[exo.tflite] Properly propagate type information (#4144)

The current implementation of type inference fails to properly propagate
type information.

Signed-off-by: Jonghyun Park <jh1302.park@samsung.com>

diff --git a/contrib/exo-tflite/src/TypeInference.cpp b/contrib/exo-tflite/src/TypeInference.cpp
index f5bd4ab..b4e693f 100644 (file)
--- a/contrib/exo-tflite/src/TypeInference.cpp
+++ b/contrib/exo-tflite/src/TypeInference.cpp
@@ -170,6 +170,7 @@ public:
   {                                                     \
     auto t = getOpResultType(node, _ctx);               \
     node->annot(stdex::make_unique<TypeAnnotation>(t)); \
+    _ctx._node_to_type[node] = t;                       \
   }
   NODE(ConstGen)
   NODE(Pull)

diff --git a/contrib/exo-tflite/src/TypeInference.test.cpp b/contrib/exo-tflite/src/TypeInference.test.cpp
new file mode 100644 (file)
index 0000000..3a922e8
--- /dev/null
+++ b/contrib/exo-tflite/src/TypeInference.test.cpp
@@ -0,0 +1,114 @@
+/*
+ * Copyright (c) 2019 Samsung Electronics Co., Ltd. All Rights Reserved
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * 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 "TypeInference.h"
+
+#include <loco/IR/PermutingCodec.h>
+#include <stdex/Memory.h>
+
+#include <gtest/gtest.h>
+
+using stdex::make_unique;
+
+namespace
+{
+
+class Sequential
+{
+public:
+  loco::Pull *addPullLayer(const loco::DataType &dtype = loco::DataType::FLOAT32)
+  {
+    loco::Pull *pull = _graph.nodes()->create<loco::Pull>();
+
+    auto graph_input = _graph.inputs()->create();
+    graph_input->name("graph_input");
+    graph_input->node(pull);
+
+    pull->dtype(dtype);
+    setSampleShape(pull);
+
+    return last(pull);
+  }
+
+  loco::ReLU *addReLULayer(void)
+  {
+    loco::ReLU *relu = _graph.nodes()->create<loco::ReLU>();
+
+    relu->input(_last);
+
+    return last(relu);
+  }
+
+  loco::Push *addPushLayer(void)
+  {
+    loco::Push *push = _graph.nodes()->create<loco::Push>();
+
+    auto graph_output = _graph.outputs()->create();
+    graph_output->name("graph_output");
+    graph_output->node(push);
+
+    push->from(_last);
+
+    return last(push);
+  }
+
+  loco::Graph *graph() { return &_graph; }
+
+private:
+  template <typename T> uint32_t setSampleShape(T *op)
+  {
+    const uint32_t n = 1;
+    const uint32_t h = 100;
+    const uint32_t w = 100;
+    const uint32_t c = 3;
+    op->rank(4);
+    op->dim(0).set(n);
+    op->dim(1).set(c);
+    op->dim(2).set(h);
+    op->dim(3).set(w);
+    return n * h * w * c;
+  }
+
+  template <typename T> T *last(T *node)
+  {
+    _last = node;
+    return node;
+  }
+
+private:
+  loco::Graph _graph;
+  loco::Node *_last;
+};
+
+struct TypeInferenceTest : public Sequential, public ::testing::Test
+{
+  virtual ~TypeInferenceTest() = default;
+};
+
+} // namespace
+
+// TypeInference SHOULD PROPAGATE type information properly
+TEST_F(TypeInferenceTest, Regression_0000)
+{
+  auto pull = addPullLayer(loco::DataType::S8);
+  auto relu = addReLULayer();
+  auto push = addPushLayer();
+
+  TypeInference::run(graph());
+
+  ASSERT_EQ(TypeInference::get(relu), tflite::TensorType_INT8);
+  ASSERT_EQ(TypeInference::get(push), tflite::TensorType_INT8);
+}