On Sun, Jul 25, 2010 at 08:33:10PM -0300, Felipe Lessa wrote:

In case someone on this list missed this blog post: http://lhc-compiler.blogspot.com/2010/07/great-haskell-compiler-shootout.htm...

It is nice to see JHC being superior than GHC in some tests. =)

Cool, I had seen an earlier version of it, good to see it updated with 0.7.5. I am working on getting all the compile errors exposed by this fixed, there were quite a few minor parsing/typechecker bugs that were minor in that they had easy workarounds, but given a large enough amount of code in the wild you were bound to run into one or another of them. I have been able to fix the vast majority of them for 0.7.6. I have not looked much into the ones where jhc performs slowly, but I can pretty much guarentee at least a few of them are due to deforestation, hitting the right list deforestation can make or break your compiler when it comes to speed. I plan on addressing this issue in an upcoming release, probably not 0.7.6 though. I need to make the RULES mechanism a bit more robust and less resource intensive before I throw the large number of RULES a good deforester requires at it. It also looks like a few of the tests are failing due to using non-portable libraries when they can be trivially made haskell 98 by replacing a few imports. John -- John Meacham - ⑆repetae.net⑆john⑈ - http://notanumber.net/