Unbox phis with Float32x4 or Uint32x4 type

tests/lib/typed_data/float32x4_unbox_phi_test.dart

Index: tests/lib/typed_data/float32x4_unbox_phi_test.dart
diff --git a/tests/lib/typed_data/float32x4_unbox_phi_test.dart b/tests/lib/typed_data/float32x4_unbox_phi_test.dart
new file mode 100644
index 0000000000000000000000000000000000000000..008d9c9b1e8d02edf40bcb6b9ac38bf46f30f2aa
--- /dev/null
+++ b/tests/lib/typed_data/float32x4_unbox_phi_test.dart
@@ -0,0 +1,30 @@
+// Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+// VMOptions=--deoptimization_counter_threshold=1000
+
+// Library tag to be able to run in html test framework.
+library float32x4_unbox_regress_test;
+
+import 'package:expect/expect.dart';
+import 'dart:typed_data';
+
+double testUnboxPhi(Float32x4List data) {
+  var res = new Float32x4.zero();
+  for (int i = 0; i < data.length; i++) {
+    res += data[i];
+  }
+  return res.x + res.y + res.z + res.w;
+}
+
+main() {
+  Float32x4List list = new Float32x4List(10);
+  Float32List floatList = new Float32List.view(list);
+  for (int i = 0; i < floatList.length; i++) {
+    floatList[i] = i.toDouble();
+  }
+  for (int i = 0; i < 2000; i++) {
+    double r = testUnboxPhi(list);
+    Expect.equals(780.0, r);
+  }
+}