Run DCE after a LoopFlatten test to reduce spurious output [nfc]
[llvm-project.git] / compiler-rt / test / tsan / lit.cfg.py
bloba93333e2e593db578305abbad5b429859e83573f
1 # -*- Python -*-
3 import os
6 def get_required_attr(config, attr_name):
7 attr_value = getattr(config, attr_name, None)
8 if not attr_value:
9 lit_config.fatal(
10 "No attribute %r in test configuration! You may need to run "
11 "tests from your build directory or add this attribute "
12 "to lit.site.cfg.py " % attr_name
14 return attr_value
17 # Setup config name.
18 config.name = "ThreadSanitizer" + config.name_suffix
20 # Setup source root.
21 config.test_source_root = os.path.dirname(__file__)
23 # Setup environment variables for running ThreadSanitizer.
24 default_tsan_opts = "atexit_sleep_ms=0"
26 if config.host_os == "Darwin":
27 # On Darwin, we default to `abort_on_error=1`, which would make tests run
28 # much slower. Let's override this and run lit tests with 'abort_on_error=0'.
29 default_tsan_opts += ":abort_on_error=0"
30 # On Darwin, we default to ignore_noninstrumented_modules=1, which also
31 # suppresses some races the tests are supposed to find. Let's run without this
32 # setting, but turn it back on for Darwin tests (see Darwin/lit.local.cfg.py).
33 default_tsan_opts += ":ignore_noninstrumented_modules=0"
34 default_tsan_opts += ":ignore_interceptors_accesses=0"
36 # Platform-specific default TSAN_OPTIONS for lit tests.
37 if default_tsan_opts:
38 config.environment["TSAN_OPTIONS"] = default_tsan_opts
39 default_tsan_opts += ":"
40 config.substitutions.append(
41 ("%env_tsan_opts=", "env TSAN_OPTIONS=" + default_tsan_opts)
44 # GCC driver doesn't add necessary compile/link flags with -fsanitize=thread.
45 if config.compiler_id == "GNU":
46 extra_cflags = ["-fPIE", "-pthread", "-ldl", "-lrt", "-pie"]
47 else:
48 extra_cflags = []
50 tsan_incdir = config.test_source_root + "/../"
51 # Setup default compiler flags used with -fsanitize=thread option.
52 clang_tsan_cflags = (
53 ["-fsanitize=thread", "-Wall"]
54 + [config.target_cflags]
55 + config.debug_info_flags
56 + extra_cflags
57 + ["-I%s" % tsan_incdir]
59 clang_tsan_cxxflags = (
60 config.cxx_mode_flags + clang_tsan_cflags + ["-std=c++11"] + ["-I%s" % tsan_incdir]
62 # Add additional flags if we're using instrumented libc++.
63 # Instrumented libcxx currently not supported on Darwin.
64 if config.has_libcxx and config.host_os != "Darwin":
65 # FIXME: Dehardcode this path somehow.
66 libcxx_path = os.path.join(
67 config.compiler_rt_obj_root,
68 "lib",
69 "tsan",
70 "libcxx_tsan_%s" % config.target_arch,
72 libcxx_incdir = os.path.join(libcxx_path, "include", "c++", "v1")
73 libcxx_libdir = os.path.join(libcxx_path, "lib")
74 libcxx_a = os.path.join(libcxx_libdir, "libc++.a")
75 clang_tsan_cxxflags += ["-nostdinc++", "-I%s" % libcxx_incdir]
76 config.substitutions.append(("%link_libcxx_tsan", libcxx_a))
77 else:
78 config.substitutions.append(("%link_libcxx_tsan", ""))
81 def build_invocation(compile_flags):
82 return " " + " ".join([config.clang] + compile_flags) + " "
85 config.substitutions.append(("%clang_tsan ", build_invocation(clang_tsan_cflags)))
86 config.substitutions.append(("%clangxx_tsan ", build_invocation(clang_tsan_cxxflags)))
88 # Define CHECK-%os to check for OS-dependent output.
89 config.substitutions.append(("CHECK-%os", ("CHECK-" + config.host_os)))
91 config.substitutions.append(
93 "%deflake ",
94 os.path.join(os.path.dirname(__file__), "deflake.bash")
95 + " "
96 + config.deflake_threshold
97 + " ",
101 # Default test suffixes.
102 config.suffixes = [".c", ".cpp", ".m", ".mm"]
104 if config.host_os not in ["FreeBSD", "Linux", "Darwin", "NetBSD"]:
105 config.unsupported = True
107 if config.android:
108 config.unsupported = True
110 if not config.parallelism_group:
111 config.parallelism_group = "shadow-memory"
113 if config.host_os == "NetBSD":
114 config.substitutions.insert(0, ("%run", config.netbsd_noaslr_prefix))