Index: test-suite/trunk/External/CUDA/CMakeLists.txt
===================================================================
--- test-suite/trunk/External/CUDA/CMakeLists.txt
+++ test-suite/trunk/External/CUDA/CMakeLists.txt
@@ -57,14 +57,21 @@
     cuda_glob(_sources ${FileGlob})
     set(_executable ${Name}-${VariantSuffix})
     set(_executable_path ${CMAKE_CURRENT_BINARY_DIR}/${_executable})
+    llvm_test_run()
+    set(REFERENCE_OUTPUT)
     # Verify reference output if it exists.
     if(EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/${Name}.reference_output)
-      llvm_test_traditional(${Name})
+      set(REFERENCE_OUTPUT ${Name}.reference_output)
+      llvm_test_verify(WORKDIR ${CMAKE_CURRENT_BINARY_DIR}
+        ${FPCMP} %o ${REFERENCE_OUTPUT}-${VariantSuffix}
+      )
+      llvm_test_executable(${_executable} ${_sources})
+      llvm_test_data(${_executable}
+                     DEST_SUFFIX "-${VariantSuffix}"
+                     ${REFERENCE_OUTPUT})
     else()
-      # otherwise just run the executable.
-      llvm_test_run()
+      llvm_test_executable(${_executable} ${_sources})
     endif()
-    llvm_test_executable(${_executable} ${_sources})
     target_compile_options(${_executable} PUBLIC ${VariantCPPFLAGS})
     if(VariantLibs)
       target_link_libraries(${_executable} ${VariantLibs})
Index: test-suite/trunk/cmake/modules/TestSuite.cmake
===================================================================
--- test-suite/trunk/cmake/modules/TestSuite.cmake
+++ test-suite/trunk/cmake/modules/TestSuite.cmake
@@ -18,26 +18,28 @@
 # directory of the benchmark executable.
 # Paths are interepreted relative to CMAKE_CURRENT_SOURCE_DIR by default but
 # this can be changed with the SOURCE_DIR argument.
+# If DEST_SUFFIX is specified, it's appended to the destination file names.
 function(llvm_test_data target)
-  cmake_parse_arguments(_LTDARGS "MUST_COPY" "SOURCE_DIR" "" ${ARGN})
+  cmake_parse_arguments(_LTDARGS "MUST_COPY" "SOURCE_DIR;DEST_SUFFIX" "" ${ARGN})
   set(SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR})
   if(_LTDARGS_SOURCE_DIR)
     set(SOURCE_DIR ${_LTDARGS_SOURCE_DIR})
   endif()
+  set(SUFFIX ${_LTDARGS_DEST_SUFFIX})
   foreach(file ${_LTDARGS_UNPARSED_ARGUMENTS})
     set(full_path ${SOURCE_DIR}/${file})
     if(_LTDARGS_MUST_COPY OR TEST_SUITE_COPY_DATA)
       if(IS_DIRECTORY ${full_path})
-        llvm_copy_dir(${target} $<TARGET_FILE_DIR:${target}>/${file} ${full_path})
+        llvm_copy_dir(${target} $<TARGET_FILE_DIR:${target}>/${file}${SUFFIX} ${full_path})
       else()
-        llvm_copy(${target} $<TARGET_FILE_DIR:${target}>/${file} ${full_path})
+        llvm_copy(${target} $<TARGET_FILE_DIR:${target}>/${file}${SUFFIX} ${full_path})
       endif()
     else()
       get_filename_component(file_subdir ${file} DIRECTORY)
       if(file_subdir)
         llvm_make_directory(${target} ${file_subdir})
       endif()
-      llvm_create_symlink(${target} $<TARGET_FILE_DIR:${target}>/${file} ${full_path})
+      llvm_create_symlink(${target} $<TARGET_FILE_DIR:${target}>/${file}${SUFFIX} ${full_path})
     endif()
   endforeach()
 endfunction()