XCode 6 Beta 4 unimplemented IR generation feature bitcast between types of different size when archiving.

To temporarily resolve this until the next beta, change the compiler optimization level to None in the target’s release configuration. These settings can be found in Build Settings -> Swift Compiler-Code Generation

Screen Shot 2014-07-26 at 5.05.20 PM

2 thoughts on “XCode 6 Beta 4 unimplemented IR generation feature bitcast between types of different size when archiving.”

  1. Thanks for this! You saved me hours of head scratching and potentially having to regenerate my project.

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