> The M series processors were explicitly designed with extra instructions for commonly used JS functionality. I think I know what you're thinking of and it's

> The M series processors were explicitly designed with extra instructions for commonly used JS functionality. I think I know what you're thinking of and it's a little overblown. It's a single instruction - FJCVTZS - which performs a specific type of floating-point to integer conversion. It's a standard ARMv8.3 instruction, not an Apple extension. https://developer.arm.com/documentation/dui0801/l/A64-Floating-point-Instructions/FJCVTZS--A64- https://developer.arm.com/documentation/dui0801/l/A64-Floati...