[GHC] #14660: Improve +RTS -t --machine-readable

[GHC]

#14660: Improve +RTS -t --machine-readable
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           Reporter:  duog           |             Owner:  (none)
               Type:  task           |            Status:  new
           Priority:  normal         |         Milestone:
          Component:  Runtime        |           Version:  8.3
  System                             |
           Keywords:                 |  Operating System:  Unknown/Multiple
       Architecture:                 |   Type of failure:  None/Unknown
  Unknown/Multiple                   |
          Test Case:                 |        Blocked By:
           Blocking:                 |   Related Tickets:
Differential Rev(s):                 |         Wiki Page:
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 The output of +RTS -t --machine-readable is a shown Haskell list, so we
 can easily add fields. Let's add everything shown by +RTS -s .
 I've posted a rough patch that does that at Phab:D4303.

 If this is a good idea, I'd like to also add the following:
 * a data structure and parsing function to GHC.Stats in base.
 * The ghc version as a field in the --machine-readable output
 * The rts ways as a field in the --machine-readable output

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14660>
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