[ELPA] New package: elisp-benckmarks

[Andrea Corallo]

Hi all, as suggested I'd like submit a simple ELPA package to benchmark
the elisp implementation.

The idea is that is possible to add benchmarks just deposing the new
test into the 'benchmarks' directory of the package following a name
convention for the entry point function.

Ex: 'foo.el' has to have 'foo-entry' as entry point for the test.

Calling `elisp-benchmarks-run' the whole list of benchmarks is executed
`elb-runs' times.  A summary of the results is then presented.

This is the output on my machine:
"
* Results

  | test           | non-gc avg (s) | gc avg (s) | gcs avg | tot avg (s) | tot 
avg err (s) |
  
|----------------+----------------+------------+---------+-------------+-----------------|
  | bubble-no-cons |          16.46 |       0.05 |       4 |       16.50 |      
      0.50 |
  | bubble         |           6.03 |       5.85 |     480 |       11.88 |      
      0.19 |
  | fibn-rec       |           8.21 |       0.00 |       0 |        8.21 |      
      0.23 |
  | fibn-tc        |           7.34 |       0.00 |       0 |        7.34 |      
      0.05 |
  | fibn           |          14.00 |       0.00 |       0 |       14.00 |      
      0.22 |
  | inclist        |          18.22 |       0.02 |       1 |       18.23 |      
      0.52 |
  | listlen-tc     |           6.96 |       0.00 |       0 |        6.96 |      
      0.10 |
  | pidigits       |           6.65 |       6.36 |     457 |       13.01 |      
      0.20 |
  
|----------------+----------------+------------+---------+-------------+-----------------|
  | total          |          83.87 |      12.28 |     942 |       96.15 |      
      0.84 |
"

Regarding the included tests I've mostly taken what I've used to test
gccemacs but I had to strip out nbody and dhrystone because these has
been ported by a colleague of mine.  My understanding is that he wants
to do the paper-works so we can probably add these later.

License-wise I think the only concern would be with pidigits.  The
original is licensed under a "Revised BSD license".

https://salsa.debian.org/benchmarksgame-team/archive-alioth-benchmarksgame/blob/master/contributed-source-code/benchmarksgame/pidigits/LICENSE

For my basic understanding this should be GPL compliant therefore should
be just sufficient to re-license it.  Please correct me if I'm wrong.

Does this make the job?  Feedback are welcome.

Andrea

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