forked from OSchip/llvm-project
196 lines
7.4 KiB
Python
196 lines
7.4 KiB
Python
# -*- Python -*-
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# Configuration file for 'lit' test runner.
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# This file contains common rules for various compiler-rt testsuites.
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# It is mostly copied from lit.cfg used by Clang.
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import os
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import platform
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import re
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import subprocess
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import lit.formats
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import lit.util
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# Setup test format. Use bash on Unix and the lit shell on Windows.
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execute_external = (not sys.platform in ['win32'])
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config.test_format = lit.formats.ShTest(execute_external)
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if execute_external:
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config.available_features.add('shell')
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# Setup clang binary.
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compiler_path = getattr(config, 'clang', None)
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if (not compiler_path) or (not os.path.exists(compiler_path)):
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lit_config.fatal("Can't find compiler on path %r" % compiler_path)
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compiler_id = getattr(config, 'compiler_id', None)
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if compiler_id == "Clang":
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if platform.system() != 'Windows':
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config.cxx_mode_flags = ["--driver-mode=g++"]
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else:
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config.cxx_mode_flags = []
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# We assume that sanitizers should provide good enough error
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# reports and stack traces even with minimal debug info.
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config.debug_info_flags = ["-gline-tables-only"]
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if platform.system() == 'Windows':
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config.debug_info_flags.append("-gcodeview")
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elif compiler_id == 'GNU':
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config.cxx_mode_flags = ["-x c++"]
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config.debug_info_flags = ["-g"]
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else:
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lit_config.fatal("Unsupported compiler id: %r" % compiler_id)
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# Add compiler ID to the list of available features.
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config.available_features.add(compiler_id)
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# Clear some environment variables that might affect Clang.
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possibly_dangerous_env_vars = ['ASAN_OPTIONS', 'DFSAN_OPTIONS', 'LSAN_OPTIONS',
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'MSAN_OPTIONS', 'UBSAN_OPTIONS',
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'COMPILER_PATH', 'RC_DEBUG_OPTIONS',
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'CINDEXTEST_PREAMBLE_FILE', 'LIBRARY_PATH',
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'CPATH', 'C_INCLUDE_PATH', 'CPLUS_INCLUDE_PATH',
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'OBJC_INCLUDE_PATH', 'OBJCPLUS_INCLUDE_PATH',
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'LIBCLANG_TIMING', 'LIBCLANG_OBJTRACKING',
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'LIBCLANG_LOGGING', 'LIBCLANG_BGPRIO_INDEX',
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'LIBCLANG_BGPRIO_EDIT', 'LIBCLANG_NOTHREADS',
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'LIBCLANG_RESOURCE_USAGE',
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'LIBCLANG_CODE_COMPLETION_LOGGING']
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# Clang/Win32 may refer to %INCLUDE%. vsvarsall.bat sets it.
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if platform.system() != 'Windows':
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possibly_dangerous_env_vars.append('INCLUDE')
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for name in possibly_dangerous_env_vars:
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if name in config.environment:
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del config.environment[name]
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# Tweak PATH to include llvm tools dir.
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llvm_tools_dir = getattr(config, 'llvm_tools_dir', None)
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if (not llvm_tools_dir) or (not os.path.exists(llvm_tools_dir)):
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lit_config.fatal("Invalid llvm_tools_dir config attribute: %r" % llvm_tools_dir)
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path = os.path.pathsep.join((llvm_tools_dir, config.environment['PATH']))
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config.environment['PATH'] = path
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# Help MSVS link.exe find the standard libraries.
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# Make sure we only try to use it when targetting Windows.
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if platform.system() == 'Windows' and '-win' in config.target_triple:
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config.environment['LIB'] = os.environ['LIB']
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if re.match(r'^x86_64.*-linux', config.target_triple):
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config.available_features.add("x86_64-linux")
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# Use ugly construction to explicitly prohibit "clang", "clang++" etc.
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# in RUN lines.
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config.substitutions.append(
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(' clang', """\n\n*** Do not use 'clangXXX' in tests,
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instead define '%clangXXX' substitution in lit config. ***\n\n""") )
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# Allow tests to be executed on a simulator or remotely.
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config.substitutions.append( ('%run', config.emulator) )
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# Define CHECK-%os to check for OS-dependent output.
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config.substitutions.append( ('CHECK-%os', ("CHECK-" + config.host_os)))
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if config.host_os == 'Windows':
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# FIXME: This isn't quite right. Specifically, it will succeed if the program
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# does not crash but exits with a non-zero exit code. We ought to merge
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# KillTheDoctor and not --crash to make the latter more useful and remove the
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# need for this substitution.
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config.expect_crash = "not KillTheDoctor "
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else:
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config.expect_crash = "not --crash "
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config.substitutions.append( ("%expect_crash ", config.expect_crash) )
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target_arch = getattr(config, 'target_arch', None)
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if target_arch:
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config.available_features.add(target_arch + '-target-arch')
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if target_arch in ['x86_64', 'i386', 'i686']:
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config.available_features.add('x86-target-arch')
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compiler_rt_debug = getattr(config, 'compiler_rt_debug', False)
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if not compiler_rt_debug:
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config.available_features.add('compiler-rt-optimized')
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sanitizer_can_use_cxxabi = getattr(config, 'sanitizer_can_use_cxxabi', True)
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if sanitizer_can_use_cxxabi:
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config.available_features.add('cxxabi')
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if config.has_lld:
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config.available_features.add('lld')
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if config.can_symbolize:
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config.available_features.add('can-symbolize')
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lit.util.usePlatformSdkOnDarwin(config, lit_config)
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if config.host_os == 'Darwin':
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try:
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osx_version = subprocess.check_output(["sw_vers", "-productVersion"])
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osx_version = tuple(int(x) for x in osx_version.split('.'))
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if osx_version >= (10, 11):
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config.available_features.add('osx-autointerception')
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config.available_features.add('osx-ld64-live_support')
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else:
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# The ASAN initialization-bug.cc test should XFAIL on OS X systems
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# older than El Capitan. By marking the test as being unsupported with
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# this "feature", we can pass the test on newer OS X versions and other
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# platforms.
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config.available_features.add('osx-no-ld64-live_support')
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except:
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pass
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sancovcc_path = os.path.join(llvm_tools_dir, "sancov")
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if os.path.exists(sancovcc_path):
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config.available_features.add("has_sancovcc")
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config.substitutions.append( ("%sancovcc ", sancovcc_path) )
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def is_darwin_lto_supported():
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return os.path.exists(os.path.join(config.llvm_shlib_dir, 'libLTO.dylib'))
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def is_linux_lto_supported():
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if not os.path.exists(os.path.join(config.llvm_shlib_dir, 'LLVMgold.so')):
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return False
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ld_cmd = subprocess.Popen([config.gold_executable, '--help'], stdout = subprocess.PIPE)
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ld_out = ld_cmd.stdout.read().decode()
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ld_cmd.wait()
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if not '-plugin' in ld_out:
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return False
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return True
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def is_windows_lto_supported():
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return os.path.exists(os.path.join(config.llvm_tools_dir, 'lld-link.exe'))
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if config.host_os == 'Darwin' and is_darwin_lto_supported():
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config.lto_supported = True
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config.lto_launch = ["env", "DYLD_LIBRARY_PATH=" + config.llvm_shlib_dir]
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config.lto_flags = []
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elif config.host_os == 'Linux' and is_linux_lto_supported():
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config.lto_supported = True
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config.lto_launch = []
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config.lto_flags = ["-fuse-ld=gold"]
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elif config.host_os == 'Windows' and is_windows_lto_supported():
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config.lto_supported = True
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config.lto_launch = []
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config.lto_flags = ["-fuse-ld=lld"]
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else:
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config.lto_supported = False
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# Ask llvm-config about assertion mode.
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try:
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llvm_config_cmd = subprocess.Popen(
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[os.path.join(config.llvm_tools_dir, 'llvm-config'), '--assertion-mode'],
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stdout = subprocess.PIPE,
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env=config.environment)
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except OSError:
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print("Could not find llvm-config in " + llvm_tools_dir)
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exit(42)
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if re.search(r'ON', llvm_config_cmd.stdout.read().decode('ascii')):
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config.available_features.add('asserts')
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llvm_config_cmd.wait()
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# Sanitizer tests tend to be flaky on Windows due to PR24554, so add some
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# retries. We don't do this on otther platforms because it's slower.
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if platform.system() == 'Windows':
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config.test_retry_attempts = 2
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