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Victor Stinner 516b98161a Optimize slots: avoid temporary PyMethodObject 
Issue #29507: Optimize slots calling Python methods. For Python methods, get
the unbound Python function and prepend arguments with self, rather than
calling the descriptor which creates a temporary PyMethodObject.

Add a new _PyObject_FastCall_Prepend() function used to call the unbound Python
method with self. It avoids the creation of a temporary tuple to pass
positional arguments.

Avoiding temporary PyMethodObject and avoiding temporary tuple makes Python
slots up to 1.46x faster. Microbenchmark on a __getitem__() method implemented
in Python:

Median +- std dev: 121 ns +- 5 ns -> 82.8 ns +- 1.0 ns: 1.46x faster (-31%)

Co-Authored-by: INADA Naoki <songofacandy@gmail.com>
 		2017-02-09 22:53:47 +01:00
..
Python-ast.h Issue #28008: Implement PEP 530 -- asynchronous comprehensions. 2016-09-09 10:36:01 -07:00
Python.h issue27186: add C version of os.fspath(); patch by Jelle Zijlstra 2016-06-04 12:06:26 -07:00
abstract.h Optimize slots: avoid temporary PyMethodObject 2017-02-09 22:53:47 +01:00
accu.h Issue #14387 : undefine 'small' so that it doesn't clash with Windows headers. 2012-03-22 23:10:37 +00:00
asdl.h Add ast.Constant 2016-01-26 00:40:57 +01:00
ast.h Close #11619: The parser and the import machinery do not encode Unicode 2013-08-26 22:28:21 +02:00
bitset.h
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bltinmodule.h
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boolobject.h
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bytearrayobject.h fix comment 2013-10-05 16:28:04 -04:00
bytes_methods.h Issue #26765: Moved common code and docstrings for bytes and bytearray methods 2016-05-04 22:23:26 +03:00
bytesobject.h Issue #29058: All stable API extensions added after Python 3.2 are now 2016-12-27 14:57:39 +02:00
cellobject.h
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ceval.h Uniformize argument names of "call" functions 2016-12-06 16:27:24 +01:00
classobject.h
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code.h Issue #18896: Python function can now have more than 255 parameters. 2016-12-16 19:19:02 +02:00
codecs.h Issue #29058: All stable API extensions added after Python 3.2 are now 2016-12-27 14:57:39 +02:00
compile.h PEP 479: Change StopIteration handling inside generators. 2015-05-09 11:44:30 -04:00
complexobject.h Issue #21803: remove macro indirections in complexobject.h 2014-07-07 18:49:30 -04:00
datetime.h Closes issue #24773: Implement PEP 495 (Local Time Disambiguation). 2016-07-22 18:47:04 -04:00
descrobject.h Issue #29263: LOAD_METHOD support for C methods 2017-02-03 07:43:03 +09:00
dictobject.h Issue #28969: Fixed race condition in C implementation of functools.lru_cache. 2017-01-12 19:42:20 +02:00
dtoa.h Issue #14521: Make result of float('nan') and float('-nan') more consistent across platforms. Further, don't rely on Py_HUGE_VAL for float('inf'). 2012-04-29 15:31:56 +01:00
dynamic_annotations.h fix instances of consecutive articles (closes #23221) 2015-01-13 09:17:24 -05:00
enumobject.h
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errcode.h Issue #12705: Raise SyntaxError when compiling multiple statements as single interactive statement 2012-01-19 01:08:41 -06:00
eval.h
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fileobject.h Issue #29058: All stable API extensions added after Python 3.2 are now 2016-12-27 14:57:39 +02:00
fileutils.h Issue #29058: All stable API extensions added after Python 3.2 are now 2016-12-27 14:57:39 +02:00
floatobject.h Issue #11734: Add support for IEEE 754 half-precision floats to the struct module. Original patch by Eli Stevens. 2016-09-03 17:21:29 +01:00
frameobject.h Issue #29049: Call _PyObject_GC_TRACK() lazily when calling Python function. 2016-12-24 20:19:08 +09:00
funcobject.h Add _PyObject_FastCallKeywords() 2016-09-09 12:36:44 -07:00
genobject.h Issue #23996: Added _PyGen_SetStopIterationValue for safe raising 2016-11-06 18:47:03 +02:00
graminit.h Issue #27985: Implement PEP 526 -- Syntax for Variable Annotations. 2016-09-08 20:50:03 -07:00
grammar.h properly free memory in pgen 2016-09-18 18:00:25 -07:00
import.h Issue #29058: All stable API extensions added after Python 3.2 are now 2016-12-27 14:57:39 +02:00
intrcheck.h Issue #26900: Excluded underscored names and other private API from limited API. 2016-09-11 11:03:14 +03:00
iterobject.h Rename _PyIter_GetBuiltin to _PyObject_GetBuiltin, and do not include it in the stable ABI. 2012-04-05 00:04:20 +02:00
listobject.h Issue #26778: Fixed "a/an/and" typos in code comment and documentation. 2016-04-17 08:32:47 +03:00
longintrepr.h replace Python aliases for standard integer types with the standard integer types (#17884) 2016-09-06 13:24:00 -07:00
longobject.h Issue #19569: Compiler warnings are now emitted if use most of deprecated 2016-11-20 12:16:46 +02:00
marshal.h Issue #1772673: The type of `char*` arguments now changed to `const char*`. 2013-10-19 21:03:34 +03:00
memoryobject.h Issue #29058: All stable API extensions added after Python 3.2 are now 2016-12-27 14:57:39 +02:00
metagrammar.h
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methodobject.h Issue #29263: LOAD_METHOD support for C methods 2017-02-03 07:43:03 +09:00
modsupport.h Issue #29460: _PyArg_NoKeywords(), _PyArg_NoStackKeywords() and 2017-02-06 10:41:46 +02:00
moduleobject.h Issue #29058: All stable API extensions added after Python 3.2 are now 2016-12-27 15:04:59 +02:00
namespaceobject.h Issue #26900: Excluded underscored names and other private API from limited API. 2016-09-11 11:03:14 +03:00
node.h Removed trailing tabs. 2015-03-21 09:25:53 +02:00
object.h Issue #29058: All stable API extensions added after Python 3.2 are now 2016-12-27 14:57:39 +02:00
objimpl.h Issue #29058: All stable API extensions added after Python 3.2 are now 2016-12-27 14:57:39 +02:00
odictobject.h Issue #29058: All stable API extensions added after Python 3.2 are now 2016-12-27 15:04:59 +02:00
opcode.h Issue #26110: Add LOAD_METHOD/CALL_METHOD opcodes. 2016-12-13 19:03:51 -05:00
osdefs.h Issue #22591: Drop support of MS-DOS 2014-10-10 11:55:41 +02:00
osmodule.h Issue #29058: All stable API extensions added after Python 3.2 are now 2016-12-27 14:57:39 +02:00
parsetok.h Issue #1772673: The type of `char*` arguments now changed to `const char*`. 2013-10-19 21:03:34 +03:00
patchlevel.h Fix incorrect patchlevel information for 3.5.3+. 2017-01-19 18:36:23 -08:00
pgen.h
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pgenheaders.h prefix freegrammar (closes #28413) 2016-10-10 23:21:02 -07:00
py_curses.h Issue #28999: Use Py_RETURN_NONE, Py_RETURN_TRUE and Py_RETURN_FALSE wherever 2017-01-23 10:23:58 +02:00
pyarena.h
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pyatomic.h replace Py_(u)intptr_t with the c99 standard types 2016-09-06 13:47:26 -07:00
pycapsule.h
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pyctype.h Try to fix linking failures under Windows 2011-10-04 14:43:47 +02:00
pydebug.h Issue #1602: Windows console doesn't input or print Unicode (PEP 528) 2016-08-30 21:22:36 -07:00
pydtrace.d DTrace support: function calls, GC activity, line execution 2016-09-09 17:37:37 -07:00
pydtrace.h mark dtrace stubs as static inline; remove stubs 2016-10-20 22:37:00 -07:00
pyerrors.h Issue #29058: All stable API extensions added after Python 3.2 are now 2016-12-27 15:04:59 +02:00
pyexpat.h Issue #13612: handle unknown encodings without a buffer overflow. 2013-05-25 05:25:48 -07:00
pyfpe.h remove trailing whitespace 2016-09-19 22:16:36 -07:00
pygetopt.h Issue #26900: Excluded underscored names and other private API from limited API. 2016-09-11 11:03:14 +03:00
pyhash.h replace Python aliases for standard integer types with the standard integer types (#17884) 2016-09-06 13:24:00 -07:00
pylifecycle.h Issue #26900: Excluded underscored names and other private API from limited API. 2016-09-11 11:03:14 +03:00
pymacconfig.h Minor spelling fixes 2016-08-20 08:03:06 +00:00
pymacro.h Add Py_MEMBER_SIZE macro 2016-09-08 09:33:56 -07:00
pymath.h Issue #27895: Spelling fixes (Contributed by Ville Skyttä). 2016-09-07 12:03:06 +00:00
pymem.h Issue #29058: All stable API extensions added after Python 3.2 are now 2016-12-27 14:57:39 +02:00
pyport.h Disable _PyStack_AsTuple() inlining 2017-01-11 01:07:03 +01:00
pystate.h Issue #26900: Excluded underscored names and other private API from limited API. 2016-09-11 11:03:14 +03:00
pystrcmp.h
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pystrhex.h Issue #26900: Excluded underscored names and other private API from limited API. 2016-09-11 11:03:14 +03:00
pystrtod.h Issue #26331: Implement the parsing part of PEP 515. 2016-09-09 14:57:09 -07:00
pythonrun.h Issue #29058: All stable API extensions added after Python 3.2 are now 2016-12-27 14:57:39 +02:00
pythread.h Issue #29058: All stable API extensions added after Python 3.2 are now 2016-12-27 14:57:39 +02:00
pytime.h Issue #28148: Stop using localtime() and gmtime() in the time module. 2016-09-28 17:31:35 -04:00
rangeobject.h
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setobject.h Clarify comments on setentry invariants. 2015-08-01 15:21:41 -07:00
sliceobject.h Issue #27867: Silenced may-be-used-uninitialized warnings after 2017-02-04 11:08:04 +02:00
structmember.h Issue #28761: The fields name and doc of structures PyMemberDef, PyGetSetDef, 2016-11-22 07:58:08 +02:00
structseq.h Issue #28761: The fields name and doc of structures PyMemberDef, PyGetSetDef, 2016-11-22 07:58:08 +02:00
symtable.h Issue #28003: Implement PEP 525 -- Asynchronous Generators. 2016-09-08 22:01:51 -07:00
sysmodule.h Issue #26900: Excluded underscored names and other private API from limited API. 2016-09-11 11:03:14 +03:00
token.h PEP 0492 -- Coroutines with async and await syntax. Issue #24017. 2015-05-11 22:57:16 -04:00
traceback.h Issue #26900: Excluded underscored names and other private API from limited API. 2016-09-11 11:03:14 +03:00
tupleobject.h Issue #14785: Add sys._debugmallocstats() to help debug low-level memory allocation issues 2012-06-22 14:55:41 -04:00
typeslots.h Issue 24365: Conditionalize PEP 489 additions to the stable ABI 2015-06-02 19:06:47 -04:00
ucnhash.h Removed unintentional trailing spaces in non-external and non-generated C files. 2015-03-18 21:53:15 +02:00
unicodeobject.h Issue #28769: The result of PyUnicode_AsUTF8AndSize() and PyUnicode_AsUTF8() 2017-01-22 23:07:07 +02:00
warnings.h Issue #29058: All stable API extensions added after Python 3.2 are now 2016-12-27 14:57:39 +02:00
weakrefobject.h Closes #13867: remove untrue comment about PyWeakref_Check(). 2013-10-08 19:50:26 +02:00