Fix all IR element duplication warnings/errors in JVM IR.

compiler/ir/backend.jvm/src/org/jetbrains/kotlin/backend/jvm/lower/ConstLowering.kt

@@ -16,6 +16,7 @@ import org.jetbrains.kotlin.ir.expressions.IrCall
 import org.jetbrains.kotlin.ir.expressions.IrConst
 import org.jetbrains.kotlin.ir.expressions.IrExpression
 import org.jetbrains.kotlin.ir.expressions.IrGetField
+import org.jetbrains.kotlin.ir.util.deepCopyWithSymbols
 import org.jetbrains.kotlin.ir.visitors.IrElementTransformerVoid
 import org.jetbrains.kotlin.ir.visitors.transformChildrenVoid
 
@@ -30,7 +31,7 @@ fun IrField.constantValue(implicitConst: Boolean = false): IrConst<*>? {
     // Kotlin fields are only inlined if explicitly `const` to avoid making the values part of the ABI.
     val inline = correspondingPropertySymbol?.owner?.isConst == true ||
             (isStatic && isFinal && (origin == IrDeclarationOrigin.IR_EXTERNAL_JAVA_DECLARATION_STUB || implicitConst))
-    return if (inline) initializer?.expression as? IrConst<*> else null
+    return if (inline) (initializer?.expression as? IrConst<*>)?.copy() else null
 }
 
 class ConstLowering(val context: CommonBackendContext) : IrElementTransformerVoid(), FileLoweringPass {

compiler/ir/backend.jvm/src/org/jetbrains/kotlin/backend/jvm/lower/JvmBuiltinOptimizationLowering.kt

@@ -272,7 +272,7 @@ class JvmBuiltinOptimizationLowering(val context: JvmBackendContext) : FileLower
                 // initializer with the constant initializer.
                 val variable = expression.symbol.owner
                 return if (isImmutableTemporaryVariableWithConstantValue(variable))
-                    (variable as IrVariable).initializer!!
+                    ((variable as IrVariable).initializer!! as IrConst<*>).copy()
                 else
                     expression
             }

compiler/ir/backend.jvm/src/org/jetbrains/kotlin/backend/jvm/lower/MoveCompanionObjectFieldsLowering.kt

@@ -27,6 +27,7 @@ import org.jetbrains.kotlin.ir.symbols.IrFieldSymbol
 import org.jetbrains.kotlin.ir.symbols.impl.IrAnonymousInitializerSymbolImpl
 import org.jetbrains.kotlin.ir.symbols.impl.IrFieldSymbolImpl
 import org.jetbrains.kotlin.ir.symbols.impl.IrVariableSymbolImpl
+import org.jetbrains.kotlin.ir.util.deepCopyWithSymbols
 import org.jetbrains.kotlin.ir.util.hasAnnotation
 import org.jetbrains.kotlin.ir.util.isObject
 import org.jetbrains.kotlin.ir.util.patchDeclarationParents
@@ -224,7 +225,7 @@ private class MoveOrCopyCompanionObjectFieldsLowering(val context: CommonBackend
         if (oldInitializer != null) {
             field.initializer = oldInitializer
                 .replaceThisByStaticReference(context, propertyParent, propertyParent.thisReceiver!!)
-                .patchDeclarationParents(field) as IrExpressionBody
+                .deepCopyWithSymbols(field) as IrExpressionBody
         }
 
         return field