Adding Kavon.
It would be good to record the outcome of this discussion in a 'Note' with the cml_cont declaration, explaining what it is for.
Simon
| -----Original Message-----
| From: ghc-devs On Behalf Of Ömer Sinan
| Agacan
| Sent: 18 March 2018 07:32
| To: Shao, Cheng
| Cc: ghc-devs
| Subject: Re: Is "cml_cont" of CmmCall used in practice?
|
| Hi Shao,
|
| Perhaps not in the Cmm output generated for your programs, but it's
| definitely used in the code generator. See e.g. `lowerSafeForeignCall`
| and `blockCode` which set the field with `Just`. The former seems to
| be related with foreign calls so perhaps try compiling a FFI package.
| `CmmLayoutStack` uses that field for code generation (I don't
| understand the details yet).
|
| Ömer
|
| 2018-03-18 8:38 GMT+03:00 Shao, Cheng :
| > Hi all,
| >
| > Is the "cml_cont" field of the CmmCall variant is really used in
| > practice? I traversed the output of raw Cmm produced by ghc
| compiling
| > the whole base package, but the value of cml_cont is always Nothing.
| >
| > Regards,
| > Shao Cheng
| >
| > _______________________________________________
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