blob: aef9ad5745efa6462d7eab35ba8b52a849623f72 [file] [log] [blame]
#!/usr/bin/python3
# Copyright (c) 2012 The Native Client Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
import subprocess
from driver_env import env
import driver_tools
import filetype
EXTRA_ENV = {
'ARGS' : '',
'INPUT' : '',
'OUTPUT' : '',
# Binary output may go to stdout (when -o was not specified)
'HAVE_OUTPUT' : '0',
# We disable the LLVM simplify-libcalls pass by default, since we
# statically link in libc, and pnacl-opt is typically used for post-link
# optimizations. Changing one library call to another can lead
# to undefined symbol errors since which definitions from libc are linked
# in is already decided.
'DISABLE_SIMPLIFY_LIBCALLS' : '1',
}
PATTERNS = [
( '--enable-simplify-libcalls', "env.set('DISABLE_SIMPLIFY_LIBCALLS', '0')"),
(('-o','(.*)'), "env.set('OUTPUT', pathtools.normalize($0))\n" +
"env.set('HAVE_OUTPUT', '1')"),
( '(-.*)', "env.append('ARGS', $0)"),
( '(.*)', "env.set('INPUT', $0)"),
]
def main(argv):
env.update(EXTRA_ENV)
driver_tools.ParseArgs(argv, PATTERNS)
driver_tools.CheckPathLength(env.getone('INPUT'))
driver_tools.CheckPathLength(env.getone('OUTPUT'))
driver_tools.Run(
'"${LLVM_OPT}" ${ARGS} ' +
'${DISABLE_SIMPLIFY_LIBCALLS ? -disable-simplify-libcalls} ' +
'-disable-loop-vectorization -disable-slp-vectorization ' +
'-vectorize-loops=false -vectorize-slp=false ' +
'-vectorize-slp-aggressive=false ' +
'${HAVE_OUTPUT ? -o ${OUTPUT}} ' +
'${INPUT}')
# Opt is the only tool that will modify a file in-place. If this happens we
# need to clear the filetype cache so future invocations of the type checking
# routines will re-check the file.
if env.getone('INPUT') == env.getone('OUTPUT'):
filetype.ClearFileTypeCaches()
# only reached in case of no errors
return 0
def get_help(unused_argv):
# Set errexit=False -- Do not exit early to allow testing.
# For some reason most the llvm tools return non-zero with --help,
# while all of the gnu tools return 0 with --help.
# On windows, the exit code is also inconsistent =(
code, stdout, stderr = driver_tools.Run('${LLVM_OPT} -help',
redirect_stdout=subprocess.PIPE,
redirect_stderr=subprocess.STDOUT,
errexit=False)
return stdout