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

[Simon Pilgrim via Phabricator via llvm-commits]

RKSimon marked 3 inline comments as not done.
RKSimon added inline comments.


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Comment at: llvm/test/CodeGen/X86/h-register-addressing-64.ll:67
+; CHECK-NEXT:    andl $2040, %esi # imm = 0x7F8
+; CHECK-NEXT:    movzbl (%rdi,%rsi), %eax
 ; CHECK-NEXT:    retq
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pengfei wrote:
> RKSimon wrote:
> > Regression (WIP)
> I saw you removed WIP in the title. Are you not considering this as regression or you will do it as a follow up?
Let me take another look - it seems to be due to matchAddressRecursively not being very good at peeking through ZERO_EXTEND nodes.


Repository:
  rG LLVM Github Monorepo

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

https://reviews.llvm.org/D146121