IVGCVSW-6382 Add Gather operator support to ONNX parser

 * Add ParseGather to support Gather operator on ONNX
 * Add Support of int64 converted to int32 for constant
 * Add OnnxParserTestUtils
 * Refactor ValidateTensorShapesFromInputs of GatherLayer
 * Unit tests

Signed-off-by: Narumol Prangnawarat <narumol.prangnawarat@arm.com>
Change-Id: Ie9dff640240e14a062fef38f7faf0ccc212de5f7

1 files changed, 21 insertions, 0 deletions

diff --git a/src/armnnOnnxParser/test/OnnxParserTestUtils.hpp b/src/armnnOnnxParser/test/OnnxParserTestUtils.hpp
new file mode 100644
index 0000000000..4ed6543d28
--- /dev/null
+++ b/src/armnnOnnxParser/test/OnnxParserTestUtils.hpp
@@ -0,0 +1,21 @@
+//
+// Copyright © 2021 Arm Ltd and Contributors. All rights reserved.
+// SPDX-License-Identifier: MIT
+//
+
+#pragma once
+
+namespace armnnUtils
+{
+
+std::string ConstructTensorShapeString(const std::vector<int>& shape)
+{
+    std::string shapeStr;
+    for (int i : shape)
+    {
+        shapeStr = fmt::format("{} dim {{ dim_value: {} }}", shapeStr, i);
+    }
+    return shapeStr;
+}
+
+} // namespace armnnUtils
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