Hello all.
I have some problem on using gcc for a microblaze soft-core.
I have noticed that the assembler for this simple function
void weighed_sum(int * u, int a, int* v, int b, int size){
int i;
for(i=0;i<size;i++)
z[i]=a*u[i] + b*v[i];
}
refer to a long routine instead of the one mul Microblaze instruction on
esecuting a*u[i] and b*v[i]. So this code snippet takes lots of clock
periods to be executed. I am sure the multiplier is available on that
architecture because the muli instruction, which takes the multiplier,
has been used in the rest of the code. Could anybody tell me what may be
wrong with this or how I can improve the performances?
Thank you in advance
Stefano
_________________________________________________________________
Sai cosa è successo oggi? http://notizie.msn.it
