[AUTOGENERATED] [release/2.8] remove extra transposes in NHWC convolutions on MIOpen (#2410)

Cherry-pick of #2405

Co-authored-by: Dmitry Nikolaev <[email protected]>

Author: okakarpa

aten/src/ATen/native/miopen/Conv_miopen.cpp

@@ -1200,7 +1200,7 @@ std::tuple<at::Tensor,at::Tensor,at::Tensor> miopen_convolution_transpose_backwa
     IntArrayRef padding, IntArrayRef output_padding, IntArrayRef stride, IntArrayRef dilation, int64_t groups,
     bool benchmark, bool deterministic, std::array<bool,3> output_mask) {
 
-  Tensor grad_output = grad_output_t.contiguous();
+  Tensor grad_output = grad_output_t.contiguous(input.suggest_memory_format());
 
   Tensor grad_input, grad_weight, grad_bias;
   if (output_mask[0]) {
@@ -1452,7 +1452,7 @@ std::tuple<at::Tensor,at::Tensor,at::Tensor> miopen_depthwise_convolution_backwa
     IntArrayRef padding, IntArrayRef stride, IntArrayRef dilation, int64_t groups,
     bool benchmark, bool deterministic, std::array<bool,3> output_mask) {
 
-  Tensor grad_output = grad_output_t.contiguous();
+  Tensor grad_output = grad_output_t.contiguous(input.suggest_memory_format());
 
   Tensor grad_input, grad_weight, grad_bias;
   if (output_mask[0]) {