Hi! On Tue, May 26, 2020 at 01:29:30PM +0100, Richard Sandiford wrote: > FWIW, I agree adding .LEN_LOAD and .LEN_STORE seems like a good > approach. I think it'll be more maintainable in the long run than > trying to have .MASK_LOADs and .MASK_STOREs that need a special mask > operand. (That would be too similar to VEC_COND_EXPR :-)) > > Not sure yet what the exact semantics wrt out-of-range values for > the IFN/optab though. Maybe we should instead have some kind of > abstract, target-specific cookie created by a separate intrinsic. > Haven't thought much about it yet...
Or maybe only support 0..N with N the length of the vector? It is pretty important to support 0 and N, but greater than N isn't as important (it is useful for tricky hand-written code, but not as much for compiler-generate code -- we only support an 8-bit number here on Power, maybe that is why ;-) ) Segher
