[clang] [BitInt] Expose a _BitInt literal suffix in C++ (PR #86586)

[Erich Keane via cfe-commits]

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@@ -80,7 +80,8 @@ class NumericLiteralParser {
   bool isFloat128 : 1;      // 1.0q
   bool isFract : 1;         // 1.0hr/r/lr/uhr/ur/ulr
   bool isAccum : 1;         // 1.0hk/k/lk/uhk/uk/ulk
-  bool isBitInt : 1;        // 1wb, 1uwb (C23)
+  bool isBitInt : 1; // 1wb, 1uwb (C23) or 1__wb, 1__uwb (Clang extension in C++
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erichkeane wrote:

please make the comments line up with the above, I know clang-format disagrees (and requires manual modification), but this makes a lot of sense with the way it is lined up.

https://github.com/llvm/llvm-project/pull/86586