[PATCH] D146121: [DAG] Move lshr narrowing from visitANDLike to SimplifyDemandedBits

[Phoebe Wang via Phabricator via llvm-commits]

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

X86 changes look good to me expect one nit.



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Comment at: llvm/test/CodeGen/X86/2009-05-30-ISelBug.ll:12
+; CHECK-NEXT:    # kill: def $edx killed $edx def $rdx
+; CHECK-NEXT:    shrl $8, %edx
 ; CHECK-NEXT:    addl $4, %r10d
----------------
This results in scale to be 4, which may do bad for performance?


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D146121/new/

https://reviews.llvm.org/D146121