[PATCH] D115176: [ARM] Peek through And 1 in IsCMPZCSINC

[Dave Green via Phabricator via llvm-commits]

dmgreen created this revision.
dmgreen added reviewers: SjoerdMeijer, samtebbs, ostannard, simon_tatham.
Herald added subscribers: hiraditya, kristof.beyls, qcolombet.
dmgreen requested review of this revision.
Herald added a project: LLVM.

We can be in situations where `And 1` zext nodes will not have been yet, preventing us from detecting removable cmpz/csinc patterns. This peeks through those nodes allowing us to simplify more code.


https://reviews.llvm.org/D115176

Files:
  llvm/lib/Target/ARM/ARMISelLowering.cpp
  llvm/test/CodeGen/Thumb2/active_lane_mask.ll
  llvm/test/CodeGen/Thumb2/mve-laneinterleaving.ll
  llvm/test/CodeGen/Thumb2/mve-pred-and.ll
  llvm/test/CodeGen/Thumb2/mve-pred-bitcast.ll
  llvm/test/CodeGen/Thumb2/mve-pred-loadstore.ll
  llvm/test/CodeGen/Thumb2/mve-pred-not.ll
  llvm/test/CodeGen/Thumb2/mve-pred-or.ll
  llvm/test/CodeGen/Thumb2/mve-pred-shuffle.ll
  llvm/test/CodeGen/Thumb2/mve-pred-spill.ll
  llvm/test/CodeGen/Thumb2/mve-pred-vselect.ll
  llvm/test/CodeGen/Thumb2/mve-pred-xor.ll
  llvm/test/CodeGen/Thumb2/mve-selectcc.ll
  llvm/test/CodeGen/Thumb2/mve-vcmp.ll
  llvm/test/CodeGen/Thumb2/mve-vcmpr.ll
  llvm/test/CodeGen/Thumb2/mve-vcmpz.ll
  llvm/test/CodeGen/Thumb2/mve-vecreduce-addpred.ll
  llvm/test/CodeGen/Thumb2/mve-vecreduce-mlapred.ll
  llvm/test/CodeGen/Thumb2/mve-vselect-constants.ll

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