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* Issue #27078: Added BUILD_STRING opcode. Optimized f-strings evaluation.Serhiy Storchaka2016-09-061-0/+1
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* Issue #27095: Simplified MAKE_FUNCTION and removed MAKE_CLOSURE opcodes.Serhiy Storchaka2016-06-121-2/+1
| | | | Patch by Demur Rumed.
* Issue #27140: Added BUILD_CONST_KEY_MAP opcode.Serhiy Storchaka2016-06-111-0/+1
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* Issue #26647: Cleanup opcodeVictor Stinner2016-04-121-3/+1
| | | | Simplify code to build opcode.opname. Patch written by Demur Rumed.
* Issue 25483: Add an opcode to make f-string formatting more robust.Eric V. Smith2015-11-031-0/+2
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* Issue #24400: Introduce a distinct type for 'async def' coroutines.Yury Selivanov2015-06-221-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Summary of changes: 1. Coroutines now have a distinct, separate from generators type at the C level: PyGen_Type, and a new typedef PyCoroObject. PyCoroObject shares the initial segment of struct layout with PyGenObject, making it possible to reuse existing generators machinery. The new type is exposed as 'types.CoroutineType'. As a consequence of having a new type, CO_GENERATOR flag is no longer applied to coroutines. 2. Having a separate type for coroutines made it possible to add an __await__ method to the type. Although it is not used by the interpreter (see details on that below), it makes coroutines naturally (without using __instancecheck__) conform to collections.abc.Coroutine and collections.abc.Awaitable ABCs. [The __instancecheck__ is still used for generator-based coroutines, as we don't want to add __await__ for generators.] 3. Add new opcode: GET_YIELD_FROM_ITER. The opcode is needed to allow passing native coroutines to the YIELD_FROM opcode. Before this change, 'yield from o' expression was compiled to: (o) GET_ITER LOAD_CONST YIELD_FROM Now, we use GET_YIELD_FROM_ITER instead of GET_ITER. The reason for adding a new opcode is that GET_ITER is used in some contexts (such as 'for .. in' loops) where passing a coroutine object is invalid. 4. Add two new introspection functions to the inspec module: getcoroutinestate(c) and getcoroutinelocals(c). 5. inspect.iscoroutine(o) is updated to test if 'o' is a native coroutine object. Before this commit it used abc.Coroutine, and it was requested to update inspect.isgenerator(o) to use abc.Generator; it was decided, however, that inspect functions should really be tailored for checking for native types. 6. sys.set_coroutine_wrapper(w) API is updated to work with only native coroutines. Since types.coroutine decorator supports any type of callables now, it would be confusing that it does not work for all types of coroutines. 7. Exceptions logic in generators C implementation was updated to raise clearer messages for coroutines: Before: TypeError("generator raised StopIteration") After: TypeError("coroutine raised StopIteration")
* remove STORE_MAP, since it's unusedBenjamin Peterson2015-05-281-1/+0
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* PEP 0492 -- Coroutines with async and await syntax. Issue #24017.Yury Selivanov2015-05-121-1/+9
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* PEP 448: additional unpacking generalizations (closes #2292)Benjamin Peterson2015-05-061-0/+6
| | | | Patch by Neil Girdhar.
* PEP 465: a dedicated infix operator for matrix multiplication (closes #21176)Benjamin Peterson2014-04-101-0/+3
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* Issue #19722: Added opcode.stack_effect(), which accuratelyLarry Hastings2013-11-231-0/+13
| | | | computes the stack effect of bytecode instructions.
* rather than passing locals to the class body, just execute the class body in ↵Benjamin Peterson2013-05-161-1/+0
| | | | the proper environment
* check local class namespace before reaching for cells (closes #17853)Benjamin Peterson2013-04-301-0/+3
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* Issue #11823: disassembly now shows argument counts on calls with keyword argsAlexander Belopolsky2012-06-071-1/+6
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* Implement PEP 380 - 'yield from' (closes #11682)Nick Coghlan2012-01-131-0/+1
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* excise the remains of STOP_CODE, which hasn't done anything useful for yearsBenjamin Peterson2011-07-181-1/+0
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* #4617: Previously it was illegal to delete a name from the localAmaury Forgeot d'Arc2010-09-101-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | namespace if it occurs as a free variable in a nested block. This limitation of the compiler has been lifted, and a new opcode introduced (DELETE_DEREF). This sample was valid in 2.6, but fails to compile in 3.x without this change:: >>> def f(): ... def print_error(): ... print(e) ... try: ... something ... except Exception as e: ... print_error() ... # implicit "del e" here This sample has always been invalid in Python, and now works:: >>> def outer(x): ... def inner(): ... return x ... inner() ... del x There is no need to bump the PYC magic number: the new opcode is used for code that did not compile before.
* Issue #9225: Remove the ROT_FOUR and DUP_TOPX opcode, the latter replacedAntoine Pitrou2010-09-041-2/+1
| | | | | by the new (and simpler) DUP_TOP_TWO. Performance isn't changed, but our bytecode is a bit simplified. Patch by Demur Rumed.
* Merged revisions 72912,72920,72940 via svnmerge fromBenjamin Peterson2009-06-281-2/+4
| | | | | | | | | | | | | | | | | | | | | svn+ssh://pythondev@svn.python.org/python/trunk ........ r72912 | benjamin.peterson | 2009-05-25 08:13:44 -0500 (Mon, 25 May 2009) | 5 lines add a SETUP_WITH opcode It speeds up the with statement and correctly looks up the special methods involved. ........ r72920 | benjamin.peterson | 2009-05-25 15:12:57 -0500 (Mon, 25 May 2009) | 1 line take into account the fact that SETUP_WITH pushes a finally block ........ r72940 | benjamin.peterson | 2009-05-26 07:49:59 -0500 (Tue, 26 May 2009) | 1 line teach the peepholer about SETUP_WITH ........
* http://bugs.python.org/issue4715Jeffrey Yasskin2009-02-251-3/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch by Antoine Pitrou optimizes the bytecode for conditional branches by merging the following "POP_TOP" instruction into the conditional jump. For example, the list comprehension "[x for x in l if not x]" produced the following bytecode: 1 0 BUILD_LIST 0 3 LOAD_FAST 0 (.0) >> 6 FOR_ITER 23 (to 32) 9 STORE_FAST 1 (x) 12 LOAD_FAST 1 (x) 15 JUMP_IF_TRUE 10 (to 28) 18 POP_TOP 19 LOAD_FAST 1 (x) 22 LIST_APPEND 2 25 JUMP_ABSOLUTE 6 >> 28 POP_TOP 29 JUMP_ABSOLUTE 6 >> 32 RETURN_VALUE but after the patch it produces the following bytecode: 1 0 BUILD_LIST 0 3 LOAD_FAST 0 (.0) >> 6 FOR_ITER 18 (to 27) 9 STORE_FAST 1 (x) 12 LOAD_FAST 1 (x) 15 POP_JUMP_IF_TRUE 6 18 LOAD_FAST 1 (x) 21 LIST_APPEND 2 24 JUMP_ABSOLUTE 6 >> 27 RETURN_VALUE Notice that not only the code is shorter, but the conditional jump (POP_JUMP_IF_TRUE) jumps right to the start of the loop instead of going through the JUMP_ABSOLUTE at the end. "continue" statements are helped similarly. Furthermore, the old jump opcodes (JUMP_IF_FALSE, JUMP_IF_TRUE) have been replaced by two new opcodes: - JUMP_IF_TRUE_OR_POP, which jumps if true and pops otherwise - JUMP_IF_FALSE_OR_POP, which jumps if false and pops otherwise
* Merged revisions 67818 via svnmerge fromAntoine Pitrou2008-12-181-2/+5
| | | | | | | | | | svn+ssh://pythondev@svn.python.org/python/trunk ........ r67818 | antoine.pitrou | 2008-12-17 01:38:28 +0100 (mer., 17 déc. 2008) | 3 lines Issue #2183: Simplify and optimize bytecode for list comprehensions. ........
* Remove MAKE_BYTES which is a leftover from the mutable byte literal time.Georg Brandl2008-07-201-1/+1
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* #3021: Antoine Pitrou's Lexical exception handlersBenjamin Peterson2008-06-111-0/+1
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* Add missing UNPACK_EX opcode.Thomas Wouters2008-03-181-1/+1
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* Merged revisions 59541-59561 via svnmerge fromChristian Heimes2007-12-191-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | svn+ssh://pythondev@svn.python.org/python/trunk ........ r59544 | raymond.hettinger | 2007-12-18 01:13:45 +0100 (Tue, 18 Dec 2007) | 1 line Add more namedtuple() test cases. Neaten the code and comments. ........ r59545 | christian.heimes | 2007-12-18 04:38:03 +0100 (Tue, 18 Dec 2007) | 3 lines Fixed for #1601: IDLE not working correctly on Windows (Py30a2/IDLE30a1) Amaury's ideas works great. Should we build the Python core with WINVER=0x0500 and _WIN32_WINNT=0x0500, too? ........ r59546 | christian.heimes | 2007-12-18 10:00:13 +0100 (Tue, 18 Dec 2007) | 1 line Make it a bit easier to test Tcl/Tk and idle from a build dir. ........ r59547 | christian.heimes | 2007-12-18 10:12:10 +0100 (Tue, 18 Dec 2007) | 1 line Removed several unused files from the PCbuild9 directory. They are relics from the past. ........ r59548 | raymond.hettinger | 2007-12-18 19:26:18 +0100 (Tue, 18 Dec 2007) | 29 lines Speed-up dictionary constructor by about 10%. New opcode, STORE_MAP saves the compiler from awkward stack manipulations and specializes for dicts using PyDict_SetItem instead of PyObject_SetItem. Old disassembly: 0 BUILD_MAP 0 3 DUP_TOP 4 LOAD_CONST 1 (1) 7 ROT_TWO 8 LOAD_CONST 2 ('x') 11 STORE_SUBSCR 12 DUP_TOP 13 LOAD_CONST 3 (2) 16 ROT_TWO 17 LOAD_CONST 4 ('y') 20 STORE_SUBSCR New disassembly: 0 BUILD_MAP 0 3 LOAD_CONST 1 (1) 6 LOAD_CONST 2 ('x') 9 STORE_MAP 10 LOAD_CONST 3 (2) 13 LOAD_CONST 4 ('y') 16 STORE_MAP ........ r59549 | thomas.heller | 2007-12-18 20:00:34 +0100 (Tue, 18 Dec 2007) | 2 lines Issue #1642: Fix segfault in ctypes when trying to delete attributes. ........ r59551 | guido.van.rossum | 2007-12-18 21:10:42 +0100 (Tue, 18 Dec 2007) | 2 lines Issue #1645 by Alberto Bertogli. Fix a comment. ........ r59553 | raymond.hettinger | 2007-12-18 22:24:09 +0100 (Tue, 18 Dec 2007) | 12 lines Give meaning to the oparg for BUILD_MAP: estimated size of the dictionary. Allows dictionaries to be pre-sized (upto 255 elements) saving time lost to re-sizes with their attendant mallocs and re-insertions. Has zero effect on small dictionaries (5 elements or fewer), a slight benefit for dicts upto 22 elements (because they had to resize once anyway), and more benefit for dicts upto 255 elements (saving multiple resizes during the build-up and reducing the number of collisions on the first insertions). Beyond 255 elements, there is no addional benefit. ........ r59554 | christian.heimes | 2007-12-18 22:56:09 +0100 (Tue, 18 Dec 2007) | 1 line Fixed #1649: IDLE error: dictionary changed size during iteration ........ r59557 | raymond.hettinger | 2007-12-18 23:21:27 +0100 (Tue, 18 Dec 2007) | 1 line Simplify and speedup _asdict() for named tuples. ........ r59558 | christian.heimes | 2007-12-19 00:22:54 +0100 (Wed, 19 Dec 2007) | 3 lines Applied patch #1635: Float patch for inf and nan on Windows (and other platforms). The patch unifies float("inf") and repr(float("inf")) on all platforms. ........ r59559 | raymond.hettinger | 2007-12-19 00:51:15 +0100 (Wed, 19 Dec 2007) | 1 line Users demand iterable input for named tuples. The author capitulates. ........ r59560 | raymond.hettinger | 2007-12-19 01:21:06 +0100 (Wed, 19 Dec 2007) | 1 line Beef-up tests for dict literals ........ r59561 | raymond.hettinger | 2007-12-19 01:27:21 +0100 (Wed, 19 Dec 2007) | 1 line Zap a duplicate line ........
* Remove the simple slicing API. All slicing is now done with slice objects.Thomas Wouters2007-08-301-14/+0
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* Hide list comp variables and support set comprehensionsNick Coghlan2007-04-151-0/+1
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* Implement PEP 3115 -- new metaclass syntax and semantics.Guido van Rossum2007-03-181-2/+3
| | | | | | | The compiler package hasn't been updated yet; test_compiler.py fails. Otherwise all tests seem to be passing now. There are no occurrences of __metaclass__ left in the standard library. Docs have not been updated.
* Bytes literal.Thomas Wouters2007-02-231-0/+1
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* * Remove PRINT_ITEM(_TO), PRINT_NEWLINE(_TO) opcodes.Georg Brandl2007-02-091-4/+1
| | | | | | | * Fix some docstrings and one Print -> print. * Fix test_{class,code,descrtut,dis,extcall,parser,popen,pkg,subprocess,syntax,traceback}. These were the ones that generated code with a print statement. In most remaining failing tests there's an issue with the soft space.
* Patch #1550800: make exec a function.Georg Brandl2006-09-061-1/+0
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* SF patch 1547796 by Georg Brandl -- set literals.Guido van Rossum2006-08-281-6/+7
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* Remove the UNARY_CONVERT opcode (was used for backticks). Also bumped up theBrett Cannon2006-08-251-1/+0
| | | | import MAGIC number.
* INPLACE_DIVIDE is no longer necessary (INPLACE_TRUE_DIVIDE is used).Neal Norwitz2006-03-171-1/+1
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* Get rid of last vestiges of BINARY_DIVIDE.Neal Norwitz2006-03-161-1/+1
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* PEP 343 -- the with-statement.Guido van Rossum2006-02-271-7/+2
| | | | | | | | | | | | | This was started by Mike Bland and completed by Guido (with help from Neal). This still needs a __future__ statement added; Thomas is working on Michael's patch for that aspect. There's a small amount of code cleanup and refactoring in ast.c, compile.c and ceval.c (I fixed the lltrace behavior when EXT_POP is used -- however I had to make lltrace a static global).
* Install two code generation optimizations that depend on NOP.Raymond Hettinger2004-06-211-0/+1
| | | | Reduces the cost of "not" to almost zero.
* SF patch #910929: Optimize list comprehensionsRaymond Hettinger2004-03-071-0/+1
| | | | | Add a new opcode, LIST_APPEND, and apply it to the code generation for list comprehensions. Reduces the per-loop overhead by about a third.
* Replace backticks with repr() or "%r"Walter Dörwald2004-02-121-1/+1
| | | | From SF patch #852334.
* Revert the previous enhancement to the bytecode optimizer.Raymond Hettinger2003-04-241-2/+0
| | | | The additional code complexity and new NOP opcode were not worth it.
* Improved the bytecode optimizer.Raymond Hettinger2003-04-221-0/+2
| | | | | | | | | | | | | | * Can now test for basic blocks. * Optimize inverted comparisions. * Optimize unary_not followed by a conditional jump. * Added a new opcode, NOP, to keep code size constant. * Applied NOP to previous transformations where appropriate. Note, the NOP would not be necessary if other functions were added to re-target jump addresses and update the co_lnotab mapping. That would yield slightly faster and cleaner bytecode at the expense of optimizer simplicity and of keeping it decoupled from the line-numbering structure.
* new opcode module - extract opcode definitions from dis.py - eventuallySkip Montanaro2003-02-271-0/+188
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