!4009 fix AbsGrad bug

Merge pull request !4009 from caojian05/ms_master_dev3

mindspore/ccsrc/backend/kernel_compiler/gpu/cuda_impl/broadcast_impl.cu

@@ -158,7 +158,7 @@ __global__ void BroadcastKernel(const int l0, const int l1, const int l2, const
       return BroadcastOperator<T, S, FloorDivFunc<T, S>>(l0, l1, l2, l3, r0, r1, r2, r3, d0, d1, d2, d3, input0, input1,
                                                       output);
     case BROADCAST_TYPE_ABSGRAD:
-      return BroadcastOperator<T, S, AddFunc<T, S>>(l0, l1, l2, l3, r0, r1, r2, r3, d0, d1, d2, d3, input0, input1,
+      return BroadcastOperator<T, S, AbsGradFunc<T, S>>(l0, l1, l2, l3, r0, r1, r2, r3, d0, d1, d2, d3, input0, input1,
                                                       output);
   }
 }
@@ -204,7 +204,7 @@ __global__ void NoBroadcastKernel(const int nums, enum BroadcastOpType op, const
     case BROADCAST_TYPE_FLOORDIV:
       return NoBroadcastOperator<T, S, FloorDivFunc<T, S>>(nums, input0, input1, output);
     case BROADCAST_TYPE_ABSGRAD:
-      return NoBroadcastOperator<T, S, FloorDivFunc<T, S>>(nums, input0, input1, output);
+      return NoBroadcastOperator<T, S, AbsGradFunc<T, S>>(nums, input0, input1, output);
   }
 }