-ddump-rules does not list all rules in effect

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

}}}

Trac metadata

Trac field	Value
Version	6.10.4
Type	Bug
TypeOfFailure	OtherFailure
Priority	normal
Resolution	Unresolved
Component	Compiler
Test case
Differential revisions
BlockedBy
Related
Blocking
CC
Operating system
Architecture