1 files changed, 87 insertions, 0 deletions
diff --git a/compiler/mir/src/Shape.cpp b/compiler/mir/src/Shape.cpp
new file mode 100644
index 000000000..825420cd6
--- /dev/null
+++ b/compiler/mir/src/Shape.cpp
@@ -0,0 +1,87 @@
+/*
+ * Copyright (c) 2018 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 "mir/Shape.h"
+
+#include <algorithm>
+#include <cassert>
+#include <sstream>
+
+namespace mir
+{
+
+constexpr int32_t mir::Shape::autoDim;
+
+void Shape::resize(int32_t size) { _dims.resize(size); }
+
+int32_t Shape::numElements() const
+{
+  int32_t res = 1;
+
+  for (int32_t axis = 0; axis < rank(); ++axis)
+  {
+    assert(dim(axis) != Shape::autoDim);
+    res *= dim(axis);
+  }
+
+  return res;
+}
+
+Shape broadcastShapes(const Shape &lhs_shape, const Shape &rhs_shape)
+{
+  const int num_dims = std::max(lhs_shape.rank(), rhs_shape.rank());
+  Shape result_shape(num_dims);
+
+  for (int i = 0; i < num_dims; ++i)
+  {
+    const std::int32_t lhs_dim =
+        (i >= num_dims - lhs_shape.rank()) ? lhs_shape.dim(i - (num_dims - lhs_shape.rank())) : 1;
+    const std::int32_t rhs_dim =
+        (i >= num_dims - rhs_shape.rank()) ? rhs_shape.dim(i - (num_dims - rhs_shape.rank())) : 1;
+    if (lhs_dim == 1)
+    {
+      result_shape.dim(i) = rhs_dim;
+    }
+    else
+    {
+      assert(rhs_dim == 1 || rhs_dim == lhs_dim);
+      result_shape.dim(i) = lhs_dim;
+    }
+  }
+
+  return result_shape;
+}
+
+std::string toString(const Shape &shape)
+{
+  std::stringstream ss;
+
+  ss << "[";
+  for (int32_t axis = 0; axis < shape.rank(); ++axis)
+  {
+    if (axis != 0)
+      ss << ", ";
+    if (shape.dim(axis) == Shape::autoDim)
+      ss << "AUTO";
+    else
+      ss << shape.dim(axis);
+  }
+  ss << "]";
+
+  return ss.str();
+}
+
+} // namespace mir