[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):
       Wiki Page:                       |
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Comment (by edmund):

 You're quoting cases of ghc-stage2 segfaulting. Presumably that's because
 ghc-stage1 generated bad code. And I'm guessing both stage1 and stage2 are
 registerised. It would be nice if you could find a simple program that
 gets compiled incorrectly, and to get that you could either run the test
 suite with the stage1 compiler (bearing in mind that some tests are
 expected to fail with a stage1 compiler) or find a way of building a
 registerised stage2 using an unregisterised stage1 (which doesn't appear
 to be entirely straightforward with the way the build infrastructure
 works). What do you think?

 You can tell GDB "info reg" and "x/i 0x0000007fb6db8ca4" to find out how
 it got from there to 0x000006d6f9400288.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10383#comment:37>
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