svn+ssh://pythondev@svn.python.org/python/trunk
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r69811 | collin.winter | 2009-02-20 13:30:41 -0600 (Fri, 20 Feb 2009) | 2 lines
Issue 5176: special-case string formatting in BINARY_MODULO implementation. This shows a modest (1-3%) speed-up in templating systems, for example.
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r69947 | jeffrey.yasskin | 2009-02-24 16:48:34 -0600 (Tue, 24 Feb 2009) | 3 lines
Tools/scripts/analyze_dxp.py, a module with some helper functions to
analyze the output of sys.getdxp().
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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Furthermore, the old jump opcodes (JUMP_IF_FALSE, JUMP_IF_TRUE) have been
replaced by two new opcodes: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
svn+ssh://pythondev@svn.python.org/python/trunk
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r69459 | mark.dickinson | 2009-02-09 14:18:43 +0000 (Mon, 09 Feb 2009) | 3 lines
Issue #4575: fix Py_IS_INFINITY macro to work correctly on x87 FPUs.
It now forces its argument to double before testing for infinity.
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svn+ssh://pythondev@svn.python.org/python/trunk
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r69331 | eric.smith | 2009-02-05 19:48:26 -0500 (Thu, 05 Feb 2009) | 2 lines
Implement issue #4285, convert sys.version_info to a named
tuple. Patch by Ross Light.
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svn+ssh://pythondev@svn.python.org/python/trunk
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r69038 | mark.hammond | 2009-01-28 10:12:23 +1100 (Wed, 28 Jan 2009) | 3 lines
On Windows, use the Python 'Activation Context' when loading extensions
to avoid problems loading the CRT from a private assembly. Via bug 4566.
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on compilers that support it (notably: gcc, SunPro, icc), the bytecode
evaluation loop is compiled with a new dispatch mechanism which gives
speedups of up to 20%, depending on the system, on various benchmarks.
svn+ssh://pythondev@svn.python.org/python/trunk
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r68633 | thomas.heller | 2009-01-16 12:53:44 -0600 (Fri, 16 Jan 2009) | 3 lines
Change an example in the docs to avoid a mistake when the code is copy
pasted and changed afterwards.
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r68648 | benjamin.peterson | 2009-01-16 22:28:57 -0600 (Fri, 16 Jan 2009) | 1 line
use enumerate
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r68667 | amaury.forgeotdarc | 2009-01-17 14:18:59 -0600 (Sat, 17 Jan 2009) | 3 lines
#4077: No need to append \n when calling Py_FatalError
+ fix a declaration to make it match the one in pythonrun.h
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r68706 | benjamin.peterson | 2009-01-17 19:28:46 -0600 (Sat, 17 Jan 2009) | 1 line
fix grammar
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r68718 | georg.brandl | 2009-01-18 04:42:35 -0600 (Sun, 18 Jan 2009) | 1 line
#4976: union() and intersection() take multiple args, but talk about "the other".
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r68720 | georg.brandl | 2009-01-18 04:45:22 -0600 (Sun, 18 Jan 2009) | 1 line
#4974: fix redundant mention of lists and tuples.
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r68721 | georg.brandl | 2009-01-18 04:48:16 -0600 (Sun, 18 Jan 2009) | 1 line
#4914: trunc is in math.
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r68724 | georg.brandl | 2009-01-18 07:24:10 -0600 (Sun, 18 Jan 2009) | 1 line
#4979: correct result range for some random functions.
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r68725 | georg.brandl | 2009-01-18 07:47:26 -0600 (Sun, 18 Jan 2009) | 1 line
#4857: fix augmented assignment target spec.
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r68726 | georg.brandl | 2009-01-18 08:41:52 -0600 (Sun, 18 Jan 2009) | 1 line
#4923: clarify what was added.
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r68727 | georg.brandl | 2009-01-18 12:25:30 -0600 (Sun, 18 Jan 2009) | 1 line
#4986: augassigns are not expressions.
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r68739 | benjamin.peterson | 2009-01-18 15:11:38 -0600 (Sun, 18 Jan 2009) | 1 line
fix test that wasn't working as expected #4990
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svn+ssh://pythondev@svn.python.org/python/trunk
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r68560 | amaury.forgeotdarc | 2009-01-13 00:36:55 +0100 (mar., 13 janv. 2009) | 6 lines
#3720: Interpreter crashes when an evil iterator removes its own next function.
Now the slot is filled with a function that always raises.
Will not backport: extensions compiled with 2.6.x would not run on 2.6.0.
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svn+ssh://pythondev@svn.python.org/python/trunk
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r68455 | kristjan.jonsson | 2009-01-09 21:03:27 +0100 (Fr, 09 Jan 2009) | 1 line
Issue 3582. Improved thread support and TLS for Windows
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r68476 | kristjan.jonsson | 2009-01-10 13:14:31 +0100 (Sa, 10 Jan 2009) | 1 line
Issue 4906: Preserve windows error state across PyThread_get_key_value
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r68542 | martin.v.loewis | 2009-01-12 09:11:24 +0100 (Mo, 12 Jan 2009) | 2 lines
Issue #4893: Use NT threading on CE.
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