From 8ba01ba7bd4f8f0c801d9a636594edeb415478e6 Mon Sep 17 00:00:00 2001
From: "A. Unique TensorFlower" <gardener@tensorflow.org>
Date: Fri, 2 Aug 2019 14:41:07 -0700
Subject: [PATCH] Add FP16 version of Softmax layer, as a custom op.

PiperOrigin-RevId: 261394339
---
 .../lite/experimental/kernels/fp16/BUILD      | 17 -----
 .../lite/experimental/kernels/fp16/common.h   | 75 -------------------
 2 files changed, 92 deletions(-)
 delete mode 100644 tensorflow/lite/experimental/kernels/fp16/BUILD
 delete mode 100644 tensorflow/lite/experimental/kernels/fp16/common.h

diff --git a/tensorflow/lite/experimental/kernels/fp16/BUILD b/tensorflow/lite/experimental/kernels/fp16/BUILD
deleted file mode 100644
index 14f9ff42532..00000000000
--- a/tensorflow/lite/experimental/kernels/fp16/BUILD
+++ /dev/null
@@ -1,17 +0,0 @@
-# Experimental FP16-on-CPU implementation of a few select layers.
-
-package(
-    licenses = ["notice"],  # Apache 2.0
-)
-
-cc_library(
-    name = "common",
-    hdrs = [
-        "common.h",
-    ],
-    deps = [
-        "//tensorflow/lite:framework",
-        "//tensorflow/lite/c:c_api_internal",
-        "//tensorflow/lite/kernels/internal:tensor",
-    ],
-)
diff --git a/tensorflow/lite/experimental/kernels/fp16/common.h b/tensorflow/lite/experimental/kernels/fp16/common.h
deleted file mode 100644
index 8b82f1481b4..00000000000
--- a/tensorflow/lite/experimental/kernels/fp16/common.h
+++ /dev/null
@@ -1,75 +0,0 @@
-/* Copyright 2019 The TensorFlow Authors. All Rights Reserved.
-
-Licensed under the Apache License, Version 2.0 (the "License");
-you may not use this file except in compliance with the License.
-You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing, software
-distributed under the License is distributed on an "AS IS" BASIS,
-WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-See the License for the specific language governing permissions and
-limitations under the License.
-==============================================================================*/
-#ifndef TENSORFLOW_LITE_EXPERIMENTAL_KERNELS_FP16_COMMON_H_
-#define TENSORFLOW_LITE_EXPERIMENTAL_KERNELS_FP16_COMMON_H_
-
-// Experimental half precision floating point type compatible with IEEE 754-2008
-// binary16 format.
-
-#include "tensorflow/lite/c/c_api_internal.h"
-#include "tensorflow/lite/interpreter.h"
-#include "tensorflow/lite/kernels/internal/tensor_ctypes.h"
-
-#if __GNUC__ && ((__clang__ && (__aarch64__ || __arm__)) || \
-                 (!__cplusplus && __ARM_FP16_FORMAT_IEEE))
-#define TFL_HAS_IEEE_FP16 1
-#endif
-#if __GNUC__ && \
-    (__clang__ || __ARM_FP16_FORMAT_IEEE || __ARM_FP16_FORMAT_ALTERNATIVE)
-#define TFL_HAS_ARM_FP16 1
-#endif
-
-namespace tflite {
-
-#if TFL_HAS_IEEE_FP16
-typedef _Float16 tfl_float16_t;
-#elif TFL_HAS_ARM_FP16
-typedef __fp16 tfl_float16_t;
-#else
-// TODO(b/138252484): implement tfl_float16_t using third_party/FP16
-#error "This header requires FP16 support."
-#endif
-
-// Check tfl_float16_t is 'compatible' with the placeholder type.
-static_assert(sizeof(tfl_float16_t) == sizeof(TfLiteFloat16),
-              "Size of real and placeholder FP16 types don't match.");
-static_assert(alignof(tfl_float16_t) == alignof(TfLiteFloat16),
-              "Alignment of real and placeholder FP16 types don't match.");
-
-// Specialization of typeToTfLiteType with tfl_float16_t.
-// Template is declared in interpreter.h
-template <>
-constexpr TfLiteType typeToTfLiteType<tfl_float16_t>() {
-  return kTfLiteFloat16;
-}
-
-// Specialization of GetTensorData with tfl_float16_t.
-// Template is declared in kernels/internal/tensor_ctypes.h
-template <>
-inline tfl_float16_t* GetTensorData(TfLiteTensor* tensor) {
-  return tensor != nullptr ? reinterpret_cast<tfl_float16_t*>(tensor->data.f16)
-                           : nullptr;
-}
-
-template <>
-inline const tfl_float16_t* GetTensorData(const TfLiteTensor* tensor) {
-  return tensor != nullptr
-             ? reinterpret_cast<const tfl_float16_t*>(tensor->data.f16)
-             : nullptr;
-}
-
-}  // namespace tflite
-
-#endif  // TENSORFLOW_LITE_EXPERIMENTAL_KERNELS_FP16_COMMON_H_