Nate Chandler 9ad44a5056 [ClosureLifetimeFixup] Dealloc args on frontier. ...

Previously, the dealloc_stacks created for the alloc_stacks used to pass
@in_guaranteed arguments to on_stack closures were created after the
users of the closure.  When SILGen created these alloc_stacks in the
same block as the users, this happened to work.  Now that
AddressLowering creates such alloc_stacks elsewhere, this approach
results in invalid SIL.

Here, the dealloc_stacks are instead at the end of each block in the
dominance frontier of the alloc_stack.

2022-12-13 11:46:47 -08:00

25 KiB

Raw Blame History

View Raw