[llvm-commits] [PATCH][LNT] Add support for selection of timing statistic (user or real time)

[David Blaikie]

Hi Daniel (& others),

Here's a couple of patches that add an option to the LNT nt runner to
allow the selection of statistic to report (user time or real time) &
includes the necessary plumbing through the test-suite to propagate
this information (rather than passing a flag down through the
test-suite strata, this elevates both stats (we could add sys time for
symmetry at some point - and/or, more broadly, we could also stop
doing the aggregation (of multisource per-file stats into single
per-test stats) down in the test-suite & let LNT have more fine
grained information about the sub-parts of a test case's timing) up
into the simple report.

[I removed one instance of the 'summary' parsing in timeit.c - it
seems there were two instances of it. If there's a reason for the
apparent duplication I'd love to hear it - then add it back in with a
comment explaining that. I also removed the 'program' timing there -
the reports currently can just deliberately pick which statistics they
want. It seems like only the nightly and simple reports were using
these values, so I've updated those. I was wondering if I could also
remove the 'exit' lines so the summaries just look like time(1)
output, but I haven't got there yet - the exit lines are used from
these files in some places. Perhaps there are other sources they could
use instead]

Anyone have some thoughts on this approach or future work along these lines?

- David
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