commit 9c7c2d2d23693877867bb3284c577b33cfbff471
author Viet-Hoa Do <viet-hoa.do@arm.com> Tue Apr 11 17:16:27 2023 +0100
committer Viet-Hoa Do <viet-hoa.do@arm.com> Wed Apr 19 08:40:45 2023 +0000
tree f470a88b23498c1b5d13c5f9578caaf9d0599b74
parent 9d0c4deb760efc2ca07e5e0b8218995201ad8a1f

Add quantized support for CPU MatMul

Resolves: COMPMID-5899
Signed-off-by: Viet-Hoa Do <viet-hoa.do@arm.com>
Change-Id: I89d96e292c3492ba9b1900a3e5683f9dcd11dfc6
Reviewed-on: https://review.mlplatform.org/c/ml/ComputeLibrary/+/9440
Tested-by: Arm Jenkins <bsgcomp@arm.com>
Reviewed-by: Gunes Bayir <gunes.bayir@arm.com>
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>
Benchmark: Arm Jenkins <bsgcomp@arm.com>

src/core/utils/quantization/AsymmHelpers.cpp

diff --git a/src/core/utils/quantization/AsymmHelpers.cpp b/src/core/utils/quantization/AsymmHelpers.cpp
index eb00863..ba9a97a 100644
--- a/src/core/utils/quantization/AsymmHelpers.cpp
+++ b/src/core/utils/quantization/AsymmHelpers.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017-2022 Arm Limited.
+ * Copyright (c) 2017-2023 Arm Limited.
  *
  * SPDX-License-Identifier: MIT
  *
@@ -176,6 +176,38 @@
     }
     return std::make_pair(min_quant_val, max_quant_val);
 }
+
+std::tuple<PixelValue, PixelValue> get_quantized_asymmetric_output_min_max(const QuantizationInfo &q_info, const ActivationLayerInfo &act_info, DataType data_type)
+{
+    PixelValue type_min{};
+    PixelValue type_max{};
+    std::tie(type_min, type_max)         = get_min_max(data_type);
+    const UniformQuantizationInfo q_unif = q_info.uniform();
+
+    if(act_info.enabled())
+    {
+        switch(act_info.activation())
+        {
+            case ActivationLayerInfo::ActivationFunction::RELU:
+                type_min = PixelValue(q_unif.offset);
+                break;
+            case ActivationLayerInfo::ActivationFunction::BOUNDED_RELU:
+                type_min = PixelValue(q_unif.offset);
+                type_max = PixelValue(act_info.a(), data_type, q_info);
+                break;
+            case ActivationLayerInfo::ActivationFunction::LU_BOUNDED_RELU:
+                type_min = PixelValue(act_info.b(), data_type, q_info);
+                type_max = PixelValue(act_info.a(), data_type, q_info);
+                break;
+            default:
+                ARM_COMPUTE_ERROR("Activation function not supported.");
+                break;
+        }
+    }
+
+    return std::make_pair(type_min, type_max);
+}
+
 void compute_quantized_multipliers_and_shifts(const ITensorInfo *input,
                                               const ITensorInfo *weights,
                                               const ITensorInfo *output,