On Mon, 5 Oct 2015, Kirill Yukhin wrote: > To enable vectorization of loops w/ calls to math functions it is reasonable > to enable parsing of attribute vector for functions unconditionally and > change GlibC's header file not to use `omp declare simd', but use > __attribute__((vector)) instead.
I assume you mean __vector__, for namespace reasons. Obviously you need appropriate GCC version conditionals in the headers to use the attribute only when supported. In addition, (a) this attribute doesn't seem to be documented in extend.texi, and you'll need to include documentation in your GCC patch that makes this a generic extension rather than just part of Cilkplus, and (b) you'll need to agree with the x86_64 ABI mailing list an extension of the ABI document (as attached to <https://sourceware.org/glibc/wiki/libmvec>) to cover this attribute, and update the document there. -- Joseph S. Myers jos...@codesourcery.com
