Remove (H|L)JSArrayLength instructions

src/code-stubs-hydrogen.cc

Index: src/code-stubs-hydrogen.cc
diff --git a/src/code-stubs-hydrogen.cc b/src/code-stubs-hydrogen.cc
index 0a8b9d5767db3f641979ea3b41aacfcf92feca73..4ec34f98075117eba6228fb4f78ba2ffa06921f3 100644
--- a/src/code-stubs-hydrogen.cc
+++ b/src/code-stubs-hydrogen.cc
@@ -273,9 +273,8 @@ HValue* CodeStubGraphBuilder<TransitionElementsKindStub>::BuildCodeStub() {
   AddInstruction(new(zone) HTrapAllocationMemento(js_array));
 
   HInstruction* array_length =
-      AddInstruction(new(zone) HJSArrayLength(js_array,
-                                              js_array,
-                                              HType::Smi()));
+      AddInstruction(HLoadNamedField::NewArrayLength(
+            zone, js_array, js_array, HType::Smi()));
 
   ElementsKind to_kind = casted_stub()->to_kind();
   BuildNewSpaceArrayCheck(array_length, to_kind);