On Thu, Aug 13, 2020 at 08:40:22PM +0000, GT wrote:
> I'm looking at ix86_simd_clone_adjust and also aarch64_simd_clone_adjust. The
> latter is
> much simpler and I see how I would add PPC attribute "vsx" similarly. If I
> was to follow
> the ix86_simd_clone_adjust organization, then ix86_valid_target_attribute_p
> called near
> the end of the function is a problem. Because it in turn calls
> ix86_valid_target_attribute_tree and this last function doesn't have a
> similarly named
> function in PPC code.
>
> Also, once the attribute "vsx" is added, where is it used? I mean that in the
> sense of
> where is execution conditioned on the definition of say, the "sse2" string in
> x86_64?
You need to trigger what will the middle-end and backend do if you use
explicit __attribute__((target ("vsx"))) on the function, so in the end it
needs to do some parsing, create a TARGET_OPTION_NODE with the right option
changes and put it to the function.
Jakub
