[PATCH] D32827: [AArch64] Correct lane zero optimization in insert/extract costs

[Matthew Simpson via Phabricator via llvm-commits]

mssimpso added a comment.

Hey Adam,

Thanks for the feedback. It sounds like we can start the with the "extracting from lane zero" piece and then follow up with patches for inserts fed by loads and then within-domain moves. Hopefully this sequence will minimize the affects of any temporary imprecision. And I will benchmark the changes with some of the hardware I have access to (Kryo, Falkor, Cortex-A57), and provide some analysis.


https://reviews.llvm.org/D32827