Stg-lint and bootstrapping (fails?)

Gabor Greif ggreif at gmail.com
Mon Aug 21 18:21:30 UTC 2017


Hi Simon,

for me it happens on many files that are compiled with

 $ make GhcStage2HcOpts="-O1 -g"

while the stage1 compiler is active.

Tomorrow I can add a concrete invocation.

Cheers,

     Gabor

Em seg, 21 de ago de 2017 às 17:49, Simon Peyton Jones <
simonpj at microsoft.com> escreveu:

> |  Oh dear, then I've really misunderstood the intent of this warning. I've
> |  been noticing these during the GHC build for quite some time now.
>
> Really?
>
> After stumbling on #14142, I removed -dno-debug-output from mk/flavours/
> validate.mk and re-validated.  Not a single occurrence of
>
> |  > | WARNING: file compiler/simplCore/OccurAnal.hs, line 2695
> |  > |   OccurAnal failed to rediscover join point(s): [go58_akKa]
>
> How can I reproduce what you are seeing?
>
> Simon
>
> |  -----Original Message-----
> |  From: Ben Gamari [mailto:ben at smart-cactus.org]
> |  Sent: 19 August 2017 16:54
> |  To: Simon Peyton Jones <simonpj at microsoft.com>; Gabor Greif
> |  <ggreif at gmail.com>
> |  Cc: ghc-devs <ghc-devs at haskell.org>
> |  Subject: RE: Stg-lint and bootstrapping (fails?)
> |
> |  Simon Peyton Jones <simonpj at microsoft.com> writes:
> |
> |  > | WARNING: file compiler/simplCore/OccurAnal.hs, line 2695
> |  > |   OccurAnal failed to rediscover join point(s): [go58_akKa]
> |  >
> |  > That shouldn't happen!  If you can make a repro case, please open a
> |  ticket.
> |  >
> |  Oh dear, then I've really misunderstood the intent of this warning. I've
> |  been noticing these during the GHC build for quite some time now.
> |
> |  Cheers,
> |
> |  - Ben
>
>
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