[lld-macho] Remove no_dtrace_dof from un-implemented group.

[oontvoo]

Summary

One fewer warning.
In practice, lld already "implements" it. (ie., it does not do dtrace-dof processing ever).

[thakis]

Want to add a quick RUN: %lld -no_dtrace_dof line to lld/test/MachO/driver.test to make sure this no longer emits a warning? With that, lg.

lld/MachO/Options.td

950

Just "Disable dtrace-dof processing (default)" seems sufficient. Brevity good.

[thakis]

Actually lld/test/MachO/silent-ignore.test is a better file for the test.

[oontvoo]

added test + shortened helptext

[oontvoo]

Thanks!

lld/MachO/Options.td

def not_for_dyld_shared_cache : Flag<["-"], "not_for_dyld_shared_cache">,
     Flags<[HelpHidden]>,
     Group<grp_rare>;
 def mllvm : Separate<["-"], "mllvm">,
     HelpText<"Options to pass to LLVM">,
     Group<grp_rare>;
 def mcpu : Separate<["-"], "mcpu">,
     HelpText<"Processor family target for LTO code generation">,
     Group<grp_rare>;
+def no_dtrace_dof : Flag<["-"], "no_dtrace_dof">,
+    HelpText<"Disable dtrace-dof processing (default).">,
+    Group<grp_rare>;
 
 def grp_deprecated : OptionGroup<"deprecated">, HelpText<"DEPRECATED">;
 
 def lazy_framework : Separate<["-"], "lazy_framework">,
     MetaVarName<"<name>">,
     HelpText<"This option is deprecated and is now an alias for -framework.">,
     Flags<[HelpHidden]>,
     Group<grp_deprecated>;

 def kexts_use_stubs : Flag<["-"], "kexts_use_stubs">,
     HelpText<"This option is undocumented in ld64">,
     Flags<[HelpHidden]>,
     Group<grp_undocumented>;
 def no_compact_unwind : Flag<["-"], "no_compact_unwind">,
     HelpText<"This option is undocumented in ld64">,
     Flags<[HelpHidden]>,
     Group<grp_undocumented>;
-def no_dtrace_dof : Flag<["-"], "no_dtrace_dof">,
-    HelpText<"This option is undocumented in ld64">,
-    Flags<[HelpHidden]>,
-    Group<grp_undocumented>;
 def no_new_main : Flag<["-"], "no_new_main">,
     HelpText<"This option is undocumented in ld64">,
     Flags<[HelpHidden]>,
     Group<grp_undocumented>;
 def objc_abi_version : Separate<["-"], "objc_abi_version">,
     HelpText<"This option is undocumented in ld64">,
     Flags<[HelpHidden]>,
     Group<grp_undocumented>;

lld/test/MachO/silent-ignore.test

 RUN: %lld --version \
 RUN:   -dynamic \
 RUN:   -no_deduplicate \
 RUN:   -lto_library /lib/foo \
 RUN:   -macosx_version_min 0 \
+RUN:   -no_dtrace_dof \
 RUN:   -dependency_info /path/to/dependency_info.dat \
 RUN:   -lto_library ../lib/libLTO.dylib \
 RUN:   -mllvm -time-passes \
 RUN:   -objc_abi_version 2 \
 RUN:   -ios_simulator_version_min 9.0.0 \
 RUN:   -sdk_version 13.2
 RUN: not %lld -v --not-an-ignored-argument 2>&1 | FileCheck %s
 CHECK: error: unknown argument '--not-an-ignored-argument'