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

^KT-65979

compiler/testData/codegen/box/escapeAnalysis/test7.kt

@@ -0,0 +1,56 @@
+/*
+ * 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 mutual recursion with `A(String)` and `C()`. Don't try to execute the code.
+class A(val s: String) {
+    var h: String = ""
+    var p: C = C()
+}
+class B {
+    var f: A = A("qzz")
+}
+class C {
+    var g: A = A("")
+}
+class D {
+    var o: A = A("")
+}
+
+// ----- Agressive -----
+// PointsTo:
+//     P1.g -> D0
+//     P2.f -> D0
+//     P4.o -> P1.g
+//     P4.o -> P2.f
+//     P4.o -> D0
+//     RET.v@lue -> D1
+//     D0.p -> P1
+//     D0.h -> P3
+// Escapes: D1
+// ----- Passive -----
+// PointsTo:
+//     P1.g -> D0
+//     P2.f -> D0
+//     P4.o -> P1.g
+//     P4.o -> P2.f
+//     P4.o -> D0
+//     RET.v@lue -> D1
+//     D0.p -> P1
+//     D0.h -> P3
+// Escapes: D1
+fun foo(z: Boolean, c: C, b: B, s: String, d: D) {
+    val v = if(z) c.g else b.f
+    v.h = s
+    d.o = v
+    val u = v
+    u.p = c
+}
+
+fun box(): String {
+    // When uncommented, execution of the following line would fall into infinite recursion
+    // foo(true, C(), B(), "zzz", D())
+    return "OK"
+}