82 lines
3.2 KiB
Python
82 lines
3.2 KiB
Python
"""BUILD extensions for MLIR table generation."""
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def gentbl(name, tblgen, td_file, tbl_outs, td_srcs = [], td_includes = [], strip_include_prefix = None, test = False):
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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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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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td_srcs: A list of table definition files included transitively.
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td_includes: A list of include paths for relative includes.
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strip_include_prefix: attribute to pass through to cc_library.
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test: whether to create a test to invoke the tool too.
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"""
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srcs = []
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srcs += td_srcs
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if td_file not in td_srcs:
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srcs += [td_file]
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td_includes_cmd = ["-I external/llvm-project/mlir/include -I external/org_tensorflow"]
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td_includes_cmd += ["-I $(GENDIR)/external/llvm-project/mlir/include"]
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for td_include in td_includes:
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td_includes_cmd += ["-I%s" % td_include]
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local_inc = "-I $$(dirname $(location %s))" % td_file
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if test:
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# Rule to generate shell script to invoke tblgen. This generates a very
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# bare shell file which the sh_test uses.
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native.genrule(
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name = "%s_genrule_sh" % name,
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srcs = srcs,
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outs = ["%s.gen.sh" % name],
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cmd = ("echo \"\\$$1\" %s \\$${@:2} -o /dev/null > $@" % local_inc),
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executable = 1,
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)
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for (opts, out) in tbl_outs:
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# All arguments to generate the output except output destination.
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base_args = [
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"$(location %s)" % tblgen,
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"%s" % opts,
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"$(location %s)" % td_file,
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"-I$(GENDIR)",
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] + td_includes_cmd
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rule_suffix = "_".join(opts.replace("-", "_").replace("=", "_").split(" "))
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# Rule to generate code using generated shell script.
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native.genrule(
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name = "%s_%s_genrule" % (name, rule_suffix),
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srcs = 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 = (" ".join(base_args) + " %s -o $@" % local_inc),
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)
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# Optionally generate rule to test tblgen invocation.
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# Disable these on windows, because $(location ...) does not seem to
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# work as expected on windows.
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if test:
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native.sh_test(
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name = "%s_%s_genrule_test" % (name, rule_suffix),
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srcs = ["%s.gen.sh" % name],
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args = base_args,
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data = srcs + [tblgen],
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tags = ["no_windows"],
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)
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# List of opts that do not generate cc files.
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skip_opts = ["-gen-op-doc"]
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hdrs = [f for (opts, f) in tbl_outs if opts not in skip_opts]
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native.cc_library(
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name = name,
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# include_prefix does not apply to textual_hdrs.
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hdrs = hdrs if strip_include_prefix else [],
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strip_include_prefix = strip_include_prefix,
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textual_hdrs = hdrs,
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)
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