Add c code to gpuarray rebroadcast

theano/sandbox/gpuarray/type.py

@@ -327,3 +327,16 @@ theano.compile.register_deep_copy_op_c_code(GpuArrayType, """
     %(oname)s = pygpu_copy(%(iname)s, GA_ANY_ORDER);
     if (!%(oname)s) { %(fail)s }
 """, version=(5,))
+
+theano.compile.register_rebroadcast_c_code(
+    GpuArrayType,
+    """
+    if(PyGpuArray_DIMS(%(iname)s)[%(axis)s] != 1){
+        PyErr_Format(PyExc_ValueError,
+            "Dimension %(axis)s in Rebroadcast's input was"
+            " supposed to be 1 (got %%d instead)",
+            PyGpuArray_DIMS(%(iname)s)[%(axis)s]);
+        %(fail)s
+    }
+    """,
+        version=1)