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Re: GCC 4.1 now the default GCC version for etch

Lennart Sorensen <lsorense@csclub.uwaterloo.ca> writes:

> On Tue, Jun 20, 2006 at 12:32:18PM +0200, Goswin von Brederlow wrote:
>> Exactly. Isn't the x86_64 instruction set basicaly the same as ia32
>> just with a few extra opcodes and more registers? Any general fault in
>> the instruction set should still remain.
> x86 processors have multiple modes with different instructions and
> registers in each mode.  AMD decided to make long mode remove some old
> features and in some cases replace them with new features.

But the changes in the instruction set are minimal. With a bit of care
you can use the same inline asm code for ia32 and x86_64 for example.
They didn't fix any fundamental flaws in the 386 instruction set. Just
droped some later addons like mmx.

That is what I ment.


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