COMPMID-3304: Update OpenCL GEMM heuristic for Int8

Change-Id: I6b7ff678d8d0437a1639db2ff602ea1cdb155464
Signed-off-by: Gian Marco Iodice <gianmarco.iodice@arm.com>
Reviewed-on: https://review.mlplatform.org/c/ml/ComputeLibrary/+/3056
Tested-by: Arm Jenkins <bsgcomp@arm.com>
Reviewed-by: Georgios Pinitas <georgios.pinitas@arm.com>
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>

1 files changed, 75 insertions, 0 deletions

diff --git a/src/core/CL/gemm/native/CLGEMMNativeKernelConfigurationMidgard.cpp b/src/core/CL/gemm/native/CLGEMMNativeKernelConfigurationMidgard.cpp
new file mode 100644
index 0000000000..86c056ffc2
--- /dev/null
+++ b/src/core/CL/gemm/native/CLGEMMNativeKernelConfigurationMidgard.cpp
@@ -0,0 +1,75 @@
+/*
+ * Copyright (c) 2020 ARM Limited.
+ *
+ * SPDX-License-Identifier: MIT
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+#include "arm_compute/core/CL/gemm/native/CLGEMMNativeKernelConfigurationMidgard.h"
+
+#include "arm_compute/core/CL/CLHelpers.h"
+#include "arm_compute/core/CL/CLKernelLibrary.h"
+#include "arm_compute/core/CL/gemm/CLGEMMHelpers.h"
+#include "arm_compute/core/GPUTarget.h"
+
+#include <map>
+#include <utility>
+
+namespace arm_compute
+{
+namespace cl_gemm
+{
+CLGEMMNativeKernelConfigurationMidgard::CLGEMMNativeKernelConfigurationMidgard(GPUTarget gpu)
+    : ICLGEMMKernelConfiguration(gpu)
+{
+}
+
+std::pair<GEMMLHSMatrixInfo, GEMMRHSMatrixInfo> CLGEMMNativeKernelConfigurationMidgard::configure(unsigned int m, unsigned int n, unsigned int k, unsigned int b, DataType data_type)
+{
+    using ConfigurationFunctionExecutorPtr = std::pair<GEMMLHSMatrixInfo, GEMMRHSMatrixInfo> (CLGEMMNativeKernelConfigurationMidgard::*)(unsigned int m, unsigned int n, unsigned int k,
+                                             unsigned int b);
+
+    // Configurations for Midgard architectures
+    static std::map<DataType, ConfigurationFunctionExecutorPtr> default_configs =
+    {
+        { DataType::QASYMM8, &CLGEMMNativeKernelConfigurationMidgard::default_q8 },
+        { DataType::QASYMM8_SIGNED, &CLGEMMNativeKernelConfigurationMidgard::default_q8 },
+        { DataType::QSYMM8, &CLGEMMNativeKernelConfigurationMidgard::default_q8 },
+        { DataType::QSYMM8_PER_CHANNEL, &CLGEMMNativeKernelConfigurationMidgard::default_q8 }
+    };
+
+    if(default_configs.find(data_type) != default_configs.end())
+    {
+        return (this->*default_configs[data_type])(m, n, k, b);
+    }
+    ARM_COMPUTE_ERROR("Not supported data type");
+}
+
+std::pair<GEMMLHSMatrixInfo, GEMMRHSMatrixInfo> CLGEMMNativeKernelConfigurationMidgard::default_q8(unsigned int m, unsigned int n, unsigned int k, unsigned int b)
+{
+    ARM_COMPUTE_UNUSED(k);
+    ARM_COMPUTE_UNUSED(b);
+
+    const unsigned int m0 = std::min(m, static_cast<unsigned int>(4));
+    const unsigned int n0 = std::min(n, static_cast<unsigned int>(4));
+
+    return configure_lhs_rhs_info(m, n, m0, n0, 2, 1, 1, false, false, false, false);
+}
+} // namespace cl_gemm
+} // namespace arm_compute
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