| A | B |
|---|---|
| Introduced | 2011 |
| Version | ARMv8-R, ARMv8-A, ARMv8.1-A, ARMv8.2-A, ARMv8.3-A, ARMv8.4-A, ARMv8.5-A, ARMv8.6-A, ARMv8.7-A, ARMv8.8-A, ARMv8.9-A, ARMv9.0-A, ARMv9.1-A, ARMv9.2-A, ARMv9.3-A, ARMv9.4-A, ARMv9.5-A, ARMv9.6-A, ARMv9.7-A |
| Encoding | AArch64/A64 and AArch32/A32 use 32-bit instructions, AArch32/T32 (Thumb-2) uses mixed 16- and 32-bit instructions1 |
| Endianness | Bi (little as default) |
| Extensions | SVE, SVE2, SME, SME2, AES, SM3, SM4, SHA, CRC32, RNDR, TME; All mandatory: Thumb-2, Neon, VFPv4-D16, VFPv4; obsolete: Thumb and Jazelle |
| Registers | … |
| General-purpose | 31 × 64-bit integer registers1 |
| Floating-point | 32 × 128-bit registers1 for scalar 32- and 64-bit FP or SIMD FP or integer; or cryptography |
ARM AArch64 (64/32-bit)
(echo:: @ ᯤ)