#5916: runST isn't free
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Reporter: tibbe | Owner:
Type: bug | Status: new
Priority: normal | Milestone:
Component: Compiler | Version: 7.4.1
Keywords: | Os: Unknown/Multiple
Architecture: Unknown/Multiple | Failure: None/Unknown
Difficulty: Unknown | Testcase:
Blockedby: | Blocking:
Related: |
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Changes (by simonmar):
* difficulty: => Unknown
Comment:
I chatted with tibbe a little on IRC about this, and one conclusion is
that we should probably try harder to inline `runSTRep`. It has to be
inlined very late in order to avoid bad things happening; indeed we used
to try to do that, but it didn't work (see the comment on `runSTRep`). If
we did this, then the allocation of the function closure for passing to
`runST` could disappear, which might be critical in an inner loop.
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/5916#comment:1>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
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