[GHC] #10383: AArch64: get GHC Calling convention working

[GHC]

#10383: AArch64: get GHC Calling convention working
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        Reporter:  erikd                |                Owner:  erikd
            Type:  feature request      |               Status:  new
        Priority:  normal               |            Milestone:  8.0.1
       Component:  Compiler             |              Version:  7.11
      Resolution:                       |             Keywords:
Operating System:  Unknown/Multiple     |         Architecture:  aarch64
 Type of failure:  Building GHC failed  |            Test Case:
      Blocked By:                       |             Blocking:
 Related Tickets:                       |  Differential Rev(s):
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Comment (by edmund):

 By the way, what BuildFlavour are you using?

 https://ghc.haskell.org/trac/ghc/wiki/ImprovedLLVMBackend says: "GHC HEAD
 now requires LLVM 3.6.x"

 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=796343 says:
 "arm64 has some (many) problems
 with older llvm such as the currently Debian default one.
 I tried to reproduce this (really nice) bug report, and I succeeded
 with llvm-3.4, 3.5 and 3.6."

 What's the best way of building GHC without LLVM?

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10383#comment:21>
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