[GHC] #9125: int-to-float conversion broken on ARM

GHC ghc-devs at haskell.org
Tue Jul 29 16:55:16 UTC 2014


#9125: int-to-float conversion broken on ARM
-------------------------------------+-------------------------------------
              Reporter:  Ansible     |            Owner:
                  Type:  bug         |           Status:  infoneeded
              Priority:  highest     |        Milestone:  7.8.4
             Component:  Compiler    |          Version:  7.8.3
  (CodeGen)                          |         Keywords:
            Resolution:              |     Architecture:  arm
      Operating System:              |       Difficulty:  Unknown
  Unknown/Multiple                   |       Blocked By:
       Type of failure:  Incorrect   |  Related Tickets:
  result at runtime                  |
             Test Case:              |
              Blocking:              |
Differential Revisions:              |
-------------------------------------+-------------------------------------

Comment (by rwbarton):

 Replying to [comment:16 amurrayc]:
 > Replying to [comment:9 rwbarton]:
 >
 > As per the warning on
 https://ghc.haskell.org/trac/ghc/wiki/Building/CrossCompiling/iOS I am
 using LLVM 3.0 binaries from
 http://llvm.org/releases/3.0/clang+llvm-3.0-x86_64-apple-darwin11.tar.gz
 >
 > I can try recompiling with 3.5.  Would it still be useful to have the
 -ddump-cmm?  I just got back to my computer after a few days away but I
 could easily do that.

 Let's figure out whether this is a bug in GHC or LLVM before we change any
 variables like the version of LLVM. I think LLVM 3.5 won't work with GHC
 7.8 anyways. (Ben?)

 Yes, the -ddump-cmm output would still be useful. If you still have your
 built ghc tree, then you can follow the steps I listed above, skipping the
 first step. Thanks!

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9125#comment:17>
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