IVGCVSW-3026 Extend RefConvolution2dWorkload to support QSymm16

 * Added QuantisedSymm16 as supported type for Conv2D
 * Added Unit Tests for QSymm16

Signed-off-by: Mike Kelly <mike.kelly@arm.com>
Change-Id: I4a8176091e75abfb0ea3a4b913c213111512df75
diff --git a/src/backends/reference/test/RefLayerTests.cpp b/src/backends/reference/test/RefLayerTests.cpp
index b72c87b..ed8f02f 100644
--- a/src/backends/reference/test/RefLayerTests.cpp
+++ b/src/backends/reference/test/RefLayerTests.cpp
@@ -25,6 +25,9 @@
 ARMNN_AUTO_TEST_CASE(SimpleConvolution2d3x5Uint8, SimpleConvolution2d3x5Uint8Test, true, armnn::DataLayout::NCHW)
 ARMNN_AUTO_TEST_CASE(SimpleConvolution2d3x5Nhwc, SimpleConvolution2d3x5Test, true, armnn::DataLayout::NHWC)
 ARMNN_AUTO_TEST_CASE(SimpleConvolution2d3x5Uint8Nhwc, SimpleConvolution2d3x5Uint8Test, true, armnn::DataLayout::NHWC)
+ARMNN_AUTO_TEST_CASE(SimpleConvolution2d3x5QSymm16, SimpleConvolution2d3x5QSymm16Test, true, armnn::DataLayout::NCHW)
+ARMNN_AUTO_TEST_CASE(SimpleConvolution2d3x5QSymm16Nhwc, SimpleConvolution2d3x5QSymm16Test, true,
+                     armnn::DataLayout::NHWC)
 
 ARMNN_AUTO_TEST_CASE(UnbiasedConvolution2d, SimpleConvolution2d3x5Test, false, armnn::DataLayout::NCHW)
 ARMNN_AUTO_TEST_CASE(UnbiasedConvolutionUint8, SimpleConvolution2d3x5Uint8Test, false, armnn::DataLayout::NCHW)
@@ -36,9 +39,12 @@
 
 ARMNN_AUTO_TEST_CASE(SimpleConvolution2d3x3, SimpleConvolution2d3x3Test, true, armnn::DataLayout::NCHW)
 ARMNN_AUTO_TEST_CASE(SimpleConvolution2d3x3Uint8, SimpleConvolution2d3x3Uint8Test, true, armnn::DataLayout::NCHW)
+ARMNN_AUTO_TEST_CASE(SimpleConvolution2d3x3QSymm16, SimpleConvolution2d3x3QSymm16Test, true, armnn::DataLayout::NCHW)
 
 ARMNN_AUTO_TEST_CASE(SimpleConvolution2d3x3Nhwc, SimpleConvolution2d3x3Test, true, armnn::DataLayout::NHWC)
 ARMNN_AUTO_TEST_CASE(SimpleConvolution2d3x3Uint8Nhwc, SimpleConvolution2d3x3Uint8Test, true, armnn::DataLayout::NHWC)
+ARMNN_AUTO_TEST_CASE(SimpleConvolution2d3x3QSymm16Nhwc, SimpleConvolution2d3x3QSymm16Test, true,
+                     armnn::DataLayout::NCHW)
 
 ARMNN_AUTO_TEST_CASE(UnbiasedConvolution2dSquare, SimpleConvolution2d3x3Test, false, armnn::DataLayout::NCHW)
 ARMNN_AUTO_TEST_CASE(UnbiasedConvolution2dSquareNhwc, SimpleConvolution2d3x3Test, false, armnn::DataLayout::NHWC)