New Objective-C runtime features #462
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Last year, Apple improved a few things in the Objective-C runtime and
clang, see this video from WWDC22. Last time I checked, these were not yet available in the open-source version ofclang, though they might be by now.We don't really have a good way to enable these automatically yet, see #266, but for now, we can implement these features behind a feature flag
unstable-apple-new, for people to try them out!TODO: Implement the optimized versions of:
Protocol checks