message: Enable Use of Cudnn APIs for Backward Input Grouped Convolutions
diff: @@ -258,15 +258,6 @@ MatchBackwardInput(HloInstruction* conv) {
  const auto no_match_result =
  std::make_tuple(false, Window(), ConvolutionDimensionNumbers(), nullptr);
  - // TODO(b/119479517): Theoretically cuDNN supports grouped convolutions also
  - // for the backward input convolution, but at least for now with version 7.1.4
  - // it is slower. This needs to be re-evaluated for future cuDNN versions.
  - // Note that we already have the necessary code down below, the only thing to
  - // enable it is to remove the following early return.
  - if (conv->feature_group_count() > 1) {
  - return no_match_result;
  - }
  -
  // Match instruction pattern.
  CHECK_EQ(HloOpcode::kConvolution, conv->opcode());
  HloInstruction* reverse_filter = conv->mutable_operand(1);
  