[clang] [clang-format] Preserve compact TableGen bit ranges (PR #215837)

[Björn Schäpers via cfe-commits]

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@@ -644,6 +644,9 @@ features cannot lower the translation-unit ABI level;
   `thread_local`, `extern`, `mutable`, `signed`, `unsigned`, `long`, `short`,
   and `explicit` declaration specifiers.
 
+- Fixed formatting of TableGen bit ranges so that hyphen separators remain
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HazardyKnusperkeks wrote:

We do not post fixes here, only new features.

https://github.com/llvm/llvm-project/pull/215837