[clang] [Driver][X86] Add -m[no-]apxf to m_x86_Features_Group (PR #140874)

[Shengchen Kan via cfe-commits]

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@@ -6679,8 +6679,13 @@ def mapx_features_EQ : CommaJoined<["-"], "mapx-features=">, Group<m_x86_Feature
     HelpText<"Enable features of APX">, Values<"egpr,push2pop2,ppx,ndd,ccmp,nf,cf,zu">,  Visibility<[ClangOption, CLOption, FlangOption]>;
 def mno_apx_features_EQ : CommaJoined<["-"], "mno-apx-features=">, Group<m_x86_Features_Group>,
     HelpText<"Disable features of APX">, Values<"egpr,push2pop2,ppx,ndd,ccmp,nf,cf,zu">, Visibility<[ClangOption, CLOption, FlangOption]>;
-def mapxf : Flag<["-"], "mapxf">, Alias<mapx_features_EQ>, AliasArgs<["egpr","push2pop2","ppx","ndd","ccmp","nf","cf","zu"]>;
-def mno_apxf : Flag<["-"], "mno-apxf">, Alias<mno_apx_features_EQ>, AliasArgs<["egpr","push2pop2","ppx","ndd","ccmp","nf","cf","zu"]>;
+def mapxf : Flag<["-"], "mapxf">, Alias<mapx_features_EQ>,
+            AliasArgs<["egpr","push2pop2","ppx","ndd","ccmp","nf","cf","zu"]>,
+            Group<m_x86_Features_Group>, HelpText<"Enable all features of APX">;
+def mno_apxf : Flag<["-"], "mno-apxf">, Alias<mno_apx_features_EQ>,
+               AliasArgs<["egpr","push2pop2","ppx","ndd","ccmp","nf","cf","zu"]>,
+               Group<m_x86_Features_Group>,
+               HelpText<"Disable all features of APX">;
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KanRobert wrote:

The description is not accurate. APX -> APX_F.

BTW,  I suggest to remove the HelpText for m[no-]apxf since other features has no text either, so that they would not appear in `--help`

https://github.com/llvm/llvm-project/pull/140874