message: Flush to zero Convolution denormal weights
diff: @@ -1230,6 +1230,13 @@ public:
  CV_TRACE_FUNCTION();
  CV_TRACE_ARG_VALUE(name, "name", name.c_str());
  +#if CV_TRY_SSE
  + uint32_t ftzMode = _MM_GET_FLUSH_ZERO_MODE();
  + uint32_t dazMode = _MM_GET_DENORMALS_ZERO_MODE();
  + _MM_SET_FLUSH_ZERO_MODE(_MM_FLUSH_ZERO_ON);
  + _MM_SET_DENORMALS_ZERO_MODE(_MM_DENORMALS_ZERO_ON);
  +#endif
  +
  CV_OCL_RUN(IS_DNN_OPENCL_TARGET(preferableTarget),
  forward_ocl(inputs_arr, outputs_arr, internals_arr))
  @@ -1312,6 +1319,10 @@ public:
  ParallelConv::run(inputs[0], outputs[0], weightsMat, biasvec, reluslope,
  kernel_size, strides, pads_begin, pads_end, dilations, activ.get(), ngroups, nstripes);
  }
  +#if CV_TRY_SSE
  + _MM_SET_FLUSH_ZERO_MODE(ftzMode);
  + _MM_SET_DENORMALS_ZERO_MODE(dazMode);
  +#endif
  }
  virtual int64 getFLOPS(const std::vector<MatShape> &inputs,
  