Meghana Gupta fd6d29d10b Insert end_borrow for dead phi operands only when required ...

DCE inserts end_borrow at phi operands when a guaranteed phi becomes dead.
This should be done for reborrows which end the lifetime of the incoming value.
The existing check was not accurate and ended up inserting end_borrow for forwarded values as well.

Fixes rdar://139283745

2024-11-12 14:05:23 -08:00

34 KiB

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