>> (1) Fall back to the generic cost model if the tune model didn't
>> (specify one, i.e. make sure we always use the generic cost
>> ( model rather than the default one.
>> ((2) Change this generic (fallback) cost model so we don't have
>> (regressions on the current trunk, as it's now always used
Current generic cost model makes dynamic-lmul2-7.c generate inferior codegen.
I found if I tweak the cost a little bit then dynamic-lmul2-7.c codegen can be
recovered.
However, it makes other tests failed
It's complicated story
So, I'd rather set it as default cost and switch to it.
Then
I need to add these costs for segment load/stores:
/* Generic costs for VLA vector operations. */
static const scalable_vector_cost generic_vla_vector_cost = {
{
1, /* int_stmt_cost */
1, /* fp_stmt_cost */
1, /* gather_load_cost */
1, /* scatter_store_cost */
1, /* vec_
>> So is the idea here to just revert the values to the defaults for now
>> and change them again soon? And not to keep this as another default
>> and add others?
My idea is to revert default for now. Then we can refine the cost gradually.
>> I'm a bit confused here :) How does this help? Can'
