#5623: GHC 7.2.1 Performance Regression: Vector
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Reporter: dterei | Owner:
Type: bug | Status: new
Priority: normal | Component: Compiler
Version: 7.3 | Keywords:
Testcase: | Blockedby:
Os: Unknown/Multiple | Blocking:
Architecture: Unknown/Multiple | Failure: Runtime performance bug
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Comment(by rl):
Just to spam a little more, it seems that the HEAD happily duplicates all
computations on unboxed types. It even duplicates `x+x` in this example:
{{{
foo :: Float -> Float
foo x = let y = x+x in y+y
}}}
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/5623#comment:3>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
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