icc vs. gcc on AMD64? [LWN.net]

icc vs. gcc on AMD64?

Posted Jun 28, 2005 22:03 UTC (Tue) by Ross (subscriber, #4065)
In reply to: icc vs. gcc on AMD64? by dmarti
Parent article: AMD Files Suit Against Intel (eWeek)

I'm not sure if it is a separate issue, but Intel's implementation of x86_64
has a couple of minor incompatabilities with AMD's. Intel's compiler
generates code which will only work on Intel's version. (Actually this is
third-hand information. I read about it on the gcc mailing list.)

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OT: AMD, Intel, Xen and X86_64

Posted Jun 30, 2005 11:44 UTC (Thu) by robdinn (guest, #30753) [Link]

I lurk on the Xen developer mailing list.

Intel seem to have a number of employees working on the x86_64
port of Xen. I find it amusing that intel are working on supporting
an AMD inspired architecture. Anyway, Intel's support is very welcome.

As I understand it, both Intel and AMD have soon to be released
extensions for hardware assisted virtualisation. These two schemes
also have incompatabilities, but it seems that Intel and AMD seem
to be cooperating on providing support for both schemes in Xen.

(Maybe I misunderstand and it is the Xen developers who are forcing
them to cooperate.)

Also maybe because Xen developement is open, Intel can't pull the
same sort of trick like they have with thier proprietary compiler.