458f1aae8d
#184545 default-enables the IO sandbox in assert-builds. This causes Clang using Polly to crash (#188568). The issue is that `PassBuilder` uses `vfs::getRealFileSystem()` by default which is considered a IO sandbox violation in the Clang process. With this PR store the VFS from the `PassBuilder` from the original `registerPollyPasses` call for creating other `PassBuilder` instances. This PR also adds infrastructure for running Polly in `clang` (in addition in `opt`). `opt` does not enable the sandbox such that we need separate tests using Clang. Closes: #188568
105 lines
3.5 KiB
INI
105 lines
3.5 KiB
INI
# -*clang- Python -*-
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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 shlex
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import lit.formats
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import lit.util
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from lit.llvm import llvm_config
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from lit.llvm.subst import ToolSubst
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# Configuration file for the 'lit' test runner.
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# name: The name of this test suite.
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config.name = 'Polly'
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# testFormat: The test format to use to interpret tests.
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#
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# For now we require '&&' between commands, until they get globally killed and
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# the test runner updated.
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#
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# TODO: Consolidate the logic for turning on the internal shell by default for all LLVM test suites.
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# See https://github.com/llvm/llvm-project/issues/106636 for more details.
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#
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# We prefer the lit internal shell which provides a better user experience on failures
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# unless the user explicitly disables it with LIT_USE_INTERNAL_SHELL=0 env var.
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use_lit_shell = True
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lit_shell_env = os.environ.get("LIT_USE_INTERNAL_SHELL")
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if lit_shell_env:
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use_lit_shell = lit.util.pythonize_bool(lit_shell_env)
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config.test_format = lit.formats.ShTest(execute_external=not use_lit_shell)
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# suffixes: A list of file extensions to treat as test files.
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config.suffixes = ['.ll']
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# test_source_root: The root path where tests are located.
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config.test_source_root = os.path.dirname(__file__)
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# test_exec_root: The root path where tests should be run.
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config.test_exec_root = os.path.join(config.polly_obj_root, 'test')
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# Tweak the PATH to include the tools dir and the scripts dir.
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base_paths = [config.llvm_tools_dir, config.environment['PATH']]
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path = os.path.pathsep.join(base_paths + config.extra_paths)
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config.environment['PATH'] = path
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path = os.path.pathsep.join((config.llvm_libs_dir,
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config.environment.get('LD_LIBRARY_PATH','')))
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config.environment['LD_LIBRARY_PATH'] = path
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llvm_config.use_default_substitutions()
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tool_patterns = ['opt', 'polly-isl-test']
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llvm_config.add_tool_substitutions(tool_patterns)
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if config.polly_test_c_compiler:
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config.suffixes += ['.c']
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llvm_polly_link_into_tools = lit.util.pythonize_bool(config.llvm_polly_link_into_tools)
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clang_args = []
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if not llvm_polly_link_into_tools:
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clang_args += [f'-fpass-plugin={config.polly_lib_dir}/LLVMPolly{config.llvm_shlibext}']
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llvm_config.add_tool_substitutions([
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ToolSubst("%clang",
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command = config.polly_test_c_compiler,
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extra_args = clang_args,
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unresolved = "fatal"
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)
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])
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lit_config.note(f"Using Clang: {config.polly_test_c_compiler} {shlex.join(clang_args)}")
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else:
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lit_config.note("Clang tests disabled: No compatible Clang found")
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# opt knows whether it is compiled with -DNDEBUG.
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import subprocess
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try:
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opt_cmd = subprocess.Popen([os.path.join(config.llvm_tools_dir, 'opt'), '-version'],
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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 opt in " + config.llvm_tools_dir)
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exit(42)
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if re.search(r'with assertions', opt_cmd.stdout.read().decode('ascii')):
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config.available_features.add('asserts')
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opt_cmd.wait()
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try:
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llvm_config_cmd = subprocess.Popen([os.path.join(
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config.llvm_tools_dir,
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'llvm-config'),
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'--targets-built'],
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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 " + config.llvm_tools_dir)
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exit(42)
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llvm_config_cmd.wait()
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