Infra for running lib tests

test/codegen/lib/typed_data/int32x4_shuffle_test.dart

Index: test/codegen/lib/typed_data/int32x4_shuffle_test.dart
diff --git a/test/codegen/lib/typed_data/int32x4_shuffle_test.dart b/test/codegen/lib/typed_data/int32x4_shuffle_test.dart
new file mode 100644
index 0000000000000000000000000000000000000000..d2b4bc6e37ec3de983f89b8179e2049b424a588b
--- /dev/null
+++ b/test/codegen/lib/typed_data/int32x4_shuffle_test.dart
@@ -0,0 +1,59 @@
+// 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=--optimization-counter-threshold=10
+
+// Library tag to be able to run in html test framework.
+library uint32x4_shuffle_test;
+
+import 'dart:typed_data';
+import "package:expect/expect.dart";
+
+void testShuffle() {
+  var m = new Int32x4(1, 2, 3, 4);
+  var c;
+  c = m.shuffle(Int32x4.WZYX);
+  Expect.equals(4, c.x);
+  Expect.equals(3, c.y);
+  Expect.equals(2, c.z);
+  Expect.equals(1, c.w);
+}
+
+void testShuffleNonConstant(mask) {
+  var m = new Int32x4(1, 2, 3, 4);
+  var c;
+  c = m.shuffle(mask);
+  if (mask == 1) {
+    Expect.equals(2, c.x);
+    Expect.equals(1, c.y);
+    Expect.equals(1, c.z);
+    Expect.equals(1, c.w);
+  } else {
+    Expect.equals(Int32x4.YYYY + 1, mask);
+    Expect.equals(3, c.x);
+    Expect.equals(2, c.y);
+    Expect.equals(2, c.z);
+    Expect.equals(2, c.w);
+  }
+}
+
+void testShuffleMix() {
+  var m = new Int32x4(1, 2, 3, 4);
+  var n = new Int32x4(5, 6, 7, 8);
+  var c = m.shuffleMix(n, Int32x4.XYXY);
+  Expect.equals(1, c.x);
+  Expect.equals(2, c.y);
+  Expect.equals(5, c.z);
+  Expect.equals(6, c.w);
+}
+
+main() {
+  var xxxx = Int32x4.XXXX + 1;
+  var yyyy = Int32x4.YYYY + 1;
+  for (int i = 0; i < 20; i++) {
+    testShuffle();
+    testShuffleNonConstant(xxxx);
+    testShuffleNonConstant(yyyy);
+    testShuffleMix();
+  }
+}