GHC 6.8.1 is impressive!

Lennart Augustsson lennart at
Fri Nov 9 02:24:50 EST 2007

I'd like to second that.  6.8 is quite an improvement.  Well done!

  -- Lennart

On Nov 8, 2007 12:18 PM, Ravi Nanavati <ravi at> wrote:
> I just finished a running Bluespec's regression suite on a version of
> our tools compiled with ghc 6.8.1. The results were impressive on two
> fronts:
> 1. All of our tests (almost 14,000) had the same behavior as with ghc 6.6.1
> 2. Our Haskell code was roughly 33% faster (relative to ghc 6.6.1). It
> seems that pointer-tagging made a big difference for our code base
> (since, if I'm reading the release notes correctly, constructor
> specialization isn't in yet).
> We just wanted to take a moment to say that we were pleasantly
> surprised by ghc 6.8.1 (so much so that we're going to try and use it
> for released builds sooner than we would have otherwise planned) and
> to thank everyone involved for the effort they put into it.
> Thank you,
>  - Ravi Nanavati (and the rest of Bluespec, Inc.)
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