https://github.com/arsenm requested changes to this pull request.
This should not introduce a new intrinsic and only needs a tablegen pattern. The one benefit you get out doing this fold in the IR would be sinking a popcnt out of block, but you can do that just by handling this case in isProfitableToSinkOperands, and that avoids teaching all of the known bits / sign bits / simplify demanded bits about this https://github.com/llvm/llvm-project/pull/164847 _______________________________________________ cfe-commits mailing list [email protected] https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
