Optimistically assume that elements IC only transition once.

test/mjsunit/elements-kind.js

Index: test/mjsunit/elements-kind.js
diff --git a/test/mjsunit/elements-kind.js b/test/mjsunit/elements-kind.js
index 26b3c7807b35ea1f93ab218bed326abcb12faad2..508a6b3cee2c932ec96d2eee8ce7ef1414e9b056 100644
--- a/test/mjsunit/elements-kind.js
+++ b/test/mjsunit/elements-kind.js
@@ -224,9 +224,11 @@ if (support_smi_only_arrays) {
   for (var i = 0; i < 3; i++) {
     convert_mixed(doubles, "three", elements_kind.fast);
   }
+  convert_mixed(construct_smis(), "three", elements_kind.fast);
+  convert_mixed(construct_doubles(), "three", elements_kind.fast);
+  %OptimizeFunctionOnNextCall(convert_mixed);
   smis = construct_smis();
   doubles = construct_doubles();
-  %OptimizeFunctionOnNextCall(convert_mixed);
   convert_mixed(smis, 1, elements_kind.fast);
   convert_mixed(doubles, 1, elements_kind.fast);
   assertTrue(%HaveSameMap(smis, doubles));