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Yeah because ARM sells the complete implementation for the ARM core. But with Risc-V there may be hundreds of different implementations, you can‘t really add op
by tpetry 7y ago
Yeah because ARM sells the complete implementation for the ARM core. But with Risc-V there may be hundreds of different implementations, you can‘t really add optimizations for everyone.
- floatboth 7y agoNot everyone buys the implementations, I specifically listed multiple non-Cortex ones. Cavium/Marvell ThunderX, ThunderX2 (Broadcom Vulcan), Qualcomm Centriq (press F for Falkor), Ampere eMAG (Skylark), all current Apple stuff, are all very different custom implementations. TX2 in particular has a fascinating history: https://en.wikichip.org/wiki/cavium/microarchitectures/vulcan https://en.wikichip.org/wiki/cavium/microarchitectures/vulca...