[CIR][NFS] Fix missing return statement warning

Author: AmrDeveloper

clang/lib/CIR/CodeGen/CIRGenExprScalar.cpp

@@ -102,8 +102,9 @@ class ScalarExprEmitter : public StmtVisitor<ScalarExprEmitter, mlir::Value> {
                                      mlir::Type dstTy) const {
     if (mlir::isa<cir::IntType>(dstTy))
       return builder.createBoolToInt(value, dstTy);
-    if (mlir::isa<cir::BoolType>(dstTy))
-      return value;
+
+    assert(mlir::isa<cir::BoolType>(dstTy) && "Expect bool type");
+    return value;
   }
 
   //===--------------------------------------------------------------------===//
@@ -1857,9 +1858,6 @@ mlir::Value ScalarExprEmitter::VisitUnaryLNot(const UnaryOperator *e) {
 
   // ZExt result to the expr type.
   return maybePromoteBoolResult(boolVal, cgf.convertType(e->getType()));
-
-  cgf.cgm.errorNYI("destination type for logical-not unary operator is NYI");
-  return {};
 }
 
 /// Return the size or alignment of the type of argument of the sizeof