Orlando Cazalet-Hyams 43661a1214 [RemoveDIs] Fix spliceDebugInfo splice-to-end edge case (#105671) ...

Fix #105571 which demonstrates an end() iterator dereference when
performing a non-empty splice to end() from a region that ends at
Src::end().

Rather than calling Instruction::adoptDbgRecords from Dest, create a marker
(which takes an iterator) and absorbDebugValues onto that. The "absorb" variant
doesn't clean up the source marker, which in this case we know is a trailing
marker, so we have to do that manually.

2024-08-29 14:12:02 +01:00

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