[all-commits] [llvm/llvm-project] d43c80: [ARM] Peek through And 1 in IsCMPZCSINC

[David Green via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: d43c801d136e2a0bf8002b82ab08c2bec08b3d74
      https://github.com/llvm/llvm-project/commit/d43c801d136e2a0bf8002b82ab08c2bec08b3d74
  Author: David Green <david.green at arm.com>
  Date:   2021-12-08 (Wed, 08 Dec 2021)

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

  Log Message:
  -----------
  [ARM] Peek through And 1 in IsCMPZCSINC

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.

Differential Revision: https://reviews.llvm.org/D115176