CFI: Add a check-cfi-and-supported rule.

This rule works like check-cfi, but fails if the tests are unsupported.
This is useful to run on bots if we want to be sure that the tests aren't
silently being skipped.

llvm-svn: 230536

compiler-rt/test/cfi/CMakeLists.txt

@@ -20,4 +20,10 @@ endif()
 add_lit_testsuite(check-cfi "Running the cfi regression tests"
   ${CMAKE_CURRENT_BINARY_DIR}
   DEPENDS ${CFI_TEST_DEPS})
+
+add_lit_target(check-cfi-and-supported "Running the cfi regression tests"
+  ${CMAKE_CURRENT_BINARY_DIR}
+  PARAMS check_supported=1
+  DEPENDS ${CFI_TEST_DEPS})
+
 set_target_properties(check-cfi PROPERTIES FOLDER "Tests")

compiler-rt/test/cfi/lit.cfg

@@ -33,3 +33,6 @@ elif sys.platform.startswith('linux') and is_linux_lto_supported():
   config.substitutions.append((r"%clangxx_cfi ", clangxx + ' -fuse-ld=gold -fsanitize=cfi '))
 else:
   config.unsupported = True
+
+if lit_config.params.get('check_supported', None) and config.unsupported:
+  raise BaseException("Tests unsupported")