[test-suite, CUDA] Update CUDA cmake files.

This should unbreak CUDA buildbots.
The problem is that CUDA test suite is generating multiple
test executables that all use the same reference output file
and that resulted in multiple compilation jobs attempting to
create the same symlink at the same time.

This patch adds a SUFFIX parameter to make it possible to append
a suffix to the target file name and that allows us to avoid name clashes.

Differential Revision: https://reviews.llvm.org/D51663

llvm-svn: 341430

Author: Artem-B

External/CUDA/CMakeLists.txt

@@ -57,14 +57,21 @@ macro(create_one_local_test_f Name FileGlob FilterRegex)
     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})

cmake/modules/TestSuite.cmake

@@ -18,26 +18,28 @@ mark_as_advanced(TEST_SUITE_COPY_DATA)
 # 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()