Index: llvm/cmake/modules/AddLLVM.cmake
===================================================================
--- llvm/cmake/modules/AddLLVM.cmake
+++ llvm/cmake/modules/AddLLVM.cmake
@@ -1112,7 +1112,7 @@
   # executable must be linked with it in order to provide consistent
   # API for all shared libaries loaded by this executable.
   target_link_libraries(${test_name} PRIVATE gtest_main gtest ${LLVM_PTHREAD_LIB})
-
+  
   add_dependencies(${test_suite} ${test_name})
   get_target_property(test_suite_folder ${test_suite} FOLDER)
   if (NOT ${test_suite_folder} STREQUAL "NOTFOUND")
@@ -1120,6 +1120,35 @@
   endif ()
 endfunction()
 
+function(add_llvm_unittest_inputs test_name inputs)
+  set(target_name copy_inputs_${test_name})
+
+  set(input_paths "")
+  set(output_paths "")
+  foreach (INPUT ${inputs})
+    list(APPEND input_paths ${CMAKE_CURRENT_SOURCE_DIR}/Inputs/${INPUT})
+    list(APPEND output_paths ${CMAKE_CURRENT_BINARY_DIR}/${CMAKE_CFG_INTDIR}/Inputs/${INPUT})
+  endforeach()
+  
+  add_custom_target(
+    ${target_name}
+    DEPENDS ${output_paths}
+    COMMENT "Copying input files for ${test_name}.")
+  
+  foreach (INPUT ${inputs})
+    set(input_path ${CMAKE_CURRENT_SOURCE_DIR}/Inputs/${INPUT})
+    set(output_path ${CMAKE_CURRENT_BINARY_DIR}/${CMAKE_CFG_INTDIR}/Inputs/${INPUT})
+    
+    add_custom_command(
+      TARGET "copy_inputs_${test_name}"
+      POST_BUILD
+      COMMAND "${CMAKE_COMMAND}" -E copy_if_different ${input_path} ${output_path}
+      COMMENT "Copying ${INPUT} to binary directory.")
+  endforeach()
+  add_dependencies(${test_name} "copy_inputs_${test_name}")
+endfunction()
+
+
 # Generic support for adding a benchmark.
 function(add_benchmark benchmark_name)
   if( NOT LLVM_BUILD_BENCHMARKS )
Index: llvm/include/llvm/Testing/Support/SupportHelpers.h
===================================================================
--- llvm/include/llvm/Testing/Support/SupportHelpers.h
+++ llvm/include/llvm/Testing/Support/SupportHelpers.h
@@ -10,10 +10,12 @@
 #ifndef LLVM_TESTING_SUPPORT_SUPPORTHELPERS_H
 #define LLVM_TESTING_SUPPORT_SUPPORTHELPERS_H
 
-#include "llvm/ADT/StringRef.h"
+#include "llvm/ADT/SmallString.h"
 #include "llvm/Support/Error.h"
 #include "gtest/gtest-printers.h"
 
+#include <string>
+
 namespace llvm {
 namespace detail {
 struct ErrorHolder {
@@ -52,6 +54,10 @@
   }
 }
 } // namespace detail
+
+namespace unittest {
+SmallString<128> getInputFileDirectory();
+}
 } // namespace llvm
 
 #endif
Index: llvm/lib/Testing/Support/CMakeLists.txt
===================================================================
--- llvm/lib/Testing/Support/CMakeLists.txt
+++ llvm/lib/Testing/Support/CMakeLists.txt
@@ -3,6 +3,7 @@
 
 add_llvm_library(LLVMTestingSupport
   Error.cpp
+  SupportHelpers.cpp
 
   BUILDTREE_ONLY
   
Index: llvm/lib/Testing/Support/SupportHelpers.cpp
===================================================================
--- /dev/null
+++ llvm/lib/Testing/Support/SupportHelpers.cpp
@@ -0,0 +1,19 @@
+
+#include "llvm/Testing/Support/SupportHelpers.h"
+
+#include "llvm/ADT/SmallString.h"
+#include "llvm/ADT/Twine.h"
+#include "llvm/Support/FileSystem.h"
+#include "llvm/Support/Path.h"
+
+using namespace llvm;
+using namespace llvm::unittest;
+
+extern const char *TestMainArgv0;
+
+SmallString<128> llvm::unittest::getInputFileDirectory() {
+  llvm::SmallString<128> Result = llvm::sys::path::parent_path(TestMainArgv0);
+  llvm::sys::fs::make_absolute(Result);
+  llvm::sys::path::append(Result, "Inputs");
+  return Result;
+}