blob: d25eecf0352708a327a367d7ac49ec8348c1960a [file] [log] [blame]
#!/usr/bin/env python3
# Copyright 2018 The SwiftShader Authors. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import argparse
import contextlib
import multiprocessing
import os
import platform
import re
import shutil
import subprocess
import sys
import tempfile
from os import path
# LLVM_BRANCH must match the value of the same variable in third_party/update-llvm-10.sh
LLVM_BRANCH = "release/10.x"
# LLVM_COMMIT must be set to the commit hash that we last updated to when running third_party/update-llvm-10.sh.
# Run 'git show -s origin/llvm10-clean' and look for 'llvm-10-update: <hash>' to retrieve it.
LLVM_COMMIT = "d32170dbd5b0d54436537b6b75beaf44324e0c28"
SCRIPT_DIR = path.dirname(path.realpath(sys.argv[0]))
LLVM_STAGING_DIR = path.abspath(path.join(tempfile.gettempdir(), "llvm-10"))
LLVM_DIR = path.abspath(path.join(LLVM_STAGING_DIR, "llvm"))
LLVM_OBJS = path.join(LLVM_STAGING_DIR, "build")
LLVM_CONFIGS = path.abspath(path.join(SCRIPT_DIR, '..', 'configs'))
# List of all arches SwiftShader supports
LLVM_TARGETS = [
('AArch64', ('__aarch64__',)),
('ARM', ('__arm__',)),
('X86', ('__i386__', '__x86_64__')),
('Mips', ('__mips__',)),
('PowerPC', ('__powerpc64__',)),
]
# Per-platform arches
LLVM_TRIPLES = {
'android': [
('__x86_64__', 'x86_64-linux-android'),
('__i386__', 'i686-linux-android'),
('__arm__', 'armv7-linux-androideabi'),
('__aarch64__', 'aarch64-linux-android'),
],
'linux': [
('__x86_64__', 'x86_64-unknown-linux-gnu'),
('__i386__', 'i686-pc-linux-gnu'),
('__arm__', 'armv7-linux-gnueabihf'),
('__aarch64__', 'aarch64-linux-gnu'),
('__mips__', 'mipsel-linux-gnu'),
('__mips64', 'mips64el-linux-gnuabi64'),
('__powerpc64__', 'powerpc64le-unknown-linux-gnu'),
],
'darwin': [
('__x86_64__', 'x86_64-apple-darwin'),
('__aarch64__', 'arm64-apple-darwin'),
],
'windows': [
('__x86_64__', 'x86_64-pc-win32'),
('__i386__', 'i686-pc-win32'),
('__arm__', 'armv7-pc-win32'),
('__aarch64__', 'aarch64-pc-win32'),
('__mips__', 'mipsel-pc-win32'),
('__mips64', 'mips64el-pc-win32'),
],
'fuchsia': [
('__x86_64__', 'x86_64-unknown-fuchsia'),
('__aarch64__', 'aarch64-unknown-fuchsia'),
]
}
# Mapping of target platform to the host it must be built on
LLVM_PLATFORM_TO_HOST_SYSTEM = {
'android': 'Linux',
'darwin': 'Darwin',
'linux': 'Linux',
'windows': 'Windows',
'fuchsia': 'Linux'
}
# LLVM configurations to be undefined.
LLVM_UNDEF_MACROS = [
'BACKTRACE_HEADER',
'ENABLE_BACKTRACES',
'ENABLE_CRASH_OVERRIDES',
'HAVE_BACKTRACE',
'HAVE_POSIX_SPAWN',
'HAVE_PTHREAD_GETNAME_NP',
'HAVE_PTHREAD_SETNAME_NP',
'HAVE_TERMIOS_H',
'HAVE_ZLIB_H',
'HAVE__UNWIND_BACKTRACE',
]
# General CMake options for building LLVM
LLVM_CMAKE_OPTIONS = [
'-DCMAKE_BUILD_TYPE=Release',
'-DLLVM_ENABLE_THREADS=ON',
'-DLLVM_ENABLE_TERMINFO=OFF',
'-DLLVM_ENABLE_LIBXML2=OFF',
'-DLLVM_ENABLE_LIBEDIT=OFF',
'-DLLVM_ENABLE_LIBPFM=OFF',
'-DLLVM_ENABLE_ZLIB=OFF',
'-DLLVM_TEMPORARILY_ALLOW_OLD_TOOLCHAIN=ON'
]
# Used when building LLVM for darwin. Affects values set in the generated config files.
MIN_MACOS_VERSION = '10.10'
@contextlib.contextmanager
def pushd(new_dir):
previous_dir = os.getcwd()
os.chdir(new_dir)
try:
yield
finally:
os.chdir(previous_dir)
def log(message, level=1):
print(' ' * level + '> ' + message)
def run_command(command, log_level=1):
log(command, log_level)
os.system(command)
def run_subprocess(*popenargs, log_level=1, cwd=None):
log([' '.join(t) for t in popenargs][0], log_level)
return subprocess.run(*popenargs, cwd=cwd)
def _parse_args():
parser = argparse.ArgumentParser()
parser.add_argument('name', help='destination name',
choices=['android', 'linux', 'darwin', 'windows', 'fuchsia'])
parser.add_argument('-j', '--jobs', help='parallel compilation', type=int)
return parser.parse_args()
def validate_args(args):
host = platform.system()
if host not in LLVM_PLATFORM_TO_HOST_SYSTEM.values():
raise Exception(f"Host system not supported: '{host}'")
if args.name not in LLVM_PLATFORM_TO_HOST_SYSTEM.keys():
raise Exception(f"Unknown target platform: '{args.name}'")
expected_host = LLVM_PLATFORM_TO_HOST_SYSTEM[args.name]
if LLVM_PLATFORM_TO_HOST_SYSTEM[args.name] != host:
raise Exception(
f"Target platform '{args.name}' must be built on '{expected_host}', not on '{host}'")
def get_cmake_targets_to_build(platform):
"""Returns list of LLVM targets to build for the input platform"""
targets = set()
for arch_def, triplet in LLVM_TRIPLES[platform]:
for arch, defs in LLVM_TARGETS:
if arch_def in defs:
targets.add(arch)
# Maintain the sort order of LLVM_TARGETS as this affects how config
# headers are generated
return [t[0] for t in LLVM_TARGETS if t[0] in targets]
def clone_llvm():
log("Cloning/Updating LLVM", 1)
# Clone or update staging directory
if not path.exists(LLVM_STAGING_DIR):
os.mkdir(LLVM_STAGING_DIR)
with pushd(LLVM_STAGING_DIR):
run_command('git init', 2)
run_command(
'git remote add origin https://github.com/llvm/llvm-project.git', 2)
run_command('git config core.sparsecheckout true', 2)
run_command('echo /llvm > .git/info/sparse-checkout', 2)
with pushd(LLVM_STAGING_DIR):
run_command('echo /llvm > .git/info/sparse-checkout', 2)
run_command('git fetch origin {}'.format(LLVM_BRANCH), 2)
run_command('git checkout {}'.format(LLVM_COMMIT), 2)
return
def build_llvm(name, num_jobs):
"""Build LLVM and get all generated files."""
log("Building LLVM", 1)
if num_jobs is None:
num_jobs = multiprocessing.cpu_count()
"""On Windows we need to have CMake generate build files for the 64-bit
Visual Studio host toolchain."""
host = '-Thost=x64' if name == 'windows' else ''
cmake_options = LLVM_CMAKE_OPTIONS + ['-DLLVM_TARGETS_TO_BUILD=' +
';'.join(t for t in get_cmake_targets_to_build(name))]
if name == 'darwin':
cmake_options.append('-DCMAKE_OSX_DEPLOYMENT_TARGET={}'.format(MIN_MACOS_VERSION))
os.makedirs(LLVM_OBJS, exist_ok=True)
run_subprocess(['cmake', host, LLVM_DIR] +
cmake_options, log_level=2, cwd=LLVM_OBJS)
run_subprocess(['cmake', '--build', '.', '-j',
str(num_jobs)], log_level=2, cwd=LLVM_OBJS)
def list_files(src_base, src, dst_base, suffixes):
"""Enumerate the files that are under `src` and end with one of the
`suffixes` and yield the source path and the destination path."""
src_base = path.abspath(src_base)
src = path.join(src_base, src)
for base_dir, dirnames, filenames in os.walk(src):
for filename in filenames:
if path.splitext(filename)[1] in suffixes:
relative = path.relpath(base_dir, src_base)
yield (path.join(base_dir, filename),
path.join(dst_base, relative, filename))
def copy_common_generated_files(dst_base):
"""Copy platform-independent generated files."""
log("Copying platform-independent generated files", 1)
suffixes = {'.inc', '.h', '.def'}
subdirs = [
path.join('include', 'llvm', 'IR'),
path.join('include', 'llvm', 'Support'),
path.join('lib', 'IR'),
path.join('lib', 'Transforms', 'InstCombine'),
] + [path.join('lib', 'Target', arch) for arch, defs in LLVM_TARGETS]
for subdir in subdirs:
for src, dst in list_files(LLVM_OBJS, subdir, dst_base, suffixes):
log('{} -> {}'.format(src, dst), 2)
os.makedirs(path.dirname(dst), exist_ok=True)
shutil.copyfile(src, dst)
def copy_platform_file(platform, src, dst):
"""Copy platform-dependent generated files and add platform-specific
modifications."""
# LLVM configuration patterns to be post-processed.
llvm_target_pattern = re.compile('^LLVM_[A-Z_]+\\(([A-Za-z0-9_]+)\\)$')
llvm_native_pattern = re.compile(
'^#define LLVM_NATIVE_([A-Z]+) (LLVMInitialize)?(.*)$')
llvm_triple_pattern = re.compile('^#define (LLVM_[A-Z_]+_TRIPLE) "(.*)"$')
llvm_define_pattern = re.compile('^#define ([A-Za-z0-9_]+) (.*)$')
# Build architecture-specific conditions.
conds = {}
for arch, defs in LLVM_TARGETS:
conds[arch] = ' || '.join('defined(' + v + ')' for v in defs)
# Get a set of platform-specific triples.
triples = LLVM_TRIPLES[platform]
with open(src, 'r') as src_file:
os.makedirs(path.dirname(dst), exist_ok=True)
with open(dst, 'w') as dst_file:
for line in src_file:
if line == '#define LLVM_CONFIG_H\n':
print(line, file=dst_file, end='')
print('', file=dst_file)
print('#if !defined(__i386__) && defined(_M_IX86)',
file=dst_file)
print('#define __i386__ 1', file=dst_file)
print('#endif', file=dst_file)
print('', file=dst_file)
print(
'#if !defined(__x86_64__) && (defined(_M_AMD64) || defined (_M_X64))', file=dst_file)
print('#define __x86_64__ 1', file=dst_file)
print('#endif', file=dst_file)
print('', file=dst_file)
match = llvm_target_pattern.match(line)
if match:
arch = match.group(1)
print('#if ' + conds[arch], file=dst_file)
print(line, file=dst_file, end='')
print('#endif', file=dst_file)
continue
match = llvm_native_pattern.match(line)
if match:
name = match.group(1)
init = match.group(2) or ''
arch = match.group(3)
end = ''
if arch.lower().endswith(name.lower()):
end = arch[-len(name):]
directive = '#if '
for arch, defs in LLVM_TARGETS:
print(directive + conds[arch], file=dst_file)
print('#define LLVM_NATIVE_' + name + ' ' +
init + arch + end, file=dst_file)
directive = '#elif '
print('#else', file=dst_file)
print('#error "unknown architecture"', file=dst_file)
print('#endif', file=dst_file)
continue
match = llvm_triple_pattern.match(line)
if match:
name = match.group(1)
directive = '#if'
for defs, triple in triples:
print(directive + ' defined(' + defs + ')',
file=dst_file)
print('#define ' + name + ' "' + triple + '"',
file=dst_file)
directive = '#elif'
print('#else', file=dst_file)
print('#error "unknown architecture"', file=dst_file)
print('#endif', file=dst_file)
continue
match = llvm_define_pattern.match(line)
if match and match.group(1) in LLVM_UNDEF_MACROS:
print('/* #undef ' + match.group(1) + ' */', file=dst_file)
continue
print(line, file=dst_file, end='')
def copy_platform_generated_files(platform, dst_base):
"""Copy platform-specific generated files."""
log("Copying platform-specific generated files", 1)
suffixes = {'.inc', '.h', '.def'}
src_dir = path.join('include', 'llvm', 'Config')
for src, dst in list_files(LLVM_OBJS, src_dir, dst_base, suffixes):
log('{}, {} -> {}'.format(platform, src, dst), 2)
copy_platform_file(platform, src, dst)
def main():
args = _parse_args()
validate_args(args)
clone_llvm()
build_llvm(args.name, args.jobs)
copy_common_generated_files(path.join(LLVM_CONFIGS, 'common'))
copy_platform_generated_files(
args.name, path.join(LLVM_CONFIGS, args.name))
if __name__ == '__main__':
main()