#5256: code in an "else" branch that is never executed still does influence
runtime (Vectorizer?)
-------------------------------+--------------------------------------------
Reporter: j.waldmann | Owner:
Type: bug | Status: new
Priority: normal | Component: Compiler
Version: 7.0.3 | Keywords:
Testcase: | Blockedby:
Os: Linux | Blocking:
Architecture: x86_64 (amd64) | Failure: None/Unknown
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the following code contains
{{{
if foo then ... else bar
}}}
where foo evaluates to True.
If I replace this by
{{{
if foo then ... else undefined
}}}
then execution gets faster drastically.
The code uses Data.Vector.Unboxed.
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/5256>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
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