On 06/24/11 08:58 AM, Steve Gonczi wrote:
> For Intel CPUs, 32 bit code is certainly more compact , and in some cases
> arguably faster than 64 bit code. (say, comparing the same code on the same
> machine
> compiled 32 and 64 bit)
But 64-bit code has access to more registers, which can make a measurable
difference for some code. SPARC is much more like you say, since the
registers and ISA's are basically the same between the two modes, leaving
it down to things like accessing a greater range of memory vs. doubling
the memory used by every pointer address & long int.
--
-Alan Coopersmith- [email protected]
Oracle Solaris Platform Engineering: X Window System
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