[parrot/parrot] e8a0ab: [GH #837] Add benchmark to test encoding slowdown

[GitHub]

  Branch: refs/heads/gh837_concat
  Home:   https://github.com/parrot/parrot
  Commit: e8a0ab4483a793388f4bfdfee3d81b4ce3b80c9d
      https://github.com/parrot/parrot/commit/e8a0ab4483a793388f4bfdfee3d81b4ce3b80c9d
  Author: Reini Urban <rurban at cpanel.net>
  Date:   2012-09-20 (Thu, 20 Sep 2012)

  Changed paths:
    A examples/benchmarks/stress_stringsu.pir

  Log Message:
  -----------
  [GH #837] Add benchmark to test encoding slowdown

stress_stringsu.pir tests encoding via sprintf and concat.
The fixed version is only a bit slower then the old broken version.
13.666s (broken) vs 13.506s (fixed) vs 3.022s (without encoding).

So fixing the encoding representation as STRING* in SREG and consts 'U'
is a worthwile goal.