[clang] [LinkerWrapper] Fix -fsave-optimization-record default file (PR #149003)

[Fangrui Song via cfe-commits]

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@@ -5895,6 +5895,11 @@ def o : JoinedOrSeparate<["-"], "o">,
   Visibility<[ClangOption, CC1Option, CC1AsOption, FC1Option, FlangOption]>,
   HelpText<"Write output to <file>">, MetaVarName<"<file>">,
   MarshallingInfoString<FrontendOpts<"OutputFile">>;
+def foutput_file_base : Joined<["-"], "foutput-file-base=">,
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MaskRay wrote:

Is this a new driver option? For extra output files we can use -dumpdir https://maskray.me/blog/2023-04-25-compiler-output-files

https://github.com/llvm/llvm-project/pull/149003