[clang] [flang] [mlir] [clang][flang][mlir] Support -frecord-command-line option (PR #102975)

[Fangrui Song via cfe-commits]

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@@ -1980,9 +1980,11 @@ within a command line are combined with spaces; spaces and backslashes within an
 argument are escaped with backslashes. This format differs from the format of
 the equivalent section produced by GCC with the -frecord-gcc-switches flag.
 This option is currently only supported on ELF targets.}]>,
-  Group<f_clang_Group>;
+  Group<f_clang_Group>,
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MaskRay wrote:

I think f_clang_Group is a legacy group for Clang options not in GCC. f_clang_Group has never gain significant adoption and it's used by any code.

New -f options can just use f_Group.

https://github.com/llvm/llvm-project/pull/102975