[Isolates] Merge crankshaft (r5922 from bleeding_edge).

test/cctest/test-dataflow.cc

 // Copyright 2010 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 35 matching lines @@
     v.Add(0);
     v.Add(1);
     BitVector w(15);
     w.Add(1);
     v.Intersect(w);
     CHECK(!v.Contains(0));
     CHECK(v.Contains(1));
   }
 
   {
+    BitVector v(64);
+    v.Add(27);
+    v.Add(30);
+    v.Add(31);
+    v.Add(33);
+    BitVector::Iterator iter(&v);
+    CHECK_EQ(27, iter.Current());
+    iter.Advance();
+    CHECK_EQ(30, iter.Current());
+    iter.Advance();
+    CHECK_EQ(31, iter.Current());
+    iter.Advance();
+    CHECK_EQ(33, iter.Current());
+    iter.Advance();
+    CHECK(iter.Done());
+  }
+
+  {
     BitVector v(15);
     v.Add(0);
     BitVector w(15);
     w.Add(1);
     v.Union(w);
     CHECK(v.Contains(0));
     CHECK(v.Contains(1));
   }
 
   {
@@ skipping 29 matching lines @@
     w.Add(33);
     v.Intersect(w);
     CHECK(!v.Contains(32));
     CHECK(v.Contains(33));
     BitVector r(35);
     r.CopyFrom(v);
     CHECK(!r.Contains(32));
     CHECK(r.Contains(33));
   }
 }