[GHC] #8380: Numerous testsuite failures on ARM due to missing mkJumpToAddr

[GHC]

#8380: Numerous testsuite failures on ARM due to missing mkJumpToAddr
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        Reporter:  bgamari           |            Owner:
            Type:  bug               |           Status:  new
        Priority:  normal            |        Milestone:
       Component:  Compiler          |          Version:  7.7
      Resolution:                    |         Keywords:  patch
Operating System:  Unknown/Multiple  |     Architecture:  arm
 Type of failure:  None/Unknown      |       Difficulty:  Unknown
       Test Case:                    |       Blocked By:
        Blocking:                    |  Related Tickets:
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Comment (by thoughtpolice):

 It turns out we don't need `__clear_cache` because libffi (correctly)
 calls it for us when emitting trampolines/executable code.

 I'm validating this patch on my ODROID. It will also close #7794.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8380#comment:2>
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