riscv_ext_xventanacondops_xlen

Extension: Make XVentanaCondOps instructions RV64-only

• Status: Merged for Binutils 2.42
• Branch: riscv-ext-xventanacondops-xlen
• Tracking PR: #132 (view Pull Request and Diff)
• Mailing List:
  • PATCH v1 (2023-08-30)

Issue Solved

Two instructions in the XVentanaCondOps vendor extension ― "vt.maskc" and "vt.maskcn" ― are defined for all XLEN values. This is against the manual and LLVM.

Although those instructions are (in theory) XLEN-agonistic, it would be safer to disable those instructions on RV32 to prevent misuses.