[clang] [compiler-rt] [clang][UBSan] Add implicit conversion check for bitfields (PR #75481)

[John McCall via cfe-commits]

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@@ -1035,7 +1050,7 @@ EmitIntegerTruncationCheckHelper(Value *Src, QualType SrcType, Value *Dst,
   }
 
   llvm::Value *Check = nullptr;
-  // 1. Extend the truncated value back to the same width as the Src.
+  // 1. Convert the Dst back to the same type as Src.
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rjmccall wrote:

This is not an improvement in the comment.

https://github.com/llvm/llvm-project/pull/75481