Expose SIMD.Float32x4 type to Javascript.

test/cctest/test-simd.cc

Index: test/cctest/test-simd.cc
diff --git a/test/cctest/test-simd.cc b/test/cctest/test-simd.cc
new file mode 100644
index 0000000000000000000000000000000000000000..e87032df8f9640520655f5fba2d572c241f2642c
--- /dev/null
+++ b/test/cctest/test-simd.cc
@@ -0,0 +1,45 @@
+// Copyright 2015 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "src/v8.h"
+
+#include "src/objects.h"
+#include "src/ostreams.h"
+#include "test/cctest/cctest.h"
+
+using namespace v8::internal;
+
+
+TEST(SameValue) {
+  CcTest::InitializeVM();
+  Isolate* isolate = CcTest::i_isolate();
+  Factory* factory = isolate->factory();
+
+  HandleScope sc(isolate);
+
+  float nan = std::numeric_limits<float>::quiet_NaN();
+
+  Handle<Float32x4> a = factory->NewFloat32x4(0, 0, 0, 0);
+  Handle<Float32x4> b = factory->NewFloat32x4(0, 0, 0, 0);
+  CHECK(a->SameValue(*b));
+  for (int i = 0; i < 4; i++) {
+    a->set_lane(i, nan);
+    CHECK(!a->SameValue(*b));
+    CHECK(!a->SameValueZero(*b));
+    b->set_lane(i, nan);
+    CHECK(a->SameValue(*b));
+    CHECK(a->SameValueZero(*b));
+    a->set_lane(i, -0.0);
+    CHECK(!a->SameValue(*b));
+    b->set_lane(i, 0);
+    CHECK(!a->SameValue(*b));
+    CHECK(a->SameValueZero(*b));
+    b->set_lane(i, -0.0);
+    CHECK(a->SameValue(*b));
+    CHECK(a->SameValueZero(*b));
+
+    a->set_lane(i, 0);
+    b->set_lane(i, 0);
+  }
+}