[PATCH] D128769: [DAGCombiner][X86] Fold sra (sub AddC, (shl X, N1C)), N1C --> sext (sub AddC1',(trunc X to (width - N1C)))

[Craig Topper via Phabricator via llvm-commits]

craig.topper updated this revision to Diff 441559.
craig.topper added a comment.

Move N1C check.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D128769/new/

https://reviews.llvm.org/D128769

Files:
  llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
  llvm/test/CodeGen/X86/shift-combine.ll

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