chore: import upstream snapshot with attribution

test/cpp/cinn/lang/CMakeLists.txt

@@ -0,0 +1,2 @@
+cinn_cc_test(test_compute SRCS compute_test.cc DEPS cinncore)
+cinn_cc_test(test_cinn_packed_func SRCS packed_func_test.cc DEPS cinncore)

test/cpp/cinn/lang/compute_test.cc

@@ -0,0 +1,39 @@
+// Copyright (c) 2021 CINN 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/cinn/lang/compute.h"
+
+#include <gtest/gtest.h>
+
+#include "paddle/cinn/cinn.h"
+#include "paddle/cinn/ir/op/ir_operators.h"
+#include "paddle/cinn/ir/tensor.h"
+#include "paddle/cinn/lang/placeholder.h"
+
+namespace cinn {
+namespace lang {
+
+TEST(Call, basic) {
+  Expr M(100);
+
+  Placeholder<float> x("x", {M, Expr(10)});
+  Placeholder<float> y("y", {M, Expr(10)});
+
+  std::vector<ReturnType> return_types(
+      {{Float(32), std::vector<Expr>{{M, Expr(20)}}, "C"}});
+  auto tensors = CallLowered("lowered_fun0", {Expr(x), Expr(y)}, return_types);
+}
+
+}  // namespace lang
+}  // namespace cinn

test/cpp/cinn/lang/packed_func_test.cc

@@ -0,0 +1,96 @@
+// Copyright (c) 2021 CINN 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/cinn/lang/packed_func.h"
+
+#include <gtest/gtest.h>
+
+#include "paddle/cinn/ir/ir_printer.h"
+#include "paddle/cinn/ir/op/ir_operators.h"
+#include "paddle/cinn/utils/string.h"
+
+namespace cinn {
+namespace lang {
+
+TEST(Function, test) {
+  PackedFunc::body_t func_body = [](Args args, RetValue* ret) {
+    int a = args[0];
+    int b = args[1];
+    *ret = (a + b);
+  };
+  PackedFunc func(func_body);
+
+  int c = func(1, 2);
+  LOG(INFO) << "c " << c;
+}
+
+TEST(Function, test1) {
+  PackedFunc::body_t body = [](Args args, RetValue* ret) {
+    auto* msg = static_cast<const char*>(args[0]);
+    (*ret) = msg;
+  };
+
+  PackedFunc func(body);
+  const char* msg = "hello world";
+  char* c = func(msg);
+  LOG(INFO) << static_cast<char*>(c);
+}
+
+TEST(Function, Expr) {
+  PackedFunc::body_t body = [](Args args, RetValue* ret) {
+    Expr a = args[0];
+    Expr b = args[1];
+
+    ASSERT_EQ(a->__ref_count__.val(), 4);
+    ASSERT_EQ(b->__ref_count__.val(), 4);
+
+    Expr c = a + b;
+    (*ret) = CINNValue(c);
+  };
+
+  PackedFunc func(body);
+
+  Expr a(1);
+  Expr b(2);
+  ASSERT_EQ(a->__ref_count__.val(), 1);
+  ASSERT_EQ(b->__ref_count__.val(), 1);
+
+  Expr ret = func(a, b);
+
+  ASSERT_EQ(utils::GetStreamCnt(ret), "(1 + 2)");
+}
+
+TEST(Function, ReturnMultiValue) {
+  PackedFunc::body_t body = [](Args args, RetValue* ret) {
+    int a = args[0];
+    int b = args[1];
+    int c = a + b;
+    int d = a - b;
+
+    *ret = cinn::common::CINNValuePack{
+        {cinn::common::CINNValue(c), cinn::common::CINNValue(d)}};
+  };
+
+  PackedFunc func(body);
+
+  cinn::common::CINNValuePack ret = func(1, 2);
+  int c = ret[0];
+  int d = ret[1];
+
+  EXPECT_EQ(c, 3);
+  EXPECT_EQ(d, -1);
+}
+
+}  // namespace lang
+}  // namespace cinn