#8351: Arrays are always allocated out-of-line
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Reporter: tibbe | Owner:
Type: bug | Status: new
Priority: normal | Milestone:
Component: Compiler | Version: 7.6.3
Keywords: | Operating System: Unknown/Multiple
Architecture: Unknown/Multiple | Type of failure: None/Unknown
Difficulty: Unknown | Test Case:
Blocked By: | Blocking:
Related Tickets: |
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unordered-containers uses lots of small arrays (length <= 16). These
arrays are always allocated out-of-line by a call to `allocate`. I suspect
this is bad for performance. We should look into supporting inline-
allocation, perhaps by using a new `newSmallArray#` primop and/or by
spotting calls to `newArray#` with a small, statically-known size.
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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8351>
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