Re: Looking for GHC compile-time performance tests

2016-05-07 Thread Thomas DuBuisson
Similarly, please see https://ghc.haskell.org/trac/ghc/ticket/12032 for a regression when using many top-level cases in equational style. I haven't looked at core, it's possible this issue is the same as ticket 12028. Also please note I am _not_ on the -dev list at present so that list is not

Re: Looking for GHC compile-time performance tests

2016-05-06 Thread Thomas DuBuisson
On Thu, May 5, 2016 at 5:52 AM, Ben Gamari wrote: > > So, if you would like to see your program's compilation time improve > in GHC 8.2, put some time into reducing it to something minimal, submit > it to us via a Trac ticket, and let us know in this thread. Please see

Re: Looking for GHC compile-time performance tests

2016-05-05 Thread Carter Schonwald
It also helped that the test suite got added back to the main cabal. And the test suite took a WHILE, due to some sort of coercion seize blowup that I think was fixed in 8,0. But yes. Definitely vector build times decayed. Partly due to the shift to the general bundle rep, and partly due to ...

RE: Looking for GHC compile-time performance tests

2016-05-05 Thread Simon Peyton Jones
; | Cc: glasgow-haskell-users@haskell.org | Subject: Re: Looking for GHC compile-time performance tests | | vector-algorithms has gotten slower to both compile and for users rather | consistently during each release throughout the 7.x lifecycle. That may serve | as a good torture test as well. | | >

Re: Looking for GHC compile-time performance tests

2016-05-05 Thread David Feuer
containers compile times have generally gotten slower from version to version. On Thu, May 5, 2016 at 4:22 PM, Erik de Castro Lopo wrote: > Ben Gamari wrote: > >> So, if you would like to see your program's compilation time improve >> in GHC 8.2, put some time into reducing

Re: Looking for GHC compile-time performance tests

2016-05-05 Thread Edward Kmett
vector-algorithms has gotten slower to both compile and for users rather consistently during each release throughout the 7.x lifecycle. That may serve as a good torture test as well. > On May 6, 2016, at 6:22 AM, Erik de Castro Lopo wrote: > > Ben Gamari wrote: > >> So,

Re: Looking for GHC compile-time performance tests

2016-05-05 Thread Erik de Castro Lopo
Ben Gamari wrote: > So, if you would like to see your program's compilation time improve > in GHC 8.2, put some time into reducing it to something minimal, submit > it to us via a Trac ticket, and let us know in this thread. The vector package is probably a good candidate. Compling vector slowed

Looking for GHC compile-time performance tests

2016-05-05 Thread Ben Gamari
tl;dr. Do you have a Haskell project which GHC now compiles more slowly than in the past? If you would like to see your program's compilation time improve in 8.2, reduce it to a minimal testcase, and provide it to us via Trac. Good news everyone, GHC 8.2 will be a release