[PATCH] D43293: [SimplifyCFG] Don't remove preheaders when we need canonical loops.

Eli Friedman via Phabricator via llvm-commits llvm-commits at lists.llvm.org
Wed Feb 14 11:55:03 PST 2018

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efriedma added a comment.

You might need to update the BackEdges set in more places, if we can introduce backedges in certain cases.

What passes benefit from having SimplifyCFG keep around empty preheaders?


https://reviews.llvm.org/D43293

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