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569ec185f5
Added -p / --no-params flag to skip demangling function parameters similar to how it is supported by GNU c++filt tool. There are cases when users want to demangle a large number of symbols in bulk, for example, at startup, and do not care about function parameters and overloads at that time. Skipping the demangling of parameter types led to a measurable improvement in performance. Our users reported about 15% speed up with GNU c++filt and we expect similar results with llvm-cxxfilt with this patch.
31 lines
1.3 KiB
TableGen
31 lines
1.3 KiB
TableGen
include "llvm/Option/OptParser.td"
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class F<string letter, string help> : Flag<["-"], letter>, HelpText<help>;
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class FF<string name, string help> : Flag<["--"], name>, HelpText<help>;
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multiclass BB<string name, string help1, string help2> {
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def NAME: Flag<["--"], name>, HelpText<help1>;
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def no_ # NAME: Flag<["--"], "no-" # name>, HelpText<help2>;
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}
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multiclass Eq<string name, string help> {
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def NAME #_EQ : Joined<["--"], name #"=">,
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HelpText<help>;
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def : Separate<["--"], name>, Alias<!cast<Joined>(NAME #_EQ)>;
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}
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def help : FF<"help", "Display this help">;
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defm strip_underscore : BB<"strip-underscore", "Strip the leading underscore", "Don't strip the leading underscore">;
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def types : FF<"types", "Attempt to demangle types as well as function names">;
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def no_params : FF<"no-params", "Skip function parameters and return types">;
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def version : FF<"version", "Display the version">;
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defm : Eq<"format", "Specify mangling format. Currently ignored because only 'gnu' is supported">;
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def : F<"s", "Alias for --format">;
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def : F<"_", "Alias for --strip-underscore">, Alias<strip_underscore>;
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def : F<"h", "Alias for --help">, Alias<help>;
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def : F<"n", "Alias for --no-strip-underscore">, Alias<no_strip_underscore>;
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def : F<"p", "Alias for --no-params">, Alias<no_params>;
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def : F<"t", "Alias for --types">, Alias<types>;
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