[CMP] no metadata annotations on synthetic classes

prevents adding metadata-visible annotations to synthetic declarations
for example we should not add annotations to classes generated by another compiler plugins

Author: shishkin-pavel

plugins/compose/compiler-hosted/src/main/java/androidx/compose/compiler/plugins/kotlin/lower/AbstractComposeLowering.kt

@@ -27,6 +27,8 @@ import org.jetbrains.kotlin.backend.common.lower.DeclarationIrBuilder
 import org.jetbrains.kotlin.backend.jvm.ir.isInlineClassType
 import org.jetbrains.kotlin.builtins.PrimitiveType
 import org.jetbrains.kotlin.descriptors.DescriptorVisibilities
+import org.jetbrains.kotlin.fir.backend.FirMetadataSource
+import org.jetbrains.kotlin.fir.declarations.FirDeclaration
 import org.jetbrains.kotlin.fir.declarations.utils.klibSourceFile
 import org.jetbrains.kotlin.fir.lazy.Fir2IrLazyClass
 import org.jetbrains.kotlin.ir.IrElement
@@ -1590,6 +1592,8 @@ fun IrAnnotationContainer.hasAnnotationSafe(fqName: FqName): Boolean =
 val IrConstructorCall.annotationClass
     get() = type.classOrNull
 
+fun IrDeclaration.hasFirDeclaration(): Boolean = ((this as? IrMetadataSourceOwner)?.metadata as? FirMetadataSource)?.fir != null
+
 inline fun <T> includeFileNameInExceptionTrace(file: IrFile, body: () -> T): T {
     try {
         return body()

plugins/compose/compiler-hosted/src/main/java/androidx/compose/compiler/plugins/kotlin/lower/ClassStabilityTransformer.kt

@@ -191,7 +191,7 @@ class ClassStabilityTransformer(
             it.putValueArgument(0, irConst(parameterMask))
         }
 
-        if (useK2) {
+        if (useK2 && cls.hasFirDeclaration()) {
             context.metadataDeclarationRegistrar.addMetadataVisibleAnnotationsToElement(
                 cls,
                 annotation,

plugins/compose/compiler-hosted/src/main/java/androidx/compose/compiler/plugins/kotlin/lower/hiddenfromobjc/AddHiddenFromObjCLowering.kt

@@ -21,6 +21,7 @@ import androidx.compose.compiler.plugins.kotlin.ModuleMetrics
 import androidx.compose.compiler.plugins.kotlin.analysis.StabilityInferencer
 import androidx.compose.compiler.plugins.kotlin.lower.AbstractComposeLowering
 import androidx.compose.compiler.plugins.kotlin.lower.containsComposableAnnotation
+import androidx.compose.compiler.plugins.kotlin.lower.hasFirDeclaration
 import androidx.compose.compiler.plugins.kotlin.lower.needsComposableRemapping
 import org.jetbrains.kotlin.backend.common.extensions.IrPluginContext
 import org.jetbrains.kotlin.descriptors.DescriptorVisibilities
@@ -130,6 +131,9 @@ class AddHiddenFromObjCLowering(
     }
 
     private fun IrDeclaration.addHiddenFromObjCAnnotation() {
+        if (!hasFirDeclaration()) {
+            return
+        }
         val annotation = IrConstructorCallImpl.fromSymbolOwner(
             type = hiddenFromObjCAnnotation.defaultType,
             constructorSymbol = hiddenFromObjCAnnotation.constructors.first()