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lit.common.cfg
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lit.common.cfg
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# -*- Python -*-
# Configuration file for 'lit' test runner.
# This file contains common rules for various compiler-rt testsuites.
# It is mostly copied from lit.cfg used by Clang.
import os
import platform
import re
import subprocess
import lit.formats
import lit.util
# Setup test format. Use bash on Unix and the lit shell on Windows.
execute_external = (not sys.platform in ['win32'])
config.test_format = lit.formats.ShTest(execute_external)
if execute_external:
config.available_features.add('shell')
# Setup clang binary.
compiler_path = getattr(config, 'clang', None)
if (not compiler_path) or (not os.path.exists(compiler_path)):
lit_config.fatal("Can't find compiler on path %r" % compiler_path)
compiler_id = getattr(config, 'compiler_id', None)
if compiler_id == "Clang":
if platform.system() != 'Windows':
config.cxx_mode_flags = ["--driver-mode=g++"]
else:
config.cxx_mode_flags = []
# We assume that sanitizers should provide good enough error
# reports and stack traces even with minimal debug info.
config.debug_info_flags = ["-gline-tables-only"]
if platform.system() == 'Windows':
config.debug_info_flags.append("-gcodeview")
elif compiler_id == 'GNU':
config.cxx_mode_flags = ["-x c++"]
config.debug_info_flags = ["-g"]
else:
lit_config.fatal("Unsupported compiler id: %r" % compiler_id)
# Add compiler ID to the list of available features.
config.available_features.add(compiler_id)
# Clear some environment variables that might affect Clang.
possibly_dangerous_env_vars = ['ASAN_OPTIONS', 'DFSAN_OPTIONS', 'LSAN_OPTIONS',
'MSAN_OPTIONS', 'UBSAN_OPTIONS',
'COMPILER_PATH', 'RC_DEBUG_OPTIONS',
'CINDEXTEST_PREAMBLE_FILE', 'LIBRARY_PATH',
'CPATH', 'C_INCLUDE_PATH', 'CPLUS_INCLUDE_PATH',
'OBJC_INCLUDE_PATH', 'OBJCPLUS_INCLUDE_PATH',
'LIBCLANG_TIMING', 'LIBCLANG_OBJTRACKING',
'LIBCLANG_LOGGING', 'LIBCLANG_BGPRIO_INDEX',
'LIBCLANG_BGPRIO_EDIT', 'LIBCLANG_NOTHREADS',
'LIBCLANG_RESOURCE_USAGE',
'LIBCLANG_CODE_COMPLETION_LOGGING']
# Clang/Win32 may refer to %INCLUDE%. vsvarsall.bat sets it.
if platform.system() != 'Windows':
possibly_dangerous_env_vars.append('INCLUDE')
for name in possibly_dangerous_env_vars:
if name in config.environment:
del config.environment[name]
# Tweak PATH to include llvm tools dir.
llvm_tools_dir = getattr(config, 'llvm_tools_dir', None)
if (not llvm_tools_dir) or (not os.path.exists(llvm_tools_dir)):
lit_config.fatal("Invalid llvm_tools_dir config attribute: %r" % llvm_tools_dir)
path = os.path.pathsep.join((llvm_tools_dir, config.environment['PATH']))
config.environment['PATH'] = path
# Help MSVS link.exe find the standard libraries.
# Make sure we only try to use it when targetting Windows.
if platform.system() == 'Windows' and '-win' in config.target_triple:
config.environment['LIB'] = os.environ['LIB']
if re.match(r'^x86_64.*-linux', config.target_triple):
config.available_features.add("x86_64-linux")
# Use ugly construction to explicitly prohibit "clang", "clang++" etc.
# in RUN lines.
config.substitutions.append(
(' clang', """\n\n*** Do not use 'clangXXX' in tests,
instead define '%clangXXX' substitution in lit config. ***\n\n""") )
# Allow tests to be executed on a simulator or remotely.
config.substitutions.append( ('%run', config.emulator) )
# Define CHECK-%os to check for OS-dependent output.
config.substitutions.append( ('CHECK-%os', ("CHECK-" + config.host_os)))
if config.host_os == 'Windows':
# FIXME: This isn't quite right. Specifically, it will succeed if the program
# does not crash but exits with a non-zero exit code. We ought to merge
# KillTheDoctor and not --crash to make the latter more useful and remove the
# need for this substitution.
config.substitutions.append( ("%expect_crash ", "not KillTheDoctor ") )
else:
config.substitutions.append( ("%expect_crash ", "not --crash ") )
target_arch = getattr(config, 'target_arch', None)
if target_arch:
config.available_features.add(target_arch + '-target-arch')
if target_arch in ['x86_64', 'i386', 'i686']:
config.available_features.add('x86-target-arch')
compiler_rt_debug = getattr(config, 'compiler_rt_debug', False)
if not compiler_rt_debug:
config.available_features.add('compiler-rt-optimized')
sanitizer_can_use_cxxabi = getattr(config, 'sanitizer_can_use_cxxabi', True)
if sanitizer_can_use_cxxabi:
config.available_features.add('cxxabi')
if config.has_lld:
config.available_features.add('lld')
if config.can_symbolize:
config.available_features.add('can-symbolize')
lit.util.usePlatformSdkOnDarwin(config, lit_config)
if config.host_os == 'Darwin':
ld_cmd = subprocess.Popen(["bash", "-c", "sw_vers -productVersion | awk -F '.' '{print $1 \".\" $2}'"], stdout = subprocess.PIPE)
ld_out = ld_cmd.stdout.read().decode()
ld_cmd.wait()
osx_version = float(ld_out)
if osx_version >= 10.11:
config.available_features.add('osx-autointerception')
sancovcc_path = os.path.join(llvm_tools_dir, "sancov")
if os.path.exists(sancovcc_path):
config.available_features.add("has_sancovcc")
config.substitutions.append( ("%sancovcc ", sancovcc_path) )
def is_darwin_lto_supported():
return os.path.exists(os.path.join(config.llvm_shlib_dir, 'libLTO.dylib'))
def is_linux_lto_supported():
if not os.path.exists(os.path.join(config.llvm_shlib_dir, 'LLVMgold.so')):
return False
ld_cmd = subprocess.Popen([config.gold_executable, '--help'], stdout = subprocess.PIPE)
ld_out = ld_cmd.stdout.read().decode()
ld_cmd.wait()
if not '-plugin' in ld_out:
return False
return True
def is_windows_lto_supported():
return os.path.exists(os.path.join(config.llvm_tools_dir, 'lld-link.exe'))
if config.host_os == 'Darwin' and is_darwin_lto_supported():
config.lto_supported = True
config.lto_launch = ["env", "DYLD_LIBRARY_PATH=" + config.llvm_shlib_dir]
config.lto_flags = []
elif config.host_os == 'Linux' and is_linux_lto_supported():
config.lto_supported = True
config.lto_launch = []
config.lto_flags = ["-fuse-ld=gold"]
elif config.host_os == 'Windows' and is_windows_lto_supported():
config.lto_supported = True
config.lto_launch = []
config.lto_flags = ["-fuse-ld=lld"]
else:
config.lto_supported = False
# Ask llvm-config about assertion mode.
try:
llvm_config_cmd = subprocess.Popen(
[os.path.join(config.llvm_tools_dir, 'llvm-config'), '--assertion-mode'],
stdout = subprocess.PIPE,
env=config.environment)
except OSError:
print("Could not find llvm-config in " + llvm_tools_dir)
exit(42)
if re.search(r'ON', llvm_config_cmd.stdout.read().decode('ascii')):
config.available_features.add('asserts')
llvm_config_cmd.wait()
# Sanitizer tests tend to be flaky on Windows due to PR24554, so add some
# retries. We don't do this on otther platforms because it's slower.
if platform.system() == 'Windows':
config.test_retry_attempts = 2