1 files changed, 70 insertions, 0 deletions
diff --git a/flang/unittests/RuntimeGTest/MiscIntrinsic.cpp b/flang/unittests/RuntimeGTest/MiscIntrinsic.cpp
new file mode 100644
index 000000000000..62213d01021e
--- /dev/null
+++ b/flang/unittests/RuntimeGTest/MiscIntrinsic.cpp
@@ -0,0 +1,70 @@
+//===-- flang/unittests/RuntimeGTest/MiscIntrinsic.cpp ----------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "gtest/gtest.h"
+#include "tools.h"
+#include "../../runtime/allocatable.h"
+#include "../../runtime/cpp-type.h"
+#include "../../runtime/descriptor.h"
+#include "../../runtime/misc-intrinsic.h"
+
+using namespace Fortran::runtime;
+
+// TRANSFER examples from Fortran 2018
+
+TEST(MiscIntrinsic, TransferScalar) {
+  StaticDescriptor<2, true, 2> staticDesc[2];
+  auto &result{staticDesc[0].descriptor()};
+  auto source{MakeArray<TypeCategory::Integer, 4>(
+      std::vector<int>{}, std::vector<std::int32_t>{1082130432})};
+  auto &mold{staticDesc[1].descriptor()};
+  mold.Establish(TypeCategory::Real, 4, nullptr, 0);
+  RTNAME(Transfer)(result, *source, mold, __FILE__, __LINE__);
+  EXPECT_EQ(result.rank(), 0);
+  EXPECT_EQ(result.type().raw(), (TypeCode{TypeCategory::Real, 4}.raw()));
+  EXPECT_EQ(*result.OffsetElement<float>(), 4.0);
+  result.Destroy();
+}
+
+TEST(MiscIntrinsic, TransferMold) {
+  StaticDescriptor<2, true, 2> staticDesc[2];
+  auto &result{staticDesc[0].descriptor()};
+  auto source{MakeArray<TypeCategory::Real, 4>(
+      std::vector<int>{3}, std::vector<float>{1.1F, 2.2F, 3.3F})};
+  auto &mold{staticDesc[1].descriptor()};
+  SubscriptValue extent[1]{1};
+  mold.Establish(TypeCategory::Complex, 4, nullptr, 1, extent);
+  RTNAME(Transfer)(result, *source, mold, __FILE__, __LINE__);
+  EXPECT_EQ(result.rank(), 1);
+  EXPECT_EQ(result.GetDimension(0).LowerBound(), 1);
+  EXPECT_EQ(result.GetDimension(0).Extent(), 2);
+  EXPECT_EQ(result.type().raw(), (TypeCode{TypeCategory::Complex, 4}.raw()));
+  EXPECT_EQ(result.OffsetElement<float>()[0], 1.1F);
+  EXPECT_EQ(result.OffsetElement<float>()[1], 2.2F);
+  EXPECT_EQ(result.OffsetElement<float>()[2], 3.3F);
+  EXPECT_EQ(result.OffsetElement<float>()[3], 0.0F);
+  result.Destroy();
+}
+
+TEST(MiscIntrinsic, TransferSize) {
+  StaticDescriptor<2, true, 2> staticDesc[2];
+  auto &result{staticDesc[0].descriptor()};
+  auto source{MakeArray<TypeCategory::Real, 4>(
+      std::vector<int>{3}, std::vector<float>{1.1F, 2.2F, 3.3F})};
+  auto &mold{staticDesc[1].descriptor()};
+  SubscriptValue extent[1]{1};
+  mold.Establish(TypeCategory::Complex, 4, nullptr, 1, extent);
+  RTNAME(TransferSize)(result, *source, mold, __FILE__, __LINE__, 1);
+  EXPECT_EQ(result.rank(), 1);
+  EXPECT_EQ(result.GetDimension(0).LowerBound(), 1);
+  EXPECT_EQ(result.GetDimension(0).Extent(), 1);
+  EXPECT_EQ(result.type().raw(), (TypeCode{TypeCategory::Complex, 4}.raw()));
+  EXPECT_EQ(result.OffsetElement<float>()[0], 1.1F);
+  EXPECT_EQ(result.OffsetElement<float>()[1], 2.2F);
+  result.Destroy();
+}