Erik Eckstein 87e7250750 Optimizer: fix an ownership violation when duplicating loops ...

If a guaranteed value is used in a dead-end exit block and the enclosing value is _not_ destroyed in this block, we end up missing the enclosing value as phi-argument after duplicating the loop.
TODO: once we have complete lifetimes we can remove this check again.

rdar://159125605

2025-08-28 18:40:54 +02:00

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