[WebAssembly] Use helper macro from ELF/Options.td to tidy. NFC

lld/trunk/wasm/Options.td

def entry: S<"entry">, MetaVarName<"<entry>">,
   HelpText<"Name of entry point symbol">;
 
 def error_limit: J<"error-limit=">,
   HelpText<"Maximum number of errors to emit before stopping (0 = no limit)">;
 
 def fatal_warnings: F<"fatal-warnings">,
   HelpText<"Treat warnings as errors">;
 
-def gc_sections: F<"gc-sections">,
-  HelpText<"Enable garbage collection of unused sections">;
+defm gc_sections: B<"gc-sections",
+    "Enable garbage collection of unused sections",
+    "Disable garbage collection of unused sections">;
 
 def help: F<"help">, HelpText<"Print option help">;
 
 def l: JoinedOrSeparate<["-"], "l">, MetaVarName<"<libName>">,
   HelpText<"Root name of library to use">;
 
 def L: JoinedOrSeparate<["-"], "L">, MetaVarName<"<dir>">,
   HelpText<"Add a directory to the library search path">;
 
 def mllvm: S<"mllvm">, HelpText<"Options to pass to LLVM">;
 
 def no_threads: F<"no-threads">,
   HelpText<"Do not run the linker multi-threaded">;
 
 def no_color_diagnostics: F<"no-color-diagnostics">,
   HelpText<"Do not use colors in diagnostics">;
 
 def no_fatal_warnings: F<"no-fatal-warnings">;
 
-def no_gc_sections: F<"no-gc-sections">,
-  HelpText<"Disable garbage collection of unused sections">;
-
-def no_print_gc_sections: F<"no-print-gc-sections">,
-  HelpText<"Do not list removed unused sections">;
-
 def o: JoinedOrSeparate<["-"], "o">, MetaVarName<"<path>">,
   HelpText<"Path to file to write output">;
 
-def print_gc_sections: F<"print-gc-sections">,
-  HelpText<"List removed unused sections">;
+defm print_gc_sections: B<"print-gc-sections",
+    "List removed unused sections",
+    "Do not list removed unused sections">;
 
 def relocatable: F<"relocatable">, HelpText<"Create relocatable object file">;
 
 def strip_all: F<"strip-all">, HelpText<"Strip all symbols">;
 
 def strip_debug: F<"strip-debug">, HelpText<"Strip debugging information">;
 
 def threads: F<"threads">, HelpText<"Run the linker multi-threaded">;
def allow_undefined: F<"allow-undefined">,
   HelpText<"Allow undefined symbols in linked binary">;
 
 def allow_undefined_file: J<"allow-undefined-file=">,
   HelpText<"Allow symbols listed in <file> to be undefined in linked binary">;
 
 def allow_undefined_file_s: Separate<["-"], "allow-undefined-file">,
   Alias<allow_undefined_file>;
 
-def check_signatures: F<"check-signatures">,
-  HelpText<"Check function signatures">;
+defm check_signatures: B<"check-signatures",
+    "Check function signatures",
+    "Don't check function signatures">;
 
 defm export: Eq<"export">,
   HelpText<"Force a symbol to be exported">;
 
 def global_base: J<"global-base=">,
   HelpText<"Where to start to place global data">;
 
 def import_memory: F<"import-memory">,
   HelpText<"Import memory from the environment">;
 
 def initial_memory: J<"initial-memory=">,
   HelpText<"Initial size of the linear memory">;
 
 def max_memory: J<"max-memory=">,
   HelpText<"Maximum size of the linear memory">;
 
-def no_check_signatures: F<"no-check-signatures">,
-  HelpText<"Don't check function signatures">;
-
 def no_entry: F<"no-entry">,
   HelpText<"Do not output any entry point">;
 
 // Aliases
 def alias_entry_e: JoinedOrSeparate<["-"], "e">, Alias<entry>;
 def alias_entry_entry: J<"entry=">, Alias<entry>;
 def alias_initial_memory_i: Flag<["-"], "i">, Alias<initial_memory>;
 def alias_max_memory_m: Flag<["-"], "m">, Alias<max_memory>;
 def alias_relocatable_r: Flag<["-"], "r">, Alias<relocatable>;
 def alias_undefined_u: JoinedOrSeparate<["-"], "u">, Alias<undefined>;