[all-commits] [llvm/llvm-project] 19fb4b: [RISCV] Validate the end of register ranges in Zcm...

[Craig Topper via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 19fb4b04a605c4a5759c72f61e8e5f5cac406a0b
      https://github.com/llvm/llvm-project/commit/19fb4b04a605c4a5759c72f61e8e5f5cac406a0b
  Author: Craig Topper <craig.topper at sifive.com>
  Date:   2025-04-01 (Tue, 01 Apr 2025)

  Changed paths:
    M llvm/lib/Target/RISCV/AsmParser/RISCVAsmParser.cpp
    M llvm/test/MC/RISCV/rv32zcmp-invalid.s
    M llvm/test/MC/RISCV/rv64zcmp-invalid.s

  Log Message:
  -----------
  [RISCV] Validate the end of register ranges in Zcmp register lists. (#133866)

We were only checking that the last register was a register, not that it
was a legal register for a register list. This caused the encoder
function to hit an llvm_unreachable.

The error messages are not good, but this only one of multiple things
that need to be fixed in this function. I'll focus on error messages
later once I have the other issues fixed.



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