Rashmi Mudduluru 5e2f20b2d8 [SUA][IRGen] Add stub for swift_coroFrameAlloc that weakly links against the runtime function (#79889) ...

* [SUA][IRGen] Add stub for swift_coroFrameAlloc that weakly links against the runtime function

This commit modifies IRGen to emit a stub function `__swift_coroFrameAllocStub` instead of the
newly introduced swift-rt function `swift_coroFrameAlloc`. The stub checks whether the runtime has the symbol
`swift_coroFrameAlloc` and dispatches to it if it exists, uses `malloc` otherwise. This ensures the
ability to back deploy the feature to older OS targets.

rdar://145239850

2025-04-08 09:58:24 -07:00

125 KiB

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