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

[Richard Smith via cfe-commits]

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@@ -5571,11 +5571,50 @@ LValue CodeGenFunction::EmitBinaryOperatorLValue(const BinaryOperator *E) {
       break;
     }
 
-    RValue RV = EmitAnyExpr(E->getRHS());
+    llvm::Value *Previous = nullptr;
+    RValue RV;
+    QualType SrcType = E->getRHS()->getType();
+    // Check if LHS is a bitfield and sanitizer checks are enabled
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zygoloid wrote:

(nit, throughout) Coding style is to end comments with a period.

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