Messages in this thread | | | From | (H. Peter Anvin) | Subject | Re: Intel vs AMD x86-64 | Date | Wed, 25 Feb 2004 16:17:21 +0000 (UTC) |
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Followup to: <403CCBE0.7050100@techsource.com> By author: Timothy Miller <miller@techsource.com> In newsgroup: linux.dev.kernel > > > Nakajima, Jun wrote: > > No, it's not a problem. Branches with 16-bit operand size are not useful > > for compilers. > > From AMD's documentation, I got the impression that 66H caused near > branches to be 32 bits in long mode (default is 64). > > So, Intel makes it 16 bits, and AMD makes it 32 bits? > > Either way, I don't see much use for either one. >
Both claims are pretty bogus. Shorter branches are quite nice for intraprocedural jumps; it reduces the cache footprint.
-hpa
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