[issue14383] Generalize the use of _Py_IDENTIFIER in ceval.c and typeobject.c

[STINNER Victor]

New submission from STINNER Victor <victor.stinner at gmail.com>:

Attached patch adds the followig functions:
 - _PyDict_GetItemId()
 - _PyDict_SetItemId()
 - _PyType_LookupId() (private)

And it uses identifiers in ceval.c and typeobject.c where it is revelant.

I expect a small speedup.

The patch does also simplify the code: use the new identifier API instead of an explicit static keyword and call to PyUnicode_InternXXX.

I can split the patch into smaller parts if you prefer.

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components: Interpreter Core
files: identifier.patch
keywords: patch
messages: 156529
nosy: haypo, loewis, pitrou
priority: normal
severity: normal
status: open
title: Generalize the use of _Py_IDENTIFIER in ceval.c and typeobject.c
type: performance
versions: Python 3.3
Added file: http://bugs.python.org/file24987/identifier.patch

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