[GHC] #10870: PPC.Ppr: Shift by 32 bits is not allowed.

[GHC]

#10870: PPC.Ppr: Shift by 32 bits is not allowed.
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        Reporter:  nomeata             |                Owner:
            Type:  bug                 |               Status:  infoneeded
        Priority:  normal              |            Milestone:  7.10.3
       Component:  Compiler (CodeGen)  |              Version:  7.10.2
      Resolution:                      |             Keywords:
Operating System:  Unknown/Multiple    |         Architecture:  powerpc
 Type of failure:  None/Unknown        |            Test Case:
      Blocked By:                      |             Blocking:
 Related Tickets:                      |  Differential Rev(s):  Phab:D1322
       Wiki Page:                      |
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Changes (by trommler):

 * status:  new => infoneeded


Comment:

 Replying to [comment:12 nomeata]:
 > Sorry to be the bringer of bad news, but this seems to be still
 occurring in 7.10.3-rc1:
 >
 > https://buildd.debian.org/status/fetch.php?pkg=haskell-vector-
 algorithms&arch=powerpc&ver=0.7.0.1-2&stamp=1446804253
 Can you try the above patch  (0001-PPC-nativeGen-fix-shift-right-
 arithmetic-31-bit.patch)?

 I could only eye-ball the code (no 32 bit installation here), but I am
 pretty sure this is the only case left that triggers the panic you are
 seeing.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10870#comment:13>
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