Re: Intel and x64 Question
Re: Intel and x64 Question
- Subject: Re: Intel and x64 Question
- From: Eric Albert <email@hidden>
- Date: Thu, 9 Jun 2005 01:27:59 -0700
On Jun 8, 2005, at 9:36 PM, Alex Telitsine wrote:
My understanding that XCode generates i386 code, instead of EM64T/x64
IMHO 86x64 is way to go, with all new CPUs, at least due to larger
register pool.
Does it mean we are going to go through "second transition", 32 bit to
64 bit for Intel with XCode? How will it work? Will we have 3 binaries
one for PPC, one for i386, one for x64?
BTW, while your are at it, please drop Microsoft calling convention
for SSE2 on x64, where they save half of SSE2 registers on every
function call.
We obviously can't say anything about unannounced future product plans
one way or another. The Developer Transition System is 32-bit only.
That said, you have three-way universal binaries today in the 10.4
Universal SDK -- libSystem is built for ppc, i386, and ppc64. The
Mach-O format can handle many additional architectures beyond that if
we need them someday.
-Eric
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