Hello,
Please, help me figure out how to trigger the scatter/gather
(pack/unpack) vector operations in gcc.
I need to move data from four pointer locations to a vector and vice
versa with no extra in-line asm(). Currently, I have code that looks
like this:
typedef union
{
float f[4] ;
v4sf v ;
} vector[100] ;
for( i=100; --i>=0;) {
row1[i] = vector[i].f[0];
row2[i] = vector[i].f[1];
row3[i] = vector[i].f[2];
row4[i] = vector[i].f[3];
}
Is this the only portable way to do to a pack/unpack without asm()? How
do I set it up differently to trigger a pack/unpack optimization?
Thank you.
