[PATCH] D102634: Calculate indexes of last child of each DWARF entry once during tryExtractDIEsIfNeeded.

[David Blaikie via Phabricator via llvm-commits]

dblaikie added a comment.

In D102634#2767781 <https://reviews.llvm.org/D102634#2767781>, @simon.giesecke wrote:

> In D102634#2766582 <https://reviews.llvm.org/D102634#2766582>, @dblaikie wrote:
>
>> What's your use case such that this performance concern has come up for you?
>
> It's a hotspot when running `llvm-gsymutil --convert`. I can provide some numbers if you want.

If you happen to have them, might be nice to have in the patch description/commit message.

(@clayborg's suggestion of replacing "Depth" with two smaller fields seems roughly plausible to me/reasonable thing to try, for what it's worth)


Repository:
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  https://reviews.llvm.org/D102634/new/

https://reviews.llvm.org/D102634