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35 Commits

Author SHA1 Message Date
Victor Stinner
c82729e44f Issue #19437: Fix fold_unaryops_on_constants() of the peephole optimizer, clear 
the exception when PyList_Append() fails
 2013-11-14 01:21:00 +01:00
Victor Stinner
e0af3a802a Issue #18408: Fix PyCode_Optimize(): raise a MemoryError on memory allocation 
failure.
 2013-07-09 00:32:04 +02:00
Benjamin Peterson
442f20996d create NameConstant AST class for None, True, and False literals (closes #16619) 2012-12-06 17:41:04 -05:00
Martin v. Löwis
d63a3b8beb Implement PEP 393. 2011-09-28 07:41:54 +02:00
Stefan Krah
472d280d8b Issue #13002: Fix Visual Studio warning (not enough actual parameters). 2011-09-21 19:08:39 +02:00
Ezio Melotti
e1adeeb7fd #5057: Merge with 3.2. 2011-04-15 16:52:35 +03:00
Ezio Melotti
71e84a6e27 #5057: Merge with 3.1. 2011-04-15 16:50:41 +03:00
Ezio Melotti
2df6a93916 Issue #5057: fix a bug in the peepholer that led to non-portable pyc files between narrow and wide builds while optimizing BINARY_SUBSCR on non-BMP chars (e.g. "\U00012345"[0]). 2011-04-15 16:38:34 +03:00
Mark Dickinson
7c9e803284 Issue #11244: Remove outdated peepholer check that was preventing the peepholer from folding -0 and -0.0. Thanks Eugene Toder for the patch. 2011-03-23 17:59:37 +00:00
Raymond Hettinger
29dcaad6eb Issue 11510: Fix BUILD_SET optimizer bug. 2011-03-15 14:50:16 -07:00
Raymond Hettinger
0661e91fed Issue 11510: Fix BUILD_SET optimizer bug. 2011-03-15 15:03:36 -07:00
Antoine Pitrou
17b880a5d6 Issue #11244: The peephole optimizer is now able to constant-fold 
arbitrarily complex expressions.  This also fixes a 3.2 regression where
operations involving negative numbers were not constant-folded.
 2011-03-11 17:27:02 +01:00
Georg Brandl
e5b99f0fb3 Remove redundant includes of headers that are already included by Python.h. 2010-11-30 09:41:01 +00:00
Raymond Hettinger
819a064556 Issue 8403: Don't mask KeyboardInterrupt during peephole operation. 2010-08-22 08:39:49 +00:00
Antoine Pitrou
7f14f0d8a0 Recorded merge of revisions 81032 via svnmerge from 
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.
  ........
................
 2010-05-09 16:14:21 +00:00
Antoine Pitrou
f95a1b3c53 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.
........
 2010-05-09 15:52:27 +00:00
Antoine Pitrou
b7fbcd396f Issue #6690: Optimize the bytecode for expressions such as x in {1, 2, 3}, 
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.
 2010-01-16 18:37:38 +00:00
Raymond Hettinger
af7adad51d Peephole constant folding had missed UNARY_POSITIVE. 2009-10-22 11:22:50 +00:00
Georg Brandl
194da4a7da Merged revisions 74126,74130-74131,74149,74155,74157,74180-74183,74398 via 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
  ........
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  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.
................
 2009-08-13 09:34:05 +00:00
Alexandre Vassalotti
6f82818652 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
........
 2009-07-21 02:51:58 +00:00
Benjamin Peterson
876b2f286b Merged revisions 72912,72920,72940 via svnmerge from 
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
........
 2009-06-28 03:18:59 +00:00
Jeffrey Yasskin
4dd40525e6 Fix 2 oversights from r69961. 2009-02-28 19:49:43 +00:00
Jeffrey Yasskin
9de7ec7868 http://bugs.python.org/issue4715 
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
 2009-02-25 02:25:04 +00:00
Raymond Hettinger
e56131b60e Issue 2260: Small peephole optimization -- eliminate unnecessary POP_TOP /JUMP_FORWARD 1 pairs. 2008-11-18 00:07:10 +00:00
Marc-André Lemburg
4cc0f24857 Rename PyUnicode_AsString -> _PyUnicode_AsString and 
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.
 2008-08-07 18:54:33 +00:00