PUBLIC
Never mind, I think I got myself confused about different stages of the
pipeline. The order of binds generated by Prep is correct, what was tripping me
up really was that sat_s2iCp is a local Id bound by a top-level bind. But
that's OK, I handle this situation now and everything else works out. Sorry!
-----Original Message-----
From: ghc-devs <ghc-devs-boun...@haskell.org> On Behalf Of ÉRDI Gergo
Sent: Thursday, November 3, 2022 5:47 PM
To: GHC Devs <ghc-devs@haskell.org>
Subject: [External] Is Prep supposed to keep thing in (reverse) dependency
order?
ATTENTION: This email came from an external source. Do not open attachments or
click on links from unknown senders or unexpected emails. Always report
suspicious emails using the Report As Phishing button in Outlook to protect the
Bank and our clients.
Hi,
I was under the impression that the Prep'd Core is still in reverse dependency
order, i.e. if definition A refers to intra-module definition B, then A's
binding will always be preceding B's binding. I've been exploiting this
(hopefully not made-up and accidental!) property in my work so far.
However, for the following input:
```
$s$fFunctorFun_$sfmap
:: forall a b.
(a -> b)
-> Fun '[AnnexType, CSASource, Currency, String] a
-> Fun '[AnnexType, CSASource, Currency, String] b $s$fFunctorFun_$sfmap
= (\ (@a)
(@b)
(f :: a -> b)
(g :: Fun '[AnnexType, CSASource, Currency, String] a)
(x1 :: AnnexType) ->
let {
g1 :: TFun '[CSASource, Currency, String] a
g1
= (g `cast` <Co:32>) x1 } in
(\ (x2 :: CSASource) ->
$s$fApplicativeFun_$s$fFunctorFun2
@Currency
@a
@b
f
(((g1 `cast` <Co:55>) x2)
`cast` <Co:22>)
`cast` <Co:148>)
`cast` <Co:125>)
```
I am getting the following output from Prep:
```
sat_s2iCp
:: forall a b.
(a -> b)
-> Fun '[AnnexType, CSASource, Currency, String] a
-> Fun '[AnnexType, CSASource, Currency, String] b sat_s2iCp
= (\ (@a)
(@b)
(f :: a -> b)
(g :: Fun '[AnnexType, CSASource, Currency, String] a)
(x1 :: AnnexType) ->
let {
g1 :: TFun '[CSASource, Currency, String] a
g1
= (g `cast` <Co:32>) x1 } in
let {
sat_s2iCo :: CSASource -> Currency -> Fun '[String] b
sat_s2iCo
= \ (x2 :: CSASource) ->
$s$fApplicativeFun_$s$fFunctorFun2
@Currency
@a
@b
f
(((g1 `cast` <Co:55>) x2) `cast` <Co:22>) } in
sat_s2iCo
`cast` <Co:148>)
`cast` <Co:125>
$s$fFunctorFun_$sfmap
:: forall a b.
(a -> b)
-> Fun '[AnnexType, CSASource, Currency, String] a
-> Fun '[AnnexType, CSASource, Currency, String] b $s$fFunctorFun_$sfmap
= \ (@a)
(@b)
(eta_B0 :: a -> b)
(eta_B1 :: Fun '[AnnexType, CSASource, Currency, String] a) ->
sat_s2iCp @a @b eta_B0 eta_B1
```
Note that the body of `$s$fFunctorFun_$sfmap` has been lifted out to
`sat_s2iCp`, but the binding of `sat_s2iCp` precedes the binding of
`$s$fFunctorFun_$sfmap`.
Is this expected, for some reason, or is this a GHC bug? If the latter, I'm
happy to file a ticket but I can't promise an actual end-to-end compilable
reproducer...
_______________________________________________
ghc-devs mailing list
ghc-devs@haskell.org
https://clicktime.symantec.com/15tpDJfA3uiEzBJsnQUvo?h=L7HCari1kV6LycjbY5WpaWCMbvgGs4-4hXbMYMfiHcI=&u=http://mail.haskell.org/cgi-bin/mailman/listinfo/ghc-devs
This email and any attachments are confidential and may also be privileged. If
you are not the intended recipient, please delete all copies and notify the
sender immediately. You may wish to refer to the incorporation details of
Standard Chartered PLC, Standard Chartered Bank and their subsidiaries at
https: //www.sc.com/en/our-locations
Where you have a Financial Markets relationship with Standard Chartered PLC,
Standard Chartered Bank and their subsidiaries (the "Group"), information on
the regulatory standards we adhere to and how it may affect you can be found in
our Regulatory Compliance Statement at https: //www.sc.com/rcs/ and Regulatory
Compliance Disclosures at http: //www.sc.com/rcs/fm
Insofar as this communication is not sent by the Global Research team and
contains any market commentary, the market commentary has been prepared by the
sales and/or trading desk of Standard Chartered Bank or its affiliate. It is
not and does not constitute research material, independent research,
recommendation or financial advice. Any market commentary is for information
purpose only and shall not be relied on for any other purpose and is subject to
the relevant disclaimers available at https:
//www.sc.com/en/regulatory-disclosures/#market-disclaimer.
Insofar as this communication is sent by the Global Research team and contains
any research materials prepared by members of the team, the research material
is for information purpose only and shall not be relied on for any other
purpose, and is subject to the relevant disclaimers available at https:
//research.sc.com/research/api/application/static/terms-and-conditions.
Insofar as this e-mail contains the term sheet for a proposed transaction, by
responding affirmatively to this e-mail, you agree that you have understood the
terms and conditions in the attached term sheet and evaluated the merits and
risks of the transaction. We may at times also request you to sign the term
sheet to acknowledge the same.
Please visit https: //www.sc.com/en/regulatory-disclosures/dodd-frank/ for
important information with respect to derivative products.
_______________________________________________
ghc-devs mailing list
ghc-devs@haskell.org
http://mail.haskell.org/cgi-bin/mailman/listinfo/ghc-devs
