On 10/12/2011 09:24 AM, Jakub Jelinek wrote:
> BTW, I wonder if vector multiply expansion when one argument is VECTOR_CST
> with all elements the same shouldn't use something similar to what expand_mult
> does, not sure if in the generic code or at least in the backends.
> Testing the costs will be
Hi!
On
long long a[1024], c[1024];
char b[1024];
void
foo (void)
{
int i;
for (i = 0; i < 1024; i++)
b[i] = a[i] + 3 * c[i];
}
I've noticed that while i?86 backend supports
mulv16qi3, it doesn't support mulv32qi3 even with AVX2.
The following patch implements that similarly how
mulv16qi3
