1 files changed, 69 insertions, 0 deletions
diff --git a/lib/dfsan/lit_tests/lit.cfg b/lib/dfsan/lit_tests/lit.cfg
new file mode 100644
index 000000000000..19bc97690a86
--- /dev/null
+++ b/lib/dfsan/lit_tests/lit.cfg
@@ -0,0 +1,69 @@
+# -*- Python -*-
+
+import os
+
+import lit.util
+
+def get_required_attr(config, attr_name):
+  attr_value = getattr(config, attr_name, None)
+  if not attr_value:
+    lit_config.fatal(
+      "No attribute %r in test configuration! You may need to run "
+      "tests from your build directory or add this attribute "
+      "to lit.site.cfg " % attr_name)
+  return attr_value
+
+# Setup config name.
+config.name = 'DataFlowSanitizer'
+
+# Setup source root.
+config.test_source_root = os.path.dirname(__file__)
+
+def DisplayNoConfigMessage():
+  lit_config.fatal("No site specific configuration available! " +
+                   "Try running your test from the build tree or running " +
+                   "make check-dfsan")
+
+# Figure out LLVM source root.
+llvm_src_root = getattr(config, 'llvm_src_root', None)
+if llvm_src_root is None:
+  # We probably haven't loaded the site-specific configuration: the user
+  # is likely trying to run a test file directly, and the site configuration
+  # wasn't created by the build system.
+  dfsan_site_cfg = lit_config.params.get('dfsan_site_config', None)
+  if (dfsan_site_cfg) and (os.path.exists(dfsan_site_cfg)):
+    lit_config.load_config(config, dfsan_site_cfg)
+    raise SystemExit
+
+  # Try to guess the location of site-specific configuration using llvm-config
+  # util that can point where the build tree is.
+  llvm_config = lit.util.which("llvm-config", config.environment["PATH"])
+  if not llvm_config:
+    DisplayNoConfigMessage()
+
+  # Find out the presumed location of generated site config.
+  llvm_obj_root = lit.util.capture(["llvm-config", "--obj-root"]).strip()
+  dfsan_site_cfg = os.path.join(llvm_obj_root, "projects", "compiler-rt",
+                               "lib", "dfsan", "lit_tests", "lit.site.cfg")
+  if (not dfsan_site_cfg) or (not os.path.exists(dfsan_site_cfg)):
+    DisplayNoConfigMessage()
+
+  lit_config.load_config(config, dfsan_site_cfg)
+  raise SystemExit
+
+# Setup default compiler flags used with -fsanitize=dataflow option.
+clang_dfsan_cflags = ["-fsanitize=dataflow"]
+clang_dfsan_cxxflags = ["--driver-mode=g++ "] + clang_dfsan_cflags
+config.substitutions.append( ("%clang_dfsan ",
+                              " ".join([config.clang] + clang_dfsan_cflags) + 
+                              " ") )
+config.substitutions.append( ("%clangxx_dfsan ",
+                              " ".join([config.clang] + clang_dfsan_cxxflags) + 
+                              " ") )
+
+# Default test suffixes.
+config.suffixes = ['.c', '.cc', '.cpp']
+
+# DataFlowSanitizer tests are currently supported on Linux only.
+if config.host_os not in ['Linux']:
+  config.unsupported = True