[GHC] #6084: Add stg_ap_pnnv and related call patterns

[GHC]

#6084: Add stg_ap_pnnv and related call patterns
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        Reporter:  SimonMeier        |            Owner:  simonmar
            Type:  feature request   |           Status:  patch
        Priority:  high              |        Milestone:  7.8.1
       Component:  Runtime System    |          Version:  7.7
      Resolution:                    |         Keywords:
Operating System:  Unknown/Multiple  |     Architecture:  Unknown/Multiple
 Type of failure:  None/Unknown      |       Difficulty:  Unknown
       Test Case:                    |       Blocked By:
        Blocking:  8313              |  Related Tickets:
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Comment (by simonmar):

 Thanks for revising the patch.

 I spotted one problem: you're referring to `fun` in two places, which
 might duplicate some code.  The original patch put it in a temp variable
 for this reason.  It's a good idea to peer at the Cmm code being generated
 to see whether it looks as you expect.

 We'll need a test for this in `testsuite/codeGen`.

 The nofib results are slightly suspicious: this patch should never
 increase allocation, but there's a 0.1% increase for `cacheprof`.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/6084#comment:30>
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