[lld] [compiler-rt] [flang] [libcxx] [llvm] [libc] [clang] [clang-tools-extra] [lldb] [clang][NFC] Annotate `Type` bit-fields with `clang::preferred_type` (PR #70349)

[Aaron Ballman via cfe-commits]

================
@@ -569,4 +569,12 @@ void AnnotateIgnoreWritesEnd(const char *file, int line);
 #define LLVM_NO_PROFILE_INSTRUMENT_FUNCTION
 #endif
 
+/// \macro LLVM_PREFERRED_TYPE
+/// Adjust type of bit-field in debug info.
+#if __has_attribute(preferred_type)
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AaronBallman wrote:

```suggestion
#if LLVM_HAS_CPP_ATTRIBUTE(clang::preferred_type)
```
or leave the condition as-is and change the expansion to using `__attribute__(())` instead. Just making sure they both match up. (If we're using this from C interfaces, then we probably want to use the GNU-style spelling.)

https://github.com/llvm/llvm-project/pull/70349