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swift-mirror/stdlib/public/runtime/Private.h
Mike Ash b85c600395 [Runtime] Use a #define for the value of swift_isaMask. 
This allows _swift_getClassOfAllocated to use a constant instead of loading from a global, and allows swift_isaMask to be computed without a static initializer. Debug builds verify that the #define matches the value from libobjc.

rdar://problem/22375602 rdar://problem/46385113
2019-05-10 09:37:51 -04:00

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