Working draft for the RISC-V vector specification are under doc/, intrinsic prototypes under auto-generated/ are generated by scripts under rvv-intrinsic-generator/.
Please check out the latest intrinsics specification under Releases.
Upcoming LLVM 17 and GCC trunk supports v0.12, which is expected to be identical to the to-be-frozen intrinsic specification.
Clang 16 and GCC 13 supports the v0.11 version, which does not have tuple type segment load/store intrinsics, fixed-point intrinsics with rounding mode parameter, and floating-point intrinsics with rounding mdoe parameter.