Re: Alternative to isTypeLevPoly

Hmm, that's strange, both isTypeLevPoly and typeHasFixedRuntimeRep have the same precondition: the kind of the type is of the form TYPE rep. So they should panic in the same circumstances. Can you give a bit more information? What panics are you running into? On Wed, 14 Sept 2022 at 18:40, Csaba Hruska wrote:

Hi, Thanks for the tip, I've tried it and it behaves differently than isTypeLevPoly. I can get panic when querying the reptype for fixed reptypes. That means isTypeLevPoly semantically is not the same as the negated result of typeHasFixedRuntimeRep.

On Wed, 14 Sep 2022, 18:19 Sam Derbyshire, wrote:

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Hi Csaba,

I think you want the function typeHasFixedRuntimeRep from GHC.Core.Type.

Best,

Sam

On Wed, 14 Sept 2022 at 18:12, Csaba Hruska wrote:

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Hello GHC Devs,

I've noticed that the `isTypeLevPoly` function has been removed from GHC since 9.4. I used it to decide the validity of querying the representation type of every value in the STG IR. It was mandatory to prevent GHC panics, because there are a lot of partial functions in GHC. Is there an alternative to `isTypeLevPoly` in GHC 9.4?

Best regards, Csaba Hruska _______________________________________________ ghc-devs mailing list ghc-devs@haskell.org http://mail.haskell.org/cgi-bin/mailman/listinfo/ghc-devs