[GHC] #13380: raiseIO# result looks wrong

[GHC]

#13380: raiseIO# result looks wrong
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        Reporter:  dfeuer            |                Owner:  (none)
            Type:  bug               |               Status:  closed
        Priority:  normal            |            Milestone:  8.2.1
       Component:  Compiler          |              Version:  8.1
      Resolution:  fixed             |             Keywords:  Exceptions
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  Other             |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by dfeuer):

 Replying to [comment:8 simonpj]:
 > Wow.  We said "let's see how bad it is".  Did we measure the perf
 impact, if any?  What's the nofib change?

 It wasn't absolutely horrifying. /da4687f63ffe5a6162e3d7856aa53de048dd0f42
 I'm benchmarking a change right now to manually strictify a few library
 functions that were likely affected; we'll see how that goes. BTW, did you
 see my note on the insufficiency of the note on the I/O hack in the demand
 analyzer?

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13380#comment:9>
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