#3703: -ddump-rules does not list all rules in effect
-------------------------------+--------------------------------------------
Reporter: nomeata | Owner:
Type: bug | Status: new
Priority: normal | Component: Compiler
Version: 6.10.4 | Keywords:
Os: Linux | Testcase:
Architecture: x86_64 (amd64) | Failure: None/Unknown
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Hi,
the attached code has a function breakOn which calls "break (c==)" from
Bytestring. That function has a rewrite rule, rewriting it to "breakChar
c". I’d expect "ghc -ddump-rules" to tell me that this function was
called, but that is not the case:
{{{
$ ghc -O -ddump-rules --make breakOn.hs
[1 of 1] Compiling Main ( breakOn.hs, breakOn.o )
==================== Transformation rules ====================
Local rules
Imported rules
==================== Top-level specialisations ====================
Linking breakOn ...
}}}
But in fact, the rule does fire, as this excert from "ghc -ddump-
inlinings" shows:
{{{
Considering inlining
bytestring-0.9.1.4:Data.ByteString.Char8.breakChar{v r3m} [gid]
active: False
arg
infos [False]
interesting continuation BoringCtxt
is
value: True
is
cheap: True
guidance IF_ARGS 2 [0 0] 4 6
ANSWER
= NO
}}}
}}}
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/3703>
GHC <http://www.haskell.org/ghc/>
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