Fix some optimizations not able to infer context when the lift request

theano/sandbox/gpuarray/opt.py

@@ -129,18 +129,16 @@ def op_lifter(OP, cuda_only=False):
                      get_context(context_name).kind != 'cuda')):
                     return False
 
+                # tag the inputs with the context in case
+                # the context was derived from the outputs
+                for i in node.inputs:
+                    i.tag.context_name = context_name
                 new_op = maker(node, context_name)
                 # This is needed as sometimes new_op inherits from OP.
                 if new_op and new_op != node.op:
                     if isinstance(new_op, theano.Op):
-                        # tag the inputs with the context in case
-                        # the context was derived from the outputs
-                        def tag(i, ctx):
-                            i.tag.context_name = ctx
-                            return i
-                        inputs = [tag(i, context_name) for i in node.inputs]
                         return [safe_to_cpu(o) for o in
-                                new_op(*inputs, return_list=True)]
+                                new_op(*node.inputs, return_list=True)]
                     elif isinstance(new_op, (tuple, list)):
                         return [safe_to_cpu(o) for o in new_op]
                     else:  # suppose it is a variable on the GPU
@@ -593,11 +591,11 @@ def local_gpua_advanced_incsubtensor(node, context_name):
     compute_capability = device_properties(active_device_no)['major']
 
     if (compute_capability < 2 or x.ndim != 2 or y.ndim != 2):
-        return [GpuAdvancedIncSubtensor1(
-                set_instead_of_inc=set_instead_of_inc)(x, y, ilist)]
+        return GpuAdvancedIncSubtensor1(
+            set_instead_of_inc=set_instead_of_inc)
     else:
-        return [GpuAdvancedIncSubtensor1_dev20(
-                set_instead_of_inc=set_instead_of_inc)(x, y, ilist)]
+        return GpuAdvancedIncSubtensor1_dev20(
+            set_instead_of_inc=set_instead_of_inc)
 
 
 @register_opt('fast_compile')
@@ -621,7 +619,6 @@ def local_gpua_careduce(node, context_name):
             node.op.scalar_op, axis=node.op.axis,
             dtype=getattr(node.op, 'dtype', None),
             acc_dtype=getattr(node.op, 'acc_dtype', None))
-        x.tag.context_name = context_name
         gvar = greduce(x)
         # We need to have the make node called, otherwise the mask can
         # be None