664aebab7d
The RVA23 profile was ratified on the 21st of October 2024. https://riscv.org/announcements/2024/10/risc-v-announces-ratification-of-the-rva23-profile-standard/ Now that it's ratified we can add rva23u64 as a valid value for the GORISCV64 environment variable. This will allow the compiler and assembler to generate instructions made mandatory by the new profile without a runtime check. Examples of such instructions include those introduced by the Vector and Zicond extensions. Setting GORISCV64=rva23u64 defines the riscv64.rva20u64, riscv64.rva22u64 and riscv64.rva23u64 build tags, sets the internal variable buildcfg.GORISCV64 to 23 and defines the macros GORISCV64_rva23u64, hasV, hasZba, hasZbb, hasZbs, hasZfa, and hasZicond for use in assembly language code. Updates #61476 Change-Id: I7641c23084fa52891c9a18df58f4013cb6597d88 Reviewed-on: https://go-review.googlesource.com/c/go/+/633417 Reviewed-by: Carlos Amedee <carlos@golang.org> Reviewed-by: Jorropo <jorropo.pgm@gmail.com> Reviewed-by: Joel Sing <joel@sing.id.au> Reviewed-by: Dmitri Shuralyov <dmitshur@google.com> LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Meng Zhuo <mengzhuo1203@gmail.com>
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