[PATCH] D103925: [X86][SSE] Support 64-bit vectorization (WIP)

[Alexey Bataev via Phabricator via llvm-commits]

ABataev added a comment.

I foresee some problems with it in LTO mode. Small vectors are really a pain in SLP + LTO. Because of too early optimization, we may miss some better opportunities in later passes. We need to add some kind of a check that SLP runs at link time with LTO or it runs without LTO and enable small vectors only in these modes. If SLP runs at compile time with LTO, better to limit it to be used only with large vectors.


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  https://reviews.llvm.org/D103925/new/

https://reviews.llvm.org/D103925