[es6] implement spread calls

src/hydrogen.cc

Index: src/hydrogen.cc
diff --git a/src/hydrogen.cc b/src/hydrogen.cc
index 35761f7436da2b7aec4a3f323808b0a381add2d7..6819041c92b4aaef82c1bcd3dc32b3d74498fb7f 100644
--- a/src/hydrogen.cc
+++ b/src/hydrogen.cc
@@ -11028,6 +11028,9 @@ void HOptimizedGraphBuilder::HandleLiteralCompareNil(CompareOperation* expr,
 }
 
 
+void HOptimizedGraphBuilder::VisitSpread(Spread* expr) { UNREACHABLE(); }

[Dmitry Lomov (no reviews), 2015/04/02 07:54:20]

One thing I am missing: why this is never hit?

[caitp (gmail), 2015/04/02 13:03:51]

the Spread nodes are removed from the graph, they're only really useful for
helping desugaring, currently

+
+
 HInstruction* HOptimizedGraphBuilder::BuildThisFunction() {
   // If we share optimized code between different closures, the
   // this-function is not a constant, except inside an inlined body.