Andrew Trick 4db2a46cff Add SIL instruction: open_existential_box_value. ...

This has the same semantics as open_existential_box, but returns an object value
instead of an address.

This is used in SIL opaque values mode. Attempting to reuse open_existential_box
in this mode causes SIL type inconsistencies that are too difficult to work
around. Adding this instruction allows for consistent handling of opaque values.

The original versions of several of these currently redundant instructions will
be removed once the SIL representation stabilizes.

2017-07-17 23:46:41 -07:00

6.3 KiB

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