[PATCH] D47681: [DAGCombiner] Bug 31275- Extract a shift from a constant mul or udiv if a rotate can be formed

[Sam Conrad via Phabricator via llvm-commits]

sameconrad updated this revision to Diff 151651.
sameconrad added a comment.

Update to also handle cases where we need to extract a smaller shift from a shl/srl.


https://reviews.llvm.org/D47681

Files:
  lib/CodeGen/SelectionDAG/DAGCombiner.cpp
  test/CodeGen/AArch64/rotate-extract.ll
  test/CodeGen/X86/rotate-extract.ll

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