Neoverse N2 - AshokBhat/notes GitHub Wiki

• Arm core aimed at servers and networking market
• Announced in 2020, likely production in 2022+

Feature	Feature tag	GCC flag	LLVM flag
Armv9.0-A
Armv8.5-A		AARCH64_FL_FOR_ARCH8_5	ARMV8_5A
SVE	FEAT_SVE	AARCH64_FL_SVE	AArch64::AEK_SVE
Random number generator	FEAT_RNG	AARCH64_FL_RNG
Memory tagging extension	FEAT_MTE	AARCH64_FL_MEMTAG	AArch64::AEK_MTE
FP16	FEAT_FP16	AARCH64_FL_F16	AArch64::AEK_FP16
BF16	FEAT_BF16	AARCH64_FL_BF16	AArch64::AEK_BF16
Int8 Matrix Multiplication	FEAT_I8MM	AARCH64_FL_I8MM	AArch64::AEK_I8MM
SVE2	FEAT_SVE2	AARCH64_FL_SVE2	AArch64::AEK_SVE2
SVE2 Bit Permute	FEAT_SVE_BitPerm	AARCH64_FL_SVE2_BITPERM	AArch64::AEK_SVE2BITPERM

Sources:

1. GCC N2 patch - https://gcc.gnu.org/pipermail/gcc-patches/2020-September/554738.html
2. LLVM N2 patch - https://github.com/llvm/llvm-project/commit/2b6691894ab671706051a6d7ef54571546c20d3b
3. https://developer.arm.com/architectures/cpu-architecture/a-profile/exploration-tools/feature-names-for-a-profile

• Marvell Octeon
• Alibaba Yitian 710

Sources:

1. https://www.arm.com/company/news/2021/04/transforming-compute-for-next-generation-infrastructure
2. https://developer.aliyun.com/article/1082384

• List of Arm Cores

• https://www.anandtech.com/show/16073/arm-announces-neoverse-v1-n2
• https://developer.arm.com/ip-products/processors/neoverse/neoverse-n2