llvm::SmallVector<int64_t, 4> low_padding(rank, 0);
      llvm::SmallVector<int64_t, 4> high_padding(rank, 0);
      llvm::SmallVector<int64_t, 4> interior_padding(rank, 0);
      low_padding[axis] = 1;
      high_padding[axis] = -1;
      result = rewriter.create<PadOp>(
          op.getLoc(), result, init, GetI64ElementsAttr(low_padding, &rewriter),
          GetI64ElementsAttr(high_padding, &rewriter),

    if (padding.has_value()) {
      SmallVector<int64_t> new_padding(rank * 2, 0);
      auto old_padding = (*padding).getValues<int64_t>();
      for (int64_t idx = 0; idx < rank; ++idx) {
        new_padding[2 * transpose_perm[idx]] = old_padding[2 * idx];
        new_padding[2 * transpose_perm[idx] + 1] = old_padding[2 * idx + 1];
      }
      new_padding_attr =

    // Emulate negative padding with a slice and remove negative values from the
    // padding vector.
    Value sliced_lhs = SliceNegativePadding(lhs, explicit_padding, rewriter);
    auto new_padding =
        llvm::to_vector<(num_spatial_dims * 2) + 4>(llvm::map_range(
            explicit_padding, [](int64_t dim) { return dim > 0 ? dim : 0; }));