#6110: Data.Vector.Unboxed performance regression of 7.4.1 relative to 7.0.4
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Reporter: mdgabriel | Owner: pcapriotti
Type: bug | Status: closed
Priority: high | Milestone: 7.4.3
Component: Compiler | Version: 7.4.1
Resolution: fixed | Keywords: Vector Performance
Regression
Os: Linux | Architecture: x86
Failure: Runtime performance bug | Difficulty: Unknown
Testcase: | Blockedby:
Blocking: | Related: #6111
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Changes (by mdgabriel):
* status: infoneeded => closed
* resolution: => fixed
Comment:
@pcapriotti and @igloo:
I built the head of GHC with the changeset
c7a8941b04541789e60950bb126902effae0ccab of #6110, and this recovered the
vast majority of the performance difference that I observed between 7.0.4
and 7.4.1.
The version 7.4.1 is still slower than 7.0.4 for me, but I most likely
would not have noticed this difference if the above changeset had already
been in place. For me, this ticket is closed.
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/6110#comment:14>
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