move gather_tree infer shape

Author: Zjq9409

paddle/fluid/operators/gather_tree_op.cc

@@ -12,7 +12,10 @@ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 See the License for the specific language governing permissions and
 limitations under the License. */
 
+#include "paddle/fluid/framework/infershape_utils.h"
 #include "paddle/fluid/framework/op_registry.h"
+#include "paddle/phi/core/infermeta_utils.h"
+#include "paddle/phi/infermeta/binary.h"
 
 namespace paddle {
 namespace operators {
@@ -21,20 +24,6 @@ class GatherTreeOp : public framework::OperatorWithKernel {
  public:
   using framework::OperatorWithKernel::OperatorWithKernel;
 
-  void InferShape(framework::InferShapeContext* ctx) const override {
-    OP_INOUT_CHECK(ctx->HasInput("Ids"), "Input", "Ids", "GatherTree");
-    OP_INOUT_CHECK(ctx->HasInput("Parents"), "Input", "Parents", "GatherTree");
-    OP_INOUT_CHECK(ctx->HasOutput("Out"), "Output", "Out", "GatherTree");
-
-    auto ids_dims = ctx->GetInputDim("Ids");
-    auto parents_dims = ctx->GetInputDim("Parents");
-    PADDLE_ENFORCE_EQ(ids_dims == parents_dims, true,
-                      platform::errors::InvalidArgument(
-                          "The shape of Input(Parents) must be same with the "
-                          "shape of Input(Ids)."));
-    ctx->SetOutputDim("Out", ids_dims);
-  }
-
  protected:
   framework::OpKernelType GetExpectedKernelType(
       const framework::ExecutionContext& ctx) const override {
@@ -72,4 +61,8 @@ selected ids.
 }  // namespace paddle
 
 namespace ops = paddle::operators;
-REGISTER_OPERATOR(gather_tree, ops::GatherTreeOp, ops::GatherTreeOpMaker);
+DELCARE_INFER_SHAPE_FUNCTOR(gather_tree, GatherTreeInferShapeFunctor,
+                            PT_INFER_META(phi::GatherTreeMeta));
+
+REGISTER_OPERATOR(gather_tree, ops::GatherTreeOp, ops::GatherTreeOpMaker,
+                  GatherTreeInferShapeFunctor);

paddle/phi/infermeta/binary.cc

@@ -348,4 +348,17 @@ void BCELossInferMeta(const MetaTensor& input,
   out->share_lod(input);
 }
 
+void GatherTreeMeta(const MetaTensor& ids,
+                    const MetaTensor& parents,
+                    MetaTensor* out) {
+  auto ids_dims = ids.dims();
+  auto parents_dims = parents.dims();
+  PADDLE_ENFORCE_EQ(ids_dims == parents_dims,
+                    true,
+                    phi::errors::InvalidArgument(
+                        "The shape of Input(Parents) must be same with the "
+                        "shape of Input(Ids)."));
+  out->set_dims(ids_dims);
+}
+
 }  // namespace phi

paddle/phi/infermeta/binary.h

@@ -68,4 +68,8 @@ void BCELossInferMeta(const MetaTensor& input,
                       const MetaTensor& label,
                       MetaTensor* out,
                       MetaConfig config = MetaConfig());
+
+void GatherTreeMeta(const MetaTensor& ids,
+                    const MetaTensor& parents,
+                    MetaTensor* out);
 }  // namespace phi