#6131: -fprof-auto adds cost centers to INLINE functions
-----------------------------------------+----------------------------------
Reporter: akio | Owner:
Type: bug | Status: new
Priority: normal | Component: Compiler
Version: 7.4.2-rc1 | Keywords:
Os: Linux | Architecture: x86_64 (amd64)
Failure: Incorrect result at runtime | Testcase:
Blockedby: | Blocking:
Related: |
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According to the Section 5.2 of User's Guide, -fprof-auto should add cost
centers only to functions that are not marked INLINE. However GHC 7.4
doesn't respect this.
A simple example:
{{{
foo :: Integer -> Integer
foo x = x + 100
{-# INLINE foo #-}
main = print $ loop (10000000::Int) 10000000000000000000000
where
loop 0 x = x
loop n x = loop (n-1) (foo x)
}}}
Compile and run this like:
{{{
% ghc -prof -fprof-auto -O2 test.hs
% ./test +RTS -p
% grep foo test.prof
}}}
And you will see 'foo' is listed as a cost center.
This happens with GHC 7.4.1 and 7.4.2-rc1
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/6131>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
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