[loco] Introduce Stride class (#3461)

* [loco] Introduce Stride class

This commit declares (generic) Stride class, and provides its
specialization over 2D.

Signed-off-by: Jonghyun Park <jh1302.park@samsung.com>
* Mark as a final class

diff --git a/contrib/loco/include/loco/IR/Stride.h b/contrib/loco/include/loco/IR/Stride.h
new file mode 100644 (file)
index 0000000..eb9d471
--- /dev/null
+++ b/contrib/loco/include/loco/IR/Stride.h
@@ -0,0 +1,50 @@
+/*
+ * 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.
+ */
+
+#ifndef __LOCO_IR_STRIDE_H__
+#define __LOCO_IR_STRIDE_H__
+
+#include <cstdint>
+
+namespace loco
+{
+
+/**
+ * @brief Stride configuration for N-dimensional spatial operations
+ */
+template <unsigned N> class Stride;
+
+/**
+ * @brief Stride configuration for 2D spatial operations
+ */
+template <> class Stride<2> final
+{
+public:
+  uint32_t vertical(void) const { return _vertical; }
+  void vertical(uint32_t value) { _vertical = value; }
+
+public:
+  uint32_t horizontal(void) const { return _horizontal; }
+  void horizontal(uint32_t value) { _horizontal = value; }
+
+private:
+  uint32_t _vertical = 1;
+  uint32_t _horizontal = 1;
+};
+
+} // namespace loco
+
+#endif // __LOCO_IR_STRIDE_H__

diff --git a/contrib/loco/src/IR/Stride.test.cpp b/contrib/loco/src/IR/Stride.test.cpp
new file mode 100644 (file)
index 0000000..60deb5c
--- /dev/null
+++ b/contrib/loco/src/IR/Stride.test.cpp
@@ -0,0 +1,42 @@
+/*
+ * 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 "loco/IR/Stride.h"
+
+#include <gtest/gtest.h>
+
+TEST(StrideTest, default_constructor_2D)
+{
+  loco::Stride<2> stride;
+
+  ASSERT_EQ(stride.vertical(), 1);
+  ASSERT_EQ(stride.horizontal(), 1);
+}
+
+TEST(StrideTest, setter_and_getter_2D)
+{
+  loco::Stride<2> stride;
+
+  stride.vertical(2);
+
+  ASSERT_EQ(stride.vertical(), 2);
+  ASSERT_EQ(stride.horizontal(), 1);
+
+  stride.horizontal(3);
+
+  ASSERT_EQ(stride.vertical(), 2);
+  ASSERT_EQ(stride.horizontal(), 3);
+}