add gpu place

python/paddle/fluid/tests/unittests/test_fill_constant_op.py

@@ -69,7 +69,9 @@ class TestFillConstantOpWithSelectedRows(OpTest):
 
     def test_fill_constant_with_selected_rows(self):
         places = [core.CPUPlace()]
-        # currently only support CPU
+        if core.is_compiled_with_cuda():
+            places.append(core.CUDAPlace(0))
+
         for place in places:
             self.check_with_place(place)