[PATCH] D118017: [RISCV] Add "zbkb" predicates and add tests for some instruction pattern in Zbkb extension

[WangLian via Phabricator via llvm-commits]

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1. andn, orn, xnor and all rotate instruction in this patch.
2. move some tests from rv32zbb-zbp.ll  to rv32zbb-zbp-zbkb.ll.
3. move some tests from rv64zbb-zbp.ll to rv64zbb-zbp-zbkb.ll


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D118017

Files:
  llvm/lib/Target/RISCV/RISCVISelLowering.cpp
  llvm/lib/Target/RISCV/RISCVInstrInfoZb.td
  llvm/test/CodeGen/RISCV/rv32zbb-zbp-zbkb.ll
  llvm/test/CodeGen/RISCV/rv32zbb-zbp.ll
  llvm/test/CodeGen/RISCV/rv64zbb-zbp-zbkb.ll
  llvm/test/CodeGen/RISCV/rv64zbb-zbp.ll

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