[GHC] #9572: nofib target for just building should be part of validate

[GHC]

#9572: nofib target for just building should be part of validate
-------------------------------------+-------------------------------------
       Reporter:  ezyang             |                   Owner:
           Type:  bug                |                  Status:  new
       Priority:  normal             |               Milestone:
      Component:  NoFib benchmark    |                 Version:  7.8.2
  suite                              |        Operating System:
       Keywords:                     |  Unknown/Multiple
   Architecture:  Unknown/Multiple   |         Type of failure:
     Difficulty:  Unknown            |  None/Unknown
     Blocked By:                     |               Test Case:
Related Tickets:                     |                Blocking:
                                     |  Differential Revisions:
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 nofib is never run during validates, which makes it easy to bitrot (c.f.
 AMP changes). It would be better if:

 1. We had a build target for just building nofib tests, not running them,
 (maybe optionally with optimizations turned off, or just `-fno-code`) and
 2. This build target was executed during validates

 This should strike a balance between wanting to avoid having to spend a
 lot of time running the benchmarks on validate, while still exercising the
 nofib tests to some degree.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9572>
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