Fix the pushout optimization

When running on GPU, and constructing the list of inputs, they might not end up on the right device (i.e. the input is on gpu instead of cpu or the other way around). The simple fix is just to filter the arguments.

Fix the pushout optimization
7455d2d7 · Razvan Pascanu · Razvan Pascanu · 560ad497 · 7455d2d7
--- a/theano/scan_module/scan_opt.py
+++ b/theano/scan_module/scan_opt.py
@@ -222,6 +222,8 @@ class PushOutNonSeqScan(gof.Optimizer):
                                 'to move some computation fron scan '
                                 'which is not allowed to move. Report '
                                 'this on theano-users list'), x)
+                    outside_ins = [x.type.filter_variable(y) for x,y in
+                                   zip(nd.inputs, outside_ins)]
                    nw_outer_node = nd.op.make_node(*outside_ins)
                    # Step 2. Create variables for replacements
                    for idx, y in enumerate(nd.outputs):