[Tests] Migrate backend-independent tests from native to compiler/testData.

^KT-65979

compiler/testData/codegen/box/escapeAnalysis/test8.kt

@@ -0,0 +1,47 @@
+/*
+ * Copyright 2010-2020 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license
+ * that can be found in the LICENSE file.
+ */
+// TODO: check mentioned debug output of escape analyser
+
+// Note: intentional infinite recursion for F(String). Don't try to execute the code.
+class F(val s: String) {
+    var g = F("OK")
+}
+
+class A {
+    var f = F("qzz")
+}
+
+// ----- Agressive -----
+// PointsTo:
+//     P0.f -> D0
+//     RET.v@lue -> P0.f
+//     RET.v@lue -> D0
+//     RET.v@lue -> D0.g
+//     D0.g -> P0.f
+//     D0.g -> D0
+// Escapes:
+// ----- Passive -----
+// PointsTo:
+//     P0.f -> D0
+//     RET.v@lue -> P0.f
+//     RET.v@lue -> D0
+//     RET.v@lue -> D0.g
+//     D0.g -> P0.f
+//     D0.g -> D0
+//     D0.g -> D2
+//     D1 -> D0
+//     D2 -> D0
+// Escapes: D1 D2
+fun foo(a: A): F {
+    a.f = F("zzz")
+    a.f.g = a.f
+    return a.f.g.g
+}
+
+fun box(): String {
+    // When uncommented, execution of the following line would fall into infinite recursion
+    // foo(A()).s
+    return "OK"
+}