Resurrecting ticky code
mlen at mlen.pl
Thu Nov 6 11:57:44 UTC 2014
On Tue, Nov 04, 2014 at 09:52:23AM +0000, Simon Peyton Jones wrote:
> We don’t have "vectored returns" any more, so you can drop that one.
> For "magic eight" there are some native-wordsize constants defined already.
> E.g. see how PrelRules.wordSizeInBits is computed.
As far as I understood that constant in ticky code was associated with number
of bins in the histogram, so I need to find a way to define it both in C and in
Haskell (preferably once). Actually there are nine bins, but eight is the index
of the last one.
> Thanks to Jan for helping
> | -----Original Message-----
> | From: ghc-devs [mailto:ghc-devs-bounces at haskell.org] On Behalf Of
> | Mateusz Lenik
> | Sent: 03 November 2014 17:19
> | To: ghc-devs at haskell.org
> | Subject: Resurrecting ticky code
> | Hi *,
> | Recently I started working on resurrecting ticky code and got to
> | the point where I can compile and run bumpHistogram as well as
> | accompanying code in RTS.
> | Work in progress version can be found at , but there are few things
> | remaining to get it working:
> | * missing calls to tickyReturnNewCon, tickyUnboxedTupleReturn and
> | tickyVectoredReturn need to be added. Unfortunately I'm not familiar
> | with the
> | code enough to find the right place to insert them.
> | * magic eight needs to be replaced by a constant both Haskell and C
> | files.
> | Preprocessor macro seems to be the simplest choice here, however I
> | don't find
> | it the cleanest way to do it.
> | I would be very grateful if someone could take a look and point me
> | into the right direction.
> | Best,
> | Mateusz
> | 1: https://ghc.haskell.org/trac/ghc/ticket/8308
> | 2: https://github.com/mlen/ghc/compare/ticky
> | --
> | Mateusz Lenik
> | GPG: B865 E86A D36C 11A5 C1F8 C1D9 AAD4 CEC9 6B94 92C4
GPG: B865 E86A D36C 11A5 C1F8 C1D9 AAD4 CEC9 6B94 92C4
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