Use the gpuarray tag for gpuarray optimisations.

theano/sandbox/gpuarray/opt.py

@@ -146,13 +146,13 @@ gpu_local_elemwise_fusion = tensor.opt.local_elemwise_fusion_op(
     GpuElemwise,
     max_inputs_to_GpuElemwise)
 optdb.register('gpua_elemwise_fusion',
-               tensor.opt.FusionOptimizer(gpu_local_elemwise_fusion),
-               71.00, 'fast_run', 'fusion', 'local_elemwise_fusion', 'gpu')
+               tensor.opt.FusionOptimizer(gpu_local_elemwise_fusion), 71.00,
+               'fast_run', 'fusion', 'local_elemwise_fusion', 'gpuarray')
 
 inplace_gpu_elemwise_opt = tensor.opt.inplace_elemwise_optimizer_op(
     GpuElemwise)
 optdb.register('gpua_inplace_opt', inplace_gpu_elemwise_opt, 75,
-               'inplace_elemwise_optimizer', 'fast_run', 'inplace')
+               'inplace_elemwise_optimizer', 'fast_run', 'inplace', 'gpuarray')
 
 
 @register_opt()