cmd/internal/obj/riscv: add support for vector reduction instructions
Add support for vector reduction instructions to the RISC-V assembler,
including single-width integer reduction, widening integer reduction,
single-width floating-point reduction and widening floating-point
reduction.
Change-Id: I8f17bef11389f3a017e0430275023fc5d75936e3
Reviewed-on: https://go-review.googlesource.com/c/go/+/646778 Reviewed-by: Meng Zhuo <mengzhuo1203@gmail.com> Reviewed-by: Mark Ryan <markdryan@rivosinc.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Carlos Amedee <carlos@golang.org> Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>