Enable regression test for array aliasing bug.

Bug: 64018485

Test: 662
Change-Id: I93b1f4a825d33a2e3f0d92c7fa97358b1e7bd961
diff --git a/test/knownfailures.json b/test/knownfailures.json
index 1d4be6a..e20c2c8 100644
--- a/test/knownfailures.json
+++ b/test/knownfailures.json
@@ -714,11 +714,5 @@
                   "968-default-partial-compile-gen"],
         "env_vars": {"SANITIZE_HOST": "address"},
         "description": ["Test hits dex2oat watchdog timeout (60sec) on art-asan"]
-    },
-    {
-        "tests": "662-regression-alias",
-        "variant": "target",
-        "description": ["disable until ARM scheduling/aliasing bug is fixed."],
-        "bug": "b/64018485"
     }
 ]