Generate container class for repeatable annotations

#KT-12794

compiler/testData/codegen/box/annotations/repeatable/kotlinAnnotation.kt

@@ -0,0 +1,41 @@
+// !LANGUAGE: +RepeatableAnnotations
+// TARGET_BACKEND: JVM_IR
+// WITH_RUNTIME
+// FULL_JDK
+// JVM_TARGET: 1.8
+
+// java.lang.NoSuchMethodError: java.lang.Class.getAnnotationsByType
+// IGNORE_BACKEND: ANDROID
+
+// FILE: box.kt
+
+@Repeatable
+annotation class A(val value: String)
+
+@A("O")
+@A("")
+@A("K")
+class Z
+
+fun box(): String {
+    val annotations = Z::class.java.annotations.filter { it.annotationClass != Metadata::class }
+    val aa = annotations.singleOrNull() ?: return "Fail 1: $annotations"
+
+    val a = ContainerSupport.load(aa)
+    if (a.size != 3) return "Fail 2: $a"
+
+    val bytype = Z::class.java.getAnnotationsByType(A::class.java)
+    if (a.toList() != bytype.toList()) return "Fail 3: ${a.toList()} != ${bytype.toList()}"
+
+    return a.fold("") { acc, it -> acc + it.value }
+}
+
+// FILE: ContainerSupport.java
+
+import java.lang.annotation.Annotation;
+
+public class ContainerSupport {
+    public static A[] load(Annotation container) {
+        return ((A.Container) container).value();
+    }
+}

compiler/testData/codegen/box/annotations/repeatable/kotlinAnnotationWithBothRepeatables.kt

@@ -0,0 +1,33 @@
+// !LANGUAGE: +RepeatableAnnotations
+// TARGET_BACKEND: JVM_IR
+// WITH_RUNTIME
+// FULL_JDK
+// JVM_TARGET: 1.8
+
+// java.lang.NoSuchMethodError: java.lang.Class.getAnnotationsByType
+// IGNORE_BACKEND: ANDROID
+
+@Repeatable
+@java.lang.annotation.Repeatable(As::class)
+annotation class A(val value: String)
+
+annotation class As(val value: Array<A>)
+
+@A("O")
+@A("")
+@A("K")
+class Z
+
+fun box(): String {
+    val annotations = Z::class.java.annotations.filter { it.annotationClass != Metadata::class }
+    val aa = annotations.singleOrNull() ?: return "Fail 1: $annotations"
+    if (aa !is As) return "Fail 2: $aa"
+
+    val a = aa.value.asList()
+    if (a.size != 3) return "Fail 3: $a"
+
+    val bytype = Z::class.java.getAnnotationsByType(A::class.java)
+    if (a.toList() != bytype.toList()) return "Fail 4: ${a.toList()} != ${bytype.toList()}"
+
+    return a.fold("") { acc, it -> acc + it.value }
+}