[WebAssembly] Sort options in `Options.td`. NFC.

[sbc100]

• sort

lld/trunk/wasm/Options.td

 include "llvm/Option/OptParser.td"
 
 // For options whose names are multiple letters, either one dash or
 // two can precede the option name except those that start with 'o'.
 class F<string name>: Flag<["--", "-"], name>;
 class J<string name>: Joined<["--", "-"], name>;
 class S<string name>: Separate<["--", "-"], name>;
 
 multiclass Eq<string name> {
   def "": Separate<["--", "-"], name>;
   def _eq: Joined<["--", "-"], name # "=">, Alias<!cast<Separate>(NAME)>;
 }
 
-def L: JoinedOrSeparate<["-"], "L">, MetaVarName<"<dir>">,
-  HelpText<"Add a directory to the library search path">;
-
+// The follow flags are shared with the ELF linker
 def color_diagnostics: F<"color-diagnostics">,
   HelpText<"Use colors in diagnostics">;
 
 def color_diagnostics_eq: J<"color-diagnostics=">,
   HelpText<"Use colors in diagnostics">;
 
-// The follow flags are shared with the ELF linker
+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 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_check_signatures: F<"no-check-signatures">, HelpText<"Don't check function signatures">;
+def no_fatal_warnings: F<"no-fatal-warnings">;
 
 def o: JoinedOrSeparate<["-"], "o">, MetaVarName<"<path>">,
   HelpText<"Path to file to write output">;
 
-def threads: F<"threads">, HelpText<"Run the linker multi-threaded">;
-
-def check_signatures: F<"check-signatures">, HelpText<"Check function signatures">;
-
-def v: Flag<["-"], "v">, HelpText<"Display the version number">;
-
-def version: F<"version">, HelpText<"Display the version number and exit">;
-
-def verbose: F<"verbose">, HelpText<"Verbose mode">;
-
 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">;
+
 defm undefined: Eq<"undefined">,
   HelpText<"Force undefined symbol during linking">;
 
+def v: Flag<["-"], "v">, HelpText<"Display the version number">;
+
+def verbose: F<"verbose">, HelpText<"Verbose mode">;
+
+def version: F<"version">, HelpText<"Display the version number and exit">;
+
 def z: JoinedOrSeparate<["-"], "z">, MetaVarName<"<option>">,
   HelpText<"Linker option extensions">;
 
-def entry: S<"entry">, MetaVarName<"<entry>">,
-  HelpText<"Name of entry point symbol">;
+// The follow flags are unique to wasm
 
-def no_entry: F<"no-entry">,
-  HelpText<"Do not output any entry point">;
+def allow_undefined: F<"allow-undefined">,
+  HelpText<"Allow undefined symbols in linked binary">;
 
-def error_limit: J<"error-limit=">,
-  HelpText<"Maximum number of errors to emit before stopping (0 = no limit)">;
+def allow_undefined_file: J<"allow-undefined-file=">,
+  HelpText<"Allow symbols listed in <file> to be undefined in linked binary">;
 
-// The follow flags are unique to wasm
+def allow_undefined_file_s: Separate<["-"], "allow-undefined-file">,
+  Alias<allow_undefined_file>;
+
+def check_signatures: F<"check-signatures">,
+  HelpText<"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 import_memory: F<"import-memory">,
-  HelpText<"Import memory from the environment">;
-
-def allow_undefined: F<"allow-undefined">,
-  HelpText<"Allow undefined symbols in linked binary">;
+def no_check_signatures: F<"no-check-signatures">,
+  HelpText<"Don't check function signatures">;
 
-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 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_entry_e: JoinedOrSeparate<["-"], "e">, Alias<entry>;
-def alias_entry_entry: J<"entry=">, Alias<entry>;
 def alias_undefined_u: JoinedOrSeparate<["-"], "u">, Alias<undefined>;