Samuel Bronson wrote:
Sun Apr 6 09:47:55 EDT 2008 Samuel Bronson <[EMAIL PROTECTED]>
* Implement #2191 (traceCcs# -- prints CCS of a value when available)
Apparantly, tagged objects are passed, contrary to the comments for
UNTAG and GETTAG in Cmm.h. So I untag them. *sigh*.
Sorry about that comment, I think it was just out of date (actually I
don't remember writing it, so maybe it wasn't me). FWIW, the following
wiki page is a correct description of how pointer tagging works, I believe:
http://hackage.haskell.org/trac/ghc/wiki/Commentary/Rts/HaskellExecution/PointerTagging
Regarding your patch, it looks like the primitive should be entering R2,
rather than returning it, since it might not be evaluated.
Cheers,
Simon
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