[GHC] #13143: NOINLINE and worker/wrapper

[GHC]

#13143: NOINLINE and worker/wrapper
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        Reporter:  simonpj           |                Owner:
            Type:  bug               |               Status:  closed
        Priority:  normal            |            Milestone:  8.2.1
       Component:  Compiler          |              Version:  8.0.1
      Resolution:  fixed             |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):  D3046
       Wiki Page:                    |
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Comment (by simonpj):

 >  I guess the test suite did not come up with anything, but does this
 interfere with rules? A rule might mention the NOINLINE thing, but aftetr
 W/W, the worker remains, and a rule will no longer fire.

 That's a worry for all functions; but the wrapper always get an inline
 activation that allows it to inline only in the last phase. See `Note
 [Wrapper activation]` in `WorkWrap`.

 What you say has merit; but it was bad bad bad before we made this change.
 If there's actually a problem with this new story, let's see it.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13143#comment:6>
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