[PyTorch] : implement support for replicated{1,2,3} pad

src/frontends/pytorch/src/op/pad.cpp

@@ -134,6 +134,14 @@ OutputVector translate_reflection_pad_nd_fx(const NodeContext& context) {
     return translate_pad_common(context, data, paddings, pad_value, "reflect");
 }
 
+OutputVector translate_replicate_pad_nd_fx{const NodeContext & context} {
+    num_inputs_check(context, 2, 2);
+    auto data = context.get_input(0);
+    auto paddings = context.const_input<std::vector<int64_t>>(1);
+    Output<Node> pad_value = context.mark_node(v0::Constant::create(element::f32, Shape{}, {0}));
+    return translate_pad_common(context, data, paddings, pad_value, "replicate");
+}
+
 }  // namespace op
 }  // namespace pytorch
 }  // namespace frontend

src/frontends/pytorch/src/op_table.cpp

@@ -297,6 +297,7 @@ OP_CONVERTER(translate_new_zeros_fx);
 OP_CONVERTER(translate_ones_fx);
 OP_CONVERTER(translate_ones_like_fx);
 OP_CONVERTER(translate_reflection_pad_nd_fx);
+OP_CONVERTER(translate_replicate_pad_nd_fx);
 OP_CONVERTER(translate_reshape_fx);
 OP_CONVERTER(translate_rsub_fx);
 OP_CONVERTER(translate_scalar_tensor_fx);
@@ -930,6 +931,9 @@ const std::unordered_map<std::string, CreatorFunction> get_supported_ops_fx() {
         {"aten.reflection_pad1d.default", op::translate_reflection_pad_nd_fx},
         {"aten.reflection_pad2d.default", op::translate_reflection_pad_nd_fx},
         {"aten.reflection_pad3d.default", op::translate_reflection_pad_nd_fx},
+        {"aten.replicate_pad1d.default", op::translate_replicate_pad_nd_fx},
+        {"aten.replicate_pad2d.default", op::translate_replicate_pad_nd_fx},
+        {"aten.replicate_pad3d.default", op::translate_replicate_pad_nd_fx},
         {"aten.relu.default", op::translate_1to1_match_1_inputs<opset10::Relu>},
         {"aten.relu_.default", op::inplace_op<op::translate_1to1_match_1_inputs<opset10::Relu>>},
         {"aten.repeat.default", op::translate_1to1_match_2_inputs<opset10::Tile>},

tests/layer_tests/pytorch_tests/test_pad.py

@@ -219,9 +219,9 @@ def __init__(self, pads):
                 if ndim == 1:
                     self.pad = torch.nn.ReflectionPad1d(pads)
                 elif ndim == 2:
-                    self.pad = torch.nn.ReflectionPad1d(pads)
+                    self.pad = torch.nn.ReflectionPad2d(pads)
                 elif ndim == 3:
-                    self.pad = torch.nn.ReflectionPad1d(pads)
+                    self.pad = torch.nn.ReflectionPad3d(pads)
                 else:
                     raise Exception("Unsupported pads")
 
@@ -244,3 +244,44 @@ def test_reflection_padnd(self, pads, dtype, ie_device, precision, ir_version):
         print(ndim)
         self._test(*self.create_model(pads), ie_device, precision, ir_version,
                    kwargs_to_prepare_input={"ndim": ndim, "dtype": dtype})
+
+class TestReplicatePad(PytorchLayerTest):
+    def _prepare_input(self, ndim=4, dtype="float32"):
+        import numpy as np
+        input_5d_shape = [5,9,1,1,2,4]
+        return (np.random.randn(*input_5d_shape[:ndim]).astype(dtype),)
+
+    def create_model(self, pads):
+        import torch
+        import torch.nn.functional as F
+
+        class aten_pad(torch.nn.Module):
+            def __init__(self, pads):
+                super().__init__()
+                ndim = len(pads) / 2
+                if ndim == 1:
+                    self.pad = torch.nn.ReplicationPad1d(pads)
+                elif ndim == 2:
+                    self.pad = torch.nn.ReplicationPad2d(pads)
+                elif ndim == 3:
+                    self.pad = torch.nn.ReplicationPad3d(pads)
+                else:
+                    raise Exception("Unsupported pads")
+
+            def forward(self, x):
+                return self.pad(x)
+
+        return aten_pad(pads), None, "aten::pad"
+
+    @pytest.mark.parametrize("dtype", ["float32", "float64", "int32"])
+    @pytest.mark.parametrize("pads", [
+        (1, 2),
+        (1, 2, 3, 4),
+        (1, 2, 3, 4, 3, 2),
+    ])
+    @pytest.mark.nightly
+    @pytest.mark.precommit_torch_export
+    def test_replicate_padnd(self, pads, dtype, ie_device, precision, ir_version):
+        ndim = len(pads) // 2 + 2
+        self._test(*self.create_model(pads), ie_device, precision, ir_version,
+                   kwargs_to_prepare_input={"ndim": ndim, "dtype": dtype})