--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/compiler-rt/cmake/Modules/AddCompilerRT.cmake	Thu Feb 13 15:10:13 2020 +0900
@@ -0,0 +1,690 @@
+include(ExternalProject)
+include(CompilerRTUtils)
+
+function(set_target_output_directories target output_dir)
+  # For RUNTIME_OUTPUT_DIRECTORY variable, Multi-configuration generators
+  # append a per-configuration subdirectory to the specified directory.
+  # To avoid the appended folder, the configuration specific variable must be
+  # set 'RUNTIME_OUTPUT_DIRECTORY_${CONF}':
+  # RUNTIME_OUTPUT_DIRECTORY_DEBUG, RUNTIME_OUTPUT_DIRECTORY_RELEASE, ...
+  if(CMAKE_CONFIGURATION_TYPES)
+    foreach(build_mode ${CMAKE_CONFIGURATION_TYPES})
+      string(TOUPPER "${build_mode}" CONFIG_SUFFIX)
+      set_target_properties("${target}" PROPERTIES
+          "ARCHIVE_OUTPUT_DIRECTORY_${CONFIG_SUFFIX}" ${output_dir}
+          "LIBRARY_OUTPUT_DIRECTORY_${CONFIG_SUFFIX}" ${output_dir}
+          "RUNTIME_OUTPUT_DIRECTORY_${CONFIG_SUFFIX}" ${output_dir})
+    endforeach()
+  else()
+    set_target_properties("${target}" PROPERTIES
+        ARCHIVE_OUTPUT_DIRECTORY ${output_dir}
+        LIBRARY_OUTPUT_DIRECTORY ${output_dir}
+        RUNTIME_OUTPUT_DIRECTORY ${output_dir})
+  endif()
+endfunction()
+
+# Tries to add an "object library" target for a given list of OSs and/or
+# architectures with name "<name>.<arch>" for non-Darwin platforms if
+# architecture can be targeted, and "<name>.<os>" for Darwin platforms.
+# add_compiler_rt_object_libraries(<name>
+#                                  OS <os names>
+#                                  ARCHS <architectures>
+#                                  SOURCES <source files>
+#                                  CFLAGS <compile flags>
+#                                  DEFS <compile definitions>
+#                                  DEPS <dependencies>
+#                                  ADDITIONAL_HEADERS <header files>)
+function(add_compiler_rt_object_libraries name)
+  cmake_parse_arguments(LIB "" "" "OS;ARCHS;SOURCES;CFLAGS;DEFS;DEPS;ADDITIONAL_HEADERS"
+    ${ARGN})
+  set(libnames)
+  if(APPLE)
+    foreach(os ${LIB_OS})
+      set(libname "${name}.${os}")
+      set(libnames ${libnames} ${libname})
+      set(extra_cflags_${libname} ${DARWIN_${os}_CFLAGS})
+      list_intersect(LIB_ARCHS_${libname} DARWIN_${os}_ARCHS LIB_ARCHS)
+    endforeach()
+  else()
+    foreach(arch ${LIB_ARCHS})
+      set(libname "${name}.${arch}")
+      set(libnames ${libnames} ${libname})
+      set(extra_cflags_${libname} ${TARGET_${arch}_CFLAGS})
+      if(NOT CAN_TARGET_${arch})
+        message(FATAL_ERROR "Architecture ${arch} can't be targeted")
+        return()
+      endif()
+    endforeach()
+  endif()
+
+  # Add headers to LIB_SOURCES for IDEs
+  compiler_rt_process_sources(LIB_SOURCES
+    ${LIB_SOURCES}
+    ADDITIONAL_HEADERS
+      ${LIB_ADDITIONAL_HEADERS}
+  )
+
+  foreach(libname ${libnames})
+    add_library(${libname} OBJECT ${LIB_SOURCES})
+    if(LIB_DEPS)
+      add_dependencies(${libname} ${LIB_DEPS})
+    endif()
+
+    # Strip out -msse3 if this isn't macOS.
+    set(target_flags ${LIB_CFLAGS})
+    if(APPLE AND NOT "${libname}" MATCHES ".*\.osx.*")
+      list(REMOVE_ITEM target_flags "-msse3")
+    endif()
+
+    set_target_compile_flags(${libname}
+      ${extra_cflags_${libname}} ${target_flags})
+    set_property(TARGET ${libname} APPEND PROPERTY
+      COMPILE_DEFINITIONS ${LIB_DEFS})
+    set_target_properties(${libname} PROPERTIES FOLDER "Compiler-RT Libraries")
+    if(APPLE)
+      set_target_properties(${libname} PROPERTIES
+        OSX_ARCHITECTURES "${LIB_ARCHS_${libname}}")
+    endif()
+  endforeach()
+endfunction()
+
+# Takes a list of object library targets, and a suffix and appends the proper
+# TARGET_OBJECTS string to the output variable.
+# format_object_libs(<output> <suffix> ...)
+macro(format_object_libs output suffix)
+  foreach(lib ${ARGN})
+    list(APPEND ${output} $<TARGET_OBJECTS:${lib}.${suffix}>)
+  endforeach()
+endmacro()
+
+function(add_compiler_rt_component name)
+  add_custom_target(${name})
+  set_target_properties(${name} PROPERTIES FOLDER "Compiler-RT Misc")
+  if(COMMAND runtime_register_component)
+    runtime_register_component(${name})
+  endif()
+  add_dependencies(compiler-rt ${name})
+endfunction()
+
+function(add_asm_sources output)
+  set(${output} ${ARGN} PARENT_SCOPE)
+  # Xcode will try to compile asm files as C ('clang -x c'), and that will fail.
+  if (${CMAKE_GENERATOR} STREQUAL "Xcode")
+    enable_language(ASM)
+  else()
+    # Pass ASM file directly to the C++ compiler.
+    set_source_files_properties(${ARGN} PROPERTIES LANGUAGE C)
+  endif()
+endfunction()
+
+macro(set_output_name output name arch)
+  if(LLVM_ENABLE_PER_TARGET_RUNTIME_DIR)
+    set(${output} ${name})
+  else()
+    if(ANDROID AND ${arch} STREQUAL "i386")
+      set(${output} "${name}-i686${COMPILER_RT_OS_SUFFIX}")
+    else()
+      set(${output} "${name}-${arch}${COMPILER_RT_OS_SUFFIX}")
+    endif()
+  endif()
+endmacro()
+
+# Adds static or shared runtime for a list of architectures and operating
+# systems and puts it in the proper directory in the build and install trees.
+# add_compiler_rt_runtime(<name>
+#                         {OBJECT|STATIC|SHARED}
+#                         ARCHS <architectures>
+#                         OS <os list>
+#                         SOURCES <source files>
+#                         CFLAGS <compile flags>
+#                         LINK_FLAGS <linker flags>
+#                         DEFS <compile definitions>
+#                         LINK_LIBS <linked libraries> (only for shared library)
+#                         OBJECT_LIBS <object libraries to use as sources>
+#                         PARENT_TARGET <convenience parent target>
+#                         ADDITIONAL_HEADERS <header files>)
+function(add_compiler_rt_runtime name type)
+  if(NOT type MATCHES "^(OBJECT|STATIC|SHARED)$")
+    message(FATAL_ERROR "type argument must be OBJECT, STATIC or SHARED")
+    return()
+  endif()
+  cmake_parse_arguments(LIB
+    ""
+    "PARENT_TARGET"
+    "OS;ARCHS;SOURCES;CFLAGS;LINK_FLAGS;DEFS;LINK_LIBS;OBJECT_LIBS;ADDITIONAL_HEADERS"
+    ${ARGN})
+  set(libnames)
+  # Until we support this some other way, build compiler-rt runtime without LTO
+  # to allow non-LTO projects to link with it.
+  if(COMPILER_RT_HAS_FNO_LTO_FLAG)
+    set(NO_LTO_FLAGS "-fno-lto")
+  else()
+    set(NO_LTO_FLAGS "")
+  endif()
+
+  list(LENGTH LIB_SOURCES LIB_SOURCES_LENGTH)
+  if (${LIB_SOURCES_LENGTH} GREATER 0)
+    # Add headers to LIB_SOURCES for IDEs. It doesn't make sense to
+    # do this for a runtime library that only consists of OBJECT
+    # libraries, so only add the headers when source files are present.
+    compiler_rt_process_sources(LIB_SOURCES
+      ${LIB_SOURCES}
+      ADDITIONAL_HEADERS
+        ${LIB_ADDITIONAL_HEADERS}
+    )
+  endif()
+
+  if(APPLE)
+    foreach(os ${LIB_OS})
+      # Strip out -msse3 if this isn't macOS.
+      list(LENGTH LIB_CFLAGS HAS_EXTRA_CFLAGS)
+      if(HAS_EXTRA_CFLAGS AND NOT "${os}" MATCHES "^(osx)$")
+        list(REMOVE_ITEM LIB_CFLAGS "-msse3")
+      endif()
+      if(type STREQUAL "STATIC")
+        set(libname "${name}_${os}")
+      else()
+        set(libname "${name}_${os}_dynamic")
+        set(extra_link_flags_${libname} ${DARWIN_${os}_LINK_FLAGS} ${LIB_LINK_FLAGS})
+      endif()
+      list_intersect(LIB_ARCHS_${libname} DARWIN_${os}_ARCHS LIB_ARCHS)
+      if(LIB_ARCHS_${libname})
+        list(APPEND libnames ${libname})
+        set(extra_cflags_${libname} ${DARWIN_${os}_CFLAGS} ${NO_LTO_FLAGS} ${LIB_CFLAGS})
+        set(output_name_${libname} ${libname}${COMPILER_RT_OS_SUFFIX})
+        set(sources_${libname} ${LIB_SOURCES})
+        format_object_libs(sources_${libname} ${os} ${LIB_OBJECT_LIBS})
+        get_compiler_rt_output_dir(${COMPILER_RT_DEFAULT_TARGET_ARCH} output_dir_${libname})
+        get_compiler_rt_install_dir(${COMPILER_RT_DEFAULT_TARGET_ARCH} install_dir_${libname})
+      endif()
+    endforeach()
+  else()
+    foreach(arch ${LIB_ARCHS})
+      if(NOT CAN_TARGET_${arch})
+        message(FATAL_ERROR "Architecture ${arch} can't be targeted")
+        return()
+      endif()
+      if(type STREQUAL "OBJECT")
+        set(libname "${name}-${arch}")
+        set_output_name(output_name_${libname} ${name}${COMPILER_RT_OS_SUFFIX} ${arch})
+      elseif(type STREQUAL "STATIC")
+        set(libname "${name}-${arch}")
+        set_output_name(output_name_${libname} ${name} ${arch})
+      else()
+        set(libname "${name}-dynamic-${arch}")
+        set(extra_cflags_${libname} ${TARGET_${arch}_CFLAGS} ${LIB_CFLAGS})
+        set(extra_link_flags_${libname} ${TARGET_${arch}_LINK_FLAGS} ${LIB_LINK_FLAGS})
+        if(WIN32)
+          set_output_name(output_name_${libname} ${name}_dynamic ${arch})
+        else()
+          set_output_name(output_name_${libname} ${name} ${arch})
+        endif()
+      endif()
+      set(sources_${libname} ${LIB_SOURCES})
+      format_object_libs(sources_${libname} ${arch} ${LIB_OBJECT_LIBS})
+      set(libnames ${libnames} ${libname})
+      set(extra_cflags_${libname} ${TARGET_${arch}_CFLAGS} ${NO_LTO_FLAGS} ${LIB_CFLAGS})
+      get_compiler_rt_output_dir(${arch} output_dir_${libname})
+      get_compiler_rt_install_dir(${arch} install_dir_${libname})
+    endforeach()
+  endif()
+
+  if(NOT libnames)
+    return()
+  endif()
+
+  if(LIB_PARENT_TARGET)
+    # If the parent targets aren't created we should create them
+    if(NOT TARGET ${LIB_PARENT_TARGET})
+      add_custom_target(${LIB_PARENT_TARGET})
+      set_target_properties(${LIB_PARENT_TARGET} PROPERTIES
+                            FOLDER "Compiler-RT Misc")
+    endif()
+  endif()
+
+  foreach(libname ${libnames})
+    # If you are using a multi-configuration generator we don't generate
+    # per-library install rules, so we fall back to the parent target COMPONENT
+    if(CMAKE_CONFIGURATION_TYPES AND LIB_PARENT_TARGET)
+      set(COMPONENT_OPTION COMPONENT ${LIB_PARENT_TARGET})
+    else()
+      set(COMPONENT_OPTION COMPONENT ${libname})
+    endif()
+
+    if(type STREQUAL "OBJECT")
+      if(CMAKE_C_COMPILER_ID MATCHES Clang AND CMAKE_C_COMPILER_TARGET)
+        list(APPEND extra_cflags_${libname} "--target=${CMAKE_C_COMPILER_TARGET}")
+      endif()
+      if(CMAKE_SYSROOT)
+        list(APPEND extra_cflags_${libname} "--sysroot=${CMAKE_SYSROOT}")
+      endif()
+      string(REPLACE ";" " " extra_cflags_${libname} "${extra_cflags_${libname}}")
+      string(REGEX MATCHALL "<[A-Za-z0-9_]*>" substitutions
+             ${CMAKE_C_COMPILE_OBJECT})
+      set(compile_command_${libname} "${CMAKE_C_COMPILE_OBJECT}")
+
+      set(output_file_${libname} ${output_name_${libname}}${CMAKE_C_OUTPUT_EXTENSION})
+      foreach(substitution ${substitutions})
+        if(substitution STREQUAL "<CMAKE_C_COMPILER>")
+          string(REPLACE "<CMAKE_C_COMPILER>" "${CMAKE_C_COMPILER} ${CMAKE_C_COMPILER_ARG1}"
+                 compile_command_${libname} ${compile_command_${libname}})
+        elseif(substitution STREQUAL "<OBJECT>")
+          string(REPLACE "<OBJECT>" "${output_dir_${libname}}/${output_file_${libname}}"
+                 compile_command_${libname} ${compile_command_${libname}})
+        elseif(substitution STREQUAL "<SOURCE>")
+          string(REPLACE "<SOURCE>" "${sources_${libname}}"
+                 compile_command_${libname} ${compile_command_${libname}})
+        elseif(substitution STREQUAL "<FLAGS>")
+          string(REPLACE "<FLAGS>" "${CMAKE_C_FLAGS} ${extra_cflags_${libname}}"
+                 compile_command_${libname} ${compile_command_${libname}})
+        else()
+          string(REPLACE "${substitution}" "" compile_command_${libname}
+                 ${compile_command_${libname}})
+        endif()
+      endforeach()
+      separate_arguments(compile_command_${libname})
+      add_custom_command(
+          OUTPUT ${output_dir_${libname}}/${output_file_${libname}}
+          COMMAND ${compile_command_${libname}}
+          DEPENDS ${sources_${libname}}
+          COMMENT "Building C object ${output_file_${libname}}")
+      add_custom_target(${libname} DEPENDS ${output_dir_${libname}}/${output_file_${libname}})
+      install(FILES ${output_dir_${libname}}/${output_file_${libname}}
+        DESTINATION ${install_dir_${libname}}
+        ${COMPONENT_OPTION})
+    else()
+      add_library(${libname} ${type} ${sources_${libname}})
+      set_target_compile_flags(${libname} ${extra_cflags_${libname}})
+      set_target_link_flags(${libname} ${extra_link_flags_${libname}})
+      set_property(TARGET ${libname} APPEND PROPERTY
+                   COMPILE_DEFINITIONS ${LIB_DEFS})
+      set_target_output_directories(${libname} ${output_dir_${libname}})
+      install(TARGETS ${libname}
+        ARCHIVE DESTINATION ${install_dir_${libname}}
+                ${COMPONENT_OPTION}
+        LIBRARY DESTINATION ${install_dir_${libname}}
+                ${COMPONENT_OPTION}
+        RUNTIME DESTINATION ${install_dir_${libname}}
+                ${COMPONENT_OPTION})
+    endif()
+    set_target_properties(${libname} PROPERTIES
+        OUTPUT_NAME ${output_name_${libname}})
+    set_target_properties(${libname} PROPERTIES FOLDER "Compiler-RT Runtime")
+    if(LIB_LINK_LIBS)
+      target_link_libraries(${libname} PRIVATE ${LIB_LINK_LIBS})
+    endif()
+    if(${type} STREQUAL "SHARED")
+      if(COMMAND llvm_setup_rpath)
+        llvm_setup_rpath(${libname})
+      endif()
+      if(WIN32 AND NOT CYGWIN AND NOT MINGW)
+        set_target_properties(${libname} PROPERTIES IMPORT_PREFIX "")
+        set_target_properties(${libname} PROPERTIES IMPORT_SUFFIX ".lib")
+      endif()
+      if(APPLE)
+        # Ad-hoc sign the dylibs
+        add_custom_command(TARGET ${libname}
+          POST_BUILD  
+          COMMAND codesign --sign - $<TARGET_FILE:${libname}>
+          WORKING_DIRECTORY ${COMPILER_RT_LIBRARY_OUTPUT_DIR}
+        )
+      endif()
+    endif()
+
+    set(parent_target_arg)
+    if(LIB_PARENT_TARGET)
+      set(parent_target_arg PARENT_TARGET ${LIB_PARENT_TARGET})
+    endif()
+    add_compiler_rt_install_targets(${libname} ${parent_target_arg})
+
+    if(APPLE)
+      set_target_properties(${libname} PROPERTIES
+      OSX_ARCHITECTURES "${LIB_ARCHS_${libname}}")
+    endif()
+
+    if(type STREQUAL "SHARED")
+      rt_externalize_debuginfo(${libname})
+    endif()
+  endforeach()
+  if(LIB_PARENT_TARGET)
+    add_dependencies(${LIB_PARENT_TARGET} ${libnames})
+  endif()
+endfunction()
+
+# when cross compiling, COMPILER_RT_TEST_COMPILER_CFLAGS help
+# in compilation and linking of unittests.
+string(REPLACE " " ";" COMPILER_RT_UNITTEST_CFLAGS "${COMPILER_RT_TEST_COMPILER_CFLAGS}")
+set(COMPILER_RT_UNITTEST_LINK_FLAGS ${COMPILER_RT_UNITTEST_CFLAGS})
+
+# Unittests support.
+set(COMPILER_RT_GTEST_PATH ${LLVM_MAIN_SRC_DIR}/utils/unittest/googletest)
+set(COMPILER_RT_GTEST_SOURCE ${COMPILER_RT_GTEST_PATH}/src/gtest-all.cc)
+set(COMPILER_RT_GTEST_CFLAGS
+  -DGTEST_NO_LLVM_SUPPORT=1
+  -DGTEST_HAS_RTTI=0
+  -I${COMPILER_RT_GTEST_PATH}/include
+  -I${COMPILER_RT_GTEST_PATH}
+)
+
+# Mocking support.
+set(COMPILER_RT_GMOCK_PATH ${LLVM_MAIN_SRC_DIR}/utils/unittest/googlemock)
+set(COMPILER_RT_GMOCK_SOURCE ${COMPILER_RT_GMOCK_PATH}/src/gmock-all.cc)
+set(COMPILER_RT_GMOCK_CFLAGS
+  -DGTEST_NO_LLVM_SUPPORT=1
+  -DGTEST_HAS_RTTI=0
+  -I${COMPILER_RT_GMOCK_PATH}/include
+  -I${COMPILER_RT_GMOCK_PATH}
+)
+
+append_list_if(COMPILER_RT_DEBUG -DSANITIZER_DEBUG=1 COMPILER_RT_UNITTEST_CFLAGS)
+append_list_if(COMPILER_RT_HAS_WCOVERED_SWITCH_DEFAULT_FLAG -Wno-covered-switch-default COMPILER_RT_UNITTEST_CFLAGS)
+
+if(MSVC)
+  # gtest use a lot of stuff marked as deprecated on Windows.
+  list(APPEND COMPILER_RT_GTEST_CFLAGS -Wno-deprecated-declarations)
+endif()
+
+# Compile and register compiler-rt tests.
+# generate_compiler_rt_tests(<output object files> <test_suite> <test_name>
+#                           <test architecture>
+#                           KIND <custom prefix>
+#                           SUBDIR <subdirectory for testing binary>
+#                           SOURCES <sources to compile>
+#                           RUNTIME <tests runtime to link in>
+#                           CFLAGS <compile-time flags>
+#                           COMPILE_DEPS <compile-time dependencies>
+#                           DEPS <dependencies>
+#                           LINK_FLAGS <flags to use during linking>
+# )
+function(generate_compiler_rt_tests test_objects test_suite testname arch)
+  cmake_parse_arguments(TEST "" "KIND;RUNTIME;SUBDIR"
+    "SOURCES;COMPILE_DEPS;DEPS;CFLAGS;LINK_FLAGS" ${ARGN})
+
+  foreach(source ${TEST_SOURCES})
+    sanitizer_test_compile(
+      "${test_objects}" "${source}" "${arch}"
+      KIND ${TEST_KIND}
+      COMPILE_DEPS ${TEST_COMPILE_DEPS}
+      DEPS ${TEST_DEPS}
+      CFLAGS ${TEST_CFLAGS}
+      )
+  endforeach()
+
+  set(TEST_DEPS ${${test_objects}})
+
+  if(NOT "${TEST_RUNTIME}" STREQUAL "")
+    list(APPEND TEST_DEPS ${TEST_RUNTIME})
+    list(APPEND "${test_objects}" $<TARGET_FILE:${TEST_RUNTIME}>)
+  endif()
+
+  add_compiler_rt_test(${test_suite} "${testname}" "${arch}"
+    SUBDIR ${TEST_SUBDIR}
+    OBJECTS ${${test_objects}}
+    DEPS ${TEST_DEPS}
+    LINK_FLAGS ${TEST_LINK_FLAGS}
+    )
+  set("${test_objects}" "${${test_objects}}" PARENT_SCOPE)
+endfunction()
+
+# Link objects into a single executable with COMPILER_RT_TEST_COMPILER,
+# using specified link flags. Make executable a part of provided
+# test_suite.
+# add_compiler_rt_test(<test_suite> <test_name> <arch>
+#                      SUBDIR <subdirectory for binary>
+#                      OBJECTS <object files>
+#                      DEPS <deps (e.g. runtime libs)>
+#                      LINK_FLAGS <link flags>)
+function(add_compiler_rt_test test_suite test_name arch)
+  cmake_parse_arguments(TEST "" "SUBDIR" "OBJECTS;DEPS;LINK_FLAGS" "" ${ARGN})
+  set(output_dir ${CMAKE_CURRENT_BINARY_DIR})
+  if(TEST_SUBDIR)
+    set(output_dir "${output_dir}/${TEST_SUBDIR}")
+  endif()
+  set(output_dir "${output_dir}/${CMAKE_CFG_INTDIR}")
+  file(MAKE_DIRECTORY "${output_dir}")
+  set(output_bin "${output_dir}/${test_name}")
+  if(MSVC)
+    set(output_bin "${output_bin}.exe")
+  endif()
+
+  # Use host compiler in a standalone build, and just-built Clang otherwise.
+  if(NOT COMPILER_RT_STANDALONE_BUILD)
+    list(APPEND TEST_DEPS clang)
+  endif()
+
+  get_target_flags_for_arch(${arch} TARGET_LINK_FLAGS)
+  list(APPEND TEST_LINK_FLAGS ${TARGET_LINK_FLAGS})
+
+  # If we're not on MSVC, include the linker flags from CMAKE but override them
+  # with the provided link flags. This ensures that flags which are required to
+  # link programs at all are included, but the changes needed for the test
+  # trump. With MSVC we can't do that because CMake is set up to run link.exe
+  # when linking, not the compiler. Here, we hack it to use the compiler
+  # because we want to use -fsanitize flags.
+  if(NOT MSVC)
+    set(TEST_LINK_FLAGS "${CMAKE_EXE_LINKER_FLAGS} ${TEST_LINK_FLAGS}")
+    separate_arguments(TEST_LINK_FLAGS)
+  endif()
+  if(NOT COMPILER_RT_STANDALONE_BUILD AND COMPILER_RT_HAS_LLD AND "lld" IN_LIST LLVM_ENABLE_PROJECTS)
+    # CMAKE_EXE_LINKER_FLAGS may contain -fuse=lld
+    # FIXME: -DLLVM_ENABLE_LLD=ON and -DLLVM_ENABLE_PROJECTS without lld case.
+    list(APPEND TEST_DEPS lld)
+  endif()
+  add_custom_command(
+    OUTPUT "${output_bin}"
+    COMMAND ${COMPILER_RT_TEST_COMPILER} ${TEST_OBJECTS} -o "${output_bin}"
+            ${TEST_LINK_FLAGS}
+    DEPENDS ${TEST_DEPS}
+    )
+  add_custom_target(T${test_name} DEPENDS "${output_bin}")
+  set_target_properties(T${test_name} PROPERTIES FOLDER "Compiler-RT Tests")
+
+  # Make the test suite depend on the binary.
+  add_dependencies(${test_suite} T${test_name})
+endfunction()
+
+macro(add_compiler_rt_resource_file target_name file_name component)
+  set(src_file "${CMAKE_CURRENT_SOURCE_DIR}/${file_name}")
+  set(dst_file "${COMPILER_RT_OUTPUT_DIR}/share/${file_name}")
+  add_custom_command(OUTPUT ${dst_file}
+    DEPENDS ${src_file}
+    COMMAND ${CMAKE_COMMAND} -E copy_if_different ${src_file} ${dst_file}
+    COMMENT "Copying ${file_name}...")
+  add_custom_target(${target_name} DEPENDS ${dst_file})
+  # Install in Clang resource directory.
+  install(FILES ${file_name}
+    DESTINATION ${COMPILER_RT_INSTALL_PATH}/share
+    COMPONENT ${component})
+  add_dependencies(${component} ${target_name})
+
+  set_target_properties(${target_name} PROPERTIES FOLDER "Compiler-RT Misc")
+endmacro()
+
+macro(add_compiler_rt_script name)
+  set(dst ${COMPILER_RT_EXEC_OUTPUT_DIR}/${name})
+  set(src ${CMAKE_CURRENT_SOURCE_DIR}/${name})
+  add_custom_command(OUTPUT ${dst}
+    DEPENDS ${src}
+    COMMAND ${CMAKE_COMMAND} -E copy_if_different ${src} ${dst}
+    COMMENT "Copying ${name}...")
+  add_custom_target(${name} DEPENDS ${dst})
+  install(FILES ${dst}
+    PERMISSIONS OWNER_READ OWNER_WRITE OWNER_EXECUTE GROUP_READ GROUP_EXECUTE WORLD_READ WORLD_EXECUTE
+    DESTINATION ${COMPILER_RT_INSTALL_PATH}/bin)
+endmacro(add_compiler_rt_script src name)
+
+# Builds custom version of libc++ and installs it in <prefix>.
+# Can be used to build sanitized versions of libc++ for running unit tests.
+# add_custom_libcxx(<name> <prefix>
+#                   DEPS <list of build deps>
+#                   CFLAGS <list of compile flags>
+#                   USE_TOOLCHAIN)
+macro(add_custom_libcxx name prefix)
+  if(NOT COMPILER_RT_LIBCXX_PATH)
+    message(FATAL_ERROR "libcxx not found!")
+  endif()
+  if(NOT COMPILER_RT_LIBCXXABI_PATH)
+    message(FATAL_ERROR "libcxxabi not found!")
+  endif()
+
+  cmake_parse_arguments(LIBCXX "USE_TOOLCHAIN" "" "DEPS;CFLAGS;CMAKE_ARGS" ${ARGN})
+
+  if(LIBCXX_USE_TOOLCHAIN)
+    set(compiler_args -DCMAKE_C_COMPILER=${COMPILER_RT_TEST_COMPILER}
+                      -DCMAKE_CXX_COMPILER=${COMPILER_RT_TEST_CXX_COMPILER})
+    if(NOT COMPILER_RT_STANDALONE_BUILD AND NOT RUNTIMES_BUILD)
+      set(toolchain_deps $<TARGET_FILE:clang>)
+      set(force_deps DEPENDS $<TARGET_FILE:clang>)
+    endif()
+  else()
+    set(compiler_args -DCMAKE_C_COMPILER=${CMAKE_C_COMPILER}
+                      -DCMAKE_CXX_COMPILER=${CMAKE_CXX_COMPILER})
+  endif()
+
+  set(STAMP_DIR ${prefix}-stamps/)
+  set(BINARY_DIR ${prefix}-bins/)
+
+  add_custom_target(${name}-clear
+    COMMAND ${CMAKE_COMMAND} -E remove_directory ${BINARY_DIR}
+    COMMAND ${CMAKE_COMMAND} -E remove_directory ${STAMP_DIR}
+    COMMENT "Clobbering ${name} build and stamp directories"
+    USES_TERMINAL
+    )
+  set_target_properties(${name}-clear PROPERTIES FOLDER "Compiler-RT Misc")
+
+  add_custom_command(
+    OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/${name}-clobber-stamp
+    DEPENDS ${LIBCXX_DEPS} ${toolchain_deps}
+    COMMAND ${CMAKE_COMMAND} -E touch ${BINARY_DIR}/CMakeCache.txt
+    COMMAND ${CMAKE_COMMAND} -E touch ${STAMP_DIR}/${name}-mkdir
+    COMMAND ${CMAKE_COMMAND} -E touch ${CMAKE_CURRENT_BINARY_DIR}/${name}-clobber-stamp
+    COMMENT "Clobbering bootstrap build and stamp directories"
+    )
+
+  add_custom_target(${name}-clobber
+    DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/${name}-clobber-stamp)
+  set_target_properties(${name}-clobber PROPERTIES FOLDER "Compiler-RT Misc")
+
+  set(PASSTHROUGH_VARIABLES
+    CMAKE_C_COMPILER_TARGET
+    CMAKE_CXX_COMPILER_TARGET
+    CMAKE_SHARED_LINKER_FLAGS
+    CMAKE_MODULE_LINKER_FLAGS
+    CMAKE_EXE_LINKER_FLAGS
+    CMAKE_INSTALL_PREFIX
+    CMAKE_MAKE_PROGRAM
+    CMAKE_LINKER
+    CMAKE_AR
+    CMAKE_RANLIB
+    CMAKE_NM
+    CMAKE_OBJCOPY
+    CMAKE_OBJDUMP
+    CMAKE_STRIP
+    CMAKE_SYSROOT
+    CMAKE_SYSTEM_NAME)
+  foreach(variable ${PASSTHROUGH_VARIABLES})
+    get_property(is_value_set CACHE ${variable} PROPERTY VALUE SET)
+    if(${is_value_set})
+      get_property(value CACHE ${variable} PROPERTY VALUE)
+      list(APPEND CMAKE_PASSTHROUGH_VARIABLES -D${variable}=${value})
+    endif()
+  endforeach()
+
+  string(REPLACE ";" " " LIBCXX_C_FLAGS "${LIBCXX_CFLAGS}")
+  get_property(C_FLAGS CACHE CMAKE_C_FLAGS PROPERTY VALUE)
+  set(LIBCXX_C_FLAGS "${LIBCXX_C_FLAGS} ${C_FLAGS}")
+
+  string(REPLACE ";" " " LIBCXX_CXX_FLAGS "${LIBCXX_CFLAGS}")
+  get_property(CXX_FLAGS CACHE CMAKE_CXX_FLAGS PROPERTY VALUE)
+  set(LIBCXX_CXX_FLAGS "${LIBCXX_CXX_FLAGS} ${CXX_FLAGS}")
+
+  ExternalProject_Add(${name}
+    DEPENDS ${name}-clobber ${LIBCXX_DEPS}
+    PREFIX ${prefix}
+    SOURCE_DIR ${COMPILER_RT_SOURCE_DIR}/cmake/Modules/CustomLibcxx
+    STAMP_DIR ${STAMP_DIR}
+    BINARY_DIR ${BINARY_DIR}
+    CMAKE_ARGS ${CMAKE_PASSTHROUGH_VARIABLES}
+               ${compiler_args}
+               -DCMAKE_C_FLAGS=${LIBCXX_C_FLAGS}
+               -DCMAKE_CXX_FLAGS=${LIBCXX_CXX_FLAGS}
+               -DCMAKE_BUILD_TYPE=Release
+               -DCMAKE_TRY_COMPILE_TARGET_TYPE=STATIC_LIBRARY
+               -DLLVM_PATH=${LLVM_MAIN_SRC_DIR}
+               -DLLVM_BINARY_DIR=${prefix}
+               -DLLVM_LIBRARY_OUTPUT_INTDIR=${prefix}/lib
+               -DCOMPILER_RT_LIBCXX_PATH=${COMPILER_RT_LIBCXX_PATH}
+               -DCOMPILER_RT_LIBCXXABI_PATH=${COMPILER_RT_LIBCXXABI_PATH}
+               ${LIBCXX_CMAKE_ARGS}
+    INSTALL_COMMAND ""
+    STEP_TARGETS configure build
+    BUILD_ALWAYS 1
+    USES_TERMINAL_CONFIGURE 1
+    USES_TERMINAL_BUILD 1
+    USES_TERMINAL_INSTALL 1
+    EXCLUDE_FROM_ALL TRUE
+    BUILD_BYPRODUCTS "${prefix}/lib/libc++.a" "${prefix}/lib/libc++abi.a"
+    )
+
+  if (CMAKE_GENERATOR MATCHES "Make")
+    set(run_clean "$(MAKE)" "-C" "${BINARY_DIR}" "clean")
+  else()
+    set(run_clean ${CMAKE_COMMAND} --build ${BINARY_DIR} --target clean
+                                   --config "$<CONFIG>")
+  endif()
+
+  ExternalProject_Add_Step(${name} clean
+    COMMAND ${run_clean}
+    COMMENT "Cleaning ${name}..."
+    DEPENDEES configure
+    ${force_deps}
+    WORKING_DIRECTORY ${BINARY_DIR}
+    EXCLUDE_FROM_MAIN 1
+    USES_TERMINAL 1
+    )
+  ExternalProject_Add_StepTargets(${name} clean)
+
+  if(LIBCXX_USE_TOOLCHAIN)
+    add_dependencies(${name}-clean ${name}-clobber)
+    set_target_properties(${name}-clean PROPERTIES
+      SOURCES ${CMAKE_CURRENT_BINARY_DIR}/${name}-clobber-stamp)
+  endif()
+endmacro()
+
+function(rt_externalize_debuginfo name)
+  if(NOT COMPILER_RT_EXTERNALIZE_DEBUGINFO)
+    return()
+  endif()
+
+  if(NOT COMPILER_RT_EXTERNALIZE_DEBUGINFO_SKIP_STRIP)
+    set(strip_command COMMAND xcrun strip -Sl $<TARGET_FILE:${name}>)
+  endif()
+
+  if(APPLE)
+    if(CMAKE_CXX_FLAGS MATCHES "-flto"
+      OR CMAKE_CXX_FLAGS_${uppercase_CMAKE_BUILD_TYPE} MATCHES "-flto")
+
+      set(lto_object ${CMAKE_CURRENT_BINARY_DIR}/${CMAKE_CFG_INTDIR}/${name}-lto.o)
+      set_property(TARGET ${name} APPEND_STRING PROPERTY
+        LINK_FLAGS " -Wl,-object_path_lto -Wl,${lto_object}")
+    endif()
+    add_custom_command(TARGET ${name} POST_BUILD
+      COMMAND xcrun dsymutil $<TARGET_FILE:${name}>
+      ${strip_command})
+  else()
+    message(FATAL_ERROR "COMPILER_RT_EXTERNALIZE_DEBUGINFO isn't implemented for non-darwin platforms!")
+  endif()
+endfunction()
+
+
+# Configure lit configuration files, including compiler-rt specific variables.
+function(configure_compiler_rt_lit_site_cfg input output)
+  set_llvm_build_mode()
+
+  get_compiler_rt_output_dir(${COMPILER_RT_DEFAULT_TARGET_ARCH} output_dir)
+
+  string(REPLACE ${CMAKE_CFG_INTDIR} ${LLVM_BUILD_MODE} COMPILER_RT_RESOLVED_TEST_COMPILER ${COMPILER_RT_TEST_COMPILER})
+  string(REPLACE ${CMAKE_CFG_INTDIR} ${LLVM_BUILD_MODE} COMPILER_RT_RESOLVED_LIBRARY_OUTPUT_DIR ${output_dir})
+
+  configure_lit_site_cfg(${input} ${output})
+endfunction()