#4414: scc001 fails: one SCC entered 0 times; another not mentioned when
optimisation is on
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Reporter: igloo | Owner: simonmar
Type: bug | Status: new
Priority: normal | Milestone: 7.0.2
Component: Profiling | Version: 6.12.3
Keywords: | Testcase:
Blockedby: | Difficulty:
Os: Unknown/Multiple | Blocking:
Architecture: Unknown/Multiple | Failure: None/Unknown
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Comment(by simonmar):
We could certainly make `-fhpc` work with profiling (maybe it already
does). We could also have a mode for `-fhpc` which only puts ticks on
top-level functions rather than every subexpression, to reduce the
overhead.
However, I suppose the downside for using HPC for entry counts is that the
HPC data is flat: no call stacks like we get with profiling.
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/4414#comment:8>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
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