Joe Groff d9d451cea5 SIL: Add unchecked_{trivial,ref}_bit_cast instructions. ...

These instructions do a bitcast operation without stack traffic (at the SIL level). unchecked_trivial_bit_cast represents a conversion from a potentially nontrivial type to a trivial type, such as from a class reference to Int. unchecked_ref_bit_cast represents a conversion between types for which retain_value and release_value has equivalent effects when applied on the input or output values.

Swift SVN r19053

2014-06-20 22:02:38 +00:00

33 KiB

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