Address code review comments

Author: AmrDeveloper

clang/lib/CIR/CodeGen/CIRGenExprAggregate.cpp

@@ -576,7 +576,7 @@ void AggExprEmitter::emitNullInitializationToLValue(mlir::Location loc,
       return;
     }
 
-    cgf.emitStoreThroughBitfieldLValue(RValue::get(null), lv);
+    cgf.cgm.errorNYI("emitStoreThroughBitfieldLValue");
     return;
   }
 

clang/test/CIR/CodeGen/struct.cpp

@@ -291,6 +291,8 @@ void compound_literal_expr() { CompleteS a = (CompleteS){}; }
 // CIR: %[[CONST_0:.*]] = cir.const #cir.int<0> : !s8i
 // CIR: cir.store{{.*}} %[[CONST_0]], %[[A_ELEM_1_PTR]] : !s8i, !cir.ptr<!s8i>
 
+// TODO(cir): zero-initialize the padding
+
 // LLVM: %[[A_ADDR:.*]] = alloca %struct.CompleteS, i64 1, align 4
 // LLVM: %[[A_ELEM_0_PTR:.*]] = getelementptr %struct.CompleteS, ptr %[[A_ADDR]], i32 0, i32 0
 // LLVM: store i32 0, ptr %[[A_ELEM_0_PTR]], align 4