riscv_opcode_fix_vmsge_vx

Fix: Opcode entries of vmsge{,u}.vx

• Status: Merged for Binutils 2.42
• Branch: riscv-opcode-fix-vmsge-vx
• Tracking PR: #119 (view Pull Request and Diff)
• Mailing List:
  • PATCH v1 (2023-08-06)

Issue Solved

Their check_func should be match_never, not match_opcode.

The reasons this error did not cause any disassembler errors are:

1. The problem will not reproduce if no-aliases is specified (because macro instructions are handled as aliases).
2. If not, all affected compressed instructions or their aliases precede before vmsge{,u}.vx macro instructions.

However, it'll easily break if we reorder opcode entries.

This commit fixes this issue before the accident occurs.