Reduce the amount of full code generated to fill out array literals.

src/hydrogen.cc

Index: src/hydrogen.cc
diff --git a/src/hydrogen.cc b/src/hydrogen.cc
index e7fbabae1d51e489709c29a9e13f03f51dcd9024..01766bdb7d2e26fa303523ad423ff910f88d9386 100644
--- a/src/hydrogen.cc
+++ b/src/hydrogen.cc
@@ -6073,6 +6073,8 @@ void HOptimizedGraphBuilder::VisitArrayLiteral(ArrayLiteral* expr) {
   // The array is expected in the bailout environment during computation
   // of the property values and is the value of the entire expression.
   Push(literal);
+  // The literal index is on the stack, too.
+  Push(AddInstruction(new(zone()) HConstant(expr->literal_index())));
 
   HInstruction* elements = NULL;
 
@@ -6110,6 +6112,8 @@ void HOptimizedGraphBuilder::VisitArrayLiteral(ArrayLiteral* expr) {
 
     AddSimulate(expr->GetIdForElement(i));
   }
+
+  Drop(1);  // array literal index
   return ast_context()->ReturnValue(Pop());
 }