[pypy-svn] pypy jit-short-preamble: assume pure functions dont have any sideffects

[hakanardo]

Author: Hakan Ardo <hakan at debian.org>
Branch: jit-short-preamble
Changeset: r40531:c45dc5d55121
Date: 2011-01-09 17:23 +0100
http://bitbucket.org/pypy/pypy/changeset/c45dc5d55121/

Log:	assume pure functions dont have any sideffects

diff --git a/pypy/jit/codewriter/effectinfo.py b/pypy/jit/codewriter/effectinfo.py
--- a/pypy/jit/codewriter/effectinfo.py
+++ b/pypy/jit/codewriter/effectinfo.py
@@ -60,7 +60,8 @@
             return cls._cache[key]
         result = object.__new__(cls)
         result.readonly_descrs_fields = readonly_descrs_fields
-        if extraeffect == EffectInfo.EF_LOOPINVARIANT:            
+        if extraeffect == EffectInfo.EF_LOOPINVARIANT or \
+           extraeffect == EffectInfo.EF_PURE:            
             result.write_descrs_fields = []
             result.write_descrs_arrays = []
         else: