From 31441595009182c985dacbedc70c41ee6664d070 Mon Sep 17 00:00:00 2001
From: Ryan OShea <ryan.oshea3@arm.com>
Date: Mon, 7 Nov 2022 16:20:48 +0000
Subject: IVGCVSW-7214 Disable BF16-Turbo-Mode and remove conversion layers

 - Remove Bf16ToFp32 Conversion Layer
 - Remove Fp32ToBf16 Conversion Layer
 - Remove B16 Conversion tests
 * Throw exception if m_ReduceFp32ToBf16 optimzer option is set to true
 * Provide comments to enable fast math in order to use bf16
 * Update docs to inform users to enable fast math for bf16

 Execute Network Changes
 * Require bf16_turbo_mode to also have fast_math_enabled set to true
 - Remove setting m_ReduceFp32ToBf16 optimizer option

Signed-off-by: Ryan OShea <ryan.oshea3@arm.com>
Change-Id: Ibaa6da9d29c96a1ce32ff5196b0847fde9f04a1c
---
 src/backends/reference/workloads/BaseIterator.hpp | 60 -----------------------
 1 file changed, 60 deletions(-)

(limited to 'src/backends/reference/workloads/BaseIterator.hpp')

diff --git a/src/backends/reference/workloads/BaseIterator.hpp b/src/backends/reference/workloads/BaseIterator.hpp
index e09371fd96..2d27951b73 100644
--- a/src/backends/reference/workloads/BaseIterator.hpp
+++ b/src/backends/reference/workloads/BaseIterator.hpp
@@ -260,44 +260,6 @@ private:
 
 };
 
-class BFloat16Decoder : public TypedIterator<const BFloat16, Decoder<float>>
-{
-public:
-    BFloat16Decoder(const BFloat16* data)
-        : TypedIterator(data) {}
-
-    BFloat16Decoder()
-        : BFloat16Decoder(nullptr) {}
-
-    float Get() const override
-    {
-        float val = 0.f;
-        armnnUtils::FloatingPointConverter::ConvertBFloat16ToFloat32(m_Iterator, 1, &val);
-        return val;
-    }
-    std::vector<float> DecodeTensor (const TensorShape& tensorShape,
-                                     const bool isDepthwise) override
-    {
-        IgnoreUnused(isDepthwise);
-
-        const unsigned int size = tensorShape.GetNumElements();
-        std::vector<float> decodedTensor;
-        decodedTensor.reserve(size);
-
-        for (uint32_t i = 0; i < size; ++i)
-        {
-            this->operator[](i);
-
-            float val = 0.f;
-            armnnUtils::FloatingPointConverter::ConvertBFloat16ToFloat32(m_Iterator, 1, &val);
-            decodedTensor.emplace_back(val);
-        }
-
-        return decodedTensor;
-    }
-
-};
-
 class Float16Decoder : public TypedIterator<const Half, Decoder<float>>
 {
 public:
@@ -624,28 +586,6 @@ private:
     const int32_t m_Offset;
 };
 
-class BFloat16Encoder : public TypedIterator<armnn::BFloat16, Encoder<float>>
-{
-public:
-    BFloat16Encoder(armnn::BFloat16* data)
-        : TypedIterator(data) {}
-
-    BFloat16Encoder()
-        : BFloat16Encoder(nullptr) {}
-
-    void Set(float right) override
-    {
-        armnnUtils::FloatingPointConverter::ConvertFloat32ToBFloat16(&right, 1, m_Iterator);
-    }
-
-    float Get() const override
-    {
-        float val = 0.f;
-        armnnUtils::FloatingPointConverter::ConvertBFloat16ToFloat32(m_Iterator, 1, &val);
-        return val;
-    }
-};
-
 class Float16Encoder : public TypedIterator<Half, Encoder<float>>
 {
 public:
-- 
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