Displaying 2 results from an estimated 2 matches for "9c586821".
2013 Jul 19
0
[LLVMdev] Disable vectorization for unaligned data
On Fri, Jul 19, 2013 at 1:14 PM, Francois Pichet <pichet2000 at gmail.com> wrote:
>
> What is the proper solution to disable auto-vectorization for unaligned
> data?
Why are you trying to do this? If auto-vectorization is making a
given loop slower on your target, that means the cost metrics are off,
and we should fix them. If code size is an issue, you should tell the
optimizer
2013 Jul 19
4
[LLVMdev] Disable vectorization for unaligned data
What is the proper solution to disable auto-vectorization for unaligned
data?
I have an out of tree target and I added this:
bool OpusTargetLowering::allowsUnalignedMemoryAccesses(EVT VT, bool *Fast)
const {
if (VT.isVector())
return false;
....
}
After that, I could see that vectorization is still done on unaligned data
except that llvm will copy the data back and forth from the source