[PATCH] D137157: InstCombine] fold mul with decremented "shl -1" factor (2nd try)

[NAKAMURA Takumi via Phabricator via llvm-commits]

chapuni accepted this revision.
chapuni added a comment.
This revision is now accepted and ready to land.

I have reconfirmed this fine to build.
(who could approve this?)


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D137157/new/

https://reviews.llvm.org/D137157