#4928: Add primops for copying/cloning an array
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Reporter: tibbe | Owner:
Type: feature request | Status: new
Priority: normal | Component: Runtime System
Version: 7.0.1 | Keywords:
Testcase: | Blockedby:
Os: Unknown/Multiple | Blocking:
Architecture: Unknown/Multiple | Failure: None/Unknown
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Comment(by pumpkin):
The patch is incomplete. I've written out what I think should be in the
copyArray# and copyMutableArray# primops but the clones and freeze/thaw
are still empty stubs (so don't call them!). I'm mostly looking for
comments about the card marking adjustments, which are new and untested
since my original patch.
It would be slightly smarter to set the boundary cards to the conjunction
of the source and destination cards at that point, but setting them both
to 1 unconditionally was simpler.
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/4928#comment:2>
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