Expose SIMD.Float32x4 type to Javascript.

test/cctest/test-heap-profiler.cc

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 463 matching lines @@
   CHECK(a);
   CHECK_EQ(a->GetType(), v8::HeapGraphNode::kSymbol);
   CHECK(v8_str("symbol")->Equals(a->GetName()));
   const v8::HeapGraphNode* name =
       GetProperty(a, v8::HeapGraphEdge::kInternal, "name");
   CHECK(name);
   CHECK(v8_str("mySymbol")->Equals(name->GetName()));
 }
 
 
+TEST(HeapSnapshotFloat32x4) {
+  LocalContext env;
+  v8::HandleScope scope(env->GetIsolate());
+  v8::HeapProfiler* heap_profiler = env->GetIsolate()->GetHeapProfiler();
+
+  CompileRun("a = SIMD.float32x4(1, 2, 3, 4);\n");
+  const v8::HeapSnapshot* snapshot = heap_profiler->TakeHeapSnapshot();
+  CHECK(ValidateSnapshot(snapshot));
+  const v8::HeapGraphNode* global = GetGlobalObject(snapshot);
+  const v8::HeapGraphNode* a =
+      GetProperty(global, v8::HeapGraphEdge::kProperty, "a");
+  CHECK(a);
+  CHECK_EQ(a->GetType(), v8::HeapGraphNode::kSimdValue);
+}
+
+
 TEST(HeapSnapshotWeakCollection) {
   LocalContext env;
   v8::HandleScope scope(env->GetIsolate());
   v8::HeapProfiler* heap_profiler = env->GetIsolate()->GetHeapProfiler();
 
   CompileRun(
       "k = {}; v = {}; s = 'str';\n"
       "ws = new WeakSet(); ws.add(k); ws.add(v); ws[s] = s;\n"
       "wm = new WeakMap(); wm.set(k, v); wm[s] = s;\n");
   const v8::HeapSnapshot* snapshot = heap_profiler->TakeHeapSnapshot();
@@ skipping 2262 matching lines @@
   map.AddRange(ToAddress(0x180), 0x80, 6U);
   map.AddRange(ToAddress(0x180), 0x80, 7U);
   CHECK_EQ(7u, map.GetTraceNodeId(ToAddress(0x180)));
   CHECK_EQ(5u, map.GetTraceNodeId(ToAddress(0x200)));
   CHECK_EQ(3u, map.size());
 
   map.Clear();
   CHECK_EQ(0u, map.size());
   CHECK_EQ(0u, map.GetTraceNodeId(ToAddress(0x400)));
 }