[pypy-commit] pypy default: fix.

[arigo]

Author: Armin Rigo <arigo at tunes.org>
Branch: 
Changeset: r50806:2261c6bb4a58
Date: 2011-12-21 16:15 +0100
http://bitbucket.org/pypy/pypy/changeset/2261c6bb4a58/

Log:	fix.

diff --git a/pypy/jit/backend/x86/jump.py b/pypy/jit/backend/x86/jump.py
--- a/pypy/jit/backend/x86/jump.py
+++ b/pypy/jit/backend/x86/jump.py
@@ -17,7 +17,10 @@
         key = src._getregkey()
         if key in srccount:
             if key == dst_locations[i]._getregkey():
-                srccount[key] = -sys.maxint     # ignore a move "x = x"
+                # ignore a move "x = x"
+                # setting any "large enough" negative value is ok, but
+                # be careful of overflows, don't use -sys.maxint
+                srccount[key] = -len(dst_locations) - 1
                 pending_dests -= 1
             else:
                 srccount[key] += 1