[all-commits] [llvm/llvm-project] cb7dff: [RISCV] Zvk (vector crypto) specification update t...

[Eric Gouriou via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: cb7dffdc9a83f400410657431bda14e79f6e0176
      https://github.com/llvm/llvm-project/commit/cb7dffdc9a83f400410657431bda14e79f6e0176
  Author: Eric Gouriou <ego at rivosinc.com>
  Date:   2023-04-20 (Thu, 20 Apr 2023)

  Changed paths:
    M clang/test/Preprocessor/riscv-target-features.c
    M llvm/docs/RISCVUsage.rst
    M llvm/lib/Support/RISCVISAInfo.cpp
    M llvm/lib/Target/RISCV/RISCVFeatures.td
    M llvm/lib/Target/RISCV/RISCVInstrInfoZvk.td
    M llvm/test/CodeGen/RISCV/attributes.ll
    M llvm/test/MC/RISCV/attribute-arch.s
    A llvm/test/MC/RISCV/rvv/zvbb.s
    A llvm/test/MC/RISCV/rvv/zvbc.s
    R llvm/test/MC/RISCV/rvv/zvkb.s
    M llvm/test/MC/RISCV/rvv/zvkg.s

  Log Message:
  -----------
  [RISCV] Zvk (vector crypto) specification update to 0.5.1 (Zvbb/Zvbc/Zvkt/Zvkng/Zvksg)

Update the Zvk support from 0.3.x to 0.5.1, tracking the extension as
documented in
<https://github.com/riscv/riscv-crypto/releases/download/v20230407/riscv-crypto-spec-vector.pdf>.

- Zvkb is split into Zvbb and Zvbc
- Zvbc (vector carryless multiply) requires 64 bit elements (Zve64x)
- Use the extension descriptions from the specification for Zvbb/Zvbc
- Zvkt is introduced (no instructions, but adds an attribute and macro)
- Zvkn and Zvks both imply Zvkt
- Zvkng and Zvksg are introduced, adding Zvkg (GMAC) to Zvkn and Zvks
- In Zvbb, add vrev.v, vclz.v, vctz.v, vcpop.v, vwsll.{vv,vx,vi}

Differential Revision: https://reviews.llvm.org/D148483