FIR2IR: extract implicitCast function

compiler/fir/fir2ir/src/org/jetbrains/kotlin/fir/backend/ConversionUtils.kt

@@ -840,3 +840,14 @@ context(Fir2IrComponents)
 internal fun FirClass.declaredScope(): FirContainingNamesAwareScope {
     return symbol.declaredScope()
 }
+
+internal fun implicitCast(original: IrExpression, castType: IrType, typeOperator: IrTypeOperator): IrTypeOperatorCall {
+    return IrTypeOperatorCallImpl(
+        original.startOffset,
+        original.endOffset,
+        castType,
+        typeOperator,
+        castType,
+        original
+    )
+}

compiler/fir/fir2ir/src/org/jetbrains/kotlin/fir/backend/Fir2IrImplicitCastInserter.kt

@@ -329,14 +329,7 @@ class Fir2IrImplicitCastInserter(
                 IrTypeOperator.IMPLICIT_CAST
             }
 
-            return IrTypeOperatorCallImpl(
-                original.startOffset,
-                original.endOffset,
-                castType,
-                typeOperator,
-                castType,
-                original
-            )
+            return implicitCast(original, castType, typeOperator)
         }
 
         internal fun coerceToUnitIfNeeded(original: IrExpression, irBuiltIns: IrBuiltIns): IrExpression {

compiler/fir/fir2ir/src/org/jetbrains/kotlin/fir/backend/generators/CallAndReferenceGenerator.kt

@@ -1276,13 +1276,10 @@ class CallAndReferenceGenerator(
                             // NB: for FE 1.0, this type cast is added by InterfaceObjectCallsLowering
                             // However, it doesn't work for FIR due to different f/o structure
                             // (FIR calls Any method directly, but FE 1.0 calls its interface f/o instead)
-                            IrTypeOperatorCallImpl(
-                                baseDispatchReceiver.startOffset,
-                                baseDispatchReceiver.endOffset,
+                            implicitCast(
+                                baseDispatchReceiver,
                                 irBuiltIns.anyType,
-                                IrTypeOperator.IMPLICIT_CAST,
-                                irBuiltIns.anyType,
-                                baseDispatchReceiver
+                                IrTypeOperator.IMPLICIT_CAST
                             )
                         }
                 }