[clang] [NFC][clang][Driver] Specify options for <arg> with -save-temps=<arg> (PR #80921)

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llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-clang

Author: Jacob Lambert (lamb-j)

<details>
<summary>Changes</summary>



---
Full diff: https://github.com/llvm/llvm-project/pull/80921.diff


1 Files Affected:

- (modified) clang/include/clang/Driver/Options.td (+3-1) 


``````````diff
diff --git a/clang/include/clang/Driver/Options.td b/clang/include/clang/Driver/Options.td
index 4b232b8aab722..6b13530799e10 100644
--- a/clang/include/clang/Driver/Options.td
+++ b/clang/include/clang/Driver/Options.td
@@ -5392,7 +5392,9 @@ def regcall4 : Flag<["-"], "regcall4">, Group<m_Group>,
   MarshallingInfoFlag<LangOpts<"RegCall4">>;
 def save_temps_EQ : Joined<["-", "--"], "save-temps=">, Flags<[NoXarchOption]>,
   Visibility<[ClangOption, CC1Option, FlangOption, FC1Option]>,
-  HelpText<"Save intermediate compilation results.">;
+  HelpText<"Save intermediate compilation results. The <arg> option can be set "
+  "to cwd for current working directory, or obj which will save temporary "
+  "files in the same directory as the final output file">;
 def save_temps : Flag<["-", "--"], "save-temps">, Flags<[NoXarchOption]>,
   Visibility<[ClangOption, FlangOption, FC1Option]>,
   Alias<save_temps_EQ>, AliasArgs<["cwd"]>,

``````````

</details>


https://github.com/llvm/llvm-project/pull/80921