[FIR] Look for annotations generated by backend based on declaration-site session

Test dump for klib does not correlate to real case (CLI compilation of
  JS or Native), because for some reason KLib facade in MPP scenario
  uses session/module of each specific file, instand of session for
  leaf platform module
In CLI scenario only one session is used, so annotations are generated
  properly

^KT-61833 Fixed

compiler/fir/fir2ir/src/org/jetbrains/kotlin/fir/backend/Fir2IrAnnotationsFromPluginRegistrar.kt

@@ -6,6 +6,7 @@
 package org.jetbrains.kotlin.fir.backend
 
 import org.jetbrains.kotlin.backend.common.extensions.IrAnnotationsFromPluginRegistrar
+import org.jetbrains.kotlin.fir.FirSession
 import org.jetbrains.kotlin.fir.declarations.*
 import org.jetbrains.kotlin.fir.declarations.utils.classId
 import org.jetbrains.kotlin.fir.expressions.FirAnnotation
@@ -65,8 +66,6 @@ class Fir2IrAnnotationsFromPluginRegistrar(private val components: Fir2IrCompone
     }
 
     private inner class Provider : FirAdditionalMetadataAnnotationsProvider() {
-        private val session = components.session
-
         override fun findGeneratedAnnotationsFor(declaration: FirDeclaration): List<FirAnnotation> {
             val irAnnotations = extractGeneratedIrDeclarations(declaration).takeUnless { it.isEmpty() } ?: return emptyList()
             return irAnnotations.map { it.toFirAnnotation() }
@@ -86,15 +85,19 @@ class Fir2IrAnnotationsFromPluginRegistrar(private val components: Fir2IrCompone
 
         private fun FirDeclaration.containingFile(): FirFile? {
             if (this is FirFile) return this
-            val topmostParent = topmostParent()
+            // In MPP scenario containing session of declaration may differ from the main session of the module
-            return components.session.firProvider.getContainingFile(topmostParent.symbol)
+            //  (if this declaration came from some common module), so in order to get the proper containing file,
+            //  we need to use the original session of the declaration
+            val containingSession = moduleData.session
+            val topmostParent = topmostParent(containingSession)
+            return containingSession.firProvider.getContainingFile(topmostParent.symbol)
         }
 
-        private fun FirDeclaration.topmostParent(): FirDeclaration {
+        private fun FirDeclaration.topmostParent(session: FirSession): FirDeclaration {
             return when (this) {
                 is FirClassLikeDeclaration -> runIf(!classId.isLocal) { classId.topmostParentClassId.toSymbol(session)?.fir }
-                is FirTypeParameter -> containingDeclarationSymbol.fir.topmostParent()
+                is FirTypeParameter -> containingDeclarationSymbol.fir.topmostParent(session)
-                is FirValueParameter -> containingFunctionSymbol.fir.topmostParent()
+                is FirValueParameter -> containingFunctionSymbol.fir.topmostParent(session)
                 is FirCallableDeclaration -> symbol.callableId.classId
                     ?.takeIf { !it.isLocal }
                     ?.topmostParentClassId

plugins/fir-plugin-prototype/src/org/jetbrains/kotlin/ir/plugin/TransformerForAddingAnnotations.kt

@@ -30,6 +30,7 @@ class TransformerForAddingAnnotations(val context: IrPluginContext) : IrElementV
         private val markerAnnotationFqName = FqName("org.jetbrains.kotlin.fir.plugin.AddAnnotations")
         private val annotationToAddId = ClassId(FqName("org.jetbrains.kotlin.fir.plugin"), Name.identifier("AnnotationToAdd"))
         private val annotationToAddFqName = annotationToAddId.asSingleFqName()
+        private const val prefixNameForClass = "VerySpecificName"
     }
 
     private val annotationsAdder = AnnotationsAdder()
@@ -43,7 +44,7 @@ class TransformerForAddingAnnotations(val context: IrPluginContext) : IrElementV
     }
 
     override fun visitClass(declaration: IrClass) {
-        if (declaration.hasAnnotation(markerAnnotationFqName)) {
+        if (declaration.hasAnnotation(markerAnnotationFqName) || declaration.name.asString().startsWith(prefixNameForClass)) {
             declaration.acceptVoid(annotationsAdder)
         }
     }

plugins/fir-plugin-prototype/testData/firLoadK2Compiled/annotationsGeneratedInBackend_MPP.fir.k2.jvm.txt

@@ -0,0 +1,29 @@
+@R|org/jetbrains/kotlin/fir/plugin/AnnotationToAdd|(booleanValue = Boolean(true), byteValue = Byte(1), charValue = Char(c), doubleValue = Double(4.2), floatValue = Float(2.4), intValue = Int(42), longValue = Long(24), shortValue = Short(7), stringValue = String(OK)) public final class VerySpecificNameInCommon : R|kotlin/Any| {
+    @R|org/jetbrains/kotlin/fir/plugin/AnnotationToAdd|(booleanValue = Boolean(true), byteValue = Byte(1), charValue = Char(c), doubleValue = Double(4.2), floatValue = Float(2.4), intValue = Int(42), longValue = Long(24), shortValue = Short(7), stringValue = String(OK)) public final fun foo(): R|kotlin/Unit|
+
+    @PROPERTY:R|org/jetbrains/kotlin/fir/plugin/AnnotationToAdd|(booleanValue = Boolean(true), byteValue = Byte(1), charValue = Char(c), doubleValue = Double(4.2), floatValue = Float(2.4), intValue = Int(42), longValue = Long(24), shortValue = Short(7), stringValue = String(OK)) field:@FIELD:R|org/jetbrains/kotlin/fir/plugin/AnnotationToAdd|(booleanValue = Boolean(true), byteValue = Byte(1), charValue = Char(c), doubleValue = Double(4.2), floatValue = Float(2.4), intValue = Int(42), longValue = Long(24), shortValue = Short(7), stringValue = String(OK)) public final val x: R|kotlin/Int|
+        @R|org/jetbrains/kotlin/fir/plugin/AnnotationToAdd|(booleanValue = Boolean(true), byteValue = Byte(1), charValue = Char(c), doubleValue = Double(4.2), floatValue = Float(2.4), intValue = Int(42), longValue = Long(24), shortValue = Short(7), stringValue = String(OK)) public get(): R|kotlin/Int|
+
+    @R|org/jetbrains/kotlin/fir/plugin/AnnotationToAdd|(booleanValue = Boolean(true), byteValue = Byte(1), charValue = Char(c), doubleValue = Double(4.2), floatValue = Float(2.4), intValue = Int(42), longValue = Long(24), shortValue = Short(7), stringValue = String(OK)) public constructor(@R|org/jetbrains/kotlin/fir/plugin/AnnotationToAdd|(booleanValue = Boolean(true), byteValue = Byte(1), charValue = Char(c), doubleValue = Double(4.2), floatValue = Float(2.4), intValue = Int(42), longValue = Long(24), shortValue = Short(7), stringValue = String(OK)) x: R|kotlin/Int|): R|test/VerySpecificNameInCommon|
+
+    @R|org/jetbrains/kotlin/fir/plugin/AnnotationToAdd|(booleanValue = Boolean(true), byteValue = Byte(1), charValue = Char(c), doubleValue = Double(4.2), floatValue = Float(2.4), intValue = Int(42), longValue = Long(24), shortValue = Short(7), stringValue = String(OK)) public final class Derived : R|kotlin/Any| {
+        @R|org/jetbrains/kotlin/fir/plugin/AnnotationToAdd|(booleanValue = Boolean(true), byteValue = Byte(1), charValue = Char(c), doubleValue = Double(4.2), floatValue = Float(2.4), intValue = Int(42), longValue = Long(24), shortValue = Short(7), stringValue = String(OK)) public constructor(): R|test/VerySpecificNameInCommon.Derived|
+
+    }
+
+}
+
+@R|org/jetbrains/kotlin/fir/plugin/AnnotationToAdd|(booleanValue = Boolean(true), byteValue = Byte(1), charValue = Char(c), doubleValue = Double(4.2), floatValue = Float(2.4), intValue = Int(42), longValue = Long(24), shortValue = Short(7), stringValue = String(OK)) public final class VerySpecificNameInPlatform : R|kotlin/Any| {
+    @R|org/jetbrains/kotlin/fir/plugin/AnnotationToAdd|(booleanValue = Boolean(true), byteValue = Byte(1), charValue = Char(c), doubleValue = Double(4.2), floatValue = Float(2.4), intValue = Int(42), longValue = Long(24), shortValue = Short(7), stringValue = String(OK)) public final fun foo(): R|kotlin/Unit|
+
+    @PROPERTY:R|org/jetbrains/kotlin/fir/plugin/AnnotationToAdd|(booleanValue = Boolean(true), byteValue = Byte(1), charValue = Char(c), doubleValue = Double(4.2), floatValue = Float(2.4), intValue = Int(42), longValue = Long(24), shortValue = Short(7), stringValue = String(OK)) field:@FIELD:R|org/jetbrains/kotlin/fir/plugin/AnnotationToAdd|(booleanValue = Boolean(true), byteValue = Byte(1), charValue = Char(c), doubleValue = Double(4.2), floatValue = Float(2.4), intValue = Int(42), longValue = Long(24), shortValue = Short(7), stringValue = String(OK)) public final val x: R|kotlin/Int|
+        @R|org/jetbrains/kotlin/fir/plugin/AnnotationToAdd|(booleanValue = Boolean(true), byteValue = Byte(1), charValue = Char(c), doubleValue = Double(4.2), floatValue = Float(2.4), intValue = Int(42), longValue = Long(24), shortValue = Short(7), stringValue = String(OK)) public get(): R|kotlin/Int|
+
+    @R|org/jetbrains/kotlin/fir/plugin/AnnotationToAdd|(booleanValue = Boolean(true), byteValue = Byte(1), charValue = Char(c), doubleValue = Double(4.2), floatValue = Float(2.4), intValue = Int(42), longValue = Long(24), shortValue = Short(7), stringValue = String(OK)) public constructor(@R|org/jetbrains/kotlin/fir/plugin/AnnotationToAdd|(booleanValue = Boolean(true), byteValue = Byte(1), charValue = Char(c), doubleValue = Double(4.2), floatValue = Float(2.4), intValue = Int(42), longValue = Long(24), shortValue = Short(7), stringValue = String(OK)) x: R|kotlin/Int|): R|test/VerySpecificNameInPlatform|
+
+    @R|org/jetbrains/kotlin/fir/plugin/AnnotationToAdd|(booleanValue = Boolean(true), byteValue = Byte(1), charValue = Char(c), doubleValue = Double(4.2), floatValue = Float(2.4), intValue = Int(42), longValue = Long(24), shortValue = Short(7), stringValue = String(OK)) public final class Derived : R|kotlin/Any| {
+        @R|org/jetbrains/kotlin/fir/plugin/AnnotationToAdd|(booleanValue = Boolean(true), byteValue = Byte(1), charValue = Char(c), doubleValue = Double(4.2), floatValue = Float(2.4), intValue = Int(42), longValue = Long(24), shortValue = Short(7), stringValue = String(OK)) public constructor(): R|test/VerySpecificNameInPlatform.Derived|
+
+    }
+
+}

plugins/fir-plugin-prototype/testData/firLoadK2Compiled/annotationsGeneratedInBackend_MPP.fir.k2.klib.txt

@@ -0,0 +1,29 @@
+public final class VerySpecificNameInCommon : R|kotlin/Any| {
+    public final fun foo(): R|kotlin/Unit|
+
+    public final val x: R|kotlin/Int|
+        public get(): R|kotlin/Int|
+
+    public constructor(x: R|kotlin/Int|): R|test/VerySpecificNameInCommon|
+
+    public final class Derived : R|kotlin/Any| {
+        public constructor(): R|test/VerySpecificNameInCommon.Derived|
+
+    }
+
+}
+
+@R|org/jetbrains/kotlin/fir/plugin/AnnotationToAdd|(booleanValue = Boolean(true), byteValue = Byte(1), charValue = Char(c), doubleValue = Double(4.2), floatValue = Float(2.4), intValue = Int(42), longValue = Long(24), shortValue = Short(7), stringValue = String(OK)) @R|org/jetbrains/kotlin/fir/plugin/AnnotationToAdd|(booleanValue = Boolean(true), byteValue = Byte(1), charValue = Char(c), doubleValue = Double(4.2), floatValue = Float(2.4), intValue = Int(42), longValue = Long(24), shortValue = Short(7), stringValue = String(OK)) public final class VerySpecificNameInPlatform : R|kotlin/Any| {
+    @R|org/jetbrains/kotlin/fir/plugin/AnnotationToAdd|(booleanValue = Boolean(true), byteValue = Byte(1), charValue = Char(c), doubleValue = Double(4.2), floatValue = Float(2.4), intValue = Int(42), longValue = Long(24), shortValue = Short(7), stringValue = String(OK)) @R|org/jetbrains/kotlin/fir/plugin/AnnotationToAdd|(booleanValue = Boolean(true), byteValue = Byte(1), charValue = Char(c), doubleValue = Double(4.2), floatValue = Float(2.4), intValue = Int(42), longValue = Long(24), shortValue = Short(7), stringValue = String(OK)) public final fun foo(): R|kotlin/Unit|
+
+    @PROPERTY:R|org/jetbrains/kotlin/fir/plugin/AnnotationToAdd|(booleanValue = Boolean(true), byteValue = Byte(1), charValue = Char(c), doubleValue = Double(4.2), floatValue = Float(2.4), intValue = Int(42), longValue = Long(24), shortValue = Short(7), stringValue = String(OK)) @PROPERTY:R|org/jetbrains/kotlin/fir/plugin/AnnotationToAdd|(booleanValue = Boolean(true), byteValue = Byte(1), charValue = Char(c), doubleValue = Double(4.2), floatValue = Float(2.4), intValue = Int(42), longValue = Long(24), shortValue = Short(7), stringValue = String(OK)) @PROPERTY:R|org/jetbrains/kotlin/fir/plugin/AnnotationToAdd|(booleanValue = Boolean(true), byteValue = Byte(1), charValue = Char(c), doubleValue = Double(4.2), floatValue = Float(2.4), intValue = Int(42), longValue = Long(24), shortValue = Short(7), stringValue = String(OK)) @PROPERTY:R|org/jetbrains/kotlin/fir/plugin/AnnotationToAdd|(booleanValue = Boolean(true), byteValue = Byte(1), charValue = Char(c), doubleValue = Double(4.2), floatValue = Float(2.4), intValue = Int(42), longValue = Long(24), shortValue = Short(7), stringValue = String(OK)) @PROPERTY:R|org/jetbrains/kotlin/fir/plugin/AnnotationToAdd|(booleanValue = Boolean(true), byteValue = Byte(1), charValue = Char(c), doubleValue = Double(4.2), floatValue = Float(2.4), intValue = Int(42), longValue = Long(24), shortValue = Short(7), stringValue = String(OK)) public final val x: R|kotlin/Int|
+        @PROPERTY_GETTER:R|org/jetbrains/kotlin/fir/plugin/AnnotationToAdd|(booleanValue = Boolean(true), byteValue = Byte(1), charValue = Char(c), doubleValue = Double(4.2), floatValue = Float(2.4), intValue = Int(42), longValue = Long(24), shortValue = Short(7), stringValue = String(OK)) @PROPERTY_GETTER:R|org/jetbrains/kotlin/fir/plugin/AnnotationToAdd|(booleanValue = Boolean(true), byteValue = Byte(1), charValue = Char(c), doubleValue = Double(4.2), floatValue = Float(2.4), intValue = Int(42), longValue = Long(24), shortValue = Short(7), stringValue = String(OK)) @PROPERTY_GETTER:R|org/jetbrains/kotlin/fir/plugin/AnnotationToAdd|(booleanValue = Boolean(true), byteValue = Byte(1), charValue = Char(c), doubleValue = Double(4.2), floatValue = Float(2.4), intValue = Int(42), longValue = Long(24), shortValue = Short(7), stringValue = String(OK)) @PROPERTY_GETTER:R|org/jetbrains/kotlin/fir/plugin/AnnotationToAdd|(booleanValue = Boolean(true), byteValue = Byte(1), charValue = Char(c), doubleValue = Double(4.2), floatValue = Float(2.4), intValue = Int(42), longValue = Long(24), shortValue = Short(7), stringValue = String(OK)) @PROPERTY_GETTER:R|org/jetbrains/kotlin/fir/plugin/AnnotationToAdd|(booleanValue = Boolean(true), byteValue = Byte(1), charValue = Char(c), doubleValue = Double(4.2), floatValue = Float(2.4), intValue = Int(42), longValue = Long(24), shortValue = Short(7), stringValue = String(OK)) public get(): R|kotlin/Int|
+
+    @R|org/jetbrains/kotlin/fir/plugin/AnnotationToAdd|(booleanValue = Boolean(true), byteValue = Byte(1), charValue = Char(c), doubleValue = Double(4.2), floatValue = Float(2.4), intValue = Int(42), longValue = Long(24), shortValue = Short(7), stringValue = String(OK)) public constructor(@R|org/jetbrains/kotlin/fir/plugin/AnnotationToAdd|(booleanValue = Boolean(true), byteValue = Byte(1), charValue = Char(c), doubleValue = Double(4.2), floatValue = Float(2.4), intValue = Int(42), longValue = Long(24), shortValue = Short(7), stringValue = String(OK)) @R|org/jetbrains/kotlin/fir/plugin/AnnotationToAdd|(booleanValue = Boolean(true), byteValue = Byte(1), charValue = Char(c), doubleValue = Double(4.2), floatValue = Float(2.4), intValue = Int(42), longValue = Long(24), shortValue = Short(7), stringValue = String(OK)) @R|org/jetbrains/kotlin/fir/plugin/AnnotationToAdd|(booleanValue = Boolean(true), byteValue = Byte(1), charValue = Char(c), doubleValue = Double(4.2), floatValue = Float(2.4), intValue = Int(42), longValue = Long(24), shortValue = Short(7), stringValue = String(OK)) @R|org/jetbrains/kotlin/fir/plugin/AnnotationToAdd|(booleanValue = Boolean(true), byteValue = Byte(1), charValue = Char(c), doubleValue = Double(4.2), floatValue = Float(2.4), intValue = Int(42), longValue = Long(24), shortValue = Short(7), stringValue = String(OK)) @R|org/jetbrains/kotlin/fir/plugin/AnnotationToAdd|(booleanValue = Boolean(true), byteValue = Byte(1), charValue = Char(c), doubleValue = Double(4.2), floatValue = Float(2.4), intValue = Int(42), longValue = Long(24), shortValue = Short(7), stringValue = String(OK)) x: R|kotlin/Int|): R|test/VerySpecificNameInPlatform|
+
+    @R|org/jetbrains/kotlin/fir/plugin/AnnotationToAdd|(booleanValue = Boolean(true), byteValue = Byte(1), charValue = Char(c), doubleValue = Double(4.2), floatValue = Float(2.4), intValue = Int(42), longValue = Long(24), shortValue = Short(7), stringValue = String(OK)) @R|org/jetbrains/kotlin/fir/plugin/AnnotationToAdd|(booleanValue = Boolean(true), byteValue = Byte(1), charValue = Char(c), doubleValue = Double(4.2), floatValue = Float(2.4), intValue = Int(42), longValue = Long(24), shortValue = Short(7), stringValue = String(OK)) @R|org/jetbrains/kotlin/fir/plugin/AnnotationToAdd|(booleanValue = Boolean(true), byteValue = Byte(1), charValue = Char(c), doubleValue = Double(4.2), floatValue = Float(2.4), intValue = Int(42), longValue = Long(24), shortValue = Short(7), stringValue = String(OK)) public final class Derived : R|kotlin/Any| {
+        @R|org/jetbrains/kotlin/fir/plugin/AnnotationToAdd|(booleanValue = Boolean(true), byteValue = Byte(1), charValue = Char(c), doubleValue = Double(4.2), floatValue = Float(2.4), intValue = Int(42), longValue = Long(24), shortValue = Short(7), stringValue = String(OK)) @R|org/jetbrains/kotlin/fir/plugin/AnnotationToAdd|(booleanValue = Boolean(true), byteValue = Byte(1), charValue = Char(c), doubleValue = Double(4.2), floatValue = Float(2.4), intValue = Int(42), longValue = Long(24), shortValue = Short(7), stringValue = String(OK)) @R|org/jetbrains/kotlin/fir/plugin/AnnotationToAdd|(booleanValue = Boolean(true), byteValue = Byte(1), charValue = Char(c), doubleValue = Double(4.2), floatValue = Float(2.4), intValue = Int(42), longValue = Long(24), shortValue = Short(7), stringValue = String(OK)) public constructor(): R|test/VerySpecificNameInPlatform.Derived|
+
+    }
+
+}

plugins/fir-plugin-prototype/testData/firLoadK2Compiled/annotationsGeneratedInBackend_MPP.fir.kt.txt

@@ -0,0 +1,107 @@
+// MODULE: <common>
+// FILE: module_common_annotationsGeneratedInBackend_MPP.kt
+package test
+
+@AnnotationToAdd(booleanValue = true, byteValue = 1B, charValue = 'c', doubleValue = 4.2, floatValue = 2.4F, intValue = 42, longValue = 24L, shortValue = 7S, stringValue = "OK")
+class VerySpecificNameInCommon {
+  @AnnotationToAdd(booleanValue = true, byteValue = 1B, charValue = 'c', doubleValue = 4.2, floatValue = 2.4F, intValue = 42, longValue = 24L, shortValue = 7S, stringValue = "OK")
+  constructor(@AnnotationToAdd(booleanValue = true, byteValue = 1B, charValue = 'c', doubleValue = 4.2, floatValue = 2.4F, intValue = 42, longValue = 24L, shortValue = 7S, stringValue = "OK") x: Int) /* primary */ {
+    super/*Any*/()
+    /* <init>() */
+
+  }
+
+  @AnnotationToAdd(booleanValue = true, byteValue = 1B, charValue = 'c', doubleValue = 4.2, floatValue = 2.4F, intValue = 42, longValue = 24L, shortValue = 7S, stringValue = "OK")
+  val x: Int
+    field = x
+    @AnnotationToAdd(booleanValue = true, byteValue = 1B, charValue = 'c', doubleValue = 4.2, floatValue = 2.4F, intValue = 42, longValue = 24L, shortValue = 7S, stringValue = "OK")
+    get
+
+  @AnnotationToAdd(booleanValue = true, byteValue = 1B, charValue = 'c', doubleValue = 4.2, floatValue = 2.4F, intValue = 42, longValue = 24L, shortValue = 7S, stringValue = "OK")
+  fun foo() {
+  }
+
+  @AnnotationToAdd(booleanValue = true, byteValue = 1B, charValue = 'c', doubleValue = 4.2, floatValue = 2.4F, intValue = 42, longValue = 24L, shortValue = 7S, stringValue = "OK")
+  class Derived {
+    @AnnotationToAdd(booleanValue = true, byteValue = 1B, charValue = 'c', doubleValue = 4.2, floatValue = 2.4F, intValue = 42, longValue = 24L, shortValue = 7S, stringValue = "OK")
+    constructor() /* primary */ {
+      super/*Any*/()
+      /* <init>() */
+
+    }
+
+  }
+
+}
+
+// MODULE: main
+// FILE: module_common_annotationsGeneratedInBackend_MPP.kt
+package test
+
+@AnnotationToAdd(booleanValue = true, byteValue = 1B, charValue = 'c', doubleValue = 4.2, floatValue = 2.4F, intValue = 42, longValue = 24L, shortValue = 7S, stringValue = "OK")
+class VerySpecificNameInCommon {
+  @AnnotationToAdd(booleanValue = true, byteValue = 1B, charValue = 'c', doubleValue = 4.2, floatValue = 2.4F, intValue = 42, longValue = 24L, shortValue = 7S, stringValue = "OK")
+  constructor(@AnnotationToAdd(booleanValue = true, byteValue = 1B, charValue = 'c', doubleValue = 4.2, floatValue = 2.4F, intValue = 42, longValue = 24L, shortValue = 7S, stringValue = "OK") x: Int) /* primary */ {
+    super/*Any*/()
+    /* <init>() */
+
+  }
+
+  @AnnotationToAdd(booleanValue = true, byteValue = 1B, charValue = 'c', doubleValue = 4.2, floatValue = 2.4F, intValue = 42, longValue = 24L, shortValue = 7S, stringValue = "OK")
+  val x: Int
+    field = x
+    @AnnotationToAdd(booleanValue = true, byteValue = 1B, charValue = 'c', doubleValue = 4.2, floatValue = 2.4F, intValue = 42, longValue = 24L, shortValue = 7S, stringValue = "OK")
+    get
+
+  @AnnotationToAdd(booleanValue = true, byteValue = 1B, charValue = 'c', doubleValue = 4.2, floatValue = 2.4F, intValue = 42, longValue = 24L, shortValue = 7S, stringValue = "OK")
+  fun foo() {
+  }
+
+  @AnnotationToAdd(booleanValue = true, byteValue = 1B, charValue = 'c', doubleValue = 4.2, floatValue = 2.4F, intValue = 42, longValue = 24L, shortValue = 7S, stringValue = "OK")
+  class Derived {
+    @AnnotationToAdd(booleanValue = true, byteValue = 1B, charValue = 'c', doubleValue = 4.2, floatValue = 2.4F, intValue = 42, longValue = 24L, shortValue = 7S, stringValue = "OK")
+    constructor() /* primary */ {
+      super/*Any*/()
+      /* <init>() */
+
+    }
+
+  }
+
+}
+
+// FILE: module_main_annotationsGeneratedInBackend_MPP.kt
+package test
+
+@AnnotationToAdd(booleanValue = true, byteValue = 1B, charValue = 'c', doubleValue = 4.2, floatValue = 2.4F, intValue = 42, longValue = 24L, shortValue = 7S, stringValue = "OK")
+class VerySpecificNameInPlatform {
+  @AnnotationToAdd(booleanValue = true, byteValue = 1B, charValue = 'c', doubleValue = 4.2, floatValue = 2.4F, intValue = 42, longValue = 24L, shortValue = 7S, stringValue = "OK")
+  constructor(@AnnotationToAdd(booleanValue = true, byteValue = 1B, charValue = 'c', doubleValue = 4.2, floatValue = 2.4F, intValue = 42, longValue = 24L, shortValue = 7S, stringValue = "OK") x: Int) /* primary */ {
+    super/*Any*/()
+    /* <init>() */
+
+  }
+
+  @AnnotationToAdd(booleanValue = true, byteValue = 1B, charValue = 'c', doubleValue = 4.2, floatValue = 2.4F, intValue = 42, longValue = 24L, shortValue = 7S, stringValue = "OK")
+  val x: Int
+    field = x
+    @AnnotationToAdd(booleanValue = true, byteValue = 1B, charValue = 'c', doubleValue = 4.2, floatValue = 2.4F, intValue = 42, longValue = 24L, shortValue = 7S, stringValue = "OK")
+    get
+
+  @AnnotationToAdd(booleanValue = true, byteValue = 1B, charValue = 'c', doubleValue = 4.2, floatValue = 2.4F, intValue = 42, longValue = 24L, shortValue = 7S, stringValue = "OK")
+  fun foo() {
+  }
+
+  @AnnotationToAdd(booleanValue = true, byteValue = 1B, charValue = 'c', doubleValue = 4.2, floatValue = 2.4F, intValue = 42, longValue = 24L, shortValue = 7S, stringValue = "OK")
+  class Derived {
+    @AnnotationToAdd(booleanValue = true, byteValue = 1B, charValue = 'c', doubleValue = 4.2, floatValue = 2.4F, intValue = 42, longValue = 24L, shortValue = 7S, stringValue = "OK")
+    constructor() /* primary */ {
+      super/*Any*/()
+      /* <init>() */
+
+    }
+
+  }
+
+}
+

plugins/fir-plugin-prototype/testData/firLoadK2Compiled/annotationsGeneratedInBackend_MPP.kt

@@ -0,0 +1,20 @@
+// PLATFORM_DEPENDANT_METADATA
+// DUMP_KT_IR
+// LANGUAGE: +MultiPlatformProjects
+// MODULE: common
+package test
+
+class VerySpecificNameInCommon(val x: Int) {
+  fun foo() {}
+
+  class Derived
+}
+
+// MODULE: main()()(common)
+package test
+
+class VerySpecificNameInPlatform(val x: Int) {
+  fun foo() {}
+
+  class Derived
+}

plugins/fir-plugin-prototype/tests-gen/org/jetbrains/kotlin/fir/plugin/runners/FirLoadK2CompiledWithPluginJsKotlinTestGenerated.java

@@ -31,6 +31,12 @@ public class FirLoadK2CompiledWithPluginJsKotlinTestGenerated extends AbstractFi
         runTest("plugins/fir-plugin-prototype/testData/firLoadK2Compiled/annotationsGeneratedInBackend.kt");
     }
 
+    @Test
+    @TestMetadata("annotationsGeneratedInBackend_MPP.kt")
+    public void testAnnotationsGeneratedInBackend_MPP() throws Exception {
+        runTest("plugins/fir-plugin-prototype/testData/firLoadK2Compiled/annotationsGeneratedInBackend_MPP.kt");
+    }
+
     @Test
     @TestMetadata("simple.kt")
     public void testSimple() throws Exception {

plugins/fir-plugin-prototype/tests-gen/org/jetbrains/kotlin/fir/plugin/runners/FirLoadK2CompiledWithPluginJvmKotlinTestGenerated.java

@@ -31,6 +31,12 @@ public class FirLoadK2CompiledWithPluginJvmKotlinTestGenerated extends AbstractF
         runTest("plugins/fir-plugin-prototype/testData/firLoadK2Compiled/annotationsGeneratedInBackend.kt");
     }
 
+    @Test
+    @TestMetadata("annotationsGeneratedInBackend_MPP.kt")
+    public void testAnnotationsGeneratedInBackend_MPP() throws Exception {
+        runTest("plugins/fir-plugin-prototype/testData/firLoadK2Compiled/annotationsGeneratedInBackend_MPP.kt");
+    }
+
     @Test
     @TestMetadata("simple.kt")
     public void testSimple() throws Exception {