Cannot build a profiled compiler (probaly DPH related)
benl at ouroborus.net
Tue Nov 22 14:02:10 CET 2011
On 22/11/2011, at 22:29 , Manuel M T Chakravarty wrote:
> Simon Peyton-Jones:
>> | > I don't know why you're tripping over these make dependencies, but you
>> | > could hack around the problem by deleting the dependencies from
>> | > libraries/dph/ghc.mk in your local copy.
>> | For some reason DPH is incompatible with GhcProfiled=YES. I never got
>> | around to figuring out why, I just deleted libraries/dph (not in my
>> | validate tree, of course).
>> Could the build system knock out dph when GhcProfiled=YES, thereby automating Simon's trick, and saving us each from re-inventing.
> Didn't you just suggest to Ben on the phone to use GHC profiling to look into the code explosion with inlining and Barnes-Hut?
I remember trying to profile the compiler with DPH last year and not being able to make it work.
There is this in DynFlags:
| turn_on && rtsIsProfiled
= addErr "You can't use Template Haskell with a profiled compiler"
TH is currently only used with the old dph-lifted-copy library, not the new dph-lifted-vseg, but both are built by default.
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