[GHC] #8250: cgrun072 (optllvm) failing

[GHC]

#8250: cgrun072 (optllvm) failing
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        Reporter:  leroux            |            Owner:
            Type:  bug               |           Status:  patch
        Priority:  normal            |        Milestone:
       Component:  Compiler (LLVM)   |          Version:  7.6.3
      Resolution:                    |         Keywords:
Operating System:  Unknown/Multiple  |     Architecture:  Unknown/Multiple
 Type of failure:  Runtime crash     |       Difficulty:  Unknown
       Test Case:  cgrun072          |       Blocked By:
        Blocking:                    |  Related Tickets:  7902
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Comment (by Austin Seipp <austin@…>):

 In [changeset:c8cd4dfa480bd259bb889c3e679393ffa426abb3/testsuite]:
 {{{
 #!CommitTicketReference repository="testsuite"
 revision="c8cd4dfa480bd259bb889c3e679393ffa426abb3"
 Fix up cgrun072 a bit (#8250)

 This includes:

  * Adding a test for bswap16 with a low byte >= 128
  * Also test the byteSwapN functions from GHC.Word, tested both INLINE
    and not INLINE, so we test both independent parts: the compilation of
    base, and the backend compiling the code *using* base.
  * Fix the usage of byteSwapN# primitives in the test, by masking off
  * the higher bits when storing the results in Word16/Word32.

 Thanks to Reid Barton for the investigation.

 Authored-by: Reid Barton <rwbarton at gmail.com>
 Signed-off-by: Austin Seipp <austin at well-typed.com>
 }}}

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8250#comment:6>
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