[ONNX]GatherNd, Round, IsNaN, IsInf (apache#5445)

Author: siju-samuel

python/tvm/relay/frontend/onnx.py

@@ -942,6 +942,14 @@ def _impl_v1(cls, inputs, attr, params):
                        extras={'axis': axis})(inputs, {})
 
 
+class GatherND(OnnxOpConverter):
+    """ Operator converter for GatherND.
+    """
+    @classmethod
+    def _impl_v1(cls, inputs, attr, params):
+        return _op.gather_nd(inputs[0], inputs[1])
+
+
 class Greater(OnnxOpConverter):
     """ Operator logical greater.
     """
@@ -1536,6 +1544,9 @@ def _get_convert_map(opset):
         'Reciprocal': Reciprocal.get_converter(opset),
         'Floor': Renamer('floor'),
         'Ceil': Renamer('ceil'),
+        'Round': Renamer('round'),
+        'IsInf': Renamer('isinf'),
+        'IsNaN': Renamer('isnan'),
         'Sqrt': Renamer('sqrt'),
         'Relu': Renamer('relu'),
         'LeakyRelu': Renamer('leaky_relu'),
@@ -1606,6 +1617,7 @@ def _get_convert_map(opset):
         'DepthToSpace': DepthToSpace.get_converter(opset),
         'SpaceToDepth': SpaceToDepth.get_converter(opset),
         'Gather': Gather.get_converter(opset),
+        'GatherND': GatherND.get_converter(opset),
         'Squeeze': AttrCvt('squeeze', {'axes': 'axis'}),
         'Unsqueeze': Unsqueeze.get_converter(opset),
         'Pad': Pad.get_converter(opset),

tests/python/frontend/onnx/test_forward.py

@@ -542,6 +542,70 @@ def test_clip():
                               {'min': -1.0, 'max': 1.0})
 
 
+
+def test_round():
+    _test_onnx_op_elementwise((2, 4, 5, 6), np.round, {}, 'float32', 'Round', {})
+
+
+def _test_finite_ops(inshape, outfunc, npargs, dtype, opname, kwargs):
+    indata = np.random.choice(a=[np.nan, np.inf, -np.inf, 0.5, 1.0, 0], size=inshape).astype(dtype)
+
+    outdata = outfunc(indata, **npargs)
+    y = helper.make_node(opname, ['in'], ['out'], **kwargs)
+
+    graph = helper.make_graph([y],
+                              opname+'_test',
+                              inputs=[helper.make_tensor_value_info("in",
+                                                                    TensorProto.FLOAT, list(indata.shape))],
+                              outputs=[helper.make_tensor_value_info("out",
+                                                                     TensorProto.BOOL, list(outdata.shape))])
+
+    model = helper.make_model(graph, producer_name=opname+'_test')
+
+    for target, ctx in ctx_list():
+        tvm_out = get_tvm_output(
+            model, indata, target, ctx, outdata.shape, dtype)
+
+    tvm.testing.assert_allclose(outdata, tvm_out)
+
+
+def test_isinf():
+    _test_finite_ops((2, 4, 5, 6), np.isinf, {}, 'float32', 'IsInf', {})
+
+
+def test_isnan():
+    _test_finite_ops((2, 4, 5, 6), np.isnan, {}, 'float32', 'IsNaN', {})
+
+
+def verify_gather_nd(in_shape, indices, dtype):
+    x = np.random.uniform(size=in_shape).astype(dtype)
+    indices = np.array(indices, dtype="int32")
+    out_np = topi.testing.gather_nd_python(x, indices)
+
+    y = helper.make_node("GatherND", ['in', 'indices'], ['out'])
+
+    graph = helper.make_graph([y],
+                              'gather_test',
+                              inputs=[helper.make_tensor_value_info("in",
+                                                                    TensorProto.FLOAT, list(in_shape)),
+                                      helper.make_tensor_value_info("indices",
+                                                                    TensorProto.INT32, list(indices.shape))],
+                              outputs=[helper.make_tensor_value_info("out",
+                                                                     TensorProto.FLOAT, list(out_np.shape))])
+    model = helper.make_model(graph, producer_name='gather_test')
+
+    for target, ctx in ctx_list():
+        tvm_out = get_tvm_output(
+            model, [x, indices], target, ctx, out_np.shape)
+        tvm.testing.assert_allclose(out_np, tvm_out)
+
+
+def test_gather_nd():
+    verify_gather_nd((2, 2), [[0,0],[1,1]], 'int32')
+    verify_gather_nd((3, 3, 3), [[0,1],[1,0]] , 'float32')
+    verify_gather_nd((4, 3, 5, 6), [[2, 1, 0, 0]], 'float32')
+
+
 def test_onehot():
     indices_shape = [10]
     indices_array = np.random.randint(
@@ -2379,11 +2443,15 @@ def verify_topk(input_dims, K, axis=-1):
     test_slice()
     test_floor()
     test_ceil()
+    test_round()
+    test_isinf()
+    test_isnan()
     test_clip()
     test_onehot()
     test_matmul()
     test_batch_matmul()
     test_gather()
+    test_gather_nd()
     test_lrn()
     test_instance_norm()
     test_upsample()