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| author | Raymond Hettinger <python@rcn.com> | 2004-03-07 07:31:06 (GMT) |
|---|---|---|
| committer | Raymond Hettinger <python@rcn.com> | 2004-03-07 07:31:06 (GMT) |
| commit | dd80f762650f42f5f9ae820d9f55b21ed6f33bc0 (patch) | |
| tree | f7e7e6545b9896601dd13a1c07e409fef88ede2b /Misc/NEWS | |
| parent | bff63f034366b0cf0442e9db5e5674751beca25a (diff) | |
| download | cpython-dd80f762650f42f5f9ae820d9f55b21ed6f33bc0.zip cpython-dd80f762650f42f5f9ae820d9f55b21ed6f33bc0.tar.gz cpython-dd80f762650f42f5f9ae820d9f55b21ed6f33bc0.tar.bz2 | |
SF patch #910929: Optimize list comprehensions
Add a new opcode, LIST_APPEND, and apply it to the code generation for
list comprehensions. Reduces the per-loop overhead by about a third.
Diffstat (limited to 'Misc/NEWS')
| -rw-r--r-- | Misc/NEWS | 4 |
1 files changed, 4 insertions, 0 deletions
@@ -12,6 +12,10 @@ What's New in Python 2.4 alpha 1? Core and builtins ----------------- +- Implemented a newcode opcode, LIST_APPEND, that simplifies + the generated bytecode for list comprehensions and further + improves their performance (about 35%). + - Implemented rich comparisons for floats, which seems to make comparisons involving NaNs somewhat less surprising when the underlying C compiler actually implements C99 semantics. |