[pypy-commit] pypy default: essential optimization, don't store None in producer (and update it all the time too)

[fijal]

Author: Maciej Fijalkowski <fijall at gmail.com>
Branch: 
Changeset: r75044:fd1489733b1e
Date: 2014-12-19 15:52 +0200
http://bitbucket.org/pypy/pypy/changeset/fd1489733b1e/

Log:	essential optimization, don't store None in producer (and update it
	all the time too)

diff --git a/rpython/jit/metainterp/optimizeopt/optimizer.py b/rpython/jit/metainterp/optimizeopt/optimizer.py
--- a/rpython/jit/metainterp/optimizeopt/optimizer.py
+++ b/rpython/jit/metainterp/optimizeopt/optimizer.py
@@ -541,7 +541,8 @@
         self.first_optimization.propagate_forward(op)
 
     def propagate_forward(self, op):
-        self.producer[op.result] = op
+        if op.result is not None:
+            self.producer[op.result] = op
         dispatch_opt(self, op)
 
     def emit_operation(self, op):