[PATCH] D87326: [ADT] Fix reference invalidation when self referencing a SmallVector

[Duncan P. N. Exon Smith via Phabricator via llvm-commits]

dexonsmith added a comment.

In D87326#2395162 <https://reviews.llvm.org/D87326#2395162>, @dexonsmith wrote:

>> Downside is it would require copying most of the small vector implementation code for this special case, kind of like what currently happens for `SmallVectorTemplateBase` with trivially copyable types.
>>
>> Given that a lot of use cases of SmallVector seem to be for storing pointers or as the base class for SmallString, this would remove this specific overhead in these cases.
>
> That seems really valuable, and could be committed separately/ahead of the rest of this patch.

Here's a quick attempt at it: https://reviews.llvm.org/D91467


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https://reviews.llvm.org/D87326