mirror of https://github.com/llvm/torch-mlir
73 lines
2.1 KiB
Python
73 lines
2.1 KiB
Python
# Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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# See https://llvm.org/LICENSE.txt for license information.
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# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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import contextlib
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import io
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import os
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import subprocess
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import sys
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_disable_var = "NPCOMP_DISABLE_FILECHECK"
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_filecheck_binary_var = "FILECHECK_BINARY"
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_redirect_io = None
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_redirect_context = None
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def is_filecheck_disabled():
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return _disable_var in os.environ
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def start_filecheck_test():
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if is_filecheck_disabled():
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print("WARNING:FileCheck disabled due to", _disable_var,
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"in the environment", file=sys.stderr)
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return
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global _redirect_io
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global _redirect_context
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_redirect_io = io.StringIO()
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_redirect_context = contextlib.redirect_stdout(_redirect_io)
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_redirect_context.__enter__()
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def end_filecheck_test(main_file):
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if is_filecheck_disabled(): return
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global _redirect_io
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global _redirect_context
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_redirect_context.__exit__(None, None, None)
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_redirect_context = None
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_redirect_io.flush()
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filecheck_input = _redirect_io.getvalue()
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_redirect_io = None
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filecheck_binary = "FileCheck"
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if _filecheck_binary_var in os.environ:
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filecheck_binary = os.environ[_filecheck_binary_var]
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filecheck_args = [filecheck_binary, main_file, "--dump-input=fail"]
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p = subprocess.Popen(filecheck_args, stdin=subprocess.PIPE)
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p.communicate(filecheck_input.encode("UTF-8"))
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sys.exit(p.returncode)
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def run_under_filecheck(main_file, callback, disable_filecheck=False):
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"""Runs a callback under a FileCheck sub-process.
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This is typically called from a main context and will sys.exit on
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completion.
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Args:
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main_file: The file to process filecheck directives on. Typically
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__file__ from the caller's perspective.
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callback: The no-argument callback to invoke.
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disable_filecheck: Whether to disable filecheck.
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"""
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if disable_filecheck or is_filecheck_disabled():
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print("WARNING:FileCheck disabled due to", _disable_var,
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"in the environment", file=sys.stderr)
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callback()
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sys.exit(0)
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try:
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start_filecheck_test()
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callback()
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finally:
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end_filecheck_test(main_file)
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