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456 lines
13 KiB
456 lines
13 KiB
"""This file contains BUILD extensions for generating source code from LLVM's table definition files using the TableGen tool.
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See http://llvm.org/cmds/tblgen.html for more information on the TableGen
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tool.
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TODO(chandlerc): Currently this expresses include-based dependencies as
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"sources", and has no transitive understanding due to these files not being
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correctly understood by the build system.
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"""
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def _dict_add(*dictionaries):
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"""Returns a new `dict` that has all the entries of the given dictionaries.
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If the same key is present in more than one of the input dictionaries, the
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last of them in the argument list overrides any earlier ones.
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This function is designed to take zero or one arguments as well as multiple
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dictionaries, so that it follows arithmetic identities and callers can avoid
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special cases for their inputs: the sum of zero dictionaries is the empty
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dictionary, and the sum of a single dictionary is a copy of itself.
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Re-implemented here to avoid adding a dependency on skylib.
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Args:
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*dictionaries: Zero or more dictionaries to be added.
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Returns:
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A new `dict` that has all the entries of the given dictionaries.
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"""
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result = {}
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for d in dictionaries:
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result.update(d)
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return result
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def gentbl(name, tblgen, td_file, td_srcs, tbl_outs, library = True, **kwargs):
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"""gentbl() generates tabular code from a table definition file.
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Args:
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name: The name of the build rule for use in dependencies.
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tblgen: The binary used to produce the output.
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td_file: The primary table definitions file.
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td_srcs: A list of table definition files included transitively.
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tbl_outs: A list of tuples (opts, out), where each opts is a string of
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options passed to tblgen, and the out is the corresponding output file
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produced.
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library: Whether to bundle the generated files into a library.
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**kwargs: Keyword arguments to pass to subsidiary cc_library() rule.
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"""
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if td_file not in td_srcs:
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td_srcs += [td_file]
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includes = []
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for (opts, out) in tbl_outs:
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outdir = out[:out.rindex("/")]
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if outdir not in includes:
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includes.append(outdir)
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rule_suffix = "_".join(opts.replace("-", "_").replace("=", "_").split(" "))
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native.genrule(
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name = "%s_%s_genrule" % (name, rule_suffix),
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srcs = td_srcs,
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outs = [out],
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tools = [tblgen],
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message = "Generating code from table: %s" % td_file,
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cmd = (("$(location %s) " + "-I external/llvm-project/llvm/include " +
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"-I external/llvm-project/clang/include " +
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"-I $$(dirname $(location %s)) " + ("%s $(location %s) --long-string-literals=0 " +
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"-o $@")) % (
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tblgen,
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td_file,
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opts,
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td_file,
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)),
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)
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# For now, all generated files can be assumed to comprise public interfaces.
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# If this is not true, you should specify library = False
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# and list the generated '.inc' files in "srcs".
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if library:
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native.cc_library(
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name = name,
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textual_hdrs = [f for (_, f) in tbl_outs],
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includes = includes,
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**kwargs
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)
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def llvm_target_cmake_vars(native_arch, target_triple):
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return {
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"LLVM_HOST_TRIPLE": target_triple,
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"LLVM_DEFAULT_TARGET_TRIPLE": target_triple,
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"LLVM_NATIVE_ARCH": native_arch,
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}
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def _quote(s):
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"""Quotes the given string for use in a shell command.
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This function double-quotes the given string (in case it contains spaces or
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other special characters) and escapes any special characters (dollar signs,
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double-quotes, and backslashes) that may be present.
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Args:
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s: The string to quote.
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Returns:
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An escaped and quoted version of the string that can be passed to a shell
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command.
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"""
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return ('"' +
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s.replace("\\", "\\\\").replace("$", "\\$").replace('"', "\\\"") +
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'"')
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def cmake_var_string(cmake_vars):
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"""Converts a dictionary to an input suitable for expand_cmake_vars.
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Ideally we would jist stringify in the expand_cmake_vars() rule, but select()
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interacts badly with genrules.
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TODO(phawkins): replace the genrule() with native rule and delete this rule.
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Args:
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cmake_vars: a dictionary with string keys and values that are convertable to
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strings.
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Returns:
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cmake_vars in a form suitable for passing to expand_cmake_vars.
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"""
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return " ".join([
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_quote("{}={}".format(k, str(v)))
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for (k, v) in cmake_vars.items()
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])
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def expand_cmake_vars(name, src, dst, cmake_vars):
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"""Expands #cmakedefine, #cmakedefine01, and CMake variables in a text file.
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Args:
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name: the name of the rule
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src: the input of the rule
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dst: the output of the rule
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cmake_vars: a string containing the CMake variables, as generated by
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cmake_var_string.
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"""
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expand_cmake_vars_tool = "@org_tensorflow//third_party/llvm:expand_cmake_vars"
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native.genrule(
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name = name,
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srcs = [src],
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tools = [expand_cmake_vars_tool],
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outs = [dst],
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cmd = ("$(location {}) ".format(expand_cmake_vars_tool) + cmake_vars +
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"< $< > $@"),
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)
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# TODO(phawkins): the set of CMake variables was hardcoded for expediency.
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# However, we should really detect many of these via configure-time tests.
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# The set of CMake variables common to all targets.
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cmake_vars = {
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# LLVM features
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"ENABLE_BACKTRACES": 1,
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"LLVM_BINDIR": "/dev/null",
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"LLVM_DISABLE_ABI_BREAKING_CHECKS_ENFORCING": 0,
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"LLVM_ENABLE_ABI_BREAKING_CHECKS": 0,
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"LLVM_ENABLE_THREADS": 1,
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"LLVM_ENABLE_ZLIB": 1,
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"LLVM_HAS_ATOMICS": 1,
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"LLVM_INCLUDEDIR": "/dev/null",
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"LLVM_INFODIR": "/dev/null",
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"LLVM_MANDIR": "/dev/null",
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"LLVM_NATIVE_TARGET": 1,
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"LLVM_NATIVE_TARGETINFO": 1,
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"LLVM_NATIVE_TARGETMC": 1,
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"LLVM_NATIVE_ASMPRINTER": 1,
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"LLVM_NATIVE_ASMPARSER": 1,
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"LLVM_NATIVE_DISASSEMBLER": 1,
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"LLVM_PREFIX": "/dev/null",
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"LLVM_VERSION_MAJOR": 0,
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"LLVM_VERSION_MINOR": 0,
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"LLVM_VERSION_PATCH": 0,
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"PACKAGE_NAME": "llvm",
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"PACKAGE_STRING": "llvm tensorflow-trunk",
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"PACKAGE_VERSION": "tensorflow-trunk",
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"RETSIGTYPE": "void",
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}
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# The set of CMake variables common to POSIX targets.
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posix_cmake_vars = {
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# Headers
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"HAVE_DIRENT_H": 1,
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"HAVE_DLFCN_H": 1,
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"HAVE_ERRNO_H": 1,
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"HAVE_EXECINFO_H": 1,
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"HAVE_FCNTL_H": 1,
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"HAVE_INTTYPES_H": 1,
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"HAVE_PTHREAD_H": 1,
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"HAVE_SIGNAL_H": 1,
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"HAVE_STDINT_H": 1,
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"HAVE_SYSEXITS_H": 1,
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"HAVE_SYS_IOCTL_H": 1,
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"HAVE_SYS_MMAN_H": 1,
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"HAVE_SYS_PARAM_H": 1,
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"HAVE_SYS_RESOURCE_H": 1,
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"HAVE_SYS_STAT_H": 1,
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"HAVE_SYS_TIME_H": 1,
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"HAVE_SYS_TYPES_H": 1,
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"HAVE_TERMIOS_H": 1,
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"HAVE_UNISTD_H": 1,
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"HAVE_ZLIB_H": 1,
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# Features
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"HAVE_BACKTRACE": 1,
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"BACKTRACE_HEADER": "execinfo.h",
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"HAVE_DLOPEN": 1,
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"HAVE_FUTIMES": 1,
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"HAVE_GETCWD": 1,
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"HAVE_GETPAGESIZE": 1,
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"HAVE_GETRLIMIT": 1,
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"HAVE_GETRUSAGE": 1,
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"HAVE_GETTIMEOFDAY": 1,
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"HAVE_INT64_T": 1,
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"HAVE_ISATTY": 1,
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"HAVE_LIBEDIT": 1,
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"HAVE_LIBPTHREAD": 1,
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"HAVE_LIBZ": 1,
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"HAVE_MKDTEMP": 1,
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"HAVE_MKSTEMP": 1,
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"HAVE_MKTEMP": 1,
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"HAVE_PREAD": 1,
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"HAVE_PTHREAD_GETSPECIFIC": 1,
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"HAVE_PTHREAD_MUTEX_LOCK": 1,
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"HAVE_PTHREAD_RWLOCK_INIT": 1,
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"HAVE_REALPATH": 1,
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"HAVE_SBRK": 1,
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"HAVE_SETENV": 1,
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"HAVE_SETRLIMIT": 1,
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"HAVE_SIGALTSTACK": 1,
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"HAVE_STRERROR": 1,
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"HAVE_STRERROR_R": 1,
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"HAVE_STRTOLL": 1,
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"HAVE_SYSCONF": 1,
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"HAVE_UINT64_T": 1,
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"HAVE__UNWIND_BACKTRACE": 1,
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# LLVM features
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"LLVM_ON_UNIX": 1,
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"LTDL_SHLIB_EXT": ".so",
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}
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# CMake variables specific to the Linux platform
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linux_cmake_vars = {
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"HAVE_MALLOC_H": 1,
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"HAVE_LINK_H": 1,
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"HAVE_MALLINFO": 1,
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"HAVE_FUTIMENS": 1,
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}
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# CMake variables specific to the FreeBSD platform
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freebsd_cmake_vars = {
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"HAVE_MALLOC_H": 1,
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"HAVE_LINK_H": 1,
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}
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# CMake variables specific to the Darwin (Mac OS X) platform.
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darwin_cmake_vars = {
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"HAVE_MALLOC_MALLOC_H": 1,
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"HAVE_MALLOC_ZONE_STATISTICS": 1,
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}
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# CMake variables specific to the Windows platform.
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win32_cmake_vars = {
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# Headers
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"HAVE_ERRNO_H": 1,
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"HAVE_EXECINFO_H": 1,
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"HAVE_FCNTL_H": 1,
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"HAVE_FENV_H": 1,
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"HAVE_INTTYPES_H": 1,
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"HAVE_MALLOC_H": 1,
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"HAVE_SIGNAL_H": 1,
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"HAVE_STDINT_H": 1,
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"HAVE_SYS_STAT_H": 1,
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"HAVE_SYS_TYPES_H": 1,
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"HAVE_ZLIB_H": 1,
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# Features
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"BACKTRACE_HEADER": "execinfo.h",
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"HAVE_GETCWD": 1,
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"HAVE_INT64_T": 1,
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"HAVE_STRERROR": 1,
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"HAVE_STRTOLL": 1,
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"HAVE_SYSCONF": 1,
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"HAVE_UINT64_T": 1,
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"HAVE__CHSIZE_S": 1,
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"HAVE___CHKSTK": 1,
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# MSVC specific
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"stricmp": "_stricmp",
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"strdup": "_strdup",
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# LLVM features
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"LTDL_SHLIB_EXT": ".dll",
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}
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# Select a set of CMake variables based on the platform.
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# TODO(phawkins): use a better method to select the right host triple, rather
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# than hardcoding x86_64.
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llvm_all_cmake_vars = select({
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"@org_tensorflow//tensorflow:macos_x86_64": cmake_var_string(
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_dict_add(
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cmake_vars,
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llvm_target_cmake_vars("X86", "x86_64-apple-darwin"),
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posix_cmake_vars,
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darwin_cmake_vars,
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),
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),
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"@org_tensorflow//tensorflow:macos_arm64": cmake_var_string(
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_dict_add(
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cmake_vars,
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llvm_target_cmake_vars("AArch64", "arm64-apple-darwin"),
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posix_cmake_vars,
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darwin_cmake_vars,
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),
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),
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"@org_tensorflow//tensorflow:linux_aarch64": cmake_var_string(
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_dict_add(
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cmake_vars,
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llvm_target_cmake_vars("AArch64", "aarch64-unknown-linux_gnu"),
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posix_cmake_vars,
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linux_cmake_vars,
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),
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),
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"@org_tensorflow//tensorflow:linux_ppc64le": cmake_var_string(
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_dict_add(
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cmake_vars,
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llvm_target_cmake_vars("PowerPC", "powerpc64le-unknown-linux_gnu"),
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posix_cmake_vars,
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linux_cmake_vars,
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),
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),
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"@org_tensorflow//tensorflow:windows": cmake_var_string(
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_dict_add(
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cmake_vars,
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llvm_target_cmake_vars("X86", "x86_64-pc-win32"),
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win32_cmake_vars,
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),
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),
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"@org_tensorflow//tensorflow:freebsd": cmake_var_string(
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_dict_add(
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cmake_vars,
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llvm_target_cmake_vars("X86", "x86_64-unknown-freebsd"),
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posix_cmake_vars,
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),
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),
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"@org_tensorflow//tensorflow:linux_s390x": cmake_var_string(
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_dict_add(
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cmake_vars,
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llvm_target_cmake_vars("SystemZ", "systemz-unknown-linux_gnu"),
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posix_cmake_vars,
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linux_cmake_vars,
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),
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),
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"//conditions:default": cmake_var_string(
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_dict_add(
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cmake_vars,
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llvm_target_cmake_vars("X86", "x86_64-unknown-linux_gnu"),
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posix_cmake_vars,
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linux_cmake_vars,
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),
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),
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})
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llvm_linkopts = select({
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"@org_tensorflow//tensorflow:windows": [],
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"@org_tensorflow//tensorflow:freebsd": ["-ldl", "-lm", "-lpthread", "-lexecinfo"],
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"//conditions:default": ["-ldl", "-lm", "-lpthread"],
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})
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llvm_defines = select({
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"@org_tensorflow//tensorflow:windows": [
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"_CRT_SECURE_NO_DEPRECATE",
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"_CRT_SECURE_NO_WARNINGS",
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"_CRT_NONSTDC_NO_DEPRECATE",
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"_CRT_NONSTDC_NO_WARNINGS",
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"_SCL_SECURE_NO_DEPRECATE",
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"_SCL_SECURE_NO_WARNINGS",
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"UNICODE",
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"_UNICODE",
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],
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"//conditions:default": [],
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}) + [
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"LLVM_ENABLE_STATS",
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"__STDC_LIMIT_MACROS",
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"__STDC_CONSTANT_MACROS",
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"__STDC_FORMAT_MACROS",
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"LLVM_BUILD_GLOBAL_ISEL",
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]
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llvm_copts = select({
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"@org_tensorflow//tensorflow:windows": [
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"-Zc:inline",
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"-Zc:strictStrings",
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"-Zc:rvalueCast",
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"-Oi",
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"-wd4141",
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"-wd4146",
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"-wd4180",
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"-wd4244",
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"-wd4258",
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"-wd4267",
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"-wd4291",
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"-wd4345",
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"-wd4351",
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"-wd4355",
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"-wd4456",
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"-wd4457",
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"-wd4458",
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"-wd4459",
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"-wd4503",
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"-wd4624",
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"-wd4722",
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"-wd4800",
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"-wd4100",
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"-wd4127",
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"-wd4512",
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"-wd4505",
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"-wd4610",
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"-wd4510",
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"-wd4702",
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"-wd4245",
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"-wd4706",
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"-wd4310",
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"-wd4701",
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"-wd4703",
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"-wd4389",
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"-wd4611",
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"-wd4805",
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"-wd4204",
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"-wd4577",
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"-wd4091",
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"-wd4592",
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"-wd4319",
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"-wd4324",
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"-w14062",
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"-we4238",
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],
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"//conditions:default": [],
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})
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# Platform specific sources for libSupport.
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def llvm_support_platform_specific_srcs_glob():
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return select({
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"@org_tensorflow//tensorflow:windows": native.glob([
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"lib/Support/Windows/*.inc",
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"lib/Support/Windows/*.h",
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]),
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"//conditions:default": native.glob([
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"lib/Support/Unix/*.inc",
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"lib/Support/Unix/*.h",
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]),
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})
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