FIR2IR: support object receiver case (this fixes 24 black box tests)

compiler/fir/fir2ir/src/org/jetbrains/kotlin/fir/backend/Fir2IrVisitor.kt

@@ -793,22 +793,42 @@ class Fir2IrVisitor(
         }
     }
 
+    private fun FirQualifiedAccess.findIrDispatchReceiver(): IrExpression = findIrReceiver(isDispatch = true)
+
+    private fun FirQualifiedAccess.findIrExtensionReceiver(): IrExpression = findIrReceiver(isDispatch = false)
+
+    private fun FirQualifiedAccess.findIrReceiver(isDispatch: Boolean): IrExpression {
+        val firReceiver = if (isDispatch) dispatchReceiver else extensionReceiver
+        return firReceiver.takeIf { it !is FirNoReceiverExpression }?.toIrExpression()
+            ?: explicitReceiver?.toIrExpression() // NB: this applies to the situation when call is unresolved
+            ?: run {
+                // Object case
+                val callableReference = calleeReference as? FirResolvedNamedReference
+                val ownerClassId = (callableReference?.resolvedSymbol as? FirCallableSymbol<*>)?.callableId?.classId
+                val ownerClassSymbol = ownerClassId?.let { session.firSymbolProvider.getClassLikeSymbolByFqName(it) }
+                val firClass = (ownerClassSymbol?.fir as? FirClass)?.takeIf {
+                    it is FirAnonymousObject || it is FirRegularClass && it.classKind == ClassKind.OBJECT
+                }
+                firClass?.convertWithOffsets { startOffset, endOffset ->
+                    val irClass = declarationStorage.getIrClass(firClass, setParent = false)
+                    IrGetObjectValueImpl(startOffset, endOffset, irClass.defaultType, irClass.symbol)
+                }
+            } ?: run {
+                val name = if (isDispatch) "Dispatch" else "Extension"
+                throw AssertionError(
+                    "$name receiver expected: ${render()} to ${calleeReference.render()}"
+                )
+            }
+    }
+
     private fun IrExpression.applyReceivers(qualifiedAccess: FirQualifiedAccess): IrExpression {
         return when (this) {
             is IrCallImpl -> {
                 val ownerFunction = symbol.owner
                 if (ownerFunction.dispatchReceiverParameter != null) {
-                    dispatchReceiver = qualifiedAccess.dispatchReceiver.takeIf { it !is FirNoReceiverExpression }?.toIrExpression()
-                        ?: qualifiedAccess.explicitReceiver?.toIrExpression() // NB: this applies to the situation when call is unresolved
-                    if (dispatchReceiver == null) {
-                        throw AssertionError()
-                    }
+                    dispatchReceiver = qualifiedAccess.findIrDispatchReceiver()
                 } else if (ownerFunction.extensionReceiverParameter != null) {
-                    extensionReceiver = qualifiedAccess.extensionReceiver.takeIf { it !is FirNoReceiverExpression }?.toIrExpression()
-                        ?: qualifiedAccess.explicitReceiver?.toIrExpression()
-                    if (extensionReceiver == null) {
-                        throw AssertionError()
-                    }
+                    extensionReceiver = qualifiedAccess.findIrExtensionReceiver()
                 }
                 this
             }

compiler/testData/codegen/box/compatibility/privateCompanionObject.kt

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 class Test {
     private companion object {
         val res = "OK"

compiler/testData/codegen/box/inlineClasses/contextsAndAccessors/accessPrivateInlineClassCompanionMethod.kt

@@ -1,5 +1,4 @@
 // !LANGUAGE: +InlineClasses
-// IGNORE_BACKEND_FIR: JVM_IR
 
 inline class R(private val r: Int) {
     fun test() = ok()

compiler/testData/codegen/box/inlineClasses/contextsAndAccessors/accessPrivateInlineClassCompanionMethod2.kt

@@ -1,5 +1,4 @@
 // !LANGUAGE: +InlineClasses
-// IGNORE_BACKEND_FIR: JVM_IR
 
 inline class R(private val r: Long) {
     fun test() = ok()

compiler/testData/codegen/box/inlineClasses/contextsAndAccessors/accessPrivateStaticInlineClassCompanionMethod.kt

@@ -1,5 +1,4 @@
 // !LANGUAGE: +InlineClasses
-// IGNORE_BACKEND_FIR: JVM_IR
 // TARGET_BACKEND: JVM
 // WITH_RUNTIME
 

compiler/testData/codegen/box/inlineClasses/contextsAndAccessors/toPrivateCompanionFun.kt

@@ -1,5 +1,4 @@
 // !LANGUAGE: +InlineClasses
-// IGNORE_BACKEND_FIR: JVM_IR
 
 inline class R(private val r: Int) {
     fun test() = pf()

compiler/testData/codegen/box/inlineClasses/contextsAndAccessors/toPrivateCompanionVal.kt

@@ -1,5 +1,4 @@
 // !LANGUAGE: +InlineClasses
-// IGNORE_BACKEND_FIR: JVM_IR
 
 inline class R(private val r: Int) {
     fun test() = pv

compiler/testData/codegen/box/innerNested/kt6804.kt

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 class Outer {
     class Nested {
         fun fn() = s

compiler/testData/codegen/box/jvmStatic/importStaticMemberFromObject.kt

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 // TARGET_BACKEND: JVM
 
 // WITH_RUNTIME

compiler/testData/codegen/box/jvmStatic/privateMethod.kt

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 // TARGET_BACKEND: JVM
 
 // WITH_RUNTIME

compiler/testData/codegen/box/jvmStatic/syntheticAccessor.kt

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 // TARGET_BACKEND: JVM
 
 // WITH_RUNTIME

compiler/testData/codegen/box/objects/companionObjectAccess/kt27121.kt

@@ -1,5 +1,4 @@
 // !LANGUAGE: +ProperVisibilityForCompanionObjectInstanceField
-// IGNORE_BACKEND_FIR: JVM_IR
 
 interface A {
     fun test() = ok()

compiler/testData/codegen/box/objects/companionObjectAccess/kt27121_lv12.kt

@@ -1,5 +1,4 @@
 // !LANGUAGE: -ProperVisibilityForCompanionObjectInstanceField
-// IGNORE_BACKEND_FIR: JVM_IR
 
 interface A {
     fun test() = ok()

compiler/testData/codegen/box/objects/companionObjectAccess/kt27121_lv13.kt

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 interface A {
     fun test() = ok()
 

compiler/testData/codegen/box/objects/companionObjectAccess/privateCompanionObjectAccessedFromInitBlock.kt

@@ -1,5 +1,4 @@
 // !LANGUAGE: +ProperVisibilityForCompanionObjectInstanceField
-// IGNORE_BACKEND_FIR: JVM_IR
 
 class Outer {
     private companion object {

compiler/testData/codegen/box/objects/companionObjectAccess/privateCompanionObjectAccessedFromInitBlockOfNestedClass.kt

@@ -1,5 +1,4 @@
 // !LANGUAGE: +ProperVisibilityForCompanionObjectInstanceField
-// IGNORE_BACKEND_FIR: JVM_IR
 
 class Outer {
     private companion object {

compiler/testData/codegen/box/objects/companionObjectAccess/privateCompanionObjectAccessedFromNestedClass.kt

@@ -1,5 +1,4 @@
 // !LANGUAGE: +ProperVisibilityForCompanionObjectInstanceField
-// IGNORE_BACKEND_FIR: JVM_IR
 
 class Outer {
     private companion object {

compiler/testData/codegen/box/objects/companionObjectAccess/privateCompanionObjectAccessedFromNestedClassSeveralTimes.kt

@@ -1,5 +1,4 @@
 // !LANGUAGE: +ProperVisibilityForCompanionObjectInstanceField
-// IGNORE_BACKEND_FIR: JVM_IR
 
 class Outer {
     private companion object {

compiler/testData/codegen/box/objects/companionObjectAccess/protectedCompanionObjectAccessedFromNestedClass.kt

@@ -1,5 +1,4 @@
 // !LANGUAGE: +ProperVisibilityForCompanionObjectInstanceField
-// IGNORE_BACKEND_FIR: JVM_IR
 
 class Outer {
     protected companion object {

compiler/testData/codegen/box/objects/compoundAssignmentToPropertyImportedFromObject.kt

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 import Host.x
 
 object Host {

compiler/testData/codegen/box/objects/kt1047.kt

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 // IGNORE_BACKEND: JS_IR
 // TODO: muted automatically, investigate should it be ran for JS or not
 // IGNORE_BACKEND: JS, NATIVE

compiler/testData/codegen/box/objects/kt2675.kt

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 class A() {
 
     fun ok() = Foo.Bar.bar() + Foo.Bar.barv

compiler/testData/codegen/box/objects/nestedDerivedClassCallsProtectedFromCompanion.kt

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 open class A {
     companion object {
         protected fun foo() = "OK"

compiler/testData/codegen/box/secondaryConstructors/accessToCompanion.kt

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 internal class A(val result: Int) {
     companion object {
         fun foo(): Int = 1

compiler/testData/codegen/box/statics/syntheticAccessor.kt

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 object A {
     private val p = "OK";
 

compiler/testData/ir/irText/expressions/funImportedFromObject.fir.txt

@@ -1,32 +0,0 @@
-FILE fqName:test fileName:/funImportedFromObject.kt
-  CLASS OBJECT name:Host modality:FINAL visibility:public superTypes:[kotlin.Any]
-    $this: VALUE_PARAMETER INSTANCE_RECEIVER name:<this> type:test.Host
-    CONSTRUCTOR visibility:private <> () returnType:test.Host [primary]
-      BLOCK_BODY
-        DELEGATING_CONSTRUCTOR_CALL 'public constructor <init> () [primary] declared in kotlin.Any'
-        INSTANCE_INITIALIZER_CALL classDescriptor='CLASS OBJECT name:Host modality:FINAL visibility:public superTypes:[kotlin.Any]'
-    FUN name:foo visibility:public modality:FINAL <T> ($this:test.Host) returnType:kotlin.String [inline]
-      TYPE_PARAMETER name:T index:0 variance: superTypes:[kotlin.Any?]
-      $this: VALUE_PARAMETER name:<this> type:test.Host
-      BLOCK_BODY
-        RETURN type=kotlin.Nothing from='public final fun foo <T> (): kotlin.String [inline] declared in test.Host'
-          CONST String type=kotlin.String value="OK"
-    FUN FAKE_OVERRIDE name:equals visibility:public modality:OPEN <> ($this:kotlin.Any, other:kotlin.Any?) returnType:kotlin.Boolean [fake_override,operator]
-      overridden:
-        public open fun equals (other: kotlin.Any?): kotlin.Boolean [operator] declared in kotlin.Any
-      $this: VALUE_PARAMETER name:<this> type:kotlin.Any
-      VALUE_PARAMETER name:other index:0 type:kotlin.Any?
-    FUN FAKE_OVERRIDE name:hashCode visibility:public modality:OPEN <> ($this:kotlin.Any) returnType:kotlin.Int [fake_override]
-      overridden:
-        public open fun hashCode (): kotlin.Int declared in kotlin.Any
-      $this: VALUE_PARAMETER name:<this> type:kotlin.Any
-    FUN FAKE_OVERRIDE name:toString visibility:public modality:OPEN <> ($this:kotlin.Any) returnType:kotlin.String [fake_override]
-      overridden:
-        public open fun toString (): kotlin.String declared in kotlin.Any
-      $this: VALUE_PARAMETER name:<this> type:kotlin.Any
-  FUN name:test visibility:public modality:FINAL <> () returnType:kotlin.String
-    BLOCK_BODY
-      RETURN type=kotlin.Nothing from='public final fun test (): kotlin.String declared in test'
-        CALL 'public final fun foo <T> (): kotlin.String [inline] declared in test.Host' type=kotlin.String origin=null
-          <T>: kotlin.Any
-          $this: GET_VAR '<this>: test.Host declared in test.Host' type=test.Host origin=null

compiler/testData/ir/irText/expressions/funImportedFromObject.kt

@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 package test
 
 import test.Host.foo

compiler/testData/ir/irText/expressions/membersImportedFromObject.fir.txt

@@ -51,7 +51,7 @@ FILE fqName:<root> fileName:/membersImportedFromObject.kt
     FIELD PROPERTY_BACKING_FIELD name:test1 type:kotlin.Int visibility:private [final,static]
       EXPRESSION_BODY
         CALL 'public final fun foo (): kotlin.Int declared in <root>.A' type=kotlin.Int origin=null
-          $this: GET_VAR '<this>: <root>.A declared in <root>.A' type=<root>.A origin=null
+          $this: GET_OBJECT 'CLASS OBJECT name:A modality:FINAL visibility:public superTypes:[kotlin.Any]' type=<root>.A
     FUN DEFAULT_PROPERTY_ACCESSOR name:<get-test1> visibility:public modality:FINAL <> () returnType:kotlin.Int
       correspondingProperty: PROPERTY name:test1 visibility:public modality:FINAL [val]
       BLOCK_BODY
@@ -61,7 +61,7 @@ FILE fqName:<root> fileName:/membersImportedFromObject.kt
     FIELD PROPERTY_BACKING_FIELD name:test2 type:kotlin.Int visibility:private [final,static]
       EXPRESSION_BODY
         CALL 'public final fun <get-bar> (): kotlin.Int declared in <root>.A' type=kotlin.Int origin=null
-          $this: GET_VAR '<this>: <root>.A declared in <root>.A' type=<root>.A origin=null
+          $this: GET_OBJECT 'CLASS OBJECT name:A modality:FINAL visibility:public superTypes:[kotlin.Any]' type=<root>.A
     FUN DEFAULT_PROPERTY_ACCESSOR name:<get-test2> visibility:public modality:FINAL <> () returnType:kotlin.Int
       correspondingProperty: PROPERTY name:test2 visibility:public modality:FINAL [val]
       BLOCK_BODY
@@ -71,7 +71,7 @@ FILE fqName:<root> fileName:/membersImportedFromObject.kt
     FIELD PROPERTY_BACKING_FIELD name:test3 type:kotlin.Int visibility:private [final,static]
       EXPRESSION_BODY
         CALL 'public final fun fooExt (): kotlin.Int declared in <root>.A' type=kotlin.Int origin=null
-          $this: GET_VAR '<this>: <root>.A declared in <root>.A' type=<root>.A origin=null
+          $this: CONST Int type=kotlin.Int value=1
     FUN DEFAULT_PROPERTY_ACCESSOR name:<get-test3> visibility:public modality:FINAL <> () returnType:kotlin.Int
       correspondingProperty: PROPERTY name:test3 visibility:public modality:FINAL [val]
       BLOCK_BODY
@@ -81,7 +81,7 @@ FILE fqName:<root> fileName:/membersImportedFromObject.kt
     FIELD PROPERTY_BACKING_FIELD name:test4 type:kotlin.Int visibility:private [final,static]
       EXPRESSION_BODY
         CALL 'public final fun <get-barExt> (): kotlin.Int declared in <root>.A' type=kotlin.Int origin=null
-          $this: GET_VAR '<this>: <root>.A declared in <root>.A' type=<root>.A origin=null
+          $this: CONST Int type=kotlin.Int value=1
     FUN DEFAULT_PROPERTY_ACCESSOR name:<get-test4> visibility:public modality:FINAL <> () returnType:kotlin.Int
       correspondingProperty: PROPERTY name:test4 visibility:public modality:FINAL [val]
       BLOCK_BODY

compiler/testData/ir/irText/expressions/objectReference.fir.txt

@@ -49,10 +49,9 @@ FILE fqName:<root> fileName:/objectReference.kt
       ANONYMOUS_INITIALIZER isStatic=false
         BLOCK_BODY
           SET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:counter type:kotlin.Int visibility:private' type=kotlin.Unit origin=null
-            receiver: GET_VAR '<this>: <root>.Z declared in <root>.Z' type=<root>.Z origin=null
             value: CONST Int type=kotlin.Int value=1
           CALL 'public final fun foo (): kotlin.Unit declared in <root>.Z' type=kotlin.Unit origin=null
-            $this: GET_VAR '<this>: <root>.Z declared in <root>.Z' type=<root>.Z origin=null
+            $this: GET_OBJECT 'CLASS OBJECT name:Z modality:FINAL visibility:public superTypes:[kotlin.Any]' type=<root>.Z
           SET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:counter type:kotlin.Int visibility:private' type=kotlin.Unit origin=null
             receiver: GET_OBJECT 'CLASS OBJECT name:Z modality:FINAL visibility:public superTypes:[kotlin.Any]' type=<root>.Z
             value: CONST Int type=kotlin.Int value=1
@@ -62,10 +61,9 @@ FILE fqName:<root> fileName:/objectReference.kt
         $this: VALUE_PARAMETER name:<this> type:<root>.Z.Nested
         BLOCK_BODY
           SET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:counter type:kotlin.Int visibility:private' type=kotlin.Unit origin=null
-            receiver: GET_VAR '<this>: <root>.Z declared in <root>.Z' type=<root>.Z origin=null
             value: CONST Int type=kotlin.Int value=1
           CALL 'public final fun foo (): kotlin.Unit declared in <root>.Z' type=kotlin.Unit origin=null
-            $this: GET_VAR '<this>: <root>.Z declared in <root>.Z' type=<root>.Z origin=null
+            $this: GET_OBJECT 'CLASS OBJECT name:Z modality:FINAL visibility:public superTypes:[kotlin.Any]' type=<root>.Z
           SET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:counter type:kotlin.Int visibility:private' type=kotlin.Unit origin=null
             receiver: GET_OBJECT 'CLASS OBJECT name:Z modality:FINAL visibility:public superTypes:[kotlin.Any]' type=<root>.Z
             value: CONST Int type=kotlin.Int value=1
@@ -168,10 +166,10 @@ FILE fqName:<root> fileName:/objectReference.kt
     $receiver: VALUE_PARAMETER name:<this> type:<root>.Z
     BLOCK_BODY
       SET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:counter type:kotlin.Int visibility:private' type=kotlin.Unit origin=null
-        receiver: GET_VAR '<this>: <root>.Z declared in <root>.Z' type=<root>.Z origin=null
+        receiver: GET_VAR '<this>: <root>.Z declared in <root>.test' type=<root>.Z origin=null
         value: CONST Int type=kotlin.Int value=1
       CALL 'public final fun foo (): kotlin.Unit declared in <root>.Z' type=kotlin.Unit origin=null
-        $this: GET_VAR '<this>: <root>.Z declared in <root>.Z' type=<root>.Z origin=null
+        $this: GET_VAR '<this>: <root>.Z declared in <root>.test' type=<root>.Z origin=null
       SET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:counter type:kotlin.Int visibility:private' type=kotlin.Unit origin=null
         receiver: GET_OBJECT 'CLASS OBJECT name:Z modality:FINAL visibility:public superTypes:[kotlin.Any]' type=<root>.Z
         value: CONST Int type=kotlin.Int value=1

compiler/testData/ir/irText/singletons/companion.fir.txt

@@ -1,47 +0,0 @@
-FILE fqName:<root> fileName:/companion.kt
-  CLASS CLASS name:Z modality:FINAL visibility:public superTypes:[kotlin.Any]
-    $this: VALUE_PARAMETER INSTANCE_RECEIVER name:<this> type:<root>.Z
-    CONSTRUCTOR visibility:public <> () returnType:<root>.Z [primary]
-      BLOCK_BODY
-        DELEGATING_CONSTRUCTOR_CALL 'public constructor <init> () [primary] declared in kotlin.Any'
-        INSTANCE_INITIALIZER_CALL classDescriptor='CLASS CLASS name:Z modality:FINAL visibility:public superTypes:[kotlin.Any]'
-    FUN name:test2 visibility:public modality:FINAL <> ($this:<root>.Z) returnType:kotlin.Unit
-      $this: VALUE_PARAMETER name:<this> type:<root>.Z
-      BLOCK_BODY
-        CALL 'public final fun test (): kotlin.Unit declared in <root>.Z.Companion' type=kotlin.Unit origin=null
-          $this: GET_VAR '<this>: <root>.Z.Companion declared in <root>.Z.Companion' type=<root>.Z.Companion origin=null
-    CLASS OBJECT name:Companion modality:FINAL visibility:public [companion] superTypes:[kotlin.Any]
-      $this: VALUE_PARAMETER INSTANCE_RECEIVER name:<this> type:<root>.Z.Companion
-      CONSTRUCTOR visibility:private <> () returnType:<root>.Z.Companion [primary]
-        BLOCK_BODY
-          DELEGATING_CONSTRUCTOR_CALL 'public constructor <init> () [primary] declared in kotlin.Any'
-          INSTANCE_INITIALIZER_CALL classDescriptor='CLASS OBJECT name:Companion modality:FINAL visibility:public [companion] superTypes:[kotlin.Any]'
-      FUN name:test visibility:public modality:FINAL <> ($this:<root>.Z.Companion) returnType:kotlin.Unit
-        $this: VALUE_PARAMETER name:<this> type:<root>.Z.Companion
-        BLOCK_BODY
-      FUN FAKE_OVERRIDE name:equals visibility:public modality:OPEN <> ($this:kotlin.Any, other:kotlin.Any?) returnType:kotlin.Boolean [fake_override,operator]
-        overridden:
-          public open fun equals (other: kotlin.Any?): kotlin.Boolean [operator] declared in kotlin.Any
-        $this: VALUE_PARAMETER name:<this> type:kotlin.Any
-        VALUE_PARAMETER name:other index:0 type:kotlin.Any?
-      FUN FAKE_OVERRIDE name:hashCode visibility:public modality:OPEN <> ($this:kotlin.Any) returnType:kotlin.Int [fake_override]
-        overridden:
-          public open fun hashCode (): kotlin.Int declared in kotlin.Any
-        $this: VALUE_PARAMETER name:<this> type:kotlin.Any
-      FUN FAKE_OVERRIDE name:toString visibility:public modality:OPEN <> ($this:kotlin.Any) returnType:kotlin.String [fake_override]
-        overridden:
-          public open fun toString (): kotlin.String declared in kotlin.Any
-        $this: VALUE_PARAMETER name:<this> type:kotlin.Any
-    FUN FAKE_OVERRIDE name:equals visibility:public modality:OPEN <> ($this:kotlin.Any, other:kotlin.Any?) returnType:kotlin.Boolean [fake_override,operator]
-      overridden:
-        public open fun equals (other: kotlin.Any?): kotlin.Boolean [operator] declared in kotlin.Any
-      $this: VALUE_PARAMETER name:<this> type:kotlin.Any
-      VALUE_PARAMETER name:other index:0 type:kotlin.Any?
-    FUN FAKE_OVERRIDE name:hashCode visibility:public modality:OPEN <> ($this:kotlin.Any) returnType:kotlin.Int [fake_override]
-      overridden:
-        public open fun hashCode (): kotlin.Int declared in kotlin.Any
-      $this: VALUE_PARAMETER name:<this> type:kotlin.Any
-    FUN FAKE_OVERRIDE name:toString visibility:public modality:OPEN <> ($this:kotlin.Any) returnType:kotlin.String [fake_override]
-      overridden:
-        public open fun toString (): kotlin.String declared in kotlin.Any
-      $this: VALUE_PARAMETER name:<this> type:kotlin.Any

compiler/testData/ir/irText/singletons/companion.kt

@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 class Z {
 
     fun test2() {

compiler/testData/ir/irText/singletons/object.fir.txt

@@ -1,47 +0,0 @@
-FILE fqName:<root> fileName:/object.kt
-  CLASS OBJECT name:Z modality:FINAL visibility:public superTypes:[kotlin.Any]
-    $this: VALUE_PARAMETER INSTANCE_RECEIVER name:<this> type:<root>.Z
-    CONSTRUCTOR visibility:private <> () returnType:<root>.Z [primary]
-      BLOCK_BODY
-        DELEGATING_CONSTRUCTOR_CALL 'public constructor <init> () [primary] declared in kotlin.Any'
-        INSTANCE_INITIALIZER_CALL classDescriptor='CLASS OBJECT name:Z modality:FINAL visibility:public superTypes:[kotlin.Any]'
-    FUN name:test visibility:public modality:FINAL <> ($this:<root>.Z) returnType:kotlin.Unit
-      $this: VALUE_PARAMETER name:<this> type:<root>.Z
-      BLOCK_BODY
-    CLASS CLASS name:A modality:FINAL visibility:public superTypes:[kotlin.Any]
-      $this: VALUE_PARAMETER INSTANCE_RECEIVER name:<this> type:<root>.Z.A
-      CONSTRUCTOR visibility:public <> () returnType:<root>.Z.A [primary]
-        BLOCK_BODY
-          DELEGATING_CONSTRUCTOR_CALL 'public constructor <init> () [primary] declared in kotlin.Any'
-          INSTANCE_INITIALIZER_CALL classDescriptor='CLASS CLASS name:A modality:FINAL visibility:public superTypes:[kotlin.Any]'
-      FUN name:test2 visibility:public modality:FINAL <> ($this:<root>.Z.A) returnType:kotlin.Unit
-        $this: VALUE_PARAMETER name:<this> type:<root>.Z.A
-        BLOCK_BODY
-          CALL 'public final fun test (): kotlin.Unit declared in <root>.Z' type=kotlin.Unit origin=null
-            $this: GET_VAR '<this>: <root>.Z declared in <root>.Z' type=<root>.Z origin=null
-      FUN FAKE_OVERRIDE name:equals visibility:public modality:OPEN <> ($this:kotlin.Any, other:kotlin.Any?) returnType:kotlin.Boolean [fake_override,operator]
-        overridden:
-          public open fun equals (other: kotlin.Any?): kotlin.Boolean [operator] declared in kotlin.Any
-        $this: VALUE_PARAMETER name:<this> type:kotlin.Any
-        VALUE_PARAMETER name:other index:0 type:kotlin.Any?
-      FUN FAKE_OVERRIDE name:hashCode visibility:public modality:OPEN <> ($this:kotlin.Any) returnType:kotlin.Int [fake_override]
-        overridden:
-          public open fun hashCode (): kotlin.Int declared in kotlin.Any
-        $this: VALUE_PARAMETER name:<this> type:kotlin.Any
-      FUN FAKE_OVERRIDE name:toString visibility:public modality:OPEN <> ($this:kotlin.Any) returnType:kotlin.String [fake_override]
-        overridden:
-          public open fun toString (): kotlin.String declared in kotlin.Any
-        $this: VALUE_PARAMETER name:<this> type:kotlin.Any
-    FUN FAKE_OVERRIDE name:equals visibility:public modality:OPEN <> ($this:kotlin.Any, other:kotlin.Any?) returnType:kotlin.Boolean [fake_override,operator]
-      overridden:
-        public open fun equals (other: kotlin.Any?): kotlin.Boolean [operator] declared in kotlin.Any
-      $this: VALUE_PARAMETER name:<this> type:kotlin.Any
-      VALUE_PARAMETER name:other index:0 type:kotlin.Any?
-    FUN FAKE_OVERRIDE name:hashCode visibility:public modality:OPEN <> ($this:kotlin.Any) returnType:kotlin.Int [fake_override]
-      overridden:
-        public open fun hashCode (): kotlin.Int declared in kotlin.Any
-      $this: VALUE_PARAMETER name:<this> type:kotlin.Any
-    FUN FAKE_OVERRIDE name:toString visibility:public modality:OPEN <> ($this:kotlin.Any) returnType:kotlin.String [fake_override]
-      overridden:
-        public open fun toString (): kotlin.String declared in kotlin.Any
-      $this: VALUE_PARAMETER name:<this> type:kotlin.Any

compiler/testData/ir/irText/singletons/object.kt

@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 object Z {
 
     fun test() {}