On Tue, Mar 21, 2023 at 6:00 PM Andrew Stubbs <a...@codesourcery.com> wrote: > > Hi all, > > I want to be able to vectorize divide operators (softfp and integer), > but amdgcn only has hardware instructions suitable for -ffast-math. > > We have recently implemented vector versions of all the libm functions, > but the libgcc functions aren't builtins and therefore don't use those > hooks. > > What's the best way to achieve this? Add a new __builtin_div (and > __builtin_mod) that tree-vectorize can find, perhaps? Or something else?
What do you want to do? Vectorize the out-of-line libgcc copy? Or emit inline vectorized code for int/softfp operations? In the latter case just emit the code from the pattern expanders? > Thanks > > Andrew
