Index: llvm/unittests/Transforms/IPO/CMakeLists.txt
===================================================================
--- llvm/unittests/Transforms/IPO/CMakeLists.txt
+++ llvm/unittests/Transforms/IPO/CMakeLists.txt
@@ -8,3 +8,5 @@
   LowerTypeTests.cpp
   WholeProgramDevirt.cpp
   )
+
+add_subdirectory(OpenMPOpt)
Index: llvm/unittests/Transforms/IPO/OpenMPOpt/CMakeLists.txt
===================================================================
--- /dev/null
+++ llvm/unittests/Transforms/IPO/OpenMPOpt/CMakeLists.txt
@@ -0,0 +1,11 @@
+set(LLVM_LINK_COMPONENTS
+  ipo
+  Core
+  Analysis
+  AsmParser
+  FrontendOpenMP
+  )
+
+add_llvm_unittest(OpenMPOptUnitTests
+  HideMemTransferLatencyTest.cpp
+  )
\ No newline at end of file
Index: llvm/unittests/Transforms/IPO/OpenMPOpt/HideMemTransferLatencyTest.cpp
===================================================================
--- /dev/null
+++ llvm/unittests/Transforms/IPO/OpenMPOpt/HideMemTransferLatencyTest.cpp
@@ -0,0 +1,43 @@
+//===- HideMemTransferLatencyTest.cpp -------------------------------------===//
+//
+// 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 "OpenMPOptTest.h"
+
+namespace {
+
+class HideMemTransferLatencyTest : public OpenMPOptTest {
+protected:
+  /// This stores the runtime calls for further use within each test.
+  SmallVector<CallBase *, 16> MemTransferCalls;
+
+  void getCallSites(const char *ModuleString) {
+    auto M = parseModuleString(ModuleString);
+    initializeOMPInfoCache(*M);
+
+    auto &RFI = OMPInfoCache->RFIs[OMPRTL___tgt_target_data_begin];
+    auto GetCallSites = [&](Use &U, Function &Decl) {
+      auto *RTCall = OMPInformationCache::getCallIfRegularCall(U, &RFI);
+      if (!RTCall)
+        return false;
+      MemTransferCalls.push_back(RTCall);
+      return false;
+    };
+    RFI.foreachUse(GetCallSites);
+    EXPECT_FALSE(MemTransferCalls.empty());
+  }
+};
+
+TEST_F(HideMemTransferLatencyTest, GetValuesInOfflArrays) {
+// TODO: Update this ModuleString.
+const char *ModuleString = "";
+getCallSites(ModuleString);
+
+EXPECT_TRUE(true);
+}
+
+} // end anonymous namespace
\ No newline at end of file
Index: llvm/unittests/Transforms/IPO/OpenMPOpt/OpenMPOptTest.h
===================================================================
--- /dev/null
+++ llvm/unittests/Transforms/IPO/OpenMPOpt/OpenMPOptTest.h
@@ -0,0 +1,63 @@
+//===- OpenMPOptTest.h - Base file for OpenMPOpt unittests ----------------===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_UNITTESTS_TRANSFORMS_IPO_OPENMPOPT_H
+#define LLVM_UNITTESTS_TRANSFORMS_IPO_OPENMPOPT_H
+
+#include "../../../../lib/Transforms/IPO/OpenMPOptPriv.h"
+#include "llvm/AsmParser/Parser.h"
+#include "gtest/gtest.h"
+
+using namespace llvm;
+
+namespace {
+
+class OpenMPOptTest : public ::testing::Test {
+protected:
+  std::unique_ptr<OMPInformationCache> OMPInfoCache;
+  std::unique_ptr<LLVMContext> Ctx;
+
+  OpenMPOptTest() : Ctx(new LLVMContext) {}
+
+  /// Initializes OMPInfoCache attribute cache given a module \p M.
+  /// This must be called before using OMPInfoCache.
+  void initializeOMPInfoCache(Module &M) {
+    CallGraph CG(M);
+    scc_iterator<CallGraph *> CGI = scc_begin(&CG);
+    CallGraphSCC CGSCC(CG, &CGI);
+
+    SmallPtrSet<Function *, 16> ModuleSlice;
+    SmallVector<Function *, 16> SCC;
+    for (CallGraphNode *CGN : CGSCC)
+      if (Function *Fn = CGN->getFunction())
+        if (!Fn->isDeclaration()) {
+          SCC.push_back(Fn);
+          ModuleSlice.insert(Fn);
+        }
+
+    EXPECT_FALSE(SCC.empty());
+
+    AnalysisGetter AG;
+    SetVector<Function *> Functions(SCC.begin(), SCC.end());
+    BumpPtrAllocator Allocator;
+    OMPInfoCache = std::make_unique<OMPInformationCache>(
+        *(Functions.back()->getParent()), AG, Allocator, /*CGSCC*/ &Functions,
+        ModuleSlice);
+  }
+
+  std::unique_ptr<Module> parseModuleString(const char *ModuleString) {
+    SMDiagnostic Err;
+    auto M = parseAssemblyString(ModuleString, Err, *Ctx);
+    EXPECT_TRUE(M);
+    return M;
+  }
+};
+
+} // end anonymous namespace
+
+#endif // LLVM_UNITTESTS_TRANSFORMS_IPO_OPENMPOPT_H
\ No newline at end of file