Infra for running lib tests

test/codegen/lib/typed_data/float32x4_sign_mask_test.dart

Index: test/codegen/lib/typed_data/float32x4_sign_mask_test.dart
diff --git a/test/codegen/lib/typed_data/float32x4_sign_mask_test.dart b/test/codegen/lib/typed_data/float32x4_sign_mask_test.dart
new file mode 100644
index 0000000000000000000000000000000000000000..95825d4a3b7cf374a6229ab6fa51733ada4d19c9
--- /dev/null
+++ b/test/codegen/lib/typed_data/float32x4_sign_mask_test.dart
@@ -0,0 +1,62 @@
+// 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 float32x4_sign_mask;
+
+import 'dart:typed_data';
+import 'package:expect/expect.dart';
+
+void testImmediates() {
+  var f = new Float32x4(1.0, 2.0, 3.0, 4.0);
+  var m = f.signMask;
+  Expect.equals(0x0, m);
+  f = new Float32x4(-1.0, -2.0, -3.0, -0.0);
+  m = f.signMask;
+  Expect.equals(0xf, m);
+  f = new Float32x4(-1.0, 2.0, 3.0, 4.0);
+  m = f.signMask;
+  Expect.equals(0x1, m);
+  f = new Float32x4(1.0, -2.0, 3.0, 4.0);
+  m = f.signMask;
+  Expect.equals(0x2, m);
+  f = new Float32x4(1.0, 2.0, -3.0, 4.0);
+  m = f.signMask;
+  Expect.equals(0x4, m);
+  f = new Float32x4(1.0, 2.0, 3.0, -4.0);
+  m = f.signMask;
+  Expect.equals(0x8, m);
+}
+
+void testZero() {
+  var f = new Float32x4(0.0, 0.0, 0.0, 0.0);
+  var m = f.signMask;
+  Expect.equals(0x0, m);
+  f = new Float32x4(-0.0, -0.0, -0.0, -0.0);
+  m = f.signMask;
+  Expect.equals(0xf, m);
+}
+
+void testArithmetic() {
+  var a = new Float32x4(1.0, 1.0, 1.0, 1.0);
+  var b = new Float32x4(2.0, 2.0, 2.0, 2.0);
+  var c = new Float32x4(-1.0, -1.0, -1.0, -1.0);
+  var m1 = (a - b).signMask;
+  Expect.equals(0xf, m1);
+  var m2 = (b - a).signMask;
+  Expect.equals(0x0, m2);
+  var m3 = (c * c).signMask;
+  Expect.equals(0x0, m3);
+  var m4 = (a * c).signMask;
+  Expect.equals(0xf, m4);
+}
+
+main() {
+  for (int i = 0; i < 2000; i++) {
+    testImmediates();
+    testZero();
+    testArithmetic();
+  }
+}