[PATCH] D89479: [SimplifyCFG] Be more conservative when speculating in loops. (WIP)

[Sanjay Patel via Phabricator via llvm-commits]

spatel added a comment.

Another reason that we would likely want a finer-grain solution: recent AMD implementations appear to have full-speed lzcnt (1 cycle and full throughput according to Agner's tables for Jaguar and Ryzen).


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https://reviews.llvm.org/D89479