[PATCH] D151449: [RISCV] Add DAG combine for CTTZ in the case of input 0

[Philip Reames via Phabricator via llvm-commits]

reames requested changes to this revision.
reames added a comment.
This revision now requires changes to proceed.

Please provide a meaningful change description.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D151449/new/

https://reviews.llvm.org/D151449