Arnold Schwaighofer 9263f61062 Runtime: Workaround armv7k code lowering bug ...

This is to workaround a bug in llvm's codegen when emitting the
callee-pop stack adjustment on a regular return from a swiftasync
function (vs. a tail call).

Without the workaround we fail to emit the callee-pop stack adjustment
leading to a mis-aligned stack on return.

```
  pop     {r7, pc}
  add     sp, #16
```

Workaround for rdar://79726989

2021-06-24 13:45:58 -07:00

38 KiB

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