IR: IrField.isFinal

compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/declarations/IrField.kt

@@ -21,5 +21,6 @@ interface IrField : IrSymbolDeclaration<IrFieldSymbol> {
     val name: Name
     val type: KotlinType
     val visibility: Visibility
+    val isFinal: Boolean
     var initializer: IrExpressionBody?
 }

compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/declarations/impl/IrFieldImpl.kt

@@ -16,6 +16,7 @@
 
 package org.jetbrains.kotlin.ir.declarations.impl
 
+import org.jetbrains.kotlin.descriptors.Modality
 import org.jetbrains.kotlin.descriptors.PropertyDescriptor
 import org.jetbrains.kotlin.descriptors.Visibility
 import org.jetbrains.kotlin.ir.declarations.IrDeclarationOrigin
@@ -36,12 +37,21 @@ class IrFieldImpl(
     override val symbol: IrFieldSymbol,
     override val name: Name,
     override val type: KotlinType,
-    override val visibility: Visibility
+    override val visibility: Visibility,
+    override val isFinal: Boolean
 ) : IrDeclarationBase(startOffset, endOffset, origin), IrField {
+
+    constructor(startOffset: Int, endOffset: Int, origin: IrDeclarationOrigin, symbol: IrFieldSymbol, isFinal: Boolean) :
+            this(
+                startOffset, endOffset, origin, symbol,
+                symbol.descriptor.name, symbol.descriptor.type, symbol.descriptor.visibility,
+                isFinal
+            )
+
     constructor(startOffset: Int, endOffset: Int, origin: IrDeclarationOrigin, symbol: IrFieldSymbol) :
             this(
                 startOffset, endOffset, origin, symbol,
-                symbol.descriptor.name, symbol.descriptor.type, symbol.descriptor.visibility
+                symbol.descriptor.modality == Modality.FINAL
             )
 
     constructor(startOffset: Int, endOffset: Int, origin: IrDeclarationOrigin, descriptor: PropertyDescriptor) :

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

@@ -104,7 +104,11 @@ class RenderIrElementVisitor : IrElementVisitor<String, Nothing?> {
 
     override fun visitField(declaration: IrField, data: Nothing?): String =
         "FIELD ${declaration.renderOriginIfNonTrivial()}" +
-                "name:${declaration.name} type:${declaration.type.render()} visibility:${declaration.visibility}"
+                "name:${declaration.name} type:${declaration.type.render()} visibility:${declaration.visibility} " +
+                "flags:${declaration.renderFieldFlags()}"
+
+    private fun IrField.renderFieldFlags() =
+        if (isFinal) "final" else ""
 
     override fun visitClass(declaration: IrClass, data: Nothing?): String =
         declaration.run {