Meghana Gupta 8438e165fa Fix TempLValueOpt for init_enum_data_addr ...

TempLValueOpt eliminates copies from a temporary to destination and
supports hoisting projections of the destination.

An enum is fully initialized with the pair init_enum_data_addr and
inject_enum_addr. Calling destroy_addr only before inject_enum_addr
can cause a runtime crash.

This optimization can eliminate copy_addr and hoist init_enum_data_addr
such that enum is not fully initialized before it's use.

Disable this case for now.
Fixes rdar://145941433

To correctly do this optimization we have to find the corresponding inject_enum_addr
and hoist it as well or ensure the source is not used until fully initialized by inject_enum_addr.

2025-03-04 16:23:09 -08:00

12 KiB

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