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The JS rounding mode instruction wasn't even Apple's invention, it's standard ARMv8. But yes, Apple spends a lot on CPU design and it shows; ARM's Cortex perfo
by Jasper_ 6y ago
The JS rounding mode instruction wasn't even Apple's invention, it's standard ARMv8.
But yes, Apple spends a lot on CPU design and it shows; ARM's Cortex performance for things like NEON is way, way worse.
- saagarjha 6y agoYes, that’s true. But Apple heavily influences the standard, and they’re usually the first to actually implement new revisions; plus they pick and choose which extensions they want too. That being said, the “Apple added JavaScript instructions and that’s why their processors are fast at web browser benchmarks” meme needs to die. From my impressions of seeing how these get implemented, it seems like some hardware features end getting added to the chip by the hardware team and then the software engineers get told that it now exists. So that’s another reason why I doubt that they are “cheating” on benchmarks.