[PATCH] D59535: [SelectionDAG] Compute known bits of CopyFromReg

[Craig Topper via Phabricator via llvm-commits]

craig.topper added a comment.

In D59535#1454693 <https://reviews.llvm.org/D59535#1454693>, @RKSimon wrote:

> LGTM - are you intending to do the same for ComputeNumSignBits ?


Don't sign bits for live ins usually become an AssertSExt?


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