Fir2Ir: put properties data from IrBuiltinsOverFir into symbol table

Properties themselves, accessors, backing fields.

compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/builders/declarations/declarationBuilders.kt

@@ -140,6 +140,18 @@ fun IrProperty.addDefaultGetter(parentClass: IrClass, builtIns: IrBuiltIns) {
     }
 }
 
+inline fun IrProperty.addBackingField(builder: IrFieldBuilder.() -> Unit = {}): IrField =
+    IrFieldBuilder().run {
+        name = this@addBackingField.name
+        origin = IrDeclarationOrigin.PROPERTY_BACKING_FIELD
+        builder()
+        factory.buildField(this).also { field ->
+            this@addBackingField.backingField = field
+            field.correspondingPropertySymbol = this@addBackingField.symbol
+            field.parent = this@addBackingField.parent
+        }
+    }
+
 @PublishedApi
 internal fun IrFactory.buildFunction(builder: IrFunctionBuilder): IrSimpleFunction = with(builder) {
     createFunction(

compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/util/SymbolTable.kt

@@ -683,6 +683,10 @@ open class SymbolTable(
         }
     }
 
+    fun declareFieldWithSignature(sig: IdSignature, symbol: IrFieldSymbol) {
+        fieldSymbolTable.set(sig, symbol)
+    }
+
     override fun referenceField(descriptor: PropertyDescriptor): IrFieldSymbol =
         fieldSymbolTable.referenced(descriptor) { signature -> createFieldSymbol(descriptor, signature) }
 
@@ -760,6 +764,10 @@ open class SymbolTable(
         }
     }
 
+    fun declarePropertyWithSignature(sig: IdSignature, symbol: IrPropertySymbol) {
+        propertySymbolTable.set(sig, symbol)
+    }
+
     override fun referenceProperty(descriptor: PropertyDescriptor): IrPropertySymbol =
         propertySymbolTable.referenced(descriptor) { signature -> createPropertySymbol(descriptor, signature) }