<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/61859>61859</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            how to get -fparse-all-comments working?
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
            new issue
      </td>
    </tr>

    <tr>
      <th>Assignees</th>
      <td>
      </td>
    </tr>

    <tr>
      <th>Reporter</th>
      <td>
          Leon-Zhang
      </td>
    </tr>
</table>

<pre>
    I am using following code to create command option parser:

const char* argv[]={"DevToolsd.exe",pcszFirstSrcFile,"-save-stats",
 "-fparse-all-comments", "--",
        //"-Wdocumentation",
 //Include directories
        "-Ixxxx",
        "-x", strLang.CStr(),
        "-std",strLangStd.CStr()
        
 };
    int argc=_ARRAY_ELEM_COUNT(argv);
 llvm::Expected<clang::tooling::CommonOptionsParser> optionsParser=
 CommonOptionsParser::create(argc,argv,Category);

I have trace down to CommandLineParser::ParseCommandLineOptions method, it find arguments from llvm::cl::TopLevelSubCommand global variable, which its OptionMap member variable content as follow:
```
arg:generate-merged-base-profiles
arg:opt-bisect-limit
arg:import-constants-with-refs
arg:filter-print-funcs
arg:opaque-pointers
arg:profile-summary-large-working-set-size-threshold
arg:profile-summary-cutoff-cold
arg:profile-summary-cold-count
arg:enable-fs-discriminator
arg:profile-isfs
arg:print-summary-global-ids
arg:profile-summary-contextless
arg:expand-constant-exprs
arg:remarks-section
arg:profile-summary-cutoff-hot
arg:profile-summary-hot-count
arg:non-global-value-max-name-size
arg:propagate-attrs
arg:time-passes-per-run
arg:verify-noalias-scope-decl-dom
arg:disable-bitcode-version-upgrade
arg:print-changed
arg:disable-i2p-p2i-opt
arg:disable-ondemand-mds-loading
arg:print-module-scope
arg:static-func-strip-dirname-prefix
arg:pass-remarks-analysis
arg:debug-pass
arg:time-passes
arg:print-before
arg:pass-remarks-missed
arg:print-after
arg:use-dbg-addr
arg:profile-summary-huge-working-set-size-threshold
arg:print-after-all
arg:use-dereferenceable-at-point-semantics
arg:print-before-all
arg:as-secure-log-file-name
arg:import-full-type-definitions
arg:enable-name-compression
arg:pass-remarks
arg:asm-macro-max-nesting-depth
arg:profile-symbol-list-cutoff
arg:verify-dom-info
arg:static-func-full-module-prefix

```

there is no such argument named fparse-all-comments. So my question is how I can get fparse-all-comments working? Thanks.

</pre>
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