[PATCH] D124168: DeadMachineInstructionElim: Switch to using LiveRegUnits

[Nikita Popov via Phabricator via llvm-commits]

nikic added a comment.

> Theoretically improves compile time for targets with many overlapping registers

In practice, this is a major compile time regression instead: http://llvm-compile-time-tracker.com/compare.php?from=6c44a7179f1747ec38d580e6b50bde98555ad811&to=b5041527c75de2f409aa9e2e6deba12b17834c59&stat=instructions


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https://reviews.llvm.org/D124168