Teach the backend to make references to swift_async_extendedFramePointerFlags weak if it emits it #3695
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…terFlags weak if it emits it When references to the symbol `swift_async_extendedFramePointerFlags` are emitted they have to be weak. References to the symbol `swift_async_extendedFramePointerFlags` get emitted only by frame lowering code. Therefore, the backend needs to track references to the symbol and mark them weak. Differential Revision: https://reviews.llvm.org/D115672 rdar://86432570
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When references to the symbol
swift_async_extendedFramePointerFlagsare emitted they have to be weak.
References to the symbol
swift_async_extendedFramePointerFlagsgetemitted only by frame lowering code. Therefore, the backend needs to track
references to the symbol and mark them weak.
Differential Revision: https://reviews.llvm.org/D115672
rdar://86432570