[PATCH v6 2/2] RISC-V: Add SpacemiT vendor extension xsmtvdotii

[Jeffrey Law]

On 5/25/2026 2:20 AM, Mark Zhuang wrote:
> From: Mark Zhuang <mark.zhuang@spacemit.com>
>
> SpacemiT defines Intrinsic Matrix Extension (IME) specification [1].
> SpacemiT A100 implements version 1.0 of the SpacemiT Vector Dot Product
> II Extension (XsmtVdotII v1.0) [2], a subset of the full IME specification.
>
> [1] https://github.com/spacemit-com/riscv-ime-extension-spec/releases/download/v1.0/spacemit-ime-asciidoc.pdf
> [2] https://github.com/spacemit-com/docs-ai/blob/main/en/architecture/ime_extension.md
> ---
>   bfd/elfxx-riscv.c                            |  11 ++
>   gas/NEWS                                     |   2 +-
>   gas/config/tc-riscv.c                        | 102 ++++++++++++++++
>   gas/doc/c-riscv.texi                         |   8 ++
>   gas/testsuite/gas/riscv/march-help.l         |   1 +
>   gas/testsuite/gas/riscv/x-smt-vdot-fail.l    |  64 +++++-----
>   gas/testsuite/gas/riscv/x-smt-vdot-ii-fail.d |   3 +
>   gas/testsuite/gas/riscv/x-smt-vdot-ii-fail.l |  99 ++++++++++++++++
>   gas/testsuite/gas/riscv/x-smt-vdot-ii-fail.s | 118 +++++++++++++++++++
>   gas/testsuite/gas/riscv/x-smt-vdot-ii.d      |  69 +++++++++++
>   gas/testsuite/gas/riscv/x-smt-vdot-ii.s      |  73 ++++++++++++
>   include/opcode/riscv-opc.h                   |  41 +++++++
>   include/opcode/riscv.h                       |   7 ++
>   opcodes/riscv-dis.c                          |  36 ++++++
>   opcodes/riscv-opc.c                          |  63 +++++++---
I've pushed this to the trunk as well.  Thanks!

jeff