[PATCH] D28329: [PowerPC, DAGCombiner] Fold a << (b % (sizeof(a) * 8)) back to a single instruction

[Tim Shen via Phabricator via llvm-commits]

timshen created this revision.
timshen added reviewers: bogner, kbarton, hfinkel, iteratee.
timshen added a subscriber: llvm-commits.
Herald added a subscriber: nemanjai.

This is the corresponding llvm change to https://reviews.llvm.org/D28037 to ensure no performance
regression.


https://reviews.llvm.org/D28329

Files:
  llvm/include/llvm/Target/TargetLowering.h
  llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
  llvm/lib/Target/PowerPC/PPCISelLowering.h
  llvm/test/CodeGen/PowerPC/shift_mask.ll

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