Comment Comment by uyt > Kernel developers obsess about speed and performance. The Linux kernel is built using -mregparm=3, which is sometimes called fastcall.I've never messed with calling convention for the sake of performance before so I found this bit interesting. I found more info about it at: https://en.wikipedia.org/wiki/X86_calling_conventions#Borlan...Does anyone have benchmarks? Assuming I don't care about ABI stability, what's the fastest calling convention? parent uyt 4 years ago
I've never messed with calling convention for the sake of performance before so I found this bit interesting. I found more info about it at: https://en.wikipedia.org/wiki/X86_calling_conventions#Borlan...
Does anyone have benchmarks? Assuming I don't care about ABI stability, what's the fastest calling convention?