However, ARM processors are also used for desktops and servers, including the world's fastest supercomputer ( Fugaku) from 2020 to 2022. It also designs and licenses cores that implement these ISAs.ĭue to their low costs, power consumption, and heat generation, ARM processors are useful for light, portable, battery-powered devices, including smartphones, laptops, and tablet computers, as well as embedded systems. develops the ISAs and licenses them to other companies, who build the physical devices that use the instruction set. Up to 32 × 64-bit registers, SIMD/floating-point (optional)ģ2-bit, except Thumb extension uses mixed 16- and 32-bit instructions.īi (little as default) in ARMv3 and aboveġ5 × 32-bit integer registers, including R14 (link register), but not R15 (PC, 26-bit addressing in older)ĪRM (stylised in lowercase as arm, formerly an acronym for Advanced RISC Machines and originally Acorn RISC Machine) is a family of RISC instruction set architectures (ISAs) for computer processors. Thumb-2, Neon, Jazelle, AES, SHA, DSP, Saturated, FPv4-SP, FPv5, Heliumġ5 × 32-bit integer registers, including R14 (link register), but not R15 (PC) SVE, SVE2, SME, AES, SHA, TME All mandatory: Thumb-2, Neon, VFPv4-D16, VFPv4 obsolete: Jazelleģ2 × 128-bit registers for scalar 32- and 64-bit FP or SIMD FP or integer or cryptographyĪRMv9-R, ARMv9-M, ARMv8-R, ARMv8-M, ARMv7-A, ARMv7-R, ARMv7E-M, ARMv7-M, ARMv6-Mģ2-bit, except Thumb-2 extensions use mixed 16- and 32-bit instructions.
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