Add eos evaluation

Change-Id: Ia721ce1df8798fa2771059b4feb12eb56459325b
diff --git a/benchmarks/cleanup/tokenize_simple.pl b/benchmarks/cleanup/tokenize_simple.pl
new file mode 100644
index 0000000..cad1749
--- /dev/null
+++ b/benchmarks/cleanup/tokenize_simple.pl
@@ -0,0 +1,8 @@
+#!/usr/bin/env perl
+use strict;
+use warnings;
+
+foreach (<>) {
+  s/[\s\n\t]+//g;
+  print $_, "\n";
+};