[es6] Spread in array literals

src/hydrogen.cc

Index: src/hydrogen.cc
diff --git a/src/hydrogen.cc b/src/hydrogen.cc
index 5bf9f7b0d154f66c9e924695dc3c5dd2f1df0987..84de23dc5c79c6941cb957a71093a9b883ad6c05 100644
--- a/src/hydrogen.cc
+++ b/src/hydrogen.cc
@@ -5861,6 +5861,10 @@ void HOptimizedGraphBuilder::VisitArrayLiteral(ArrayLiteral* expr) {
 
   for (int i = 0; i < length; i++) {
     Expression* subexpr = subexprs->at(i);
+    if (subexpr->IsSpread()) {
+      return Bailout(kSpread);
+    }
+
     // If the subexpression is a literal or a simple materialized literal it
     // is already set in the cloned array.
     if (CompileTimeValue::IsCompileTimeValue(subexpr)) continue;