chore: import upstream snapshot with attribution

test/cpp/phi/kernels/strided_memcpy_test.cc

@@ -0,0 +1,172 @@
+/* Copyright (c) 2023 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 "paddle/phi/kernels/funcs/strided_memcpy.h"
+#include <array>
+
+#include "gtest/gtest.h"
+#include "paddle/phi/backends/context_pool.h"
+#include "paddle/phi/common/memory_utils.h"
+namespace phi {
+namespace tests {
+
+TEST(StridedMemcpy, CPUCrop) {
+  // clang-format off
+  int src[] = {// NOLINT
+      0, 1, 2, 0, 0,
+      0, 3, 4, 0, 0,
+      0, 0, 0, 0, 0,
+  };
+  // clang-format on
+
+  phi::DDim src_stride({5, 1});
+
+  std::array<int, 4> dst = {};
+  phi::DDim dst_dim({2, 2});
+  phi::DDim dst_stride({2, 1});
+
+  phi::CPUContext ctx;
+  phi::funcs::StridedMemcpy<int>(
+      ctx, src + 1, src_stride, dst_dim, dst_stride, dst.data());
+
+  ASSERT_EQ(1, dst[0]);
+  ASSERT_EQ(2, dst[1]);
+  ASSERT_EQ(3, dst[2]);
+  ASSERT_EQ(4, dst[3]);
+}
+
+TEST(StridedMemcpy, CPUConcat) {
+  // clang-format off
+  int src[] = { // NOLINT
+      1, 2,
+      3, 4
+  };
+  // clang-format on
+
+  std::array<int, 8> dst = {};
+  phi::DDim src_stride({2, 1});
+  phi::DDim dst_dim({2, 2});
+  phi::DDim dst_stride({4, 1});
+  phi::CPUContext ctx;
+
+  phi::funcs::StridedMemcpy<int>(
+      ctx, src, src_stride, dst_dim, dst_stride, dst.data());
+  phi::funcs::StridedMemcpy<int>(
+      ctx, src, src_stride, dst_dim, dst_stride, dst.data() + 2);
+
+  // clang-format off
+  int expect_dst[] = { // NOLINT
+      1, 2, 1, 2,
+      3, 4, 3, 4
+  };
+  // clang-format on
+  for (size_t i = 0; i < sizeof(expect_dst) / sizeof(int); ++i) {
+    ASSERT_EQ(expect_dst[i], dst[i]);
+  }
+}
+
+#if defined(PADDLE_WITH_CUDA) || defined(PADDLE_WITH_HIP)
+TEST(StridedMemcpy, GPUCrop) {
+  // clang-format off
+  std::array<int, 15> src = {
+      0, 1, 2, 0, 0,
+      0, 3, 4, 0, 0,
+      0, 0, 0, 0, 0,
+  };
+  // clang-format on
+
+  phi::GPUPlace gpu0(0);
+  phi::CPUPlace cpu;
+
+  phi::DeviceContextPool& pool = phi::DeviceContextPool::Instance();
+  auto* ctx = reinterpret_cast<phi::GPUContext*>(pool.Get(phi::GPUPlace()));
+
+  auto src_allocation = phi::memory_utils::Alloc(gpu0, sizeof(src));
+
+  int* gpu_src = reinterpret_cast<int*>(src_allocation->ptr());
+  memory_utils::Copy(
+      gpu0, gpu_src, cpu, src.data(), sizeof(src), ctx->stream());
+
+  phi::DDim src_stride({5, 1});
+
+  std::array<int, 4> dst = {};
+  auto dst_allocation = phi::memory_utils::Alloc(gpu0, sizeof(dst));
+  int* gpu_dst = reinterpret_cast<int*>(dst_allocation->ptr());
+
+  phi::DDim dst_dim({2, 2});
+  phi::DDim dst_stride({2, 1});
+
+  phi::funcs::StridedMemcpy<int>(
+      *ctx, gpu_src + 1, src_stride, dst_dim, dst_stride, gpu_dst);
+
+  memory_utils::Copy(
+      cpu, dst.data(), gpu0, gpu_dst, sizeof(dst), ctx->stream());
+  ctx->Wait();
+
+  ASSERT_EQ(1, dst[0]);
+  ASSERT_EQ(2, dst[1]);
+  ASSERT_EQ(3, dst[2]);
+  ASSERT_EQ(4, dst[3]);
+}
+
+TEST(StridedMemcpy, GPUConcat) {
+  // clang-format off
+  std::array<int, 4> src = {
+      1, 2,
+      3, 4
+  };
+  // clang-format on
+
+  phi::GPUPlace gpu0(0);
+  phi::CPUPlace cpu;
+
+  phi::DeviceContextPool& pool = phi::DeviceContextPool::Instance();
+  auto* ctx = reinterpret_cast<phi::GPUContext*>(pool.Get(phi::GPUPlace()));
+
+  auto gpu_src_allocation = phi::memory_utils::Alloc(gpu0, sizeof(src));
+  int* gpu_src = reinterpret_cast<int*>(gpu_src_allocation->ptr());
+  memory_utils::Copy(
+      gpu0, gpu_src, cpu, src.data(), sizeof(src), ctx->stream());
+
+  std::array<int, 8> dst = {};
+  auto gpu_dst_allocation = phi::memory_utils::Alloc(gpu0, sizeof(dst));
+  int* gpu_dst = reinterpret_cast<int*>(gpu_dst_allocation->ptr());
+
+  phi::DDim src_stride({2, 1});
+  phi::DDim dst_dim({2, 2});
+  phi::DDim dst_stride({4, 1});
+
+  phi::funcs::StridedMemcpy<int>(
+      *ctx, gpu_src, src_stride, dst_dim, dst_stride, gpu_dst);
+  phi::funcs::StridedMemcpy<int>(
+      *ctx, gpu_src, src_stride, dst_dim, dst_stride, gpu_dst + 2);
+
+  memory_utils::Copy(
+      cpu, dst.data(), gpu0, gpu_dst, sizeof(dst), ctx->stream());
+  ctx->Wait();
+
+  // clang-format off
+  std::array<int, 8> expect_dst = {
+      1, 2, 1, 2,
+      3, 4, 3, 4
+  };
+  // clang-format on
+  for (size_t i = 0; i < sizeof(expect_dst) / sizeof(int); ++i) {
+    ASSERT_EQ(expect_dst[i], dst[i]);
+  }
+}
+
+#endif
+}  // namespace tests
+}  // namespace phi