[PATCH] D117640: [RISCV][RFC] add inst support of zbkb

[Xinlong Wu via Phabricator via llvm-commits]

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This commit add instructions supports of `zbkb` which defined in scalar cryptography extension version v1.0.0 (has been ratified already).


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D117640

Files:
  llvm/lib/Support/RISCVISAInfo.cpp
  llvm/lib/Target/RISCV/RISCV.td
  llvm/lib/Target/RISCV/RISCVInstrInfoZb.td
  llvm/lib/Target/RISCV/RISCVSchedRocket.td
  llvm/lib/Target/RISCV/RISCVSchedSiFive7.td
  llvm/lib/Target/RISCV/RISCVSubtarget.h
  llvm/test/CodeGen/RISCV/attributes.ll
  llvm/test/MC/RISCV/attribute-arch.s
  llvm/test/MC/RISCV/zbkb/rv32zbkb-only-valid.s
  llvm/test/MC/RISCV/zbkb/rv32zbkb-valid.s
  llvm/test/MC/RISCV/zbkb/rv64-zbkb-valid.s
  llvm/test/MC/RISCV/zbkb/rv64zbkb-only-valid.s

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