chore: import upstream snapshot with attribution

test/cpp/phi/api/test_scale_benchmark.cc

@@ -0,0 +1,64 @@
+/* Copyright (c) 2021 PaddlePaddle 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. */
+
+#include <gtest/gtest.h>
+
+#include <memory>
+
+#include "paddle/phi/api/include/api.h"
+#include "paddle/phi/api/lib/utils/allocator.h"
+#include "paddle/phi/core/dense_tensor.h"
+#include "paddle/phi/core/kernel_registry.h"
+#include "test/cpp/phi/api/scale_api.h"
+#include "test/cpp/phi/core/timer.h"
+
+PD_DECLARE_KERNEL(full, CPU, ALL_LAYOUT);
+
+namespace paddle {
+namespace tests {
+
+TEST(API, scale) {
+  auto x = experimental::full({3, 4}, 1.0, phi::DataType::FLOAT32, CPUPlace());
+
+  const size_t cycles = 300;
+  phi::tests::Timer timer;
+  double t1{}, t2{}, t3{};
+
+  for (size_t i = 0; i < cycles; ++i) {
+    timer.tic();
+    for (size_t i = 0; i < cycles; ++i) {
+      auto out = experimental::scale_kernel_context(x, 2.0, 1.0, true);
+    }
+    t1 += timer.toc();
+
+    timer.tic();
+    for (size_t i = 0; i < cycles; ++i) {
+      auto out = experimental::scale(x, 2.0, 1.0, true);
+    }
+    t2 += timer.toc();
+
+    timer.tic();
+    for (size_t i = 0; i < cycles; ++i) {
+      auto out = experimental::scale_switch_case(x, 2.0, 1.0, true);
+    }
+    t3 += timer.toc();
+  }
+
+  LOG(INFO) << "The cost of kernel_context is " << t1 << "ms.";
+  LOG(INFO) << "The cost of variadic_args_kernel_fn is " << t2 << "ms.";
+  LOG(INFO) << "The cost of switch_case is " << t3 << "ms.";
+}
+
+}  // namespace tests
+}  // namespace paddle