Linked by Thom Holwerda on Fri 5th Apr 2013 16:04 UTC
General Development "For years, PC programmers used x86 assembly to write performance-critical code. However, 32-bit PCs are being replaced with 64-bit ones, and the underlying assembly code has changed. This white paper is an introduction to x64 assembly. No prior knowledge of x86 code is needed, although it makes the transition easier."
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RE: Comment by Drumhellar
by Neolander on Fri 5th Apr 2013 19:41 UTC in reply to "Comment by Drumhellar"
Neolander
Member since:
2010-03-08

Well, I'd say that the fix for x86 extension proliferation is easy: find that forgotten corner of the AMD64 spec where it states that the architecture mandates the presence of SSE2, NX and CPUID extensions among a few other things, then leave the rest to compilers, unless you really need a feature (like VT) or have to get the most out of a specific range of hardware for some reason.

I don't think it's a very good idea to rely on hardware-specific features which are not guaranteed to be present on future processor generations, even if it is the case in practice for now. Just look at how little of these x86 extensions Atom processors support: tomorrow, these little chips will likely be good enough for the average Joe's computing needs...

Edited 2013-04-05 19:41 UTC

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