#7460: Double literals generated bad core
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Reporter: tibbe | Owner:
Type: bug | Status: new
Priority: normal | Milestone:
Component: Compiler | Version: 7.4.2
Keywords: | Os: Unknown/Multiple
Architecture: Unknown/Multiple | Failure: Runtime performance bug
Difficulty: Unknown | Testcase:
Blockedby: | Blocking:
Related: |
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Comment(by tibbe):
Replying to [comment:2 tibbe]:
> Changing the use of `fromIntegral` to
>
> {{{
> word2Double x = D# (int2Double# (word2Int# x))
> }}}
>
> works around the issue in my case.
Except that it doesn't always generate the correct value. The point
remains though, we need an efficient `word2Double` conversion to be
inserted into the core.
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7460#comment:3>
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