On Thu, 2003-10-16 at 19:19, Robert Jonsson wrote: > weapon the compiler can use to optimize code. Athlon64 remedies this by > doubling the size (32->64) and the amount (8->16) of all integer registers. > SSE also have double the amount of registers which (i think) benefits > floating point work (if the compiler supports it).
With Opteron/Athlon64 it's _very_ important to use SSE/3DNow optimized asm code. There are _major_ speed differences between the code generated by C/C++ compilers and handwritten assembly code. For some DSP routines the speed difference seems to be about 10x. -- Jussi Laako <[EMAIL PROTECTED]>
