[PATCH] D101468: [Passes] Run sinking/hoisting in SimplifyCFG earlier.

[Nikita Popov via Phabricator via llvm-commits]

nikic added a comment.

Thanks! I like this a lot more than the LoopVectorize variant. I also think it makes sense that this happens at the end of the "function simplification" pipeline, which means that the inliner will see the hoisted/sunk IR, which should result in a more accurate cost (as sinkable/hoistable instructions will not be counted multiple times).

It might make sense to do this even earlier, as I suspect that passes like GVN would also benefit from hoisted/sunk IR. But this looks like a reasonable starting point, at least to me.


Repository:
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https://reviews.llvm.org/D101468