Add Float32x4List.fromList to runtime implementation and some tests

tests/lib/typed_data/float32x4_transpose_test.dart

Index: tests/lib/typed_data/float32x4_transpose_test.dart
diff --git a/tests/lib/typed_data/float32x4_transpose_test.dart b/tests/lib/typed_data/float32x4_transpose_test.dart
new file mode 100644
index 0000000000000000000000000000000000000000..f408d742a55b439929b044b70cdc3297bc8c0294
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+++ b/tests/lib/typed_data/float32x4_transpose_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_transpose_test;
+
+import 'dart:typed_data';
+import 'package:expect/expect.dart';
+
+void transpose(Float32x4List m) {
+  Expect.equals(4, m.length);
+  var m0 = m[0];
+  var m1 = m[1];
+  var m2 = m[2];
+  var m3 = m[3];
+  var t0 = m0.interleaveXY(m1);
+  var t1 = m2.interleaveXY(m3);
+  var t2 = m0.interleaveZW(m1);
+  var t3 = m2.interleaveZW(m3);
+  m[0] = t0.interleaveXYPairs(t1);
+  m[1] = t0.interleaveZWPairs(t1);
+  m[2] = t2.interleaveXYPairs(t3);
+  m[3] = t2.interleaveZWPairs(t3);
+}
+
+void testTranspose(Float32x4List m, Float32x4List r) {
+  transpose(m); // In place transpose.
+  for (int i = 0; i < 4; i++) {
+    var a = m[i];
+    var b = r[i];
+    Expect.equals(b.x, a.x);
+    Expect.equals(b.y, a.y);
+    Expect.equals(b.z, a.z);
+    Expect.equals(b.w, a.w);
+  }
+}
+
+main() {
+  var A = new Float32x4List(4);
+  A[0] = new Float32x4(1.0, 2.0, 3.0, 4.0);
+  A[1] = new Float32x4(5.0, 6.0, 7.0, 8.0);
+  A[2] = new Float32x4(9.0, 10.0, 11.0, 12.0);
+  A[3] = new Float32x4(13.0, 14.0, 15.0, 16.0);
+  var B = new Float32x4List(4);
+  B[0] = new Float32x4(1.0, 5.0, 9.0, 13.0);
+  B[1] = new Float32x4(2.0, 6.0, 10.0, 14.0);
+  B[2] = new Float32x4(3.0, 7.0, 11.0, 15.0);
+  B[3] = new Float32x4(4.0, 8.0, 12.0, 16.0);
+  var I = new Float32x4List(4);
+  I[0] = new Float32x4(1.0, 0.0, 0.0, 0.0);
+  I[1] = new Float32x4(0.0, 1.0, 0.0, 0.0);
+  I[2] = new Float32x4(0.0, 0.0, 1.0, 0.0);
+  I[3] = new Float32x4(0.0, 0.0, 0.0, 1.0);
+  for (int i = 0; i < 20; i++) {
+    var m = new Float32x4List.fromList(I);
+    testTranspose(m, I);
+    m = new Float32x4List.fromList(A);
+    testTranspose(m, B);
+  }
+}