[GHC] #14244: ghc-prim: hs_atomicread* and hs_atomicwrite* missing barriers

[GHC]

#14244: ghc-prim: hs_atomicread* and hs_atomicwrite* missing barriers
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        Reporter:  trommler          |                Owner:  trommler
            Type:  bug               |               Status:  closed
        Priority:  high              |            Milestone:  8.4.1
       Component:  Prelude           |              Version:  8.2.1
      Resolution:  fixed             |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Incorrect result  |  Unknown/Multiple
  at runtime                         |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:  #12537            |  Differential Rev(s):  Phab:D4009
       Wiki Page:                    |
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Comment (by trommler):

 If that helps, GCC 4.7 and up is only a build-time requirement. There are
 newer versions of GCC available for RHEL and CentOS
 as part of the Red Hat Developer Toolset for instance.

 In the case of the LLVM-backend you need a fairly recent (and IIRC an
 exact) version both at build-time and at run-time.
 If you are going to install LLVM then you could use clang that comes with
 it.

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14244#comment:8>
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