[PATCH] D66004: [X86][SSE] SimplifyDemandedVectorEltsForTargetNode - add general shuffle combining support

[Simon Pilgrim via Phabricator via llvm-commits]

RKSimon added a comment.

ping - I think this is ready for commital now, I delayed pinging as I knew I'd be away on holiday this week and a patch like this is likely to cause a few unexpected regressions that will need addressing.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D66004/new/

https://reviews.llvm.org/D66004