Moved tests

that are used both for codegen & diagnostics to codegen/box/diagnostics

compiler/testData/codegen/box/diagnostics/functions/tailRecursion/multilevelBlocks.kt

@@ -0,0 +1,15 @@
+tailRecursive fun test(x : Int) : Int {
+    if (x == 1) {
+        if (x != 1) {
+            <!NON_TAIL_RECURSIVE_CALL!>test<!>(0)
+            return test(0)
+        } else {
+            return test(x + <!NON_TAIL_RECURSIVE_CALL!>test<!>(0))
+        }
+    } else if (x > 0) {
+        return test(x - 1)
+    }
+    return -1
+}
+
+fun box() : String = if (test(1000000) == -1) "OK" else "FAIL"