[GHC] #8561: Clang/iOS: __builtin___clear_cache doesn't exist in clang, use __clear_cache instead

[GHC]

#8561: Clang/iOS: __builtin___clear_cache doesn't exist in clang, use
__clear_cache instead
-------------------------------------+-------------------------------------
        Reporter:  lukexi            |            Owner:
            Type:  bug               |           Status:  new
        Priority:  high              |        Milestone:
       Component:  Compiler          |          Version:  7.6.3
      Resolution:                    |         Keywords:
Operating System:  Other             |     Architecture:  Unknown/Multiple
 Type of failure:  Building GHC      |       Difficulty:  Easy (less than 1
  failed                             |  hour)
       Test Case:                    |       Blocked By:
        Blocking:                    |  Related Tickets:  #8562
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Comment (by Austin Seipp <austin@…>):

 In [changeset:"9fbb8c788d4bdf091709778b42a1294bbdabef95/ghc"]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="9fbb8c788d4bdf091709778b42a1294bbdabef95"
 Rejigger flushExec implementation (#8562, #8561)

 Instead, just don't do anything on x86/amd64, and on !x86, use either A)
 __clear_cache from libgcc, or B) sys_icache_invalidate for OS X (and
 iOS.)

 Signed-off-by: Austin Seipp <austin at well-typed.com>
 }}}

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8561#comment:12>
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