#7803: Superclass methods are left unspecialized
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Reporter: akio | Owner:
Type: bug | Status: new
Priority: normal | Component: Compiler
Version: 7.6.2 | Keywords:
Os: Unknown/Multiple | Architecture: Unknown/Multiple
Failure: Compile-time performance bug | Blockedby:
Blocking: | Related:
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In the attached code, Foo.foo1 gets compiled (by ghc -O2) into a call to
the unspecialized version of Lib.exp5Tail, even though all the related
functions are marked INLINE or SPECIALIZE.
The problem seems to be that GHC creates a top-level overloaded function
after the specialization pass, so the function never gets specialized.
This might be the same issue as #7785, but the workaround I posted there
does not work here.
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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7803>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
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