2021-05-07 15:19:19 +01:00
Pablo Galindo 39494285e1
bpo-43754: Fix compiler warning in Python/compile.c (GH-25855)
This fixes the following warning:

'initializing': conversion from 'Py_ssize_t' to 'int', possible loss of data [D:\a\cpython\cpython\PCbuild\pythoncore.vcxproj]
2021-05-03 16:20:46 +01:00
Brandt Bucher 0ad1e0384c
bpo-43754: Eliminate bindings for partial pattern matches (GH-25229) 2021-05-02 13:02:10 -07:00
Mark Shannon 5979e81a21
bpo-43933: Set frame.f_lineno during call to __exit__ (GH-25719)
* Set line number of __exit__ call in a with statement to be that of the with keyword.
2021-04-30 14:32:47 +01:00
Brandt Bucher dbe60ee09d
bpo-43892: Validate the first term of complex literal value patterns (GH-25735) 2021-04-29 17:19:28 -07:00
Mark Shannon c76da79b37
bpo-42739: Don't use sentinels to mark end of line table. (GH-25657)
* 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.
2021-04-29 13:12:51 +01:00
Nick Coghlan 1e7b858575
bpo-43892: Make match patterns explicit in the AST (GH-25585)
Co-authored-by: Brandt Bucher <brandtbucher@gmail.com>
2021-04-28 22:58:44 -07:00
Batuhan Taskaya 8cc3cfa8af
bpo-42737: annotations with complex targets no longer causes any runtime effects (GH-23952) 2021-04-25 05:31:20 +03:00
Pablo Galindo a77aac4fca
bpo-43914: Highlight invalid ranges in SyntaxErrors (#25525)
To improve the user experience understanding what part of the error messages associated with SyntaxErrors is wrong, we can highlight the whole error range and not only place the caret at the first character. In this way:

>>> foo(x, z for z in range(10), t, w)
  File "<stdin>", line 1
    foo(x, z for z in range(10), t, w)
           ^
SyntaxError: Generator expression must be parenthesized

becomes

>>> foo(x, z for z in range(10), t, w)
  File "<stdin>", line 1
    foo(x, z for z in range(10), t, w)
           ^^^^^^^^^^^^^^^^^^^^
SyntaxError: Generator expression must be parenthesized
2021-04-23 14:27:05 +01:00
Pablo Galindo b0544ba77c
bpo-38605: Revert making 'from __future__ import annotations' the default (GH-25490)
This reverts commits 044a1048ca and 1be456ae9d, adapting the code to changes that happened after it.
2021-04-21 12:41:19 +01:00
Inada Naoki 8a232c7b17
bpo-41323: compiler: Reuse tuple in constant tuple folding (GH-25419) 2021-04-16 14:01:04 +09:00
Mark Shannon 11e0b295de
bpo-43846: Use less stack for large literals and calls (GH-25403)
* Modify compiler to reduce stack consumption for large expressions.

* Add more tests for stack usage.

* Add NEWS item.

* Raise SystemError for truly excessive stack use.
2021-04-15 14:28:56 +01:00
tomKPZ 7a7ba3d343
bpo-43495 : Push missing frame block in compile.c (GH-24865) 2021-04-07 15:43:45 +01:00
Mark Shannon 67969f5eb8
Correct micro release number and add a couple of asserts. (GH-25224) 2021-04-07 10:52:07 +01:00
Mark Shannon b37181e692
bpo-43683: Handle generator entry in bytecode (GH-25138)
* Handle check for sending None to starting generator and coroutine into bytecode.

* Document new bytecode and make it fail gracefully if mis-compiled.
2021-04-06 11:48:59 +01:00
Mark Shannon fcb55c0037
bpo-27129: Use instruction offsets, not byte offsets, in bytecode and 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
2021-04-01 16:00:31 +01:00
Victor Stinner a81fca6ec8
bpo-43244: Add pycore_compile.h header file (GH-25000)
Remove the compiler functions using "struct _mod" type, because the
public AST C API was removed:

* PyAST_Compile()
* PyAST_CompileEx()
* PyAST_CompileObject()
* PyFuture_FromAST()
* PyFuture_FromASTObject()

These functions were undocumented and excluded from the limited C API.

Rename functions:

* PyAST_CompileObject() => _PyAST_Compile()
* PyFuture_FromASTObject() => _PyFuture_FromAST()

Moreover, _PyFuture_FromAST() is no longer exported (replace
PyAPI_FUNC() with extern). _PyAST_Compile() remains exported for
test_peg_generator.

Remove also compatibility functions:

* PyAST_Compile()
* PyAST_CompileEx()
* PyFuture_FromAST()
2021-03-24 00:51:50 +01:00
Victor Stinner 28ad12f8fe
bpo-43244: Remove symtable.h header file (GH-24910)
Rename Include/symtable.h to to Include/internal/pycore_symtable.h,
don't export symbols anymore (replace PyAPI_FUNC and PyAPI_DATA with
extern) and rename functions:

* PyST_GetScope() to _PyST_GetScope()
* PySymtable_BuildObject() to _PySymtable_Build()
* PySymtable_Free() to _PySymtable_Free()

Remove PySymtable_Build(), Py_SymtableString() and
Py_SymtableStringObject() functions.

The Py_SymtableString() function was part the stable ABI by mistake
but it could not be used, since the symtable.h header file was
excluded from the limited C API.

The Python symtable module remains available and is unchanged.
2021-03-19 12:41:49 +01:00
Victor Stinner 526fdeb227
bpo-43244: Add pycore_ast.h header file (GH-24908)
Move _PyAST_GetDocString() and _PyAST_ExprAsUnicode() functions the
internal C API: from Include/ast.h to a new
Include/internal/pycore_ast.h header file. Don't export these
functions anymore: replace PyAPI_FUNC() with extern.

Remove also unused includes.
2021-03-17 23:50:50 +01:00
tsukasa-au a8ef4572a6
bpo-43497: Emit SyntaxWarnings for assertions with tuple constants. (GH-24867)
* bpo-43497: Emit SyntaxWarnings for assertions with tuple constants.

Add a test that shows that a tuple constant (a tuple, where all of its
members are also compile-time constants) produces a SyntaxWarning. Then
fix this failure.

* Make SyntaxWarnings also work when "optimized".

* Split tests for SyntaxWarning to SyntaxError conversion

SyntaxWarnings emitted by the compiler when configured to be errors are
actually raised as SyntaxError exceptions.

Move these tests into their own method and add a test to ensure they are
raised. Previously we only tested that they were not raised for a
"valid" assertion statement.
2021-03-16 11:14:41 +00:00
Mark Shannon c5440937ef
Mark POP_TOP at end of expression statement as artificial, to conform to PEP 626. (GH-24860) 2021-03-15 14:24:25 +00:00
Mark Shannon d48848c83e
bpo-39316: Make sure that attribute accesses and stores, including method calls, conform to PEP 626. (GH-24859) 2021-03-14 18:01:30 +00:00
Ikko Ashimine 57827f8754
Fix typo in compile.c (GH-24812)
guranteed -> guaranteed
2021-03-10 10:39:51 +00:00
Alex Henrie 503627fc2a
bpo-43358: Fix bad free in assemble function (GH-24697) 2021-03-02 10:20:25 +00:00
Brandt Bucher 145bf269df
bpo-42128: Structural Pattern Matching (PEP 634) (GH-22917)
Co-authored-by: Guido van Rossum <guido@python.org>
Co-authored-by: Talin <viridia@gmail.com>
Co-authored-by: Pablo Galindo <pablogsal@gmail.com>
2021-02-26 14:51:55 -08:00
Inada Naoki bdb941be42
bpo-42217: compiler: merge same co_code and co_linetable objects (GH-23056) 2021-02-10 09:20:42 +09:00
Mark Shannon 802b645e81
Only eliminate jumps to successor block if jump is unconditional. (GH-24417)
* Prevents elimination of the sole test of a value in statements like:
   if x or True: ...
2021-02-02 14:59:15 +00:00
Pablo Galindo 86e322f141
bpo-40455: Fix gcc10+ warning about writing into a section of offset 0 (GH-24384) 2021-01-30 22:54:22 +09:00
Victor Stinner ba7a99ddb5
bpo-38631: Replace compiler fatal errors with exceptions (GH-24369)
* Replace Py_FatalError() calls with regular SystemError exceptions.
* compiler_exit_scope() calls _PyErr_WriteUnraisableMsg() to log the
  PySequence_DelItem() failure.
* compiler_unit_check() uses _PyMem_IsPtrFreed().
* compiler_make_closure(): remove "(reftype == FREE)" comment since
  reftype can also be LOCAL or GLOBAL_EXPLICIT.
2021-01-30 01:46:44 +01:00
Pablo Galindo 7fdab8331b
Fix a reference leak in the compiler for compiler_lambda() (GH-24382) 2021-01-29 22:40:59 +00:00
Victor Stinner a6192635f1
bpo-42979: Use _Py_CheckSlotResult() to check slots result (GH-24356)
When Python is built in debug mode (with C assertions), calling a
type slot like sq_length (__len__() in Python) now fails with a fatal
error if the slot succeeded with an exception set, or failed with no
exception set. The error message contains the slot, the type name,
and the current exception (if an exception is set).

* Check the result of all slots using _Py_CheckSlotResult().
* No longer pass op_name to ternary_op() in release mode.
* Replace operator with dunder Python method name in error messages.
  For example, replace "*" with "__mul__".
* Fix compiler_exit_scope() when an exception is set.
* Fix bytearray.extend() when an exception is set: don't call
  bytearray_setslice() with an exception set.
2021-01-29 16:53:03 +01:00
Irit Katriel dea5bf9d15
bpo-33387: update documentation for exception handling opcode changes (GH-24334)
* bpo-33387: remove obsolete comment

* bpo-33387: update SETUP_WITH opcode documentation
2021-01-26 10:17:13 +00:00
Mark Shannon e56d54e447
Mark instructions at end of class scope as artificial. (GH-24222) 2021-01-15 13:52:00 +00:00
Mark Shannon 1659ad1c64
Eliminate NOPs in extended blocks. (GH-24209) 2021-01-13 15:05:04 +00:00
Mark Shannon 3bd6035b6b
bpo-42908: Mark cleanup code at end of try-except and with artificial (#24202)
* 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
2021-01-13 12:05:43 +00:00
Mark Shannon ee9f98d9f4
bpo-42823: Fix frame lineno when frame.f_trace is set (GH-24099)
* Add test for frame.f_lineno with/without tracing.

* Make sure that frame.f_lineno is correct regardless of whether frame.f_trace is set.

* Update importlib

* Add NEWS
2021-01-05 12:04:10 +00:00
Mark Shannon 127dde5916
bpo-42810: Mark jumps at end of if and try statements as artificial. (GH-24091)
* Mark jumps at end of if and try statements as artificial.

* Update importlib

* Add comment explaining the purpose of ADDOP_JUMP_NOLINE.
2021-01-04 18:06:55 +00:00
Mark Shannon bf06b209da
Delete the now unused c_do_not_emit_bytecode field. (#24094) 2021-01-04 13:51:17 +00:00
Mark Shannon 28b75c80dc
bpo-42246: Don't eliminate jumps to jumps, if it will break PEP 626. (GH-23896) 2020-12-23 11:43:10 +00:00
Mark Shannon f2dbfd7e20
bpo-42634: Mark reraise after except blocks as artificial. (GH-23877)
* Mark reraise after except blocks as artificial.

* Update importlib

* Update dis test.
2020-12-21 13:53:50 +00:00
Mark Shannon bf353f3c2d
bpo-42246: Make sure that `f_lasti`, and thus `f_lineno`, is set correctly 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.
2020-12-17 13:55:28 +00:00
Mark Shannon 5274b682bc
bpo-42645: Make sure that return/break/continue are only traced once when exiting via a finally block. (GH-23780)
* Make sure that return/break/continue are only traced once when exiting via a finally block.

* Add test for return in try-finally.

* Update importlib
2020-12-16 13:07:01 +00:00
Om G c71581c7a4
bpo-42615: Delete redundant jump instructions that only bypass empty blocks (GH-23733)
* Delete jump instructions that bypass empty blocks

* Add news entry

* Explicitly check for unconditional jump opcodes

Using the is_jump function results in the inclusion of instructions like
returns for which this optimization is not really valid. So, instead
explicitly check that the instruction is an unconditional jump.

* Handle conditional jumps, delete jumps gracefully

* Ensure b_nofallthrough and b_reachable are valid

* Add test for redundant jumps

* Regenerate importlib.h and edit Misc/ACKS

* Fix bad whitespace
2020-12-16 12:18:05 +00:00
Mark Shannon 8473cf89bd
bpo-42246: Remove DO_NOT_EMIT_BYTECODE macros, so that while loops and if statements conform to PEP 626. (GH-23743) 2020-12-15 11:07:50 +00:00
Mark Shannon f5e97b72fe
bpo-42635: Mark JUMP_ABSOLUTE at end of 'for' loop as artificial to avoid spurious line events. (GH-23761) 2020-12-14 11:28:39 +00:00
Mark Shannon 56aa20f9eb
Don't generate spurious line number in try-except-finally. (#23760) 2020-12-14 10:19:10 +00:00
Mark Shannon eaccc12aa9
bpo-42246: Don't forget the entry block when ensuring that all exits have a line number (GH-23636)
Don't forget the entry block when ensuring that all exits have a line number.
2020-12-04 15:22:12 +00:00