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Commit 03564835 authored by Daniel Dunbar's avatar Daniel Dunbar
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Switch DIDescriptor to use a TrackingVH. - This makes it much safer to work... 

Switch DIDescriptor to use a TrackingVH. - This makes it much safer to work with debug info, since it was extraordinarily easy to have dangling pointers thanks to MDNode uniquing.

llvm-svn: 82507
parent 70d4fb0d
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