#4414: scc001 fails: one SCC entered 0 times; another not mentioned when
optimisation is on
---------------------------------+------------------------------------------
Reporter: igloo | Owner:
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
---------------------------------+------------------------------------------
Comment(by simonpj):
For the `-O` case I've located the bug. We were optimising
{{{
case _scc_ "foo" (C a b) of
C a b -> e
}}}
to `e`, which loses the entry count on "foo". I'll disable that, which
will make profiled programs less optimised, but should get the right
counts!
Simon
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/4414#comment:2>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
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