Displaying 2 results from an estimated 2 matches for "rk_pointerinc".
2013 Oct 14
4
[LLVMdev] Fwd: Vectorization of pointer PHI nodes
...read;
c = *read;
// do the same stuff to a, b, c
*write++ = a;
*write++ = b;
*write++ = c;
}
Vectorizing this is very simple and it's a sequence of VLD3 + VOPS + VST3,
which GCC does it nicely, but we don't.
What would be the steps in adding a pointer increment reduction kind
(RK_PointerInc)? I believe the logic would be similar to RK_IntegerAdd, but
with a stride of type size, right?
Or maybe we'd have to translate the loop into something like:
for (i: 0 -> MAX, +=3) {
write[i] = (op) read[i];
write[i+1] = (op) read[i+1];
write[i+2] = (op) read[i+2];
}
So that the red...
2013 Oct 14
0
[LLVMdev] Vectorization of pointer PHI nodes
...a, b, c
>
> *write++ = a;
> *write++ = b;
> *write++ = c;
> }
>
> Vectorizing this is very simple and it's a sequence of VLD3 + VOPS + VST3, which GCC does it nicely, but we don't.
>
> What would be the steps in adding a pointer increment reduction kind (RK_PointerInc)? I believe the logic would be similar to RK_IntegerAdd, but with a stride of type size, right?
>
> Or maybe we'd have to translate the loop into something like:
>
> for (i: 0 -> MAX, +=3) {
> write[i] = (op) read[i];
> write[i+1] = (op) read[i+1];
> write[i+2] =...