ARM, ARM64: Optimize array copy

src/ia32/lithium-ia32.cc

Index: src/ia32/lithium-ia32.cc
diff --git a/src/ia32/lithium-ia32.cc b/src/ia32/lithium-ia32.cc
index 44b4ea5089d93041c925bbe91f6339c036237109..baeb301b90155b52e5a8f9618602fdfa425855de 100644
--- a/src/ia32/lithium-ia32.cc
+++ b/src/ia32/lithium-ia32.cc
@@ -2212,6 +2212,18 @@ LInstruction* LChunkBuilder::DoLoadKeyedGeneric(HLoadKeyedGeneric* instr) {
 }
 
 
+LInstruction* LChunkBuilder::DoFillElements(HFillElements* instr) {
+  UNIMPLEMENTED();
+  return NULL;
+}
+
+
+LInstruction* LChunkBuilder::DoCopyElements(HCopyElements* instr) {
+  UNIMPLEMENTED();
+  return NULL;
+}
+
+
 LOperand* LChunkBuilder::GetStoreKeyedValueOperand(HStoreKeyed* instr) {
   ElementsKind elements_kind = instr->elements_kind();