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0 pointsastrange4y ago0 comments

I don't feel like ARM has serious technical advantages over x86-64 as an ISA, although it is cleaner and has more security features which is good. Isn't the main advantage just that it's easier to license ARM?

Once enough patents expire all ISAs are eventually equal, I'd think.

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smoldesu4y ago

I feel much the same way. I've used both pretty extensively at this point, and I'm not sure if I'm a believer in either mentality. I'm hoping that RISC-V will be the one to blow my mind, though.

hughrr4y ago

Spend some time looking at optimised compiler output on godbolt on both architectures. ARM has some really nice tricks up its sleeves.

I’ve been using ARM since about 1992 though so I may be biased.

saagarjha4y ago

So does Intel ;)

hughrr4y ago

Yes and no. Look at some of the loop optimisations possible on ARM compared to x86-64. I've had x86-64 run 8 instructions that ARM does in 1 instruction.

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0 pointsastrange4y ago0 comments

Once enough patents expire all ISAs are eventually equal, I'd think.

0 comments

smoldesu4y ago

I feel much the same way. I've used both pretty extensively at this point, and I'm not sure if I'm a believer in either mentality. I'm hoping that RISC-V will be the one to blow my mind, though.

hughrr4y ago

Spend some time looking at optimised compiler output on godbolt on both architectures. ARM has some really nice tricks up its sleeves.

I’ve been using ARM since about 1992 though so I may be biased.

saagarjha4y ago

So does Intel ;)

hughrr4y ago

Yes and no. Look at some of the loop optimisations possible on ARM compared to x86-64. I've had x86-64 run 8 instructions that ARM does in 1 instruction.

2 more replies

j / k navigate · click thread line to collapse