================
@@ -975,8 +975,16 @@ void BasicBlock::spliceDebugInfoImpl(BasicBlock::iterator
Dest, BasicBlock *Src,
if (ReadFromTail && Src->getMarker(Last)) {
DbgMarker *FromLast = Src->getMarker(Last);
if (LastIsEnd) {
- Dest->adoptDbgRecords(Src, Last, true);
- // adoptDbgRecords will release any trailers.
+ if (Dest == end()) {
+ // Abosrb the trailing markers from Src.
+ assert(FromLast == Src->getTrailingDbgRecords());
+ createMarker(Dest)->absorbDebugValues(*FromLast, true);
+ FromLast->eraseFromParent();
+ Src->deleteTrailingDbgRecords();
----------------
OCHyams wrote:
`Src` is not null (it is dereferenced throughout function without null checks).
Here the trailing marker is deleted (eraseFromParent) and unlinked from its
parent (deleteTrailingDbgRecords) - the order doesn't matter because
`deleteTrailingDbgRecords` just removes the ptr from a map.
https://github.com/llvm/llvm-project/pull/106952
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