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

^KT-65979

compiler/testData/codegen/box/inline/inline4.kt

@@ -0,0 +1,22 @@
+/*
+ * Copyright 2010-2018 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.
+ */
+// WITH_STDLIB
+
+import kotlin.test.*
+
+@Suppress("NOTHING_TO_INLINE")
+inline fun foo(i4: Int, i5: Int): Int {
+    if (i4 > 0) return i4
+    return i5
+}
+
+fun bar(i1: Int, i2: Int): Int {
+    return foo(i1, i2)
+}
+
+fun box(): String {
+    assertEquals(3, bar(3, 8))
+    return "OK"
+}