Unity-Technologies
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emscripten
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emscripten/tools/shared.py

680 строки
27 KiB
Python
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import shutil, time, os, sys, json, tempfile
from subprocess import Popen, PIPE, STDOUT
__rootpath__ = os.path.abspath(os.path.dirname(os.path.dirname(__file__)))
def path_from_root(*pathelems):
return os.path.join(__rootpath__, *pathelems)
# Config file
CONFIG_FILE = os.path.expanduser('~/.emscripten')
if not os.path.exists(CONFIG_FILE):
shutil.copy(path_from_root('settings.py'), CONFIG_FILE)
print >> sys.stderr, '''
==============================================================================
Welcome to Emscripten!
This is the first time any of the Emscripten tools has been run.
A settings file has been copied to ~/.emscripten, at absolute path: %s
Please edit that file and change the paths to fit your system. Specifically,
make sure LLVM_ROOT and NODE_JS are correct.
This command will now exit. When you are done editing those paths, re-run it.
==============================================================================
''' % CONFIG_FILE
sys.exit(0)
try:
exec(open(CONFIG_FILE, 'r').read())
except Exception, e:
print >> sys.stderr, 'Error in evaluating ~/.emscripten (at %s): %s' % (CONFIG_FILE, str(e))
sys.exit(1)
# Check that basic stuff we need (a JS engine to compile, Node.js, and Clang and LLVM)
# exists.
# The test runner always does this check (through |force|). emcc does this less frequently,
# only when ~/.emscripten_sanity does not exist or is older than ~/.emscripten (so,
# we re-check sanity when the settings are changed)
def check_sanity(force=False):
try:
if not force:
settings_mtime = os.stat(CONFIG_FILE).st_mtime
sanity_file = CONFIG_FILE + '_sanity'
try:
sanity_mtime = os.stat(sanity_file).st_mtime
if sanity_mtime > settings_mtime:
return # sanity has been checked
except:
pass
print >> sys.stderr, '(Emscripten: Running sanity checks)'
if not check_engine(COMPILER_ENGINE):
print >> sys.stderr, 'FATAL: The JavaScript shell used for compiling (%s) does not seem to work, check the paths in ~/.emscripten' % COMPILER_ENGINE
sys.exit(0)
if NODE_JS != COMPILER_ENGINE:
if not check_engine(NODE_JS):
print >> sys.stderr, 'FATAL: Node.js (%s) does not seem to work, check the paths in ~/.emscripten' % NODE_JS
sys.exit(0)
for cmd in [CLANG, LLVM_DIS]:
if not os.path.exists(cmd) and not os.path.exists(cmd + '.exe'): # .exe extension required for Windows
print >> sys.stderr, 'FATAL: Cannot find %s, check the paths in ~/.emscripten' % cmd
sys.exit(0)
if not os.path.exists(CLOSURE_COMPILER):
print >> sys.stderr, 'WARNING: Closure compiler (%s) does not exist, check the paths in ~/.emscripten. -O2 and above will fail' % CLOSURE_COMPILER
# Sanity check passed!
if not force:
# Only create/update this file if the sanity check succeeded, i.e., we got here
f = open(sanity_file, 'w')
f.write('certified\n')
f.close()
except Exception, e:
# Any error here is not worth failing on
print 'WARNING: sanity check failed to run', e
# Tools/paths
CLANG_CC=os.path.expanduser(os.path.join(LLVM_ROOT, 'clang'))
CLANG_CPP=os.path.expanduser(os.path.join(LLVM_ROOT, 'clang++'))
CLANG=CLANG_CPP
LLVM_LINK=os.path.join(LLVM_ROOT, 'llvm-link')
LLVM_LD=os.path.join(LLVM_ROOT, 'llvm-ld')
LLVM_OPT=os.path.expanduser(os.path.join(LLVM_ROOT, 'opt'))
LLVM_AS=os.path.expanduser(os.path.join(LLVM_ROOT, 'llvm-as'))
LLVM_DIS=os.path.expanduser(os.path.join(LLVM_ROOT, 'llvm-dis'))
LLVM_NM=os.path.expanduser(os.path.join(LLVM_ROOT, 'llvm-nm'))
LLVM_DIS_OPTS = ['-show-annotations'] # For LLVM 2.8+. For 2.7, you may need to do just []
LLVM_INTERPRETER=os.path.expanduser(os.path.join(LLVM_ROOT, 'lli'))
LLVM_COMPILER=os.path.expanduser(os.path.join(LLVM_ROOT, 'llc'))
COFFEESCRIPT = path_from_root('tools', 'eliminator', 'node_modules', 'coffee-script', 'bin', 'coffee')
EMSCRIPTEN = path_from_root('emscripten.py')
DEMANGLER = path_from_root('third_party', 'demangler.py')
NAMESPACER = path_from_root('tools', 'namespacer.py')
EMCC = path_from_root('emcc')
EMXX = path_from_root('em++')
EMAR = path_from_root('emar')
EMLD = path_from_root('emld')
EMRANLIB = path_from_root('emranlib')
EMLIBTOOL = path_from_root('emlibtool')
EMMAKEN = path_from_root('tools', 'emmaken.py')
AUTODEBUGGER = path_from_root('tools', 'autodebugger.py')
DFE = path_from_root('tools', 'dead_function_eliminator.py')
BINDINGS_GENERATOR = path_from_root('tools', 'bindings_generator.py')
EXEC_LLVM = path_from_root('tools', 'exec_llvm.py')
VARIABLE_ELIMINATOR = path_from_root('tools', 'eliminator', 'eliminator.coffee')
JS_OPTIMIZER = path_from_root('tools', 'js-optimizer.js')
# Temp dir
try:
EMSCRIPTEN_TEMP_DIR = os.path.join(TEMP_DIR, 'emscripten_temp')
if not os.path.exists(EMSCRIPTEN_TEMP_DIR):
try:
os.makedirs(EMSCRIPTEN_TEMP_DIR)
except Exception, e:
print >> sys.stderr, 'Warning: Could not create temp dir (%s): %s' % (EMSCRIPTEN_TEMP_DIR, str(e))
except:
EMSCRIPTEN_TEMP_DIR = tempfile.mkdtemp(prefix='emscripten_temp_')
print >> sys.stderr, 'Warning: TEMP_DIR not defined in ~/.emscripten, using %s' % EMSCRIPTEN_TEMP_DIR
# ~/.emscripten stuff
try:
JS_ENGINES
except:
try:
JS_ENGINES = [JS_ENGINE]
except Exception, e:
print 'ERROR: ~/.emscripten does not seem to have JS_ENGINES or JS_ENGINE set up'
raise
# Additional compiler options
try:
COMPILER_OPTS # Can be set in ~/.emscripten, optionally
except:
COMPILER_OPTS = []
# Force a simple, standard target as much as possible: target 32-bit linux, and disable various flags that hint at other platforms
COMPILER_OPTS = COMPILER_OPTS + ['-m32', '-U__i386__', '-U__x86_64__', '-U__i386', '-U__x86_64', '-U__SSE__', '-U__SSE2__', '-U__MMX__',
'-UX87_DOUBLE_ROUNDING', '-UHAVE_GCC_ASM_FOR_X87', '-DEMSCRIPTEN', '-U__STRICT_ANSI__', '-U__CYGWIN__',
'-D__STDC__', '-Xclang', '-triple=i386-pc-linux-gnu']
USE_EMSDK = not os.environ.get('EMMAKEN_NO_SDK')
if USE_EMSDK:
# Disable system C and C++ include directories, and add our own (using -idirafter so they are last, like system dirs, which
# allows projects to override them)
EMSDK_OPTS = ['-nostdinc', '-nostdinc++', '-Xclang', '-nobuiltininc', '-Xclang', '-nostdinc++', '-Xclang', '-nostdsysteminc',
'-Xclang', '-isystem' + path_from_root('system', 'include'),
'-Xclang', '-isystem' + path_from_root('system', 'include', 'bsd'), # posix stuff
'-Xclang', '-isystem' + path_from_root('system', 'include', 'libc'),
'-Xclang', '-isystem' + path_from_root('system', 'include', 'libcxx'),
'-Xclang', '-isystem' + path_from_root('system', 'include', 'gfx'),
'-Xclang', '-isystem' + path_from_root('system', 'include', 'net'),
'-Xclang', '-isystem' + path_from_root('system', 'include', 'SDL'),
] + [
'-U__APPLE__'
]
COMPILER_OPTS += EMSDK_OPTS
else:
EMSDK_OPTS = []
# Engine tweaks
#if 'strict' not in str(SPIDERMONKEY_ENGINE): # XXX temporarily disable strict mode until we sort out some stuff
# SPIDERMONKEY_ENGINE += ['-e', "options('strict')"] # Strict mode in SpiderMonkey. With V8 we check that fallback to non-strict works too
if 'gcparam' not in str(SPIDERMONKEY_ENGINE):
SPIDERMONKEY_ENGINE += ['-e', "gcparam('maxBytes', 1024*1024*1024);"] # Our very large files need lots of gc heap
# Temp file utilities
def try_delete(filename):
try:
os.unlink(filename)
except:
pass
class TempFiles:
def __init__(self):
self.to_clean = []
def note(self, filename):
self.to_clean.append(filename)
def get(self, suffix):
"""Returns a named temp file with the given prefix."""
named_file = tempfile.NamedTemporaryFile(dir=TEMP_DIR, suffix=suffix, delete=False)
self.note(named_file.name)
return named_file
def clean(self):
for filename in self.to_clean:
try_delete(filename)
self.to_clean = []
def run_and_clean(self, func):
try:
func()
finally:
self.clean()
# Utilities
def check_engine(engine):
# TODO: we call this several times, perhaps cache the results?
try:
return 'hello, world!' in run_js(path_from_root('tests', 'hello_world.js'), engine)
except Exception, e:
print 'Checking JS engine %s failed. Check ~/.emscripten. Details: %s' % (str(engine), str(e))
return False
def timeout_run(proc, timeout, note):
start = time.time()
if timeout is not None:
while time.time() - start < timeout and proc.poll() is None:
time.sleep(0.1)
if proc.poll() is None:
proc.kill() # XXX bug: killing emscripten.py does not kill it's child process!
raise Exception("Timed out: " + note)
return proc.communicate()[0]
def run_js(filename, engine=None, args=[], check_timeout=False, stdout=PIPE, stderr=None, cwd=None):
if engine is None: engine = JS_ENGINES[0]
if type(engine) is not list: engine = [engine]
return timeout_run(Popen(engine + [filename] + (['--'] if 'd8' in engine[0] else []) + args,
stdout=stdout, stderr=stderr, cwd=cwd), 15*60 if check_timeout else None, 'Execution')
def to_cc(cxx):
# By default, LLVM_GCC and CLANG are really the C++ versions. This gets an explicit C version
return cxx.replace('clang++', 'clang').replace('g++', 'gcc')
def line_splitter(data):
"""Silly little tool to split JSON arrays over many lines."""
out = ''
counter = 0
for i in range(len(data)):
out += data[i]
if data[i] == ' ' and counter > 60:
out += '\n'
counter = 0
else:
counter += 1
return out
def limit_size(string, MAX=80*20):
if len(string) < MAX: return string
return string[0:MAX/2] + '\n[..]\n' + string[-MAX/2:]
def read_pgo_data(filename):
'''
Reads the output of PGO and generates proper information for CORRECT_* == 2 's *_LINES options
'''
signs_lines = []
overflows_lines = []
for line in open(filename, 'r'):
try:
if line.rstrip() == '': continue
if '%0 failures' in line: continue
left, right = line.split(' : ')
signature = left.split('|')[1]
if 'Sign' in left:
signs_lines.append(signature)
elif 'Overflow' in left:
overflows_lines.append(signature)
except:
pass
return {
'signs_lines': signs_lines,
'overflows_lines': overflows_lines
}
# Settings. A global singleton. Not pretty, but nicer than passing |, settings| everywhere
class Settings:
@classmethod
def reset(self):
class Settings2:
QUANTUM_SIZE = 4
reset = Settings.reset
# Given some emcc-type args (-O3, -s X=Y, etc.), fill Settings with the right settings
@classmethod
def load(self, args=[]):
# Load the JS defaults into python
settings = open(path_from_root('src', 'settings.js')).read().replace('var ', 'Settings.').replace('//', '#')
exec settings in globals()
# Apply additional settings. First -O, then -s
for i in range(len(args)):
if args[i].startswith('-O'):
level = eval(args[i][2])
Settings.apply_opt_level(level)
for i in range(len(args)):
if args[i] == '-s':
exec 'Settings.' + args[i+1] in globals() # execute the setting
# Transforms the Settings information into emcc-compatible args (-s X=Y, etc.). Basically
# the reverse of load_settings, except for -Ox which is relevant there but not here
@classmethod
def serialize(self):
ret = []
for key, value in Settings.__dict__.iteritems():
if key == key.upper(): # this is a hack. all of our settings are ALL_CAPS, python internals are not
ret += ['-s', key + '=' + json.dumps(value)]
return ret
@classmethod
def apply_opt_level(self, opt_level, noisy=False):
if opt_level >= 1:
Settings.ASSERTIONS = 0
Settings.DISABLE_EXCEPTION_CATCHING = 1
if opt_level >= 2:
Settings.RELOOP = 1
if opt_level >= 3:
Settings.CORRECT_SIGNS = 0
Settings.CORRECT_OVERFLOWS = 0
Settings.CORRECT_ROUNDINGS = 0
Settings.I64_MODE = 0
Settings.DOUBLE_MODE = 0
if noisy: print >> sys.stderr, 'Warning: Applying some potentially unsafe optimizations! (Use -O2 if this fails.)'
global Settings
Settings = Settings2
Settings.load() # load defaults
Settings.reset()
# Building
class Building:
COMPILER = CLANG
LLVM_OPTS = False
COMPILER_TEST_OPTS = [] # For use of the test runner
@staticmethod
def get_building_env():
env = os.environ.copy()
env['CC'] = EMCC
env['CXX'] = EMXX
env['AR'] = EMAR
env['RANLIB'] = EMRANLIB
env['LIBTOOL'] = EMLIBTOOL
env['EMMAKEN_COMPILER'] = Building.COMPILER
env['EMSCRIPTEN_TOOLS'] = path_from_root('tools')
env['CFLAGS'] = env['EMMAKEN_CFLAGS'] = ' '.join(Building.COMPILER_TEST_OPTS)
env['HOST_CC'] = CLANG_CC
env['HOST_CXX'] = CLANG_CPP
env['HOST_CFLAGS'] = "-W" #if set to nothing, CFLAGS is used, which we don't want
env['HOST_CXXFLAGS'] = "-W" #if set to nothing, CXXFLAGS is used, which we don't want
return env
@staticmethod
def configure(args, stdout=None, stderr=None, env=None):
if env is None:
env = Building.get_building_env()
env['EMMAKEN_JUST_CONFIGURE'] = '1'
Popen(args, stdout=stdout, stderr=stderr, env=env).communicate()[0]
del env['EMMAKEN_JUST_CONFIGURE']
@staticmethod
def make(args, stdout=None, stderr=None, env=None):
if env is None:
env = Building.get_building_env()
Popen(args, stdout=stdout, stderr=stderr, env=env).communicate()[0]
@staticmethod
def build_library(name, build_dir, output_dir, generated_libs, configure=['./configure'], configure_args=[], make=['make'], make_args=['-j', '2'], cache=None, cache_name=None, copy_project=False, env_init={}):
''' Build a library into a .bc file. We build the .bc file once and cache it for all our tests. (We cache in
memory since the test directory is destroyed and recreated for each test. Note that we cache separately
for different compilers) '''
if type(generated_libs) is not list: generated_libs = [generated_libs]
temp_dir = build_dir
if copy_project:
project_dir = os.path.join(temp_dir, name)
if os.path.exists(project_dir):
shutil.rmtree(project_dir)
shutil.copytree(path_from_root('tests', name), project_dir) # Useful in debugging sometimes to comment this out, and two lines above
else:
project_dir = build_dir
try:
old_dir = os.getcwd()
except:
old_dir = None
os.chdir(project_dir)
generated_libs = map(lambda lib: os.path.join(project_dir, lib), generated_libs)
#for lib in generated_libs:
# try:
# os.unlink(lib) # make sure compilation completed successfully
# except:
# pass
env = Building.get_building_env()
for k, v in env_init.iteritems():
env[k] = v
if configure: # Useful in debugging sometimes to comment this out (and the lines below up to and including the |link| call)
Building.configure(configure + configure_args, stdout=open(os.path.join(output_dir, 'configure_'), 'w'),
stderr=open(os.path.join(output_dir, 'configure_err'), 'w'), env=env)
Building.make(make + make_args, stdout=open(os.path.join(output_dir, 'make_'), 'w'),
stderr=open(os.path.join(output_dir, 'make_err'), 'w'), env=env)
bc_file = os.path.join(project_dir, 'bc.bc')
Building.link(generated_libs, bc_file)
if cache is not None:
cache[cache_name] = open(bc_file, 'rb').read()
if old_dir:
os.chdir(old_dir)
return bc_file
@staticmethod
def link(files, target):
output = Popen([LLVM_LINK] + files + ['-o', target], stdout=PIPE).communicate()[0]
assert os.path.exists(target) and (output is None or 'Could not open input file' not in output), 'Linking error: ' + output
# Emscripten optimizations that we run on the .ll file
@staticmethod
def ll_opts(filename):
## Remove target info. This helps LLVM opts, if we run them later
#cleaned = filter(lambda line: not line.startswith('target datalayout = ') and not line.startswith('target triple = '),
# open(filename + '.o.ll', 'r').readlines())
#os.unlink(filename + '.o.ll')
#open(filename + '.o.ll.orig', 'w').write(''.join(cleaned))
shutil.move(filename + '.o.ll', filename + '.o.ll.orig')
output = Popen(['python', DFE, filename + '.o.ll.orig', filename + '.o.ll'], stdout=PIPE).communicate()[0]
assert os.path.exists(filename + '.o.ll'), 'Failed to run ll optimizations'
# Optional LLVM optimizations
@staticmethod
def llvm_opt(filename, level, safe=True):
output = Popen([LLVM_OPT, filename] + Building.pick_llvm_opts(level, safe) + ['-o=' + filename + '.opt.bc'], stdout=PIPE).communicate()[0]
assert os.path.exists(filename + '.opt.bc'), 'Failed to run llvm optimizations: ' + output
shutil.move(filename + '.opt.bc', filename)
@staticmethod
def llvm_opts(filename): # deprecated version, only for test runner. TODO: remove
if Building.LLVM_OPTS:
shutil.move(filename + '.o', filename + '.o.pre')
output = Popen([LLVM_OPT, filename + '.o.pre'] + Building.LLVM_OPT_OPTS + ['-o=' + filename + '.o'], stdout=PIPE).communicate()[0]
assert os.path.exists(filename + '.o'), 'Failed to run llvm optimizations: ' + output
#if Building.LLVM_OPTS == 2:
# print 'Unsafe LD!'
# shutil.move(filename + '.o', filename + '.o.pre')
# output = Popen([LLVM_LD, filename + '.o.pre', '-o=' + filename + '.tmp'], stdout=PIPE).communicate()[0]
# assert os.path.exists(filename + '.tmp.bc'), 'Failed to run llvm optimizations: ' + output
# shutil.move(filename + '.tmp.bc', filename + '.o')
@staticmethod
def llvm_dis(input_filename, output_filename=None):
# LLVM binary ==> LLVM assembly
if output_filename is None:
# use test runner conventions
output_filename = input_filename + '.o.ll'
input_filename = input_filename + '.o'
try_delete(output_filename)
output = Popen([LLVM_DIS, input_filename ] + LLVM_DIS_OPTS + ['-o=' + output_filename], stdout=PIPE).communicate()[0]
assert os.path.exists(output_filename), 'Could not create .ll file: ' + output
return output_filename
@staticmethod
def llvm_as(input_filename, output_filename=None):
# LLVM assembly ==> LLVM binary
if output_filename is None:
# use test runner conventions
output_filename = input_filename + '.o'
input_filename = input_filename + '.o.ll'
try_delete(output_filename)
output = Popen([LLVM_AS, input_filename, '-o=' + output_filename], stdout=PIPE).communicate()[0]
assert os.path.exists(output_filename), 'Could not create bc file: ' + output
return output_filename
@staticmethod
def llvm_nm(filename, stdout=PIPE, stderr=None):
# LLVM binary ==> list of symbols
output = Popen([LLVM_NM, filename], stdout=stdout, stderr=stderr).communicate()[0]
class ret:
defs = []
undefs = []
for line in output.split('\n'):
if len(line) == 0: continue
status, symbol = filter(lambda seg: len(seg) > 0, line.split(' '))
if status == 'U':
ret.undefs.append(symbol)
else:
ret.defs.append(symbol)
return ret
@staticmethod
def emcc(filename, args=[], output_filename=None, stdout=None, stderr=None, env=None):
if output_filename is None:
output_filename = filename + '.o'
try_delete(output_filename)
Popen([EMCC, filename] + args + ['-o', output_filename], stdout=stdout, stderr=stderr, env=env).communicate()
assert os.path.exists(output_filename), 'emcc could not create output file'
@staticmethod
def emscripten(filename, append_ext=True, extra_args=[]):
# Run Emscripten
settings = Settings.serialize()
compiler_output = timeout_run(Popen(['python', EMSCRIPTEN, filename + ('.o.ll' if append_ext else ''), '-o', filename + '.o.js'] + settings + extra_args, stdout=PIPE), None, 'Compiling')
#print compiler_output
# Detect compilation crashes and errors
if compiler_output is not None and 'Traceback' in compiler_output and 'in test_' in compiler_output: print compiler_output; assert 0
assert os.path.exists(filename + '.o.js') and len(open(filename + '.o.js', 'r').read()) > 0, 'Emscripten failed to generate .js: ' + str(compiler_output)
return filename + '.o.js'
@staticmethod
def pick_llvm_opts(optimization_level, safe=True):
'''
It may be safe to use nonportable optimizations (like -OX) if we remove the platform info from the .ll
(which we do in do_ll_opts) - but even there we have issues (even in TA2) with instruction combining
into i64s. In any case, the handpicked ones here should be safe and portable. They are also tuned for
things that look useful.
'''
opts = []
if optimization_level > 0:
#opts.append('-disable-inlining') # we prefer to let closure compiler do our inlining
if not safe:
#opts.append('-O%d' % optimization_level)
opts.append('-std-compile-opts')
opts.append('-std-link-opts')
print 'Unsafe:', opts,
else:
allow_nonportable = not safe
optimize_size = True
use_aa = not safe
# PassManagerBuilder::populateModulePassManager
if allow_nonportable and use_aa: # ammo.js results indicate this can be nonportable
opts.append('-tbaa')
opts.append('-basicaa') # makes fannkuch slow but primes fast
opts.append('-globalopt')
opts.append('-ipsccp')
opts.append('-deadargelim')
if allow_nonportable: opts.append('-instcombine')
opts.append('-simplifycfg')
opts.append('-prune-eh')
if not optimize_size: opts.append('-inline') # The condition here is a difference with LLVM's createStandardAliasAnalysisPasses
opts.append('-functionattrs')
if optimization_level > 2:
opts.append('-argpromotion')
# XXX Danger: Can turn a memcpy into something that violates the
# load-store consistency hypothesis. See hashnum() in Lua.
# Note: this opt is of great importance for raytrace...
if allow_nonportable: opts.append('-scalarrepl')
if allow_nonportable: opts.append('-early-cse') # ?
opts.append('-simplify-libcalls')
opts.append('-jump-threading')
if allow_nonportable: opts.append('-correlated-propagation') # ?
opts.append('-simplifycfg')
if allow_nonportable: opts.append('-instcombine')
opts.append('-tailcallelim')
opts.append('-simplifycfg')
opts.append('-reassociate')
opts.append('-loop-rotate')
opts.append('-licm')
opts.append('-loop-unswitch') # XXX should depend on optimize_size
if allow_nonportable: opts.append('-instcombine')
if Settings.QUANTUM_SIZE == 4: opts.append('-indvars') # XXX this infinite-loops raytrace on q1 (loop in |new node_t[count]| has 68 hardcoded &not fixed)
if allow_nonportable: opts.append('-loop-idiom') # ?
opts.append('-loop-deletion')
opts.append('-loop-unroll')
##### not in llvm-3.0. but have | #addExtensionsToPM(EP_LoopOptimizerEnd, MPM);| if allow_nonportable: opts.append('-instcombine')
# XXX Danger: Messes up Lua output for unknown reasons
# Note: this opt is of minor importance for raytrace...
if optimization_level > 1 and allow_nonportable: opts.append('-gvn')
opts.append('-memcpyopt') # Danger?
opts.append('-sccp')
if allow_nonportable: opts.append('-instcombine')
opts.append('-jump-threading')
opts.append('-correlated-propagation')
opts.append('-dse')
#addExtensionsToPM(EP_ScalarOptimizerLate, MPM);
opts.append('-adce')
opts.append('-simplifycfg')
if allow_nonportable: opts.append('-instcombine')
opts.append('-strip-dead-prototypes')
if optimization_level > 2: opts.append('-globaldce')
if optimization_level > 1: opts.append('-constmerge')
Building.LLVM_OPT_OPTS = opts
return opts
@staticmethod
def js_optimizer(filename, passes):
if not check_engine(NODE_JS):
raise Exception('Node.js appears to be missing or broken, looked at: ' + str(NODE_JS))
if type(passes) == str:
passes = [passes]
input = open(filename, 'r').read()
output, err = Popen([NODE_JS, JS_OPTIMIZER] + passes, stdin=PIPE, stdout=PIPE, stderr=PIPE).communicate(input)
assert len(output) > 0 and not output.startswith('Assertion failed'), 'Error in js optimizer: ' + err + '\n\n' + output
filename += '.jo.js'
f = open(filename, 'w')
f.write(output)
f.close()
return filename
@staticmethod
def eliminator(filename):
if not check_engine(NODE_JS):
raise Exception('Node.js appears to be missing or broken, looked at: ' + str(NODE_JS))
coffee = path_from_root('tools', 'eliminator', 'node_modules', 'coffee-script', 'bin', 'coffee')
eliminator = path_from_root('tools', 'eliminator', 'eliminator.coffee')
input = open(filename, 'r').read()
output, err = Popen([coffee, eliminator], stdin=PIPE, stdout=PIPE, stderr=PIPE).communicate(input)
assert len(output) > 0, 'Error in eliminator: ' + err + '\n\n' + output
filename += '.el.js'
f = open(filename, 'w')
f.write(output)
f.close()
return filename
@staticmethod
def closure_compiler(filename):
if not os.path.exists(CLOSURE_COMPILER):
raise Exception('Closure compiler appears to be missing, looked at: ' + str(CLOSURE_COMPILER))
# Something like this (adjust memory as needed):
# java -Xmx1024m -jar CLOSURE_COMPILER --compilation_level ADVANCED_OPTIMIZATIONS --variable_map_output_file src.cpp.o.js.vars --js src.cpp.o.js --js_output_file src.cpp.o.cc.js
cc_output = Popen(['java', '-jar', CLOSURE_COMPILER,
'--compilation_level', 'ADVANCED_OPTIMIZATIONS',
#'--formatting', 'PRETTY_PRINT',
#'--variable_map_output_file', filename + '.vars',
'--js', filename, '--js_output_file', filename + '.cc.js'], stdout=PIPE, stderr=STDOUT).communicate()[0]
if 'ERROR' in cc_output or not os.path.exists(filename + '.cc.js'):
raise Exception('closure compiler error: ' + cc_output)
return filename + '.cc.js'
@staticmethod
def is_bitcode(filename):
# checks if a file contains LLVM bitcode
# if the file doesn't exist or doesn't have valid symbols, it isn't bitcode
try:
defs = Building.llvm_nm(filename, stderr=PIPE)
assert len(defs.defs + defs.undefs) > 0
except:
return False
# look for magic signature
b = open(filename, 'r').read(4)
if b[0] == 'B' and b[1] == 'C':
return True
# on OS X, there is a 20-byte prefix
elif ord(b[0]) == 222 and ord(b[1]) == 192 and ord(b[2]) == 23 and ord(b[3]) == 11:
b = open(filename, 'r').read(24)
return b[20] == 'B' and b[21] == 'C'
return False
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