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* [3.7] bpo-37500: Revert commit 85ed1712e428f93408f56fc684816f9a85b0ebc0 ↵Pablo Galindo2019-07-051-11/+4
| | | | | (GH-14605) https://bugs.python.org/issue37500
* bpo-37289: Remove 'if False' handling in the peephole optimizer (GH-14099) ↵Miss Islington (bot)2019-06-151-9/+3
| | | | | | | (GH-14111) (cherry picked from commit 7a68f8c28bb78d957555a5001dac4df6345434a0) Co-authored-by: Pablo Galindo <Pablogsal@gmail.com>
* [3.7] bpo-37269: Correctly optimise conditionals with constant booleans ↵Pablo Galindo2019-06-141-0/+5
| | | | | | | | | | | | | (GH-14071) (GH-14073) Fix a regression introduced by af8646c8054d0f4180a2013383039b6a472f9698 that was causing code of the form: if True and False: do_something() to be optimized incorrectly, eliminating the block.. (cherry picked from commit 05f831865545b08c9a21cfb7773af58b76ec64cb) Co-authored-by: Pablo Galindo <Pablogsal@gmail.com>
* bpo-1875: Raise SyntaxError in invalid blocks that will be optimised away ↵Miss Islington (bot)2019-05-171-4/+12
| | | | | | | | | | (GH-13332) Move the check for dead conditionals (if 0) to the peephole optimizer and make sure that the code block is still compiled to report any existing syntax errors within. (cherry picked from commit af8646c8054d0f4180a2013383039b6a472f9698) Co-authored-by: Pablo Galindo <Pablogsal@gmail.com>
* [3.7] bpo-9566: Fix compiler warnings on Windows (GH-12920)Victor Stinner2019-04-231-21/+47
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * bpo-9566: Fix compiler warnings in gcmodule.c (GH-11010) Change PyDTrace_GC_DONE() argument type from int to Py_ssize_t. (cherry picked from commit edad38e3e05586ba58291f47756eb3fb808f5577) * bpo-30465: Fix C downcast warning on Windows in ast.c (#6593) ast.c: fstring_fix_node_location() downcasts a pointer difference to a C int. Replace int with Py_ssize_t to fix the compiler warning. (cherry picked from commit fb7e7992beec7f76cc2db77ab6ce1e86446bfccf) * bpo-9566: Fix compiler warnings in peephole.c (GH-10652) (cherry picked from commit 028f0ef4f3111d2b3fc5b971642e337ba7990873) * bpo-27645, sqlite: Fix integer overflow on sleep (#6594) Use the _PyTime_t type and round away from zero (ROUND_UP, _PyTime_ROUND_TIMEOUT) the sleep duration, when converting a Python object to seconds and then to milliseconds. Raise an OverflowError in case of overflow. Previously the (int)double conversion rounded towards zero (ROUND_DOWN). (cherry picked from commit ca405017d5e776a2e3d9291236e62d2e09489dd2)
* bpo-35193: Fix an off by one error in the RETURN_VALUE case. (GH-10418)Miss Islington (bot)2018-11-091-10/+12
| | | | | | | | | | | | | | | Fix an off by one error in the peephole optimizer when checking for unreachable code beyond a return. Do a bounds check within find_op so it can return before going past the end as a safety measure. https://github.com/python/cpython/commit/7db3c488335168993689ddae5914a28e16188447GH-diff-a33329ae6ae0bb295d742f0caf93c137 introduced this off by one error while fixing another one nearby. This bug was shipped in all Python 3.6 and 3.7 releases. The included unittest won't fail unless you do a clang msan build. (cherry picked from commit 49fa4a9f1ef387e16596f271414c855339eadf09) Co-authored-by: Gregory P. Smith <greg@krypto.org>
* bpo-29469: peephole: Remove const_stack (GH-4879)INADA Naoki2017-12-181-81/+21
| | | | | | | | | | Constant folding was moved to AST optimizer. But compiler may emit LOAD_CONSTs + BUILD_TUPLE. For example, default arguments can be constant tuple if all arguments are constant. This commit makes peephole's tuple folding simple. It doesn't support nested tuples because nested tuples are folded by AST optimizer already.
* bpo-29469: Optimize literal lists and sets iterating on the AST level. (#4866)Serhiy Storchaka2017-12-141-24/+3
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* bpo-29469: Remove unnecessary peephole optimizer (GH-4863)INADA Naoki2017-12-141-15/+0
| | | | | Conversions like `not a is b -> a is not b` are implemented in AST optimizer in previous commit (7ea143a). So this commit removes them from peephole optimizer.
* bpo-29469: Move constant folding to AST optimizer (GH-2858)INADA Naoki2017-12-141-193/+0
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* bpo-30501: Make the compiler producing optimized code for condition ↵Serhiy Storchaka2017-06-111-12/+2
| | | | expressions. (#1851)
* Issue #28517: Fixed of-by-one error in the peephole optimizer that causedSerhiy Storchaka2016-10-251-2/+2
| | | | keeping unreachable code.
* Fixed refactoring bug in dd046963bd42 (issue27129).Serhiy Storchaka2016-09-111-1/+1
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* Issue #27129: Replaced wordcode related magic constants with macros.Serhiy Storchaka2016-09-111-105/+112
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* Re-linewrap commentsRaymond Hettinger2016-08-081-13/+8
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* Issue #27076: Merge spelling from 3.5Martin Panter2016-05-261-1/+1
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| * Issue #27076: Doc, comment and tests spelling fixesMartin Panter2016-05-261-1/+1
| | | | | | | | Most fixes to Doc/ and Lib/ directories by Ville Skyttä.
* | Issue #26647: Python interpreter now uses 16-bit wordcode instead of bytecode.Serhiy Storchaka2016-05-241-263/+313
| | | | | | | | Patch by Demur Rumed.
* | Issue #22570: Renamed Py_SETREF to Py_XSETREF.Serhiy Storchaka2016-04-061-1/+1
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* | co_lnotab supports negative line number deltaVictor Stinner2016-01-201-23/+28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Issue #26107: The format of the co_lnotab attribute of code objects changes to support negative line number delta. Changes: * assemble_lnotab(): if line number delta is less than -128 or greater than 127, emit multiple (offset_delta, lineno_delta) in co_lnotab * update functions decoding co_lnotab to use signed 8-bit integers - dis.findlinestarts() - PyCode_Addr2Line() - _PyCode_CheckLineNumber() - frame_setlineno() * update lnotab_notes.txt * increase importlib MAGIC_NUMBER to 3361 * document the change in What's New in Python 3.6 * cleanup also PyCode_Optimize() to use better variable names
* | Issue #20440: Cleaning up the code by using Py_SETREF.Serhiy Storchaka2016-01-051-3/+1
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* PEP 0492 -- Coroutines with async and await syntax. Issue #24017.Yury Selivanov2015-05-121-0/+3
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* Issue #23450: Silenced compiler warnings and added asserts in peephole ↵Serhiy Storchaka2015-02-161-3/+9
| | | | optimizer.
* Issue #23446: Use PyMem_New instead of PyMem_Malloc to avoid possible integerSerhiy Storchaka2015-02-161-2/+2
| | | | overflows. Added few missed PyErr_NoMemory().
* Issue #19437: Fix fold_unaryops_on_constants() of the peephole optimizer, clearVictor Stinner2013-11-141-0/+1
| | | | the exception when PyList_Append() fails
* Issue #18408: Fix PyCode_Optimize(): raise a MemoryError on memory allocationVictor Stinner2013-07-081-2/+6
| | | | failure.
* create NameConstant AST class for None, True, and False literals (closes #16619)Benjamin Peterson2012-12-061-46/+0
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* Implement PEP 393.Martin v. Löwis2011-09-281-18/+0
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* Issue #13002: Fix Visual Studio warning (not enough actual parameters).Stefan Krah2011-09-211-1/+1
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* #5057: Merge with 3.2.Ezio Melotti2011-04-151-0/+18
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| * #5057: Merge with 3.1.Ezio Melotti2011-04-151-0/+18
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| | * Issue #5057: fix a bug in the peepholer that led to non-portable pyc files ↵Ezio Melotti2011-04-151-0/+18
| | | | | | | | | | | | between narrow and wide builds while optimizing BINARY_SUBSCR on non-BMP chars (e.g. "\U00012345"[0]).
| | * Recorded merge of revisions 81032 via svnmerge fromAntoine Pitrou2010-05-091-598/+598
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | svn+ssh://pythondev@svn.python.org/python/branches/py3k ................ r81032 | antoine.pitrou | 2010-05-09 17:52:27 +0200 (dim., 09 mai 2010) | 9 lines Recorded merge of revisions 81029 via svnmerge from svn+ssh://pythondev@svn.python.org/python/trunk ........ r81029 | antoine.pitrou | 2010-05-09 16:46:46 +0200 (dim., 09 mai 2010) | 3 lines Untabify C files. Will watch buildbots. ........ ................
| | * Merged revisions 74126,74130-74131,74149,74155,74157,74180-74183,74398 via ↵Georg Brandl2009-08-131-6/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | svnmerge from svn+ssh://svn.python.org/python/branches/py3k ................ r74126 | alexandre.vassalotti | 2009-07-21 02:39:03 +0200 (Di, 21 Jul 2009) | 14 lines Merged revisions 73871 via svnmerge from svn+ssh://pythondev@svn.python.org/python/trunk ........ r73871 | alexandre.vassalotti | 2009-07-06 22:17:30 -0400 (Mon, 06 Jul 2009) | 7 lines Grow the allocated buffer in PyUnicode_EncodeUTF7 to avoid buffer overrun. Without this change, test_unicode.UnicodeTest.test_codecs_utf7 crashes in debug mode. What happens is the unicode string u'\U000abcde' with a length of 1 encodes to the string '+2m/c3g-' of length 8. Since only 5 bytes is reserved in the buffer, a buffer overrun occurs. ........ ................ r74130 | alexandre.vassalotti | 2009-07-21 02:57:50 +0200 (Di, 21 Jul 2009) | 2 lines Add ignore rule for the Doc/tools/jinga2/ directory. ................ r74131 | alexandre.vassalotti | 2009-07-21 04:51:58 +0200 (Di, 21 Jul 2009) | 13 lines Merged revisions 73683,73786 via svnmerge from svn+ssh://pythondev@svn.python.org/python/trunk ........ r73683 | georg.brandl | 2009-06-29 10:44:49 -0400 (Mon, 29 Jun 2009) | 1 line Fix error handling in PyCode_Optimize, by Alexander Schremmer at EuroPython sprint. ........ r73786 | benjamin.peterson | 2009-07-02 18:56:16 -0400 (Thu, 02 Jul 2009) | 1 line condense with assertRaises ........ ................ r74149 | ezio.melotti | 2009-07-21 22:37:52 +0200 (Di, 21 Jul 2009) | 9 lines Merged revisions 74148 via svnmerge from svn+ssh://pythondev@svn.python.org/python/trunk ........ r74148 | ezio.melotti | 2009-07-21 23:18:27 +0300 (Tue, 21 Jul 2009) | 1 line #6536 fixed typo ........ ................ r74155 | alexandre.vassalotti | 2009-07-22 04:24:49 +0200 (Mi, 22 Jul 2009) | 2 lines Issue #6242: Fix deallocator of io.StringIO and io.BytesIO. ................ r74157 | alexandre.vassalotti | 2009-07-22 05:07:33 +0200 (Mi, 22 Jul 2009) | 2 lines Issue #6241: Better type checking for the arguments of io.StringIO. ................ r74180 | ezio.melotti | 2009-07-22 23:17:14 +0200 (Mi, 22 Jul 2009) | 9 lines Merged revisions 74179 via svnmerge from svn+ssh://pythondev@svn.python.org/python/trunk ........ r74179 | ezio.melotti | 2009-07-23 00:08:49 +0300 (Thu, 23 Jul 2009) | 1 line #6423 has_key -> in ........ ................ r74181 | alexandre.vassalotti | 2009-07-22 23:27:53 +0200 (Mi, 22 Jul 2009) | 6 lines Clean up test_curses. By using __stdout__ directly, test_curses caused regrtest.py to duplicate the output of some test results. ................ r74182 | alexandre.vassalotti | 2009-07-22 23:29:01 +0200 (Mi, 22 Jul 2009) | 2 lines Use assertGreater instead of assertTrue(x > y). ................ r74183 | alexandre.vassalotti | 2009-07-23 01:27:17 +0200 (Do, 23 Jul 2009) | 4 lines Specialize assertTrue checks when possible. We should get slightly more helpful failure messages with this change. ................ r74398 | georg.brandl | 2009-08-13 11:16:39 +0200 (Do, 13 Aug 2009) | 1 line #6694: fix old function names. ................
| * | Issue 11510: Fix BUILD_SET optimizer bug.Raymond Hettinger2011-03-151-1/+2
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* | | Issue #11244: Remove outdated peepholer check that was preventing the ↵Mark Dickinson2011-03-231-4/+2
| | | | | | | | | | | | peepholer from folding -0 and -0.0. Thanks Eugene Toder for the patch.
* | | Issue 11510: Fix BUILD_SET optimizer bug.Raymond Hettinger2011-03-151-1/+2
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* | | Issue #11244: The peephole optimizer is now able to constant-foldAntoine Pitrou2011-03-111-47/+120
|/ / | | | | | | | | arbitrarily complex expressions. This also fixes a 3.2 regression where operations involving negative numbers were not constant-folded.
* | Remove redundant includes of headers that are already included by Python.h.Georg Brandl2010-11-301-2/+0
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* | Issue 8403: Don't mask KeyboardInterrupt during peephole operation.Raymond Hettinger2010-08-221-4/+8
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* | Recorded merge of revisions 81029 via svnmerge fromAntoine Pitrou2010-05-091-616/+616
| | | | | | | | | | | | | | | | | | | | svn+ssh://pythondev@svn.python.org/python/trunk ........ r81029 | antoine.pitrou | 2010-05-09 16:46:46 +0200 (dim., 09 mai 2010) | 3 lines Untabify C files. Will watch buildbots. ........
* | Issue #6690: Optimize the bytecode for expressions such as `x in {1, 2, 3}`,Antoine Pitrou2010-01-161-4/+16
| | | | | | | | | | | | | | | | | | where the right hand operand is a set of constants, by turning the set into a frozenset and pre-building it as a constant. The comparison operation is made against the constant instead of building a new set each time it is executed (a similar optimization already existed which turned a list of constants into a pre-built tuple). Patch and additional tests by Dave Malcolm.
* | Peephole constant folding had missed UNARY_POSITIVE.Raymond Hettinger2009-10-221-0/+4
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* | Merged revisions 73683,73786 via svnmerge fromAlexandre Vassalotti2009-07-211-6/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | svn+ssh://pythondev@svn.python.org/python/trunk ........ r73683 | georg.brandl | 2009-06-29 10:44:49 -0400 (Mon, 29 Jun 2009) | 1 line Fix error handling in PyCode_Optimize, by Alexander Schremmer at EuroPython sprint. ........ r73786 | benjamin.peterson | 2009-07-02 18:56:16 -0400 (Thu, 02 Jul 2009) | 1 line condense with assertRaises ........
* | Merged revisions 72912,72920,72940 via svnmerge fromBenjamin Peterson2009-06-281-0/+3
|/ | | | | | | | | | | | | | | | | | | | | 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 ........
* Fix 2 oversights from r69961.Jeffrey Yasskin2009-02-281-3/+5
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* http://bugs.python.org/issue4715Jeffrey Yasskin2009-02-251-44/+58
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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
* Issue 2260: Small peephole optimization -- eliminate unnecessary POP_TOP ↵Raymond Hettinger2008-11-181-0/+10
| | | | /JUMP_FORWARD 1 pairs.
* Rename PyUnicode_AsString -> _PyUnicode_AsString andMarc-André Lemburg2008-08-071-1/+1
| | | | | | | | | PyUnicode_AsStringAndSize -> _PyUnicode_AsStringAndSize to mark them for interpreter internal use only. We'll have to rework these APIs or create new ones for the purpose of accessing the UTF-8 representation of Unicode objects for 3.1.
* Renamed PyString to PyBytesChristian Heimes2008-05-261-7/+7
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