message: dnn(ocl): avoid memory access violation
diff: @@ -248,39 +248,38 @@ convolve_simd(
  int curr_y = or * STRIDE_Y;
  int curr_x = oc * STRIDE_X + lid;
  -#if INPUT_PAD_W != 0 || INPUT_PAD_H != 0 || INPUT_PAD_BOTTOM != 0 || INPUT_PAD_RIGHT != 0
  - int saved_y = curr_y;
  -#endif
  +
  int in_addr = input_batch_offset
  + (curr_y - INPUT_PAD_H) * INPUT_WIDTH // y tile offset
  + curr_x - INPUT_PAD_W; // x tile offset
  + const int in_limit = (get_global_size(2) / ALIGNED_NUM_FILTERS) * TOTAL_INPUT_DEPTH_SIZE * INPUT_PITCH - 1;
  +
  Dtype in_buf[INVEC_SIZE];
  for(int kd = 0; kd < INPUT_DEPTH; kd++)
  {
  +#if INPUT_PAD_W != 0 || INPUT_PAD_H != 0 || INPUT_PAD_BOTTOM != 0 || INPUT_PAD_RIGHT != 0
  + const bool cx_out_of_range = !(curr_x >= INPUT_PAD_W && curr_x < INPUT_WIDTH + INPUT_PAD_W);
  int in_offset = in_addr;
  __attribute__((opencl_unroll_hint(INVEC_SIZE)))
  - for (int reg = 0; reg < INVEC_SIZE; reg++)
  + for (int reg = 0; reg < INVEC_SIZE; reg++, in_offset += INPUT_WIDTH)
  {
  - in_buf[reg] = inputs[in_offset];
  -#if INPUT_PAD_W != 0 || INPUT_PAD_H != 0 || INPUT_PAD_BOTTOM != 0 || INPUT_PAD_RIGHT != 0
  - if (!(curr_y >= INPUT_PAD_H && curr_y < INPUT_HEIGHT + INPUT_PAD_H &&
  - curr_x >= INPUT_PAD_W && curr_x < INPUT_WIDTH + INPUT_PAD_W))
  + Dtype input = inputs[clamp(in_offset, 0, in_limit)];
  + int cy = curr_y + reg;
  + in_buf[reg] = (cx_out_of_range || cy < INPUT_PAD_H || cy >= INPUT_HEIGHT + INPUT_PAD_H) ? 0 : input;
  + }
  +#else
  + int in_offset = in_addr;
  + __attribute__((opencl_unroll_hint(INVEC_SIZE)))
  + for (int reg = 0; reg < INVEC_SIZE; reg++, in_offset += INPUT_WIDTH)
  {
  - in_buf[reg] = 0;
  + in_buf[reg] = inputs[min(in_offset, in_limit)];
  }
  #endif
  - curr_y += 1;
  - in_offset += INPUT_WIDTH;
  - }
  in_addr += INPUT_PITCH;
  -#if INPUT_PAD_W != 0 || INPUT_PAD_H != 0 || INPUT_PAD_BOTTOM != 0 || INPUT_PAD_RIGHT != 0
  - curr_y = saved_y;
  -#endif
  -
  Dtype weight_buf[WEIGHT_PREF];
  int w_idx=0;
  