[PATCH] D41361: [SimplifyCFG] Avoid quadratic on a predecessors number behavior in instruction sinking.

Michael Zolotukhin via Phabricator via llvm-commits llvm-commits at lists.llvm.org
Mon Dec 18 10:54:43 PST 2017

mzolotukhin added a comment.

This also fixes a big compile time regression we found that was caused by https://reviews.llvm.org/rL279460 (and consequent follow-ups). In the problematic test-case we have a huge function, where one of the blocks have more than 1000 predecessors.


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