[PATCH] D116801: [PowerPC] Avoid perfect shuffle when mask has multiple uses

[Nemanja Ivanovic via Phabricator via llvm-commits]

nemanjai added a comment.

This adds a whole lot of computation on the DAG in addition to having thread safety issues and the gain is very small. I am not in favour of something similar to this.


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  https://reviews.llvm.org/D116801/new/

https://reviews.llvm.org/D116801