[pypy-commit] pypy default: document branch

[arigo]

Author: Armin Rigo <arigo at tunes.org>
Branch: 
Changeset: r84728:c87751dcf65b
Date: 2016-05-27 14:56 +0200
http://bitbucket.org/pypy/pypy/changeset/c87751dcf65b/

Log:	document branch

diff --git a/pypy/doc/whatsnew-head.rst b/pypy/doc/whatsnew-head.rst
--- a/pypy/doc/whatsnew-head.rst
+++ b/pypy/doc/whatsnew-head.rst
@@ -105,3 +105,11 @@
 Fix some warnings when compiling CPython C extension modules
 
 .. branch: syntax_fix
+
+.. branch: remove-raisingops
+
+Remove most of the _ovf, _zer and _val operations from RPython.  Kills
+quite some code internally, and allows the JIT to do better
+optimizations: for example, app-level code like ``x / 2`` or ``x % 2``
+can now be turned into ``x >> 1`` or ``x & 1``, even if x is possibly
+negative.