Allow embedding of ConsString objects into code.

src/hydrogen-instructions.cc

Index: src/hydrogen-instructions.cc
diff --git a/src/hydrogen-instructions.cc b/src/hydrogen-instructions.cc
index bea3cea9f68865657cac588f75a589eb6fed8029..167b38531c49f53fb3074be23f72d44d0c9cf527 100644
--- a/src/hydrogen-instructions.cc
+++ b/src/hydrogen-instructions.cc
@@ -4067,10 +4067,10 @@ HInstruction* HStringAdd::New(Zone* zone,
       Handle<String> right_string = c_right->StringValue();
       // Prevent possible exception by invalid string length.
       if (left_string->length() + right_string->length() < String::kMaxLength) {
-        Handle<String> concat = zone->isolate()->factory()->NewFlatConcatString(
+        MaybeHandle<String> concat = zone->isolate()->factory()->NewConsString(
             c_left->StringValue(), c_right->StringValue());
         ASSERT(!concat.is_null());

[Yang, 2014/07/15 09:49:06]

This assertion is obsolete since we do a ToHandleChecked().

[Michael Starzinger, 2014/07/15 09:52:47]

Done.

-        return HConstant::New(zone, context, concat);
+        return HConstant::New(zone, context, concat.ToHandleChecked());
       }
     }
   }