I have “GNU assembler (GNU Binutils for Ubuntu) 2.42” for riscv64 but it does not know the IME instructions such as vmadot. I think this is the xsmtvdot extension. I do not use cross-compiling, just native development on ubuntu. Will a native binutils be available, or source code so I can build it myself? Or maybe I need a different -march option to enable the AI opcodes.
Yes, it’s the xsmtvdot extension. GCC has merged support for it, but Binutils hasn’t yet. Here is the latest patch for v5 Re: [PING^3][v2] RISC-V: Add SpacemiT vendor extensions xsmtvdot