Is "cml_cont" of CmmCall used in practice?

[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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