Add files using upload-large-folder tool

llvm/bin/analyze-build

@@ -0,0 +1,17 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+# Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+# See https://llvm.org/LICENSE.txt for license information.
+# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+
+import multiprocessing
+import sys
+import os.path
+this_dir = os.path.dirname(os.path.realpath(__file__))
+sys.path.append(os.path.join(os.path.dirname(this_dir), 'lib'))
+
+from libscanbuild.analyze import analyze_build
+
+if __name__ == '__main__':
+    multiprocessing.freeze_support()
+    sys.exit(analyze_build())

llvm/bin/git-clang-format

@@ -0,0 +1,694 @@
+#!/usr/bin/env python3
+#
+#===- git-clang-format - ClangFormat Git Integration ---------*- python -*--===#
+#
+# Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+# See https://llvm.org/LICENSE.txt for license information.
+# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+#
+#===------------------------------------------------------------------------===#
+
+r"""
+clang-format git integration
+============================
+
+This file provides a clang-format integration for git. Put it somewhere in your
+path and ensure that it is executable. Then, "git clang-format" will invoke
+clang-format on the changes in current files or a specific commit.
+
+For further details, run:
+git clang-format -h
+
+Requires Python 2.7 or Python 3
+"""
+
+from __future__ import absolute_import, division, print_function
+import argparse
+import collections
+import contextlib
+import errno
+import os
+import re
+import subprocess
+import sys
+
+usage = ('git clang-format [OPTIONS] [<commit>] [<commit>|--staged] '
+         '[--] [<file>...]')
+
+desc = '''
+If zero or one commits are given, run clang-format on all lines that differ
+between the working directory and <commit>, which defaults to HEAD.  Changes are
+only applied to the working directory, or in the stage/index.
+
+Examples:
+  To format staged changes, i.e everything that's been `git add`ed:
+    git clang-format
+
+  To also format everything touched in the most recent commit:
+    git clang-format HEAD~1
+
+  If you're on a branch off main, to format everything touched on your branch:
+    git clang-format main
+
+If two commits are given (requires --diff), run clang-format on all lines in the
+second <commit> that differ from the first <commit>.
+
+The following git-config settings set the default of the corresponding option:
+  clangFormat.binary
+  clangFormat.commit
+  clangFormat.extensions
+  clangFormat.style
+'''
+
+# Name of the temporary index file in which save the output of clang-format.
+# This file is created within the .git directory.
+temp_index_basename = 'clang-format-index'
+
+
+Range = collections.namedtuple('Range', 'start, count')
+
+
+def main():
+  config = load_git_config()
+
+  # In order to keep '--' yet allow options after positionals, we need to
+  # check for '--' ourselves.  (Setting nargs='*' throws away the '--', while
+  # nargs=argparse.REMAINDER disallows options after positionals.)
+  argv = sys.argv[1:]
+  try:
+    idx = argv.index('--')
+  except ValueError:
+    dash_dash = []
+  else:
+    dash_dash = argv[idx:]
+    argv = argv[:idx]
+
+  default_extensions = ','.join([
+      # From clang/lib/Frontend/FrontendOptions.cpp, all lower case
+      'c', 'h',  # C
+      'm',  # ObjC
+      'mm',  # ObjC++
+      'cc', 'cp', 'cpp', 'c++', 'cxx', 'hh', 'hpp', 'hxx', 'inc',  # C++
+      'ccm', 'cppm', 'cxxm', 'c++m',  # C++ Modules
+      'cu', 'cuh',  # CUDA
+      # Other languages that clang-format supports
+      'proto', 'protodevel',  # Protocol Buffers
+      'java',  # Java
+      'js',  # JavaScript
+      'ts',  # TypeScript
+      'cs',  # C Sharp
+      'json',  # Json
+      'sv', 'svh', 'v', 'vh', # Verilog
+      ])
+
+  p = argparse.ArgumentParser(
+    usage=usage, formatter_class=argparse.RawDescriptionHelpFormatter,
+    description=desc)
+  p.add_argument('--binary',
+                 default=config.get('clangformat.binary', 'clang-format'),
+                 help='path to clang-format'),
+  p.add_argument('--commit',
+                 default=config.get('clangformat.commit', 'HEAD'),
+                 help='default commit to use if none is specified'),
+  p.add_argument('--diff', action='store_true',
+                 help='print a diff instead of applying the changes')
+  p.add_argument('--diffstat', action='store_true',
+                 help='print a diffstat instead of applying the changes')
+  p.add_argument('--extensions',
+                 default=config.get('clangformat.extensions',
+                                    default_extensions),
+                 help=('comma-separated list of file extensions to format, '
+                       'excluding the period and case-insensitive')),
+  p.add_argument('-f', '--force', action='store_true',
+                 help='allow changes to unstaged files')
+  p.add_argument('-p', '--patch', action='store_true',
+                 help='select hunks interactively')
+  p.add_argument('-q', '--quiet', action='count', default=0,
+                 help='print less information')
+  p.add_argument('--staged', '--cached', action='store_true',
+                 help='format lines in the stage instead of the working dir')
+  p.add_argument('--style',
+                 default=config.get('clangformat.style', None),
+                 help='passed to clang-format'),
+  p.add_argument('-v', '--verbose', action='count', default=0,
+                 help='print extra information')
+  p.add_argument('--diff_from_common_commit', action='store_true',
+                 help=('diff from the last common commit for commits in '
+                      'separate branches rather than the exact point of the '
+                      'commits'))
+  # We gather all the remaining positional arguments into 'args' since we need
+  # to use some heuristics to determine whether or not <commit> was present.
+  # However, to print pretty messages, we make use of metavar and help.
+  p.add_argument('args', nargs='*', metavar='<commit>',
+                 help='revision from which to compute the diff')
+  p.add_argument('ignored', nargs='*', metavar='<file>...',
+                 help='if specified, only consider differences in these files')
+  opts = p.parse_args(argv)
+
+  opts.verbose -= opts.quiet
+  del opts.quiet
+
+  commits, files = interpret_args(opts.args, dash_dash, opts.commit)
+  if len(commits) > 2:
+    die('at most two commits allowed; %d given' % len(commits))
+  if len(commits) == 2:
+    if opts.staged:
+      die('--staged is not allowed when two commits are given')
+    if not opts.diff:
+      die('--diff is required when two commits are given')
+  elif opts.diff_from_common_commit:
+    die('--diff_from_common_commit is only allowed when two commits are given')
+
+  if os.path.dirname(opts.binary):
+    opts.binary = os.path.abspath(opts.binary)
+
+  changed_lines = compute_diff_and_extract_lines(commits,
+                                                 files,
+                                                 opts.staged,
+                                                 opts.diff_from_common_commit)
+  if opts.verbose >= 1:
+    ignored_files = set(changed_lines)
+  filter_by_extension(changed_lines, opts.extensions.lower().split(','))
+  # The computed diff outputs absolute paths, so we must cd before accessing
+  # those files.
+  cd_to_toplevel()
+  filter_symlinks(changed_lines)
+  filter_ignored_files(changed_lines, binary=opts.binary)
+  if opts.verbose >= 1:
+    ignored_files.difference_update(changed_lines)
+    if ignored_files:
+      print('Ignoring the following files (wrong extension, symlink, or '
+            'ignored by clang-format):')
+      for filename in ignored_files:
+        print('    %s' % filename)
+    if changed_lines:
+      print('Running clang-format on the following files:')
+      for filename in changed_lines:
+        print('    %s' % filename)
+
+  if not changed_lines:
+    if opts.verbose >= 0:
+      print('no modified files to format')
+    return 0
+
+  if len(commits) > 1:
+    old_tree = commits[1]
+    revision = old_tree
+  elif opts.staged:
+    old_tree = create_tree_from_index(changed_lines)
+    revision = ''
+  else:
+    old_tree = create_tree_from_workdir(changed_lines)
+    revision = None
+  new_tree = run_clang_format_and_save_to_tree(changed_lines,
+                                               revision,
+                                               binary=opts.binary,
+                                               style=opts.style)
+  if opts.verbose >= 1:
+    print('old tree: %s' % old_tree)
+    print('new tree: %s' % new_tree)
+
+  if old_tree == new_tree:
+    if opts.verbose >= 0:
+      print('clang-format did not modify any files')
+    return 0
+
+  if opts.diff:
+    return print_diff(old_tree, new_tree)
+  if opts.diffstat:
+    return print_diffstat(old_tree, new_tree)
+
+  changed_files = apply_changes(old_tree, new_tree, force=opts.force,
+                                patch_mode=opts.patch)
+  if (opts.verbose >= 0 and not opts.patch) or opts.verbose >= 1:
+    print('changed files:')
+    for filename in changed_files:
+      print('    %s' % filename)
+
+  return 1
+
+
+def load_git_config(non_string_options=None):
+  """Return the git configuration as a dictionary.
+
+  All options are assumed to be strings unless in `non_string_options`, in which
+  is a dictionary mapping option name (in lower case) to either "--bool" or
+  "--int"."""
+  if non_string_options is None:
+    non_string_options = {}
+  out = {}
+  for entry in run('git', 'config', '--list', '--null').split('\0'):
+    if entry:
+      if '\n' in entry:
+        name, value = entry.split('\n', 1)
+      else:
+        # A setting with no '=' ('\n' with --null) is implicitly 'true'
+        name = entry
+        value = 'true'
+      if name in non_string_options:
+        value = run('git', 'config', non_string_options[name], name)
+      out[name] = value
+  return out
+
+
+def interpret_args(args, dash_dash, default_commit):
+  """Interpret `args` as "[commits] [--] [files]" and return (commits, files).
+
+  It is assumed that "--" and everything that follows has been removed from
+  args and placed in `dash_dash`.
+
+  If "--" is present (i.e., `dash_dash` is non-empty), the arguments to its
+  left (if present) are taken as commits.  Otherwise, the arguments are checked
+  from left to right if they are commits or files.  If commits are not given,
+  a list with `default_commit` is used."""
+  if dash_dash:
+    if len(args) == 0:
+      commits = [default_commit]
+    else:
+      commits = args
+    for commit in commits:
+      object_type = get_object_type(commit)
+      if object_type not in ('commit', 'tag'):
+        if object_type is None:
+          die("'%s' is not a commit" % commit)
+        else:
+          die("'%s' is a %s, but a commit was expected" % (commit, object_type))
+    files = dash_dash[1:]
+  elif args:
+    commits = []
+    while args:
+      if not disambiguate_revision(args[0]):
+        break
+      commits.append(args.pop(0))
+    if not commits:
+      commits = [default_commit]
+    files = args
+  else:
+    commits = [default_commit]
+    files = []
+  return commits, files
+
+
+def disambiguate_revision(value):
+  """Returns True if `value` is a revision, False if it is a file, or dies."""
+  # If `value` is ambiguous (neither a commit nor a file), the following
+  # command will die with an appropriate error message.
+  run('git', 'rev-parse', value, verbose=False)
+  object_type = get_object_type(value)
+  if object_type is None:
+    return False
+  if object_type in ('commit', 'tag'):
+    return True
+  die('`%s` is a %s, but a commit or filename was expected' %
+      (value, object_type))
+
+
+def get_object_type(value):
+  """Returns a string description of an object's type, or None if it is not
+  a valid git object."""
+  cmd = ['git', 'cat-file', '-t', value]
+  p = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
+  stdout, stderr = p.communicate()
+  if p.returncode != 0:
+    return None
+  return convert_string(stdout.strip())
+
+
+def compute_diff_and_extract_lines(commits, files, staged, diff_common_commit):
+  """Calls compute_diff() followed by extract_lines()."""
+  diff_process = compute_diff(commits, files, staged, diff_common_commit)
+  changed_lines = extract_lines(diff_process.stdout)
+  diff_process.stdout.close()
+  diff_process.wait()
+  if diff_process.returncode != 0:
+    # Assume error was already printed to stderr.
+    sys.exit(2)
+  return changed_lines
+
+
+def compute_diff(commits, files, staged, diff_common_commit):
+  """Return a subprocess object producing the diff from `commits`.
+
+  The return value's `stdin` file object will produce a patch with the
+  differences between the working directory (or stage if --staged is used) and
+  the first commit if a single one was specified, or the difference between
+  both specified commits, filtered on `files` (if non-empty).
+  Zero context lines are used in the patch."""
+  git_tool = 'diff-index'
+  extra_args = []
+  if len(commits) == 2:
+    git_tool = 'diff-tree'
+    if diff_common_commit:
+      commits = [f'{commits[0]}...{commits[1]}']
+  elif staged:
+    extra_args += ['--cached']
+
+  cmd = ['git', git_tool, '-p', '-U0'] + extra_args + commits + ['--']
+  cmd.extend(files)
+  p = subprocess.Popen(cmd, stdin=subprocess.PIPE, stdout=subprocess.PIPE)
+  p.stdin.close()
+  return p
+
+
+def extract_lines(patch_file):
+  """Extract the changed lines in `patch_file`.
+
+  The return value is a dictionary mapping filename to a list of (start_line,
+  line_count) pairs.
+
+  The input must have been produced with ``-U0``, meaning unidiff format with
+  zero lines of context.  The return value is a dict mapping filename to a
+  list of line `Range`s."""
+  matches = {}
+  for line in patch_file:
+    line = convert_string(line)
+    match = re.search(r'^\+\+\+\ [^/]+/(.*)', line)
+    if match:
+      filename = match.group(1).rstrip('\r\n\t')
+    match = re.search(r'^@@ -[0-9,]+ \+(\d+)(,(\d+))?', line)
+    if match:
+      start_line = int(match.group(1))
+      line_count = 1
+      if match.group(3):
+        line_count = int(match.group(3))
+      if line_count == 0:
+        line_count = 1
+      if start_line == 0:
+        continue
+      matches.setdefault(filename, []).append(Range(start_line, line_count))
+  return matches
+
+
+def filter_by_extension(dictionary, allowed_extensions):
+  """Delete every key in `dictionary` that doesn't have an allowed extension.
+
+  `allowed_extensions` must be a collection of lowercase file extensions,
+  excluding the period."""
+  allowed_extensions = frozenset(allowed_extensions)
+  for filename in list(dictionary.keys()):
+    base_ext = filename.rsplit('.', 1)
+    if len(base_ext) == 1 and '' in allowed_extensions:
+        continue
+    if len(base_ext) == 1 or base_ext[1].lower() not in allowed_extensions:
+      del dictionary[filename]
+
+
+def filter_symlinks(dictionary):
+  """Delete every key in `dictionary` that is a symlink."""
+  for filename in list(dictionary.keys()):
+    if os.path.islink(filename):
+      del dictionary[filename]
+
+
+def filter_ignored_files(dictionary, binary):
+  """Delete every key in `dictionary` that is ignored by clang-format."""
+  ignored_files = run(binary, '-list-ignored', *dictionary.keys())
+  if not ignored_files:
+    return
+  ignored_files = ignored_files.split('\n')
+  for filename in ignored_files:
+    del dictionary[filename]
+
+
+def cd_to_toplevel():
+  """Change to the top level of the git repository."""
+  toplevel = run('git', 'rev-parse', '--show-toplevel')
+  os.chdir(toplevel)
+
+
+def create_tree_from_workdir(filenames):
+  """Create a new git tree with the given files from the working directory.
+
+  Returns the object ID (SHA-1) of the created tree."""
+  return create_tree(filenames, '--stdin')
+
+
+def create_tree_from_index(filenames):
+  # Copy the environment, because the files have to be read from the original
+  # index.
+  env = os.environ.copy()
+  def index_contents_generator():
+    for filename in filenames:
+      git_ls_files_cmd = ['git', 'ls-files', '--stage', '-z', '--', filename]
+      git_ls_files = subprocess.Popen(git_ls_files_cmd, env=env,
+                                      stdin=subprocess.PIPE,
+                                      stdout=subprocess.PIPE)
+      stdout = git_ls_files.communicate()[0]
+      yield convert_string(stdout.split(b'\0')[0])
+  return create_tree(index_contents_generator(), '--index-info')
+
+
+def run_clang_format_and_save_to_tree(changed_lines, revision=None,
+                                      binary='clang-format', style=None):
+  """Run clang-format on each file and save the result to a git tree.
+
+  Returns the object ID (SHA-1) of the created tree."""
+  # Copy the environment when formatting the files in the index, because the
+  # files have to be read from the original index.
+  env = os.environ.copy() if revision == '' else None
+  def iteritems(container):
+      try:
+          return container.iteritems() # Python 2
+      except AttributeError:
+          return container.items() # Python 3
+  def index_info_generator():
+    for filename, line_ranges in iteritems(changed_lines):
+      if revision is not None:
+        if len(revision) > 0:
+          git_metadata_cmd = ['git', 'ls-tree',
+                              '%s:%s' % (revision, os.path.dirname(filename)),
+                              os.path.basename(filename)]
+        else:
+          git_metadata_cmd = ['git', 'ls-files', '--stage', '--', filename]
+        git_metadata = subprocess.Popen(git_metadata_cmd, env=env,
+                                        stdin=subprocess.PIPE,
+                                        stdout=subprocess.PIPE)
+        stdout = git_metadata.communicate()[0]
+        mode = oct(int(stdout.split()[0], 8))
+      else:
+        mode = oct(os.stat(filename).st_mode)
+      # Adjust python3 octal format so that it matches what git expects
+      if mode.startswith('0o'):
+          mode = '0' + mode[2:]
+      blob_id = clang_format_to_blob(filename, line_ranges,
+                                     revision=revision,
+                                     binary=binary,
+                                     style=style,
+                                     env=env)
+      yield '%s %s\t%s' % (mode, blob_id, filename)
+  return create_tree(index_info_generator(), '--index-info')
+
+
+def create_tree(input_lines, mode):
+  """Create a tree object from the given input.
+
+  If mode is '--stdin', it must be a list of filenames.  If mode is
+  '--index-info' is must be a list of values suitable for "git update-index
+  --index-info", such as "<mode> <SP> <sha1> <TAB> <filename>".  Any other mode
+  is invalid."""
+  assert mode in ('--stdin', '--index-info')
+  cmd = ['git', 'update-index', '--add', '-z', mode]
+  with temporary_index_file():
+    p = subprocess.Popen(cmd, stdin=subprocess.PIPE)
+    for line in input_lines:
+      p.stdin.write(to_bytes('%s\0' % line))
+    p.stdin.close()
+    if p.wait() != 0:
+      die('`%s` failed' % ' '.join(cmd))
+    tree_id = run('git', 'write-tree')
+    return tree_id
+
+
+def clang_format_to_blob(filename, line_ranges, revision=None,
+                         binary='clang-format', style=None, env=None):
+  """Run clang-format on the given file and save the result to a git blob.
+
+  Runs on the file in `revision` if not None, or on the file in the working
+  directory if `revision` is None. Revision can be set to an empty string to run
+  clang-format on the file in the index.
+
+  Returns the object ID (SHA-1) of the created blob."""
+  clang_format_cmd = [binary]
+  if style:
+    clang_format_cmd.extend(['-style='+style])
+  clang_format_cmd.extend([
+      '-lines=%s:%s' % (start_line, start_line+line_count-1)
+      for start_line, line_count in line_ranges])
+  if revision is not None:
+    clang_format_cmd.extend(['-assume-filename='+filename])
+    git_show_cmd = ['git', 'cat-file', 'blob', '%s:%s' % (revision, filename)]
+    git_show = subprocess.Popen(git_show_cmd, env=env, stdin=subprocess.PIPE,
+                                stdout=subprocess.PIPE)
+    git_show.stdin.close()
+    clang_format_stdin = git_show.stdout
+  else:
+    clang_format_cmd.extend([filename])
+    git_show = None
+    clang_format_stdin = subprocess.PIPE
+  try:
+    clang_format = subprocess.Popen(clang_format_cmd, stdin=clang_format_stdin,
+                                    stdout=subprocess.PIPE)
+    if clang_format_stdin == subprocess.PIPE:
+      clang_format_stdin = clang_format.stdin
+  except OSError as e:
+    if e.errno == errno.ENOENT:
+      die('cannot find executable "%s"' % binary)
+    else:
+      raise
+  clang_format_stdin.close()
+  hash_object_cmd = ['git', 'hash-object', '-w', '--path='+filename, '--stdin']
+  hash_object = subprocess.Popen(hash_object_cmd, stdin=clang_format.stdout,
+                                 stdout=subprocess.PIPE)
+  clang_format.stdout.close()
+  stdout = hash_object.communicate()[0]
+  if hash_object.returncode != 0:
+    die('`%s` failed' % ' '.join(hash_object_cmd))
+  if clang_format.wait() != 0:
+    die('`%s` failed' % ' '.join(clang_format_cmd))
+  if git_show and git_show.wait() != 0:
+    die('`%s` failed' % ' '.join(git_show_cmd))
+  return convert_string(stdout).rstrip('\r\n')
+
+
+@contextlib.contextmanager
+def temporary_index_file(tree=None):
+  """Context manager for setting GIT_INDEX_FILE to a temporary file and deleting
+  the file afterward."""
+  index_path = create_temporary_index(tree)
+  old_index_path = os.environ.get('GIT_INDEX_FILE')
+  os.environ['GIT_INDEX_FILE'] = index_path
+  try:
+    yield
+  finally:
+    if old_index_path is None:
+      del os.environ['GIT_INDEX_FILE']
+    else:
+      os.environ['GIT_INDEX_FILE'] = old_index_path
+    os.remove(index_path)
+
+
+def create_temporary_index(tree=None):
+  """Create a temporary index file and return the created file's path.
+
+  If `tree` is not None, use that as the tree to read in.  Otherwise, an
+  empty index is created."""
+  gitdir = run('git', 'rev-parse', '--git-dir')
+  path = os.path.join(gitdir, temp_index_basename)
+  if tree is None:
+    tree = '--empty'
+  run('git', 'read-tree', '--index-output='+path, tree)
+  return path
+
+
+def print_diff(old_tree, new_tree):
+  """Print the diff between the two trees to stdout."""
+  # We use the porcelain 'diff' and not plumbing 'diff-tree' because the output
+  # is expected to be viewed by the user, and only the former does nice things
+  # like color and pagination.
+  #
+  # We also only print modified files since `new_tree` only contains the files
+  # that were modified, so unmodified files would show as deleted without the
+  # filter.
+  return subprocess.run(['git', 'diff', '--diff-filter=M',
+                         '--exit-code', old_tree, new_tree]).returncode
+
+def print_diffstat(old_tree, new_tree):
+  """Print the diffstat between the two trees to stdout."""
+  # We use the porcelain 'diff' and not plumbing 'diff-tree' because the output
+  # is expected to be viewed by the user, and only the former does nice things
+  # like color and pagination.
+  #
+  # We also only print modified files since `new_tree` only contains the files
+  # that were modified, so unmodified files would show as deleted without the
+  # filter.
+  return subprocess.run(['git', 'diff', '--diff-filter=M', '--exit-code',
+                         '--stat', old_tree, new_tree]).returncode
+
+def apply_changes(old_tree, new_tree, force=False, patch_mode=False):
+  """Apply the changes in `new_tree` to the working directory.
+
+  Bails if there are local changes in those files and not `force`.  If
+  `patch_mode`, runs `git checkout --patch` to select hunks interactively."""
+  changed_files = run('git', 'diff-tree', '--diff-filter=M', '-r', '-z',
+                      '--name-only', old_tree,
+                      new_tree).rstrip('\0').split('\0')
+  if not force:
+    unstaged_files = run('git', 'diff-files', '--name-status', *changed_files)
+    if unstaged_files:
+      print('The following files would be modified but '
+                'have unstaged changes:', file=sys.stderr)
+      print(unstaged_files, file=sys.stderr)
+      print('Please commit, stage, or stash them first.', file=sys.stderr)
+      sys.exit(2)
+  if patch_mode:
+    # In patch mode, we could just as well create an index from the new tree
+    # and checkout from that, but then the user will be presented with a
+    # message saying "Discard ... from worktree".  Instead, we use the old
+    # tree as the index and checkout from new_tree, which gives the slightly
+    # better message, "Apply ... to index and worktree".  This is not quite
+    # right, since it won't be applied to the user's index, but oh well.
+    with temporary_index_file(old_tree):
+      subprocess.run(['git', 'checkout', '--patch', new_tree], check=True)
+    index_tree = old_tree
+  else:
+    with temporary_index_file(new_tree):
+      run('git', 'checkout-index', '-f', '--', *changed_files)
+  return changed_files
+
+
+def run(*args, **kwargs):
+  stdin = kwargs.pop('stdin', '')
+  verbose = kwargs.pop('verbose', True)
+  strip = kwargs.pop('strip', True)
+  for name in kwargs:
+    raise TypeError("run() got an unexpected keyword argument '%s'" % name)
+  p = subprocess.Popen(args, stdout=subprocess.PIPE, stderr=subprocess.PIPE,
+                       stdin=subprocess.PIPE)
+  stdout, stderr = p.communicate(input=stdin)
+
+  stdout = convert_string(stdout)
+  stderr = convert_string(stderr)
+
+  if p.returncode == 0:
+    if stderr:
+      if verbose:
+        print('`%s` printed to stderr:' % ' '.join(args), file=sys.stderr)
+      print(stderr.rstrip(), file=sys.stderr)
+    if strip:
+      stdout = stdout.rstrip('\r\n')
+    return stdout
+  if verbose:
+    print('`%s` returned %s' % (' '.join(args), p.returncode), file=sys.stderr)
+  if stderr:
+    print(stderr.rstrip(), file=sys.stderr)
+  sys.exit(2)
+
+
+def die(message):
+  print('error:', message, file=sys.stderr)
+  sys.exit(2)
+
+
+def to_bytes(str_input):
+    # Encode to UTF-8 to get binary data.
+    if isinstance(str_input, bytes):
+        return str_input
+    return str_input.encode('utf-8')
+
+
+def to_string(bytes_input):
+    if isinstance(bytes_input, str):
+        return bytes_input
+    return bytes_input.encode('utf-8')
+
+
+def convert_string(bytes_input):
+    try:
+        return to_string(bytes_input.decode('utf-8'))
+    except AttributeError: # 'str' object has no attribute 'decode'.
+        return str(bytes_input)
+    except UnicodeError:
+        return str(bytes_input)
+
+if __name__ == '__main__':
+  sys.exit(main())

llvm/bin/git-clang-format.bat

@@ -0,0 +1 @@
+py -3 %~pn0 %*

llvm/bin/hmaptool

@@ -0,0 +1,297 @@
+#!/usr/bin/env python3
+from __future__ import absolute_import, division, print_function
+
+from ctypes import ArgumentError
+import json
+import optparse
+import os
+import struct
+import sys
+
+###
+
+k_header_magic_LE = b'pamh'
+k_header_magic_BE = b'hmap'
+
+def hmap_hash(str):
+    """hash(str) -> int
+
+    Apply the "well-known" headermap hash function.
+    """
+
+    return sum((ord(c.lower()) * 13
+                for c in str), 0)
+
+class HeaderMap(object):
+    @staticmethod
+    def frompath(path):
+        with open(path, 'rb') as f:
+            magic = f.read(4)
+            if magic == k_header_magic_LE:
+                endian_code = '<'
+            elif magic == k_header_magic_BE:
+                endian_code = '>'
+            else:
+                raise SystemExit("error: %s: not a headermap" % (
+                        path,))
+
+            # Read the header information.
+            header_fmt = endian_code + 'HHIIII'
+            header_size = struct.calcsize(header_fmt)
+            data = f.read(header_size)
+            if len(data) != header_size:
+                raise SystemExit("error: %s: truncated headermap header" % (
+                        path,))
+
+            (version, reserved, strtable_offset, num_entries,
+             num_buckets, _) = struct.unpack(header_fmt, data)
+
+            if version != 1:
+                raise SystemExit("error: %s: unknown headermap version: %r" % (
+                        path, version))
+            if reserved != 0:
+                raise SystemExit("error: %s: invalid reserved value in header" % (
+                        path,))
+
+            # The number of buckets must be a power of two.
+            if num_buckets == 0 or (num_buckets & num_buckets - 1) != 0:
+                raise SystemExit("error: %s: invalid number of buckets" % (
+                        path,))
+
+            # Read all of the buckets.
+            bucket_fmt = endian_code + 'III'
+            bucket_size = struct.calcsize(bucket_fmt)
+            buckets_data = f.read(num_buckets * bucket_size)
+            if len(buckets_data) != num_buckets * bucket_size:
+                raise SystemExit("error: %s: truncated headermap buckets" % (
+                        path,))
+            buckets = [struct.unpack(bucket_fmt,
+                                     buckets_data[i*bucket_size:(i+1)*bucket_size])
+                       for i in range(num_buckets)]
+
+            # Read the string table; the format doesn't explicitly communicate the
+            # size of the string table (which is dumb), so assume it is the rest of
+            # the file.
+            f.seek(0, 2)
+            strtable_size = f.tell() - strtable_offset
+            f.seek(strtable_offset)
+
+            if strtable_size == 0:
+                raise SystemExit("error: %s: unable to read zero-sized string table"%(
+                        path,))
+            strtable = f.read(strtable_size)
+
+            if len(strtable) != strtable_size:
+                raise SystemExit("error: %s: unable to read complete string table"%(
+                        path,))
+            if strtable[-1] != 0:
+                raise SystemExit("error: %s: invalid string table in headermap" % (
+                        path,))
+
+            return HeaderMap(num_entries, buckets, strtable)
+
+    def __init__(self, num_entries, buckets, strtable):
+        self.num_entries = num_entries
+        self.buckets = buckets
+        self.strtable = strtable
+
+    def get_string(self, idx):
+        if idx >= len(self.strtable):
+            raise SystemExit("error: %s: invalid string index" % (
+                    idx,))
+        end_idx = self.strtable.index(0, idx)
+        return self.strtable[idx:end_idx].decode()
+
+    @property
+    def mappings(self):
+        for key_idx,prefix_idx,suffix_idx in self.buckets:
+            if key_idx == 0:
+                continue
+            yield (self.get_string(key_idx),
+                   self.get_string(prefix_idx) + self.get_string(suffix_idx))
+
+###
+
+def action_dump(name, args):
+    "dump a headermap file"
+
+    parser = optparse.OptionParser("%%prog %s [options] <headermap path>" % (
+            name,))
+    parser.add_option("-v", "--verbose", dest="verbose",
+                      help="show more verbose output [%default]",
+                      action="store_true", default=False)
+    (opts, args) = parser.parse_args(args)
+
+    if len(args) != 1:
+        parser.error("invalid number of arguments")
+
+    path, = args
+
+    hmap = HeaderMap.frompath(path)
+
+    # Dump all of the buckets.
+    print ('Header Map: %s' % (path,))
+    if opts.verbose:
+        print ('headermap: %r' % (path,))
+        print ('  num entries: %d' % (hmap.num_entries,))
+        print ('  num buckets: %d' % (len(hmap.buckets),))
+        print ('  string table size: %d' % (len(hmap.strtable),))
+        for i,bucket in enumerate(hmap.buckets):
+            key_idx,prefix_idx,suffix_idx = bucket
+
+            if key_idx == 0:
+                continue
+
+            # Get the strings.
+            key = hmap.get_string(key_idx)
+            prefix = hmap.get_string(prefix_idx)
+            suffix = hmap.get_string(suffix_idx)
+
+            print ("  bucket[%d]: %r -> (%r, %r) -- %d" % (
+                i, key, prefix, suffix, (hmap_hash(key) & (len(hmap.buckets) - 1))))
+    else:
+        mappings = sorted(hmap.mappings)
+        for key,value in mappings:
+            print ("%s -> %s" % (key, value))
+    print ()
+
+def next_power_of_two(value):
+    if value < 0:
+        raise ArgumentError
+    return 1 if value == 0 else 2**(value - 1).bit_length()
+
+def action_write(name, args):
+    "write a headermap file from a JSON definition"
+
+    parser = optparse.OptionParser("%%prog %s [options] <input path> <output path>" % (
+            name,))
+    (opts, args) = parser.parse_args(args)
+
+    if len(args) != 2:
+        parser.error("invalid number of arguments")
+
+    input_path,output_path = args
+
+    with open(input_path, "r") as f:
+        input_data = json.load(f)
+
+    # Compute the headermap contents, we make a table that is 1/3 full.
+    mappings = input_data['mappings']
+    num_buckets = next_power_of_two(len(mappings) * 3)
+
+    table = [(0, 0, 0)
+             for i in range(num_buckets)]
+    max_value_len = 0
+    strtable = "\0"
+    for key,value in mappings.items():
+        if not isinstance(key, str):
+            key = key.decode('utf-8')
+        if not isinstance(value, str):
+            value = value.decode('utf-8')
+        max_value_len = max(max_value_len, len(value))
+
+        key_idx = len(strtable)
+        strtable += key + '\0'
+        prefix = os.path.dirname(value) + '/'
+        suffix = os.path.basename(value)
+        prefix_idx = len(strtable)
+        strtable += prefix + '\0'
+        suffix_idx = len(strtable)
+        strtable += suffix + '\0'
+
+        hash = hmap_hash(key)
+        for i in range(num_buckets):
+            idx = (hash + i) % num_buckets
+            if table[idx][0] == 0:
+                table[idx] = (key_idx, prefix_idx, suffix_idx)
+                break
+        else:
+            raise RuntimeError
+
+    endian_code = '<'
+    magic = k_header_magic_LE
+    magic_size = 4
+    header_fmt = endian_code + 'HHIIII'
+    header_size = struct.calcsize(header_fmt)
+    bucket_fmt = endian_code + 'III'
+    bucket_size = struct.calcsize(bucket_fmt)
+    strtable_offset = magic_size + header_size + num_buckets * bucket_size
+    header = (1, 0, strtable_offset, len(mappings),
+              num_buckets, max_value_len)
+
+    # Write out the headermap.
+    with open(output_path, 'wb') as f:
+        f.write(magic)
+        f.write(struct.pack(header_fmt, *header))
+        for bucket in table:
+            f.write(struct.pack(bucket_fmt, *bucket))
+        f.write(strtable.encode())
+
+def action_tovfs(name, args):
+    "convert a headermap to a VFS layout"
+
+    parser = optparse.OptionParser("%%prog %s [options] <headermap path>" % (
+            name,))
+    parser.add_option("", "--build-path", dest="build_path",
+                      help="build path prefix",
+                      action="store", type=str)
+    (opts, args) = parser.parse_args(args)
+
+    if len(args) != 2:
+        parser.error("invalid number of arguments")
+    if opts.build_path is None:
+        parser.error("--build-path is required")
+
+    input_path,output_path = args
+
+    hmap = HeaderMap.frompath(input_path)
+
+    # Create the table for all the objects.
+    vfs = {}
+    vfs['version'] = 0
+    build_dir_contents = []
+    vfs['roots'] = [{
+            'name' : opts.build_path,
+            'type' : 'directory',
+            'contents' : build_dir_contents }]
+
+    # We assume we are mapping framework paths, so a key of "Foo/Bar.h" maps to
+    # "<build path>/Foo.framework/Headers/Bar.h".
+    for key,value in hmap.mappings:
+        # If this isn't a framework style mapping, ignore it.
+        components = key.split('/')
+        if len(components) != 2:
+            continue
+        framework_name,header_name = components
+        build_dir_contents.append({
+                'name' : '%s.framework/Headers/%s' % (framework_name,
+                                                      header_name),
+                'type' : 'file',
+                'external-contents' : value })
+
+    with open(output_path, 'w') as f:
+        json.dump(vfs, f, indent=2)
+
+commands = dict((name[7:].replace("_","-"), f)
+                for name,f in locals().items()
+                if name.startswith('action_'))
+
+def usage():
+    print ("Usage: %s command [options]" % (
+        os.path.basename(sys.argv[0])), file=sys.stderr)
+    print (file=sys.stderr)
+    print ("Available commands:", file=sys.stderr)
+    cmds_width = max(map(len, commands))
+    for name,func in sorted(commands.items()):
+        print ("  %-*s - %s" % (cmds_width, name, func.__doc__), file=sys.stderr)
+    sys.exit(1)
+
+def main():
+    if len(sys.argv) < 2 or sys.argv[1] not in commands:
+        usage()
+
+    cmd = sys.argv[1]
+    commands[cmd](cmd, sys.argv[2:])
+
+if __name__ == '__main__':
+    main()

llvm/bin/intercept-build

@@ -0,0 +1,17 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+# Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+# See https://llvm.org/LICENSE.txt for license information.
+# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+
+import multiprocessing
+import sys
+import os.path
+this_dir = os.path.dirname(os.path.realpath(__file__))
+sys.path.append(os.path.join(os.path.dirname(this_dir), 'lib'))
+
+from libscanbuild.intercept import intercept_build
+
+if __name__ == '__main__':
+    multiprocessing.freeze_support()
+    sys.exit(intercept_build())