xtheadmatrix: Add new extension - Githubissues

XUANTIE-RV / thead-extension-spec

XuanTie vendor extension Instruction Set spec

Apache License 2.0

30 stars 20 forks source link

xtheadmatrix: Add new extension #44

Open cmuellner opened 6 months ago

cmuellner commented 6 months ago

This change integrates T-Head's attached matrix extension as XTheadMatrix. All details incl. ABI-related material is integrated.

The spec was developed here (most of the changes in this patch are copied from there): https://github.com/T-head-Semi/riscv-matrix-extension-spec

Changes to the v0.4:

Bump version to v0.4.1
Dropping all 'RVI'/'RISC-V' from titles/names
Adding 'th.' prefix to instructions/CSRs
Adding '__riscvth' prefix to intrinsics
Dropping CSR access intrinsics
Small changes to intrinsics structure to avoid too deep nesting

TODOs:

Finalize CSR encodings
Add discovery mechanism